NORWEST ASSET SEC CORP MORT PASS THR CERT SER 1999-16 TRUST
8-K, 1999-11-02
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


Date of Report: May 28, 1999
(Date of earliest event reported)

Commission File No. 333-65481



                      Norwest Asset Securities Corporation
- --------------------------------------------------------------------------------




               Delaware                                  52-1972128
- ----------------------------------------     -----------------------------------
       (State of Incorporation)                (I.R.S. Employer Identification
                                                            No.)



7485 New Horizon Way, Frederick, Maryland                         21703
- --------------------------------------------------------------------------------
         Address of principal executive offices                 (Zip Code)




                                 (301) 846-8881
- --------------------------------------------------------------------------------
               Registrant's Telephone Number, including area code





- --------------------------------------------------------------------------------
   (Former name, former address and former fiscal year, if changed since last
                                    report)



<PAGE>




ITEM 5.     Other Events

On May 28, 1999, Norwest Asset Securities  Corporation,  a Delaware  corporation
(the "Registrant"),  sold Mortgage  Pass-Through  Certificates,  Series 1999-16,
Class A-1,  Class A-2,  Class A-3,  Class A-4,  Class A-5, Class A-6, Class A-7,
Class A-8,  Class A-9, Class A-10,  Class A-11,  Class A-12,  Class A-13,  Class
A-14,  Class A-R,  Class A-LR,  Class B-1, Class B-2 and Class B-3 (the "Offered
Certificates"),    having   an   aggregate   original   principal   balance   of
$297,262,200.00.  The Offered Certificates were issued pursuant to a Pooling and
Servicing  Agreement,  dated as of May 28, 1999,  among the Registrant,  Norwest
Bank Minnesota,  National Association, as master servicer (the "Master Servicer"
or "Norwest Bank") and First Union National Bank, as trustee (the  "Agreement"),
a  copy  of  which  is  filed  as  an  exhibit  hereto.   Mortgage  Pass-Through
Certificates,  Series  1999-16,  Class A-PO  Certificates,  having an  aggregate
initial principal balance of $649,468.62, and Class B-4, Class B-5 and Class B-6
Certificates,  having an aggregate  initial  principal  balance of $2,251,549.92
(the  "Private  Class  B  Certificates"   and,  together  with  the  Class  A-PO
Certificates and the Offered Certificates, the "Certificates"), were also issued
pursuant to the Agreement.

As of the date of  initial  issuance,  the  Offered  Certificates  evidenced  an
approximate  99.03%  undivided  interest in a trust fund (the  "Trust  Estate"),
consisting principally of a pool of fixed interest rate,  conventional,  monthly
pay,  fully-amortizing,  one-to  four-family  residential  first mortgage loans,
other than the Fixed  Retained  Yield (as defined in the  Agreement),  which may
include loans secured by shares issued by cooperative housing corporations.  The
remaining  undivided  interests in the Trust  Estate are  evidenced by the Class
A-PO and Private  Class B  Certificates.  Distributions  on the Private  Class B
Certificates are  subordinated to distributions on the Offered  Certificates and
the Class A-PO Certificates.

Interest on the Offered  Certificates  will be distributed on each  Distribution
Date (as defined in the Agreement).  Monthly  distributions  in reduction of the
principal  balance of the Offered  Certificates will be allocated to the Offered
Certificates  in  accordance  with the  priorities  set forth in the  Agreement.
Distributions  of  interest  and  in  reduction  of  principal  balance  on  any
Distribution Date will be made to the extent that the Pool  Distribution  Amount
is sufficient therefor.

An  election  will be made to treat the Trust  Estate as two REMICs for  federal
income  tax  purposes   (the   "Upper-Tier   REMIC"  and   "Lower-Tier   REMIC,"
respectively).  The Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class
A-6, Class A-7, Class A-8, Class A-9, Class A-10,  Class A-11, Class A-12, Class
A-13,  Class A-14, Class A-PO, Class B-1, Class B-2, Class B-3, Class B-4, Class
B-5 and Class B-6  Certificates  will be treated as "regular  interests"  in the
Upper-Tier REMIC and the Class A-R and Class A-LR  Certificates  will be treated
as the  "residual  interests"  in the  Upper-Tier  REMIC and  Lower-Tier  REMIC,
respectively.



<PAGE>




ITEM 7.     Financial Statements and Exhibits

            (c)   Exhibits

Item 601(a)
of Regulation S-K
Exhibit No.                              Description
- -----------                              -----------

(EX-4)                                   Pooling and Servicing Agreement,  dated
                                         as of May 28, 1999, among Norwest Asset
                                         Securities  Corporation,  Norwest  Bank
                                         Minnesota,   National  Association  and
                                         First Union National Bank, as trustee.



<PAGE>




Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                       NORWEST ASSET SECURITIES CORPORATION

May 28, 1999
                                        /s/ Alan S. McKenney
                                       ---------------------------------------
                                       Alan S. McKenney
                                       Vice President




<PAGE>

                                INDEX TO EXHIBITS

                                                                PAPER (P) OR
EXHIBIT NO.                 DESCRIPTION                        ELECTRONIC (E)
- -----------                 -----------                        --------------
(EX-4)                      Pooling and Servicing Agreement,    E
                            dated as of May 28, 1999 among
                            Norwest Asset Securities
                            Corporation, Norwest Bank
                            Minnesota, National Association
                            and First Union National Bank, as
                            trustee.


     -------------------------------------------------------------------




                      NORWEST ASSET SECURITIES CORPORATION


                                    (Seller)

                                       and

                 NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION

                                (Master Servicer)

                                       and

                            FIRST UNION NATIONAL BANK

                                    (Trustee)

                         POOLING AND SERVICING AGREEMENT

                            Dated as of May 28, 1999

                               $300,163,218.54

                       Mortgage Pass-Through Certificates
                                 Series 1999-16




      -----------------------------------------------------------------


<PAGE>



                                TABLE OF CONTENTS

                                                                            Page


                                    ARTICLE I

                                   DEFINITIONS

Section 1.01  Definitions .................................................1
Section 1.02  Acts of Holders...............................................51
Section 1.03  Effect of Headings and Table of Contents......................52
Section 1.04  Benefits of Agreement.........................................52


                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01  Conveyance of Mortgage Loans...................................1
Section 2.02  Acceptance by Trustee..........................................2
Section 2.03  Representations and Warranties of the Master Servicer and
               the Seller....................................................3
Section 2.04  Execution and Delivery of Certificates.........................9
Section 2.05  Designation of Certificates; Designation of Startup Day
               and Latest Possible Maturity Date............................10


                                   ARTICLE III

                ADMINISTRATION OF THE TRUST ESTATE: SERVICING
                              OF THE MORTGAGE LOANS

Section 3.01  Certificate Account............................................1
Section 3.02  Permitted Withdrawals from the Certificate Account.............2
Section 3.03  Advances by Master Servicer and Trustee........................3
Section 3.04  Trustee to Cooperate; Release of Owner Mortgage Loan
               Files.........................................................5
Section 3.05  Reports to the Trustee; Annual Compliance Statements...........6
Section 3.06  Title, Management and Disposition of Any REO Mortgage
               Loan..........................................................6
Section 3.07  Amendments to Servicing Agreements, Modification of
               Standard Provisions...........................................7
Section 3.08  Oversight of Servicing.........................................8
Section 3.09  Termination and Substitution of Servicing Agreements..........10
Section 3.10  Application of Net Liquidation Proceeds.......................11
Section 3.11  Act Reports...................................................11


                                   ARTICLE IV

                  DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
                       PAYMENTS TO CERTIFICATEHOLDERS;
                             STATEMENTS AND REPORTS

Section 4.01  Distributions..................................................1
Section 4.02  Allocation of Realized Losses.................................13
Section 4.03  Paying Agent..................................................16
Section 4.04  Statements to Certificateholders; Report to the Trustee
               and the Seller...............................................17
Section 4.05  Reports to Mortgagors and the Internal Revenue Service........20
Section 4.06  Calculation of Amounts; Binding Effect of Interpretations
               and Actions of Master Servicer...............................20
Section 4.07  Determination of LIBOR........................................21


                                    ARTICLE V

                                THE CERTIFICATES

Section 5.01  The Certificates...............................................1
Section 5.02  Registration of Certificates...................................2
Section 5.03  Mutilated, Destroyed, Lost or Stolen Certificates..............6
Section 5.04  Persons Deemed Owners..........................................6
Section 5.05  Access to List of Certificateholders' Names and Addresses......7
Section 5.06  Maintenance of Office or Agency................................7
Section 5.07  Definitive Certificates........................................7
Section 5.08  Notices to Clearing Agency.....................................8


                                   ARTICLE VI

                       THE SELLER AND THE MASTER SERVICER

Section 6.01  Liability of the Seller and the Master Servicer................1
Section 6.02  Merger or Consolidation of the Seller or the Master
               Servicer......................................................1
Section 6.03  Limitation on Liability of the Seller, the Master
               Servicer and Others...........................................1
Section 6.04  Resignation of the Master Servicer.............................2
Section 6.05  Compensation to the Master Servicer............................2
Section 6.06  Assignment or Delegation of Duties by Master Servicer..........2
Section 6.07  Indemnification of Trustee and Seller by Master Servicer.......3
Section 6.08  Master Servicer Covenants Concerning Year 2000 Compliance......3


                                   ARTICLE VII

                                     DEFAULT

Section 7.01  Events of Default..............................................1
Section 7.02  Other Remedies of Trustee......................................2
Section 7.03  Directions by Certificateholders and Duties of Trustee
               During Event of Default.......................................3
Section 7.04  Action upon Certain Failures of the Master Servicer and
               upon Event of Default.........................................3
Section 7.05  Trustee to Act; Appointment of Successor.......................3
Section 7.06  Notification to Certificateholders.............................5


                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

Section 8.01  Duties of Trustee..............................................1
Section 8.02  Certain Matters Affecting the Trustee..........................2
Section 8.03  Trustee Not Required to Make Investigation.....................2
Section 8.04  Trustee Not Liable for Certificates or Mortgage Loans..........3
Section 8.05  Trustee May Own Certificates...................................3
Section 8.06  The Master Servicer to Pay Fees and Expenses...................3
Section 8.07  Eligibility Requirements.......................................3
Section 8.08  Resignation and Removal........................................4
Section 8.09  Successor......................................................5
Section 8.10  Merger or Consolidation........................................5
Section 8.11  Authenticating Agent...........................................5
Section 8.12  Separate Trustees and Co-Trustees..............................6
Section 8.13  Appointment of Custodians......................................8
Section 8.14  Tax Matters; Compliance with REMIC Provisions..................8
Section 8.15  Monthly Advances..............................................10
Section 8.16  Trustee Covenants Concerning Year 2000 Compliance.............10


                                   ARTICLE IX

                                   TERMINATION

Section 9.01  Termination upon Purchase by the Seller or Liquidation of
               All Mortgage Loans............................................1
Section 9.02  Additional Termination Requirements............................3


                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

Section 10.01 Amendment......................................................1
Section 10.02 Recordation of Agreement.......................................2
Section 10.03 Limitation on Rights of Certificateholders.....................3
Section 10.04 Governing Law; Jurisdiction....................................4
Section 10.05 Notices........................................................4
Section 10.06 Severability of Provisions.....................................4
Section 10.07 Special Notices to Rating Agencies.............................4
Section 10.08 Covenant of Seller.............................................5
Section 10.09 Recharacterization.............................................5


                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

Section 11.01 Class A Fixed Pass-Through Rate................................1
Section 11.02 Cut-Off Date...................................................1
Section 11.03 Cut-Off Date Aggregate Principal Balance.......................1
Section 11.04 Original Class A Percentage....................................1
Section 11.05 Original Principal Balances of the Classes of Class A
               Certificates..................................................1
SECTION 11.05(A)  ORIGINAL CLASS A-6 NOTIONAL AMOUNT.........................1
Section 11.06 Original Class A Non-PO Principal Balance......................2
Section 11.07 Original Subordinated Percentage...............................2
Section 11.08 Original Class B-1 Percentage..................................2
Section 11.09 Original Class B-2 Percentage..................................2
Section 11.10 Original Class B-3 Percentage..................................2
Section 11.11 Original Class B-4 Percentage..................................2
Section 11.12 Original Class B-5 Percentage..................................2
Section 11.13 Original Class B-6 Percentage..................................2
Section 11.14 Original Class B Principal Balance.............................2
Section 11.15 Original Principal Balances of the Classes of Class B
               Certificates..................................................2
Section 11.16 Original Class B-1 Fractional Interest.........................3
Section 11.17 Original Class B-2 Fractional Interest.........................3
Section 11.18 Original Class B-3 Fractional Interest.........................3
Section 11.19 Original Class B-4 Fractional Interest.........................3
Section 11.20 Original Class B-5 Fractional Interest.........................3
Section 11.21 Closing Date...................................................3
Section 11.22 Right to Purchase..............................................3
Section 11.23 Wire Transfer Eligibility......................................3
Section 11.24 Single Certificate.............................................4
Section 11.25 Servicing Fee Rate.............................................4
Section 11.26 Master Servicing Fee Rate......................................4


                                    EXHIBITS


EXHIBIT A-1       -     Form of Face of Class A-1 Certificate
EXHIBIT A-2       -     Form of Face of Class A-2 Certificate
EXHIBIT A-3       -     Form of Face of Class A-3 Certificate
EXHIBIT A-4       -     Form of Face of Class A-4 Certificate
EXHIBIT A-5       -     Form of Face of Class A-5 Certificate
EXHIBIT A-6       -     Form of Face of Class A-6 Certificate
EXHIBIT A-7       -     Form of Face of Class A-7 Certificate
EXHIBIT A-8       -     Form of Face of Class A-8 Certificate
EXHIBIT A-9       -     Form of Face of Class A-9 Certificate
EXHIBIT A-10      -     Form of Face of Class A-10 Certificate
EXHIBIT A-11      -     Form of Face of Class A-11 Certificate
EXHIBIT A-12      -     Form of Face of Class A-12 Certificate
EXHIBIT A-13      -     Form of Face of Class A-13 Certificate
EXHIBIT A-14      -     Form of Face of Class A-14 Certificate
EXHIBIT A-PO      -     Form of Face of Class A-PO Certificate
EXHIBIT A-R       -     Form of Face of Class A-R Certificate
EXHIBIT A-LR      -     Form of Face of Class A-LR Certificate
EXHIBIT B-1       -     Form of Face of Class B-1 Certificate
EXHIBIT B-2       -     Form of Face of Class B-2 Certificate
EXHIBIT B-3       -     Form of Face of Class B-3 Certificate
EXHIBIT B-4       -     Form of Face of Class B-4 Certificate
EXHIBIT B-5       -     Form of Face of Class B-5 Certificate
EXHIBIT B-6       -     Form of Face of Class B-6 Certificate
EXHIBIT C         -     Form of Reverse of Series 1999-16 Certificates
EXHIBIT D         -     Reserved
EXHIBIT E         -     Custodial Agreement
EXHIBIT F-1       -     Schedule of Mortgage Loans Serviced by Norwest
                        Mortgage in locations other than Fredrick, Maryland
EXHIBIT F-2       -     Schedule of Mortgage Loans Serviced by Norwest
                        Mortgage from Fredrick, Maryland
EXHIBIT F-3       -     Schedule of Mortgage Loans Serviced by Other Servicers
EXHIBIT G         -     Request for Release
EXHIBIT H         -     Affidavit Pursuant to Section 860E(e)(4) of the
                        Internal Revenue Code of 1986, as amended, and for
                        Non-ERISA Investors
EXHIBIT I         -     Letter from Transferor of Residual Certificates
EXHIBIT J         -     Transferee's Letter (Class [A-PO][B-4][B-5][B-6]
                        Certificates)
EXHIBIT K         -     Transferee's Letter (Class [A-14][B-1][B-2][B-3]
                        Certificates)
EXHIBIT L         -     Servicing Agreements
EXHIBIT M         -     Form of Special Servicing Agreement


<PAGE>


            This  Pooling  and  Servicing  Agreement,  dated as of May 28,  1999
executed  by NORWEST  ASSET  SECURITIES  CORPORATION,  as Seller,  NORWEST  BANK
MINNESOTA,  NATIONAL  ASSOCIATION,  as Master  Servicer and FIRST UNION NATIONAL
BANK, as Trustee.


                                WITNESSETH THAT:

            In  consideration of the mutual  agreements  herein  contained,  the
Seller, the Master Servicer and the Trustee agree as follows:



                                    ARTICLE I

                                   DEFINITIONS

            SECTION 1.01      DEFINITIONS.

            Whenever used herein,  the following  words and phrases,  unless the
context otherwise requires, shall have the meanings specified in this Article.

            Accepted  Master  Servicing  Practices:  Accepted  Master  Servicing
Practices shall consist of the customary and usual master servicing practices of
prudent master servicing  institutions  which service mortgage loans of the same
type as the Mortgage Loans in the  jurisdictions in which the related  Mortgaged
Properties are located,  regardless of the date upon which the related  Mortgage
Loans were originated.

            Accretion  Directed   Certificates:   The  Class A-1,   Class A-2,
Class A-3, Class A-4, Class A-5, Class A-7, Class A-8, Class A-9,  Class A-10,
Class A-11 and Class A-12 Certificates.

            Accretion Termination Date: (A) for the Class A-12 Certificates will
be the earlier to occur of (i) the Distribution  Date following the Distribution
Date on which the Principal Balances of the Class A-8 and Class A-9 Certificates
has been reduced to zero or (ii) the Cross-Over Date; and (B) for the Class A-13
Certificates will be the earlier to occur of (i) the Distribution Date following
the  Distribution  Date on which the Principal  Balances of the Class A-4, Class
A-5, Class A-8, Class A-9 and Class A-12  Certificates have been reduced to zero
or (ii) the Cross-Over Date;

            Accrual Certificates:  The Class A-12 and Class A-13 Certificates.

            Accrual  Distribution  Amount:  As to any Distribution Date prior to
the applicable Accretion Termination Date and any Class of Accrual Certificates,
an amount equal to the sum of (i) the Class A Interest  Percentage of such Class
of Accrual Certificates of the Current Class A Interest  Distribution Amount and
(ii)  the  Class A  Interest  Shortfall  Percentage  of such  Class  of  Accrual
Certificates  of the amount  distributed  in  respect of the  Classes of Class A
Certificates  pursuant  to  Paragraph  second  of  Section  4.01(a)(i)  on  such
Distribution  Date.  As to any  Distribution  Date on or  after  the  applicable
Accretion Termination Date, zero.

            Adjusted Pool Amount:  With respect to any  Distribution  Date,  the
Cut-Off Date Aggregate  Principal Balance of the Mortgage Loans minus the sum of
(i) all  amounts in respect of  principal  received  in respect of the  Mortgage
Loans  (including,  without  limitation,  amounts received as Monthly  Payments,
Periodic Advances,  Unscheduled  Principal  Receipts and Substitution  Principal
Amounts) and  distributed to Holders of the  Certificates  on such  Distribution
Date and all prior  Distribution  Dates and (ii) the  principal  portion  of all
Realized  Losses (other than Debt Service  Reductions)  incurred on the Mortgage
Loans  from  the  Cut-Off  Date  through  the end of the  month  preceding  such
Distribution Date.

            Adjusted Pool Amount (PO Portion):  With respect to any Distribution
Date,  the sum of the  amounts,  calculated  as  follows,  with  respect  to all
Outstanding  Mortgage  Loans:  the product of (i) the PO Fraction  for each such
Mortgage Loan and (ii) the remainder of (A) the Cut-Off Date  Principal  Balance
of such  Mortgage  Loan  minus  (B) the sum of (x) all  amounts  in  respect  of
principal  received  in  respect  of  such  Mortgage  Loan  (including,  without
limitation, amounts received as Monthly Payments, Periodic Advances, Unscheduled
Principal  Receipts  and  Substitution  Principal  Amounts) and  distributed  to
Holders of the Certificates on such Distribution Date and all prior Distribution
Dates and (y) the  principal  portion of any  Realized  Loss  (other than a Debt
Service Reduction)  incurred on such Mortgage Loan from the Cut-Off Date through
the end of the month preceding such Distribution Date.

            Adjusted  Principal  Balance:  As to any  Distribution  Date and any
Class of Class B Certificates, the greater of (A) zero and (B) (i) the Principal
Balance  of such Class with  respect  to such  Distribution  Date minus (ii) the
Adjustment Amount for such Distribution Date less the Principal Balances for any
Classes of Class B Certificates with higher numerical designations.

            Adjustment Amount: For any Distribution Date, the difference between
(A) the sum of the Class A Principal Balance and Class B Principal Balance as of
the  related  Determination  Date and (B) the sum of (i) the sum of the  Class A
Principal  Balance and Class B Principal  Balance as of the  Determination  Date
succeeding such Distribution  Date, (ii) the principal portion of Excess Special
Hazard Losses, Excess Fraud Losses and Excess Bankruptcy Losses allocated to the
Certificates  with  respect to such  Distribution  Date and (iii) the  aggregate
amount  that  would  have  been  distributed  to all  Classes  as  principal  in
accordance with Section  4.01(a)(i) for such Distribution Date without regard to
the provisos in the definitions of Class B-1 Optimal Principal Amount, Class B-2
Optimal Principal Amount,  Class B-3 Optimal Principal Amount, Class B-4 Optimal
Principal  Amount,  Class B-5  Optimal  Principal  Amount and Class B-6  Optimal
Principal Amount.

            Aggregate Class A Distribution  Amount: As to any Distribution Date,
the  aggregate  amount  distributable  to the  Classes  of Class A  Certificates
pursuant to Paragraphs first,  second, third and fourth of Section 4.01(a)(i) on
such Distribution Date.

            Aggregate Class A Unpaid Interest Shortfall:  As to any Distribution
Date, an amount equal to the sum of the Class A Unpaid  Interest  Shortfalls for
all the Classes of Class A Certificates.

            Aggregate   Current   Bankruptcy   Losses:   With   respect  to  any
Distribution  Date,  the sum of all  Bankruptcy  Losses  incurred  on any of the
Mortgage Loans in the month preceding the month of such Distribution Date.

            Aggregate  Current  Fraud Losses:  With respect to any  Distribution
Date,  the sum of all Fraud Losses  incurred on any of the Mortgage Loans in the
month preceding the month of such Distribution Date.

            Aggregate  Current  Special  Hazard  Losses:  With  respect  to  any
Distribution  Date, the sum of all Special Hazard Losses  incurred on any of the
Mortgage Loans in the month preceding the month of such Distribution Date.

            Aggregate  Foreclosure  Profits:  As to any Distribution Date, the
aggregate  amount of  Foreclosure  Profits with respect to all of the Mortgage
Loans.

            Agreement:   This  Pooling  and   Servicing   Agreement   and  all
amendments and supplements hereto.

            Applicable Unscheduled Principal Receipt Period: With respect to the
Mortgage Loans serviced by each Servicer and each of Full Unscheduled  Principal
Receipts and Partial Unscheduled  Principal Receipts,  the Unscheduled Principal
Receipt Period  specified on Schedule I hereto,  as amended from time to time by
the Master Servicer pursuant to Section 10.01(b)
hereof.

            Authenticating  Agent: Any  authenticating  agent appointed by the
Trustee pursuant to Section 8.11.  There shall initially be no  Authenticating
Agent for the Certificates.

            Available Master Servicer Compensation: As to any Distribution Date,
the sum of (a) the Master Servicing Fee for such Distribution Date, (b) interest
earned  through the business day preceding the applicable  Distribution  Date on
any  Prepayments  in Full remitted to the Master  Servicer and (c) the aggregate
amount of Month End Interest  remitted by the  Servicers to the Master  Servicer
pursuant to the related Servicing Agreements.

            Bankruptcy Code:  The Bankruptcy Code of 1978, as amended.

            Bankruptcy  Loss:  With  respect to any  Mortgage  Loan, a Deficient
Valuation or Debt Service Reduction;  provided,  however, that a Bankruptcy Loss
shall  not be  deemed a  Bankruptcy  Loss  hereunder  so long as the  applicable
Servicer has  notified the Master  Servicer and the Trustee in writing that such
Servicer is diligently  pursuing any remedies that may exist in connection  with
the  representations and warranties made regarding the related Mortgage Loan and
either (A) the related  Mortgage  Loan is not in default with regard to payments
due  thereunder or (B)  delinquent  payments of principal and interest under the
related  Mortgage  Loan  and  any  premiums  on any  applicable  primary  hazard
insurance  policy and any related  escrow  payments in respect of such  Mortgage
Loan are being  advanced  on a current  basis by such  Servicer  without  giving
effect to any Debt Service Reduction.

            Bankruptcy  Loss Amount:  As of any  Distribution  Date prior to the
first  anniversary of the Cut-Off Date,  the  Bankruptcy  Loss Amount will equal
$50,000 minus the aggregate amount of Bankruptcy  Losses allocated solely to the
Class B Certificates  in accordance with Section 4.02(a) since the Cut-Off Date.
As of any  Distribution  Date on or after the first  anniversary  of the Cut-Off
Date,  an amount  equal to (1) the  lesser  of (a) the  Bankruptcy  Loss  Amount
calculated as of the close of business on the Business Day immediately preceding
the most recent  anniversary  of the Cut-Off Date  coinciding  with or preceding
such Distribution  Date (the "Relevant  Anniversary") and (b) such lesser amount
which,  as  determined  on the  Relevant  Anniversary  will not  cause any rated
Certificates  to be placed on credit  review  status  (other  than for  possible
upgrading) by either Rating Agency minus (2) the aggregate  amount of Bankruptcy
Losses  allocated  solely to the Class B Certificates in accordance with Section
4.02(a) since the Relevant  Anniversary.  On and after the  Cross-Over  Date the
Bankruptcy Loss Amount shall be zero.

            Bank United  Mortgage  Loan Sale  Agreement:  The mortgage loan sale
agreement  dated as of September  17, 1998 between Bank United,  as seller,  and
Norwest Funding, Inc., as purchaser.

            Beneficial  Owner:  With  respect to a Book-Entry  Certificate,  the
Person who is the beneficial owner of such Book-Entry Certificate,  as reflected
on the books of the Clearing Agency, or on the books of a Person  maintaining an
account with such Clearing Agency  (directly or as an indirect  participant,  in
accordance with the rules of such Clearing Agency), as the case may be.

            Book-Entry Certificate: Any one of the Class A-1 Certificates, Class
A-2  Certificates,  Class A-3 Certificates,  Class A-4  Certificates,  Class A-5
Certificates,   Class  A-7  Certificates,  Class  A-8  Certificates,  Class  A-9
Certificates,  Class  A-10  Certificates,  Class A-11  Certificates,  Class A-12
Certificates and Class A-13 Certificates,  beneficial ownership and transfers of
which shall be  evidenced  by, and made  through,  book  entries by the Clearing
Agency as described in Section 5.01(b).

            Business Day: Any day other than (i) a Saturday or a Sunday, or (ii)
a legal holiday in the City of New York, State of Iowa, State of Maryland, State
of  Minnesota  or  State  of North  Carolina  or  (iii) a day on  which  banking
institutions  in the City of New York, or the State of Iowa,  State of Maryland,
State of Minnesota or State of North Carolina are authorized or obligated by law
or executive order to be closed.

            Certificate:  Any  one  of the  Class A  Certificates  or  Class B
Certificates.

            Certificate   Account:   The   trust   account   established   and
maintained  by the  Master  Servicer  in the name of the  Master  Servicer  on
behalf of the Trustee pursuant to Section 3.01.  The Certificate Account shall
be an Eligible Account.

            Certificate  Register  and  Certificate  Registrar:  Respectively,
the  register  maintained  pursuant  to  and  the  registrar  provided  for in
Section 5.02. The initial Certificate Registrar is the Trustee.

            Certificateholder  or Holder: The Person in whose name a Certificate
is registered in the Certificate Register,  except that, solely for the purposes
of the  taking  of any  action  under  Articles  VII or  VIII,  any  Certificate
registered  in the name of the  Master  Servicer,  a Servicer  or any  affiliate
thereof shall be deemed not to be outstanding and the Voting Interest  evidenced
thereby  shall not be taken into account in  determining  whether the  requisite
percentage  of  Certificates  necessary  to  effect  any  such  action  has been
obtained.

            Class:  All  certificates  whose  form  is  identical  except  for
variations in the Percentage Interest evidenced thereby.

            Class A Certificate:  Any one of the Class A-1  Certificates,  Class
A-2  Certificates,  Class A-3 Certificates,  Class A-4  Certificates,  Class A-5
Certificates,   Class  A-6  Certificates,  Class  A-7  Certificates,  Class  A-8
Certificates,  Class A-9  Certificates,  Class  A-10  Certificates,  Class  A-11
Certificates,  Class  A-12  Certificates,  Class A-13  Certificates,  Class A-14
Certificates,  Class  A-PO  Certificates,  Class A-R  Certificate  or Class A-LR
Certificate.

            Class A  Certificateholder:  The  registered  holder  of a Class A
Certificate.

            Class A Distribution  Amount:  As to any  Distribution  Date and any
Class of Class A Certificates  (other than the Class A-6, Class A-12, Class A-13
and Class A-PO Certificates),  the amount distributable to such Class of Class A
Certificates  pursuant  to  Paragraphs  first,  second  and third  clause (A) of
Section 4.01(a)(i).  As to the Class A-6 Certificates,  the amount distributable
to such Class pursuant to Paragraphs first and second of Section 4.01(a)(i).  As
to the Class A-12 and Class A-13  Certificates,  (a) as to any Distribution Date
prior to the applicable Accretion  Termination Date, the amount distributable to
such Class of Accrual Certificates  pursuant to the provisos in Paragraphs first
and second of  Section  4.01(a)(i)  and  Paragraph  third  clause (A) of Section
4.01(a)(i)  and (b) as to any  Distribution  Date  on or  after  the  applicable
Accretion  Termination  Date, the amount  distributable to such Class of Accrual
Certificates  pursuant  to  Paragraphs  first,  second  and third  clause (A) of
Section 4.01(a)(i). As to any Distribution Date and the Class A-PO Certificates,
the amount  distributable to the Class A-PO Certificates  pursuant to Paragraphs
third clause (B) and fourth of Section 4.01(a)(i) on such Distribution Date.

            Class A  Fixed  Pass-Through  Rate: As to any  Distribution  Date,
the rate per annum set forth in Section 11.01.

            Class A Interest Accrual Amount:  As to any  Distribution  Date, the
sum of the Interest Accrual Amounts for the Classes of Class A Certificates with
respect to such Distribution Date.

            Class A Interest  Percentage:  As to any  Distribution  Date and any
Class of Class A  Certificates  (other  than the Class A-PO  Certificates),  the
percentage  calculated  by dividing  the Interest  Accrual  Amount of such Class
(determined  without  regard to clause  (ii) of the  definition  thereof) by the
Class A Interest Accrual Amount (determined without regard to clause (ii) of the
definition of each Interest Accrual Amount).

            Class A Interest  Shortfall  Amount: As to any Distribution Date and
any Class of Class A  Certificates,  any  amount by which the  Interest  Accrual
Amount of such Class with respect to such  Distribution  Date exceeds the amount
distributed  in respect  of such Class on such  Distribution  Date  pursuant  to
Paragraph  first  of  Section  4.01(a)(i)  including,  in the case of a Class of
Accrual  Certificates  prior to the  applicable  Accrual  Termination  Date, the
amount included in the Accrual Distribution Amount pursuant to clause (i) of the
definition thereof.

            Class A Interest Shortfall  Percentage:  As to any Distribution Date
and any Class of Class A Certificates the percentage  calculated by dividing the
Class A Unpaid Interest Shortfall for such Class by the Aggregate Class A Unpaid
Interest  Shortfall  determined as of the Business Day preceding the  applicable
Distribution Date.

            Class A Loss Denominator:  As to any  Determination  Date, an amount
equal  to the sum of (i) the  Principal  Balances  of the  Class A  Certificates
(other than the Accrual Certificates and the Class A-PO Certificates);  and (ii)
with respect to each Class of Accrual Certificates,  the lesser of the Principal
Balance of such Class of Accrual Certificates and the Original Principal Balance
of such Class of Accrual Certificates.

            Class A Loss Percentage:  As to any Determination Date and any Class
of  Class  A  Certificates   (other  than  the  Class  A-PO  Certificates)  then
outstanding, the percentage calculated by dividing the Principal Balance of such
Class  (or,  in the  case of a  Class  of  Accrual  Certificates,  the  Original
Principal  Balance  of such  Class if  lower)  by the  Class A Loss  Denominator
(determined without regard to any such Principal Balance of any Class of Class A
Certificates not then outstanding),  in each case determined as of the preceding
Determination Date.

            Class A Non-PO Optimal Amount: As to any Distribution  Date, the sum
for such Distribution Date of (i) the Class A Interest Accrual Amount,  (ii) the
Aggregate Class A Unpaid Interest Shortfall and (iii) the Class A Non-PO Optimal
Principal Amount.

            Class A Non-PO  Optimal  Principal  Amount:  As to any  Distribution
Date, an amount equal to the sum, as to each  Outstanding  Mortgage Loan, of the
product of (x) the Non-PO  Fraction with respect to such Mortgage  Loan, and (y)
the sum of:

      (i) the Class A  Percentage  of (A) the  principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii)  the  Class A  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class A Prepayment Percentage of the Scheduled Principal Balance
      of such Mortgage Loan which,  during the month preceding the month of such
      Distribution  Date, was repurchased by the Seller pursuant to Section 2.02
      or 2.03; and

      (iv) the Class A Percentage of the excess of the unpaid principal  balance
      of such Mortgage Loan substituted for a defective Mortgage Loan during the
      month preceding the month in which such  Distribution Date occurs over the
      unpaid principal balance of such defective  Mortgage Loan, less the amount
      allocable to the principal  portion of any unreimbursed  Periodic Advances
      previously  made by the applicable  Servicer,  the Master  Servicer or the
      Trustee in respect of such defective Mortgage Loan.

            Class A Non-PO Principal  Amount:  As to any Distribution  Date, the
aggregate  amount  distributed in respect of the Classes of Class A Certificates
pursuant to Paragraph third clause (A) of Section 4.01(a)(i).

            Class A Non-PO Principal Balance: As of any date, an amount equal to
the Class A  Principal  Balance  less the  Principal  Balance  of the Class A-PO
Certificates.

            Class A Non-PO Principal Distribution Amount: As to any Distribution
Date, the sum of (i) the sum of the applicable Accrual Distribution  Amounts, if
any,  with  respect  to such  Distribution  Date  and  (ii)  the  Class A Non-PO
Principal Amount with respect to such Distribution Date.

            Class A Pass-Through  Rate: As to the Class A-12,  Class A-13, Class
A-14,  Class A-R and Class  A-LR  Certificates,  the Class A Fixed  Pass-Through
Rate. As to the Class A-1,  Class A-2, Class A-3, Class A-4, Class A-8 and Class
A-11  Certificates,  6.000% per annum. As to the Class A-7 Certificates,  6.400%
per annum. As to the Class A-10 Certificates,  6.750% per annum. As to the Class
A-9 Certificates,  7.000% per annum. As to the Class A-5 Certificates, the Class
A-5  Pass-Through  Rate.  As to  the  Class  A-6  Certificates,  the  Class  A-6
Pass-Through  Rate. The Class A-PO Certificates are not entitled to interest and
have no Class A Pass-Through Rate.

            Class A  Percentage:  As to any  Distribution  Date  occurring on or
prior to the  Cross-Over  Date,  the lesser of (i) 100% and (ii) the  percentage
obtained by dividing the Class A Non-PO Principal Balance  (determined as of the
Determination Date preceding such Distribution Date) by the Pool Balance (Non-PO
Portion).  As to any  Distribution  Date occurring  subsequent to the Cross-Over
Date,  100% or such  lesser  percentage  which  will  cause  the  Class A Non-PO
Principal  Balance to decline to zero  following the  distribution  made on such
Distribution Date.

            Class A Prepayment  Percentage:  As to any Distribution  Date to and
including the Distribution  Date in May 2004, 100%. As to any Distribution  Date
subsequent to May 2004 to and including the  Distribution  Date in May 2005, the
Class A Percentage  as of such  Distribution  Date plus 70% of the  Subordinated
Percentage as of such Distribution  Date. As to any Distribution Date subsequent
to May 2005 to and  including  the  Distribution  Date in May 2006,  the Class A
Percentage as of such Distribution Date plus 60% of the Subordinated  Percentage
as of such Distribution Date. As to any Distribution Date subsequent to May 2006
to and including the Distribution Date in May 2007, the Class A Percentage as of
such  Distribution  Date  plus  40% of the  Subordinated  Percentage  as of such
Distribution  Date. As to any  Distribution  Date  subsequent to May 2007 to and
including the  Distribution  Date in May 2008, the Class A Percentage as of such
Distribution   Date  plus  20%  of  the  Subordinated   Percentage  as  of  such
Distribution Date. As to any Distribution Date subsequent to May 2008, the Class
A  Percentage  as of such  Distribution  Date.  The  foregoing is subject to the
following:  (i) if the aggregate distribution to Holders of Class A Certificates
on any Distribution Date of the Class A Prepayment  Percentage provided above of
(a) Unscheduled Principal Receipts distributable on such Distribution Date would
reduce the Class A Non-PO  Principal  Balance below zero, the Class A Prepayment
Percentage for such Distribution Date shall be the percentage necessary to bring
the  Class A  Non-PO  Principal  Balance  to zero  and  thereafter  the  Class A
Prepayment Percentage shall be zero and (ii) if the Class A Percentage as of any
Distribution  Date is greater than the Original Class A Percentage,  the Class A
Prepayment Percentage for such Distribution Date shall be 100%.  Notwithstanding
the  foregoing,  with respect to any  Distribution  Date on which the  following
criteria  are not  met,  the  reduction  of the  Class A  Prepayment  Percentage
described in the second  through sixth  sentences of this  definition of Class A
Prepayment  Percentage shall not be applicable with respect to such Distribution
Date. In such event,  the Class A Prepayment  Percentage  for such  Distribution
Date will be determined  in accordance  with the  applicable  provision,  as set
forth in the first through  fifth  sentences  above,  which was actually used to
determine the Class A Prepayment  Percentage for the Distribution Date occurring
in the May preceding such  Distribution  Date (it being  understood that for the
purposes  of the  determination  of the Class A  Prepayment  Percentage  for the
current  Distribution  Date,  the current  Class A Percentage  and  Subordinated
Percentage  shall be utilized).  In order for the  reduction  referred to in the
second  through  sixth   sentences  to  be  applicable,   with  respect  to  any
Distribution  Date  (a)  the  average  outstanding  principal  balance  on  such
Distribution Date and for the preceding five Distribution  Dates on the Mortgage
Loans that were  delinquent  60 days or more  (including  for this  purpose  any
payments  due with  respect to Mortgage  Loans in  foreclosure  and REO Mortgage
Loans)  must be less than 50% of the current  Class B Principal  Balance and (b)
cumulative  Realized  Losses  shall not exceed (1) 30% of the  Original  Class B
Principal  Balance if such  Distribution  Date occurs between and including June
2004 and May 2005,  (2) 35% of the  Original  Class B Principal  Balance if such
Distribution  Date occurs  between and including June 2005 and May 2006, (3) 40%
of the  Original  Class B  Principal  Balance if such  Distribution  Date occurs
between and including  June 2006 and May 2007,  (4) 45% of the Original  Class B
Principal  Balance if such  Distribution  Date occurs between and including June
2007 and May 2008, and (5) 50% of the Original Class B Principal Balance if such
Distribution  Date  occurs  during  or after  June  2008.  With  respect  to any
Distribution  Date on which the Class A Prepayment  Percentage  is reduced below
the Class A Prepayment  Percentage for the prior  Distribution  Date, the Master
Servicer shall certify to the Trustee,  based upon information  provided by each
Servicer as to the Mortgage  Loans serviced by it that the criteria set forth in
the preceding sentence are met.

            Class A Principal  Balance:  As of any date,  an amount equal to the
sum of the  Principal  Balances  for  the  Class  A-1  Certificates,  Class  A-2
Certificates,   Class  A-3  Certificates,  Class  A-4  Certificates,  Class  A-5
Certificates,   Class  A-7  Certificates,  Class  A-8  Certificates,  Class  A-9
Certificates,  Class  A-10  Certificates,  Class A-11  Certificates,  Class A-12
Certificates,  Class  A-13  Certificates,  Class A-14  Certificates,  Class A-PO
Certificates, Class A-R Certificate and Class A-LR Certificate.

            Class A Unpaid Interest  Shortfall:  As to any Distribution Date and
any Class of Class A Certificates, the amount, if any, by which the aggregate of
the Class A Interest  Shortfall  Amounts  for such Class for prior  Distribution
Dates is in excess of the  amounts  distributed  in respect of such Class (or in
the case of a Class of Accrual  Certificates  prior to the applicable  Accretion
Termination  Date,  the  amount  included  in the  Accrual  Distribution  Amount
pursuant to clause (ii) of the definition  thereof) on prior  Distribution Dates
pursuant to Paragraph second of Section 4.01(a)(i).

            Class A-1 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-1 and Exhibit C hereto.

            Class A-1   Certificateholder:   The   registered   holder   of  a
Class A-1 Certificate.

            Class A-2 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-2 and Exhibit C hereto.

            Class A-2   Certificateholder:   The   registered   holder   of  a
Class A-2 Certificate.

            Class A-3 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-3 and Exhibit C hereto.

            Class A-3   Certificateholder:   The   registered   holder   of  a
Class A-3 Certificate.

            Class A-4 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-4 and Exhibit C hereto.

            Class A-4   Certificateholder:   The   registered   holder   of  a
Class A-4 Certificate.

            Class A-5 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-5 and Exhibit C hereto.

            Class A-5   Certificateholder:   The   registered   holder   of  a
Class A-5 Certificate.

            Class A-5 Pass-Through  Rate: With respect to the Distribution  Date
occurring  in June  1999,  5.235%  per annum.  With  respect to each  succeeding
Distribution Date, a per annum rate, determined by the Trustee on the applicable
Rate Determination Date, equal to 0.300% plus LIBOR subject to a minimum rate of
0.300% and a maximum rate of 8.000%.

            Class A-6 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-6 and Exhibit C hereto.

            Class A-6   Certificateholder:   The   registered   holder   of  a
Class A-6 Certificate.

            Class A-6 Interest Accrual Amount: As to any Distribution  Date, (i)
the  product  of (A) 1/12th of the Class A  Pass-Through  Rate for the Class A-6
Certificates and (B) the Class A-6 Notional Amount as of such  Distribution Date
minus (ii) the Class A Interest  Percentage of the Class A-6 Certificates of (x)
any Non-Supported Interest Shortfall allocated to the Class A Certificates,  (y)
the interest  portion of any Excess Special  Hazard Losses,  Excess Fraud Losses
and Excess  Bankruptcy Losses allocated to the Class A Certificates with respect
to such  Distribution  Date  pursuant to Section  4.02(e)  and (z) the  interest
portion of any Realized Losses (other than Excess Special Hazard Losses,  Excess
Fraud Losses and Excess Bankruptcy Losses) allocated to the Class A Certificates
on or after the Cross-Over Date pursuant to Section 4.02(e).

            Class A-6 Notional Amount: As to any Distribution  Date, an amount
equal to the Principal Balance of the Class A-5 Certificates.

            Class A-6 Pass-Through  Rate: With respect to the Distribution  Date
occurring  in June  1999,  2.765%  per annum.  With  respect to each  succeeding
Distribution Date, a per annum rate, determined by the Trustee on the applicable
Rate  Determination  Date, equal to 7.700% minus LIBOR subject to a minimum rate
of 0.000% and a maximum rate of 7.700%

            Class A-7 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-7 and Exhibit C hereto.

            Class A-7   Certificateholder:   The   registered   holder   of  a
Class A-7 Certificate.

            Class A-8 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-8 and Exhibit C hereto.

            Class A-8   Certificateholder:   The   registered   holder   of  a
Class A-8 Certificate.

            Class A-9 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-9 and Exhibit C hereto.

            Class A-9   Certificateholder:   The   registered   holder   of  a
Class A-9 Certificate.

            Class A-10 Certificate:  Any one of the Certificates executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-10 and Exhibit C hereto.

            Class A-10   Certificateholder:   The   registered   holder  of  a
Class A-10 Certificate.

            Class A-11 Certificate:  Any one of the Certificates executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-11 and Exhibit C hereto.

            Class A-11   Certificateholder:   The   registered   holder  of  a
Class A-11 Certificate.

            Class A-12 Certificate:  Any one of the Certificates executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-12 and Exhibit C hereto.

            Class A-12   Certificateholder:   The   registered   holder  of  a
Class A-12 Certificate.

            Class A-13 Certificate:  Any one of the Certificates executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-13 and Exhibit C hereto.

            Class A-13   Certificateholder:   The   registered   holder  of  a
Class A-13 Certificate.

            Class A-13 Loss Amount: With respect to any Determination Date after
the Cross-Over Date, the amount,  if any, by which the Principal  Balance of the
Class A-13  Certificates  would be reduced as a result of the application of the
third sentence of the definition of Principal Balance.

            Class A-14 Certificate:  Any one of the Certificates executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-14 and Exhibit C hereto.

            Class A-14   Certificateholder:   The   registered   holder  of  a
Class A-14 Certificate.

            Class A-14 Loss Allocation Amount: With respect to any Determination
Date after the  Cross-Over  Date the lesser of (a) the Principal  Balance of the
Class A-14  Certificates  with respect to such  Determination  Date prior to any
reduction for the Class A-14 Loss Allocation  Amount and (b) the Class A-13 Loss
Amount.

            Class A-L1  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-L5  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the Upper  Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-L7  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the Upper  Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-L8  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the Upper  Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-L12  Interest:  A regular  interest in the Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-L14  Interest:  A regular  interest in the Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-LPO  Interest:  A regular  interest in the Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-LR Certificate:  The Certificate executed by the Trustee and
authenticated by the Trustee or the  Authenticating  Agent in substantially  the
form set forth in Exhibit A-LR and Exhibit D hereto.

            Class A-LR   Certificateholder:   The  registered  holder  of  the
Class A-LR Certificate.

            Class A-LUR  Interest:  A regular  interest in the Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class A-PO Certificate:  Any one of the Certificates executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-PO and Exhibit C hereto.

            Class A-PO   Certificateholder:   The   registered   holder  of  a
Class A-PO Certificate.

            Class A-PO Deferred Amount:  For any Distribution  Date prior to the
Cross-Over  Date, the difference  between (A) the sum of (x) the amount by which
the sum of the Class A-PO Optimal Principal  Amounts for all prior  Distribution
Dates exceeded the amounts  distributed on the Class A-PO  Certificates  on such
prior  Distribution  Dates  pursuant to  Paragraph  third  clause (B) of Section
4.01(a)(i) and (y) the sum of the product for each Discount  Mortgage Loan which
became  a  Liquidated  Loan  at any  time on or  prior  to the  last  day of the
applicable  Unscheduled  Principal  Receipt Period for the current  Distribution
Date of (a) the PO Fraction for such  Discount  Mortgage  Loan and (b) an amount
equal to the principal  portion of Realized Losses (other than Bankruptcy Losses
due to Debt Service  Reductions)  incurred  with respect to such  Mortgage  Loan
other  than  Excess  Special  Hazard  Losses,  Excess  Fraud  Losses  and Excess
Bankruptcy Losses and (B) amounts  distributed on the Class A-PO Certificates on
prior Distribution Dates pursuant to Paragraph fourth of Section 4.01(a)(i).  On
and after the Cross-Over  Date, the Class A-PO Deferred  Amount will be zero. No
interest will accrue on any Class A-PO Deferred Amount.

            Class A-PO Optimal Principal Amount: As to any Distribution Date, an
amount equal to the sum as to each Outstanding  Mortgage Loan, of the product of
(x) the PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) (A) the principal  portion of the Monthly  Payment due on the Due Date
      occurring in the month of such  Distribution  Date on such Mortgage  Loan,
      less (B) if the  Bankruptcy  Loss  Amount has been  reduced  to zero,  the
      principal  portion  of any Debt  Service  Reduction  with  respect to such
      Mortgage Loan;

      (ii) all Unscheduled  Principal  Receipts that were received by a Servicer
      with  respect to such  Mortgage  Loan  during the  Applicable  Unscheduled
      Principal  Receipt  Period  relating  to such  Distribution  Date for each
      applicable type of Unscheduled Principal Receipt;

      (iii) the  Scheduled  Principal  Balance  of each  Mortgage  Loan that was
      repurchased by the Seller during such preceding  month pursuant to Section
      2.02 or 2.03;

      (iv) the excess of the unpaid  principal  balance  of such  Mortgage  Loan
      substituted  for a defective  Mortgage Loan during the month preceding the
      month in which such  Distribution  Date occurs  over the unpaid  principal
      balance of such defective  Mortgage Loan, less the amount allocable to the
      principal portion of any unreimbursed Periodic Advances previously made by
      the applicable Servicer,  the Master Servicer or the Trustee in respect of
      such defective Mortgage Loan.

            Class A-R Certificate:  The Certificate  executed by the Trustee and
authenticated by the Trustee or the  Authenticating  Agent in substantially  the
form set forth in Exhibit A-R and Exhibit C hereto.

            Class A-R   Certificateholder:   The  registered   holder  of  the
Class A-R Certificate.

            Class B Certificate:  Any one of the Class B-1  Certificates,  Class
B-2  Certificates,  Class B-3 Certificates,  Class B-4  Certificates,  Class B-5
Certificates or Class B-6 Certificates.

            Class B  Certificateholder:  The  registered  holder  of a Class B
Certificate.

            Class B  Distribution  Amount:  Any of the  Class B-1,  Class B-2,
Class B-3, Class B-4, Class B-5 or Class B-6 Distribution Amounts.

            Class B Interest Accrual Amount:  As to any  Distribution  Date, the
sum of the Interest Accrual Amounts for the Classes of Class B Certificates with
respect to such Distribution Date.

            Class B Interest  Percentage:  As to any  Distribution  Date and any
Class of  Class B  Certificates,  the  percentage  calculated  by  dividing  the
Interest Accrual Amount of such Class (determined  without regard to clause (ii)
of the definition  thereof) by the Class B Interest  Accrual Amount  (determined
without  regard  to  clause  (ii) of the  definition  of each  Interest  Accrual
Amount).

            Class B Interest  Shortfall  Amount:  Any of the Class B-1  Interest
Shortfall  Amount,  Class B-2  Interest  Shortfall  Amount,  Class B-3  Interest
Shortfall  Amount,  Class B-4  Interest  Shortfall  Amount,  Class B-5  Interest
Shortfall Amount or Class B-6 Interest Shortfall Amount.

            Class B Loss Percentage:  As to any Determination Date and any Class
of Class B Certificates then outstanding,  the percentage calculated by dividing
the  Principal  Balance  of such  Class of Class B  Certificates  by the Class B
Principal  Balance  (determined  without regard to any Principal  Balance of any
Class of Class B Certificates not then outstanding),  in each case determined as
of the preceding Determination Date.

            Class B  Pass-Through  Rate: As to any Distribution  Date,  6.500%
per annum.

            Class B Percentage:  Any one of the Class B-1 Percentage,  Class B-2
Percentage,  Class B-3 Percentage, Class B-4 Percentage, Class B-5 Percentage or
Class B-6 Percentage.

            Class B  Prepayment  Percentage:  Any of the Class B-1  Prepayment
Percentage,  Class B-2 Prepayment Percentage, Class B-3 Prepayment Percentage,
Class B-4 Prepayment Percentage,  Class B-5 Prepayment Percentage or Class B-6
Prepayment Percentage.

            Class B Principal  Balance:  As of any date,  an amount equal to the
sum of the Class B-1 Principal Balance,  Class B-2 Principal Balance,  Class B-3
Principal Balance,  Class B-4 Principal Balance, Class B-5 Principal Balance and
Class B-6 Principal Balance.

            Class B Unpaid  Interest  Shortfall:  Any of the  Class  B-1  Unpaid
Interest  Shortfall,  Class B-2  Unpaid  Interest  Shortfall,  Class B-3  Unpaid
Interest  Shortfall,  Class B-4  Unpaid  Interest  Shortfall,  Class B-5  Unpaid
Interest Shortfall or Class B-6 Unpaid Interest Shortfall.

            Class B-1 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-1 and Exhibit C hereto.

            Class B-1   Certificateholder:   The   registered   holder   of  a
Class B-1 Certificate.

            Class B-1  Distribution  Amount:  As to any  Distribution  Date, any
amount  distributable to the Holders of the Class B-1  Certificates  pursuant to
Paragraphs fifth, sixth and seventh of Section 4.01(a)(i).

            Class B-1 Interest  Shortfall Amount:  As to any Distribution  Date,
any amount by which the Interest  Accrual  Amount of the Class B-1  Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-1  Certificates on such  Distribution  Date pursuant to Paragraph
fifth of Section 4.01(a)(i).

            Class B-1 Optimal Principal Amount: As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) the Class B-1  Percentage of (A) the principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii) the Class B-1  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class  B-1  Prepayment  Percentage  of the  Scheduled  Principal
      Balance of such Mortgage Loan which,  during the month preceding the month
      of such  Distribution  Date,  was  repurchased  by the Seller  pursuant to
      Section 2.02 or 2.03; and

      (iv) the Class  B-1  Percentage  of the  excess  of the  unpaid  principal
      balance of such Mortgage Loan  substituted  for a defective  Mortgage Loan
      during  the month  preceding  the month in which  such  Distribution  Date
      occurs over the unpaid principal balance of such defective  Mortgage Loan,
      less the amount  allocable to the  principal  portion of any  unreimbursed
      Periodic Advances previously made by the applicable  Servicer,  the Master
      Servicer or the Trustee in respect of such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such  Distribution  Date, the Class B-1 Optimal  Principal Amount
will equal the lesser of (A) the Class B-1 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-1 Certificates.

            Class B-1 Percentage:  As to any  Distribution  Date, the percentage
calculated by multiplying the Subordinated Percentage by either (i) if any Class
B Certificates  (other than the Class B-1  Certificates) are eligible to receive
principal  distributions  for such  Distribution Date in accordance with Section
4.01(d),  a fraction,  the numerator of which is the Class B-1 Principal Balance
(determined as of the Determination  Date preceding such Distribution  Date) and
the denominator of which is the sum of the Principal  Balances of the Classes of
Class B  Certificates  eligible  to  receive  principal  distributions  for such
Distribution  Date in accordance  with the provisions of Section 4.01(d) or (ii)
except  as set  forth in  Section  4.01(d)(ii),  in the  event  that the Class B
Certificates (other than the Class B-1 Certificates) are not eligible to receive
distributions of principal in accordance with Section 4.01(d)(i), one.

            Class B-1 Prepayment  Percentage:  As to any Distribution  Date, the
percentage  calculated by multiplying the Subordinated  Prepayment Percentage by
either (i) if any Class B Certificates  (other than the Class B-1  Certificates)
are eligible to receive  principal  distributions  for such Distribution Date in
accordance with Section 4.01(d), a fraction, the numerator of which is the Class
B-1 Principal Balance  (determined as of the  Determination  Date preceding such
Distribution  Date)  and the  denominator  of which is the sum of the  Principal
Balances of the Classes of Class B  Certificates  eligible to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d) or (ii) except as set forth in Section 4.01(d)(ii), in the event
that the Class B Certificates  (other than the Class B-1  Certificates)  are not
eligible to receive  distributions  of  principal  in  accordance  with  Section
4.01(d)(i), one.

            Class B-1 Principal Balance: As to the first Determination Date, the
Original Class B-1 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-1 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-1 Certificates on
prior Distribution Dates (A) pursuant to Paragraph seventh of Section 4.01(a)(i)
and (B) as a  result  of a  Principal  Adjustment  and (b) the  Realized  Losses
allocated through such Determination Date to the Class B-1 Certificates pursuant
to  Section  4.02(b)  and (ii) the  Adjusted  Pool  Amount  as of the  preceding
Distribution  Date less the Class A Principal  Balance as of such  Determination
Date.

            Class B-1 Unpaid Interest  Shortfall:  As to any Distribution  Date,
the amount,  if any, by which the aggregate of the Class B-1 Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-1  Certificates on prior  Distribution  Dates pursuant to
Paragraph sixth of Section 4.01(a)(i).

            Class B-2 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-2 and Exhibit C hereto.

            Class B-2   Certificateholder:   The   registered   holder   of  a
Class B-2 Certificate.

            Class B-2  Distribution  Amount:  As to any  Distribution  Date, any
amount  distributable to the Holders of the Class B-2  Certificates  pursuant to
Paragraphs eighth, ninth and tenth of Section 4.01(a)(i).

            Class B-2 Interest  Shortfall Amount:  As to any Distribution  Date,
any amount by which the Interest  Accrual  Amount of the Class B-2  Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-2  Certificates on such  Distribution  Date pursuant to Paragraph
eighth of Section 4.01(a)(i).

            Class B-2 Optimal Principal Amount: As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) the Class B-2  Percentage of (A) the principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii) the Class B-2  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class  B-2  Prepayment  Percentage  of the  Scheduled  Principal
      Balance of such Mortgage Loan which,  during the month preceding the month
      of such  Distribution  Date,  was  repurchased  by the Seller  pursuant to
      Section 2.02 or 2.03; and

      (iv) the Class  B-2  Percentage  of the  excess  of the  unpaid  principal
      balance of such Mortgage Loan  substituted  for a defective  Mortgage Loan
      during  the month  preceding  the month in which  such  Distribution  Date
      occurs over the unpaid principal balance of such defective  Mortgage Loan,
      less the amount  allocable to the  principal  portion of any  unreimbursed
      Periodic Advances previously made by the applicable  Servicer,  the Master
      Servicer or the Trustee in respect of such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such  Distribution  Date, the Class B-2 Optimal  Principal Amount
will equal the lesser of (A) the Class B-2 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-2 Certificates.

            Class B-2 Percentage:  As to any  Distribution  Date,  except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated  Percentage by (ii) a fraction, the numerator of which is the Class
B-2 Principal Balance  (determined as of the  Determination  Date preceding such
Distribution  Date)  and the  denominator  of which is the sum of the  Principal
Balances of the Classes of Class B  Certificates  eligible to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d).  Except as set forth in Section 4.01(d)(ii),  in the event that
the  Class  B-2  Certificates  are not  eligible  to  receive  distributions  of
principal in accordance  with Section  4.01(d)(i),  the Class B-2 Percentage for
such Distribution Date will be zero.

            Class B-2 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence,  the percentage calculated by multiplying (i)
the  Subordinated  Prepayment  Percentage  by (ii) a fraction,  the numerator of
which is the Class B-2 Principal  Balance  (determined  as of the  Determination
Date preceding such  Distribution  Date) and the denominator of which is the sum
of the  Principal  Balances of the Classes of Class B  Certificates  eligible to
receive  principal  distributions  for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-2  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-2
Prepayment Percentage for such Distribution Date will be zero.

            Class B-2 Principal Balance: As to the first Determination Date, the
Original Class B-2 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-2 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-2 Certificates on
prior  Distribution  Dates (A) pursuant to Paragraph tenth of Section 4.01(a)(i)
and (B) as a  result  of a  Principal  Adjustment  and (b) the  Realized  Losses
allocated through such Determination Date to the Class B-2 Certificates pursuant
to  Section  4.02(b)  and (ii) the  Adjusted  Pool  Amount  as of the  preceding
Distribution  Date less the sum of the Class A  Principal  Balance and the Class
B-1 Principal Balance as of such Determination Date.

            Class B-2 Unpaid Interest  Shortfall:  As to any Distribution  Date,
the amount,  if any, by which the aggregate of the Class B-2 Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-2  Certificates on prior  Distribution  Dates pursuant to
Paragraph ninth of Section 4.01(a)(i).

            Class B-3 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-3 and Exhibit C hereto.

            Class B-3   Certificateholder:   The   registered   holder   of  a
Class B-3 Certificate.

            Class B-3  Distribution  Amount:  As to any  Distribution  Date, any
amount  distributable to the Holders of the Class B-3  Certificates  pursuant to
Paragraphs eleventh, twelfth and thirteenth of Section 4.01(a)(i).

            Class B-3 Interest  Shortfall Amount:  As to any Distribution  Date,
any amount by which the Interest  Accrual  Amount of the Class B-3  Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-3  Certificates on such  Distribution  Date pursuant to Paragraph
eleventh of Section 4.01(a)(i).

            Class B-3 Optimal Principal Amount: As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) the Class B-3  Percentage of (A) the principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii) the Class B-3  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class  B-3  Prepayment  Percentage  of the  Scheduled  Principal
      Balance of such Mortgage Loan which,  during the month preceding the month
      of such  Distribution  Date,  was  repurchased  by the Seller  pursuant to
      Section 2.02 or 2.03; and

      (iv) the Class  B-3  Percentage  of the  excess  of the  unpaid  principal
      balance of such Mortgage Loan  substituted  for a defective  Mortgage Loan
      during  the month  preceding  the month in which  such  Distribution  Date
      occurs over the unpaid principal balance of such defective  Mortgage Loan,
      less the amount  allocable to the  principal  portion of any  unreimbursed
      Periodic Advances previously made by the applicable  Servicer,  the Master
      Servicer or the Trustee in respect of such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such  Distribution  Date, the Class B-3 Optimal  Principal Amount
will equal the lesser of (A) the Class B-3 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-3 Certificates.

            Class B-3 Percentage:  As to any  Distribution  Date,  except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated  Percentage by (ii) a fraction, the numerator of which is the Class
B-3 Principal Balance  (determined as of the  Determination  Date preceding such
Distribution  Date)  and the  denominator  of which is the sum of the  Principal
Balances of the Classes of Class B  Certificates  eligible to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d).  Except as set forth in Section 4.01(d)(ii),  in the event that
the  Class  B-3  Certificates  are not  eligible  to  receive  distributions  of
principal in accordance  with Section  4.01(d)(i),  the Class B-3 Percentage for
such Distribution Date will be zero.

            Class B-3 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence,  the percentage calculated by multiplying (i)
the  Subordinated  Prepayment  Percentage  by (ii) a fraction,  the numerator of
which is the Class B-3 Principal  Balance  (determined  as of the  Determination
Date preceding such  Distribution  Date) and the denominator of which is the sum
of the  Principal  Balances of the Classes of Class B  Certificates  eligible to
receive  principal  distributions  for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-3  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-3
Prepayment Percentage for such Distribution Date will be zero.

            Class B-3 Principal Balance: As to the first Determination Date, the
Original Class B-3 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-3 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-3 Certificates on
prior  Distribution  Dates (A)  pursuant  to  Paragraph  thirteenth  of  Section
4.01(a)(i)  and (B) as a result of a Principal  Adjustment  and (b) the Realized
Losses allocated through such  Determination  Date to the Class B-3 Certificates
pursuant  to  Section  4.02(b)  and  (ii) the  Adjusted  Pool  Amount  as of the
preceding  Distribution Date less the sum of the Class A Principal Balance,  the
Class B-1  Principal  Balance  and the Class B-2  Principal  Balance  as of such
Determination Date.

            Class B-3 Unpaid Interest  Shortfall:  As to any Distribution  Date,
the amount,  if any, by which the aggregate of the Class B-3 Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-3  Certificates on prior  Distribution  Dates pursuant to
Paragraph twelfth of Section 4.01(a)(i).

            Class B-4 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-4 and Exhibit C hereto.

            Class B-4   Certificateholder:   The   registered   holder   of  a
Class B-4 Certificate.

            Class B-4  Distribution  Amount:  As to any  Distribution  Date, any
amount  distributable to the Holders of the Class B-4  Certificates  pursuant to
Paragraphs fourteenth, fifteenth, and sixteenth of Section 4.01(a)(i).

            Class B-4 Interest  Shortfall Amount:  As to any Distribution  Date,
any amount by which the Interest  Accrual  Amount of the Class B-4  Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-4  Certificates on such  Distribution  Date pursuant to Paragraph
fourteenth of Section 4.01(a)(i).

            Class B-4 Optimal Principal Amount: As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) the Class B-4  Percentage of (A) the principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii) the Class B-4  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class  B-4  Prepayment  Percentage  of the  Scheduled  Principal
      Balance of such Mortgage Loan which,  during the month preceding the month
      of such  Distribution  Date,  was  repurchased  by the Seller  pursuant to
      Section 2.02 or 2.03; and

      (iv) the Class  B-4  Percentage  of the  excess  of the  unpaid  principal
      balance of such Mortgage Loan  substituted  for a defective  Mortgage Loan
      during  the month  preceding  the month in which  such  Distribution  Date
      occurs over the unpaid principal balance of such defective  Mortgage Loan,
      less the amount  allocable to the  principal  portion of any  unreimbursed
      Periodic Advances previously made by the applicable  Servicer,  the Master
      Servicer or the Trustee in respect of such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such  Distribution  Date, the Class B-4 Optimal  Principal Amount
will equal the lesser of (A) the Class B-4 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-4 Certificates.

            Class B-4 Percentage:  As to any  Distribution  Date,  except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated  Percentage by (ii) a fraction, the numerator of which is the Class
B-4 Principal Balance  (determined as of the  Determination  Date preceding such
Distribution  Date)  and the  denominator  of which is the sum of the  Principal
Balances of the Classes of Class B  Certificates  eligible to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d).  Except as set forth in Section 4.01(d)(ii),  in the event that
the  Class  B-4  Certificates  are not  eligible  to  receive  distributions  of
principal in accordance  with Section  4.01(d)(i),  the Class B-4 Percentage for
such Distribution Date will be zero.

            Class B-4 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence,  the percentage calculated by multiplying (i)
the  Subordinated  Prepayment  Percentage  by (ii) a fraction,  the numerator of
which is the Class B-4 Principal  Balance  (determined  as of the  Determination
Date preceding such  Distribution  Date) and the denominator of which is the sum
of the  Principal  Balances of the Classes of Class B  Certificates  eligible to
receive  principal  distributions  for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-4  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-4
Prepayment Percentage for such Distribution Date will be zero.

            Class B-4 Principal Balance: As to the first Determination Date, the
Original Class B-4 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-4 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-4 Certificates on
prior  Distribution  Dates  (A)  pursuant  to  Paragraph  sixteenth  of  Section
4.01(a)(i)  and (B) as a result of a Principal  Adjustment  and (b) the Realized
Losses allocated through such  Determination  Date to the Class B-4 Certificates
pursuant  to  Section  4.02(b)  and  (ii) the  Adjusted  Pool  Amount  as of the
preceding  Distribution Date less the sum of the Class A Principal Balance,  the
Class B-1 Principal  Balance,  the Class B-2 Principal Balance and the Class B-3
Principal Balance as of such Determination Date.

            Class B-4 Unpaid Interest  Shortfall:  As to any Distribution  Date,
the amount,  if any, by which the aggregate of the Class B-4 Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-4  Certificates on prior  Distribution  Dates pursuant to
Paragraph fifteenth of Section 4.01(a)(i).

            Class B-5 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-5 and Exhibit C hereto.

            Class B-5   Certificateholder:   The   registered   holder   of  a
Class B-5 Certificate.

            Class B-5  Distribution  Amount:  As to any  Distribution  Date, any
amount  distributable to the Holders of the Class B-5  Certificates  pursuant to
Paragraphs seventeenth, eighteenth, and nineteenth of Section 4.01(a)(i).

            Class B-5 Interest  Shortfall Amount:  As to any Distribution  Date,
any amount by which the Interest  Accrual  Amount of the Class B-5  Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-5  Certificates on such  Distribution  Date pursuant to Paragraph
seventeenth of Section 4.01(a).

            Class B-5 Optimal Principal Amount: As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) the Class B-5  Percentage of (A) the principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii) the Class B-5  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class  B-5  Prepayment  Percentage  of the  Scheduled  Principal
      Balance of such Mortgage Loan which,  during the month preceding the month
      of such  Distribution  Date,  was  repurchased  by the Seller  pursuant to
      Section 2.02 or 2.03; and

      (iv) the Class  B-5  Percentage  of the  excess  of the  unpaid  principal
      balance of such Mortgage Loan  substituted  for a defective  Mortgage Loan
      during  the month  preceding  the month in which  such  Distribution  Date
      occurs over the unpaid principal balance of such defective  Mortgage Loan,
      less the amount  allocable to the  principal  portion of any  unreimbursed
      Periodic Advances previously made by the applicable  Servicer,  the Master
      Servicer or the Trustee in respect of such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such  Distribution  Date, the Class B-5 Optimal  Principal Amount
will equal the lesser of (A) the Class B-5 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-5 Certificates.

            Class B-5 Percentage:  As to any  Distribution  Date,  except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated  Percentage by (ii) a fraction, the numerator of which is the Class
B-5 Principal Balance  (determined as of the  Determination  Date preceding such
Distribution  Date)  and the  denominator  of which is the sum of the  Principal
Balances of the Classes of Class B  Certificates  eligible to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d).  Except as set forth in Section 4.01(d)(ii),  in the event that
the  Class  B-5  Certificates  are not  eligible  to  receive  distributions  of
principal in accordance  with Section  4.01(d)(i),  the Class B-5 Percentage for
such Distribution Date will be zero.

            Class B-5 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence,  the percentage calculated by multiplying (i)
the  Subordinated  Prepayment  Percentage  by (ii) a fraction,  the numerator of
which is the Class B-5 Principal  Balance  (determined  as of the  Determination
Date preceding such  Distribution  Date) and the denominator of which is the sum
of the  Principal  Balances of the Classes of Class B  Certificates  eligible to
receive  principal  distributions  for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-5  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-5
Prepayment Percentage for such Distribution Date will be zero.

            Class B-5 Principal Balance: As to the first Determination Date, the
Original Class B-5 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-5 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-5 Certificates on
prior  Distribution  Dates (A)  pursuant  to  Paragraph  nineteenth  of  Section
4.01(a)(i)  and (B) as a result of a Principal  Adjustment  and (b) the Realized
Losses allocated through such  Determination  Date to the Class B-5 Certificates
pursuant  to  Section  4.02(b)  and  (ii) the  Adjusted  Pool  Amount  as of the
preceding  Distribution Date less the sum of the Class A Principal Balance,  the
Class B-1  Principal  Balance,  the Class B-2 Principal  Balance,  the Class B-3
Principal Balance and the Class B-4 Principal  Balance as of such  Determination
Date.

            Class B-5 Unpaid Interest  Shortfall:  As to any Distribution  Date,
the amount,  if any, by which the aggregate of the Class B-5 Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-5  Certificates on prior  Distribution  Dates pursuant to
Paragraph eighteenth of Section 4.01(a)(i).

            Class B-6 Certificate:  Any one of the Certificates  executed by the
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-6 and Exhibit C hereto.

            Class B-6   Certificateholder:   The   registered   holder   of  a
Class B-6 Certificate.

            Class B-6  Distribution  Amount:  As to any  Distribution  Date, any
amount  distributable to the Holders of the Class B-6  Certificates  pursuant to
Paragraphs twentieth, twenty-first and twenty-second of Section 4.01(a)(i).

            Class B-6 Interest  Shortfall Amount:  As to any Distribution  Date,
any amount by which the Interest  Accrual  Amount of the Class B-6  Certificates
with respect to such Distribution Date exceeds the amount distributed in respect
of the Class B-6  Certificates on such  Distribution  Date pursuant to Paragraph
twentieth of Section 4.01(a)(i).

            Class B-6 Optimal Principal Amount: As to any Distribution  Date, an
amount equal to the sum, as to each Outstanding Mortgage Loan, of the product of
(x) the Non-PO Fraction with respect to such Mortgage Loan and (y) the sum of:

      (i) the Class B-6  Percentage of (A) the principal  portion of the Monthly
      Payment due on the Due Date  occurring  in the month of such  Distribution
      Date on such Mortgage  Loan,  less (B) if the  Bankruptcy  Loss Amount has
      been reduced to zero, the principal  portion of any Debt Service Reduction
      with respect to such Mortgage Loan;

      (ii) the Class B-6  Prepayment  Percentage  of all  Unscheduled  Principal
      Receipts  that were  received by a Servicer  with respect to such Mortgage
      Loan during the Applicable  Unscheduled  Principal Receipt Period relating
      to such Distribution Date for each applicable type of
      Unscheduled Principal Receipt;

      (iii) the Class  B-6  Prepayment  Percentage  of the  Scheduled  Principal
      Balance of such Mortgage Loan which,  during the month preceding the month
      of such  Distribution  Date,  was  repurchased  by the Seller  pursuant to
      Section 2.02 or 2.03; and

      (iv) the Class  B-6  Percentage  of the  excess  of the  unpaid  principal
      balance of such Mortgage Loan  substituted  for a defective  Mortgage Loan
      during  the month  preceding  the month in which  such  Distribution  Date
      occurs over the unpaid principal balance of such defective  Mortgage Loan,
      less the amount  allocable to the  principal  portion of any  unreimbursed
      Periodic Advances previously made by the applicable  Servicer,  the Master
      Servicer or the Trustee in respect of such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Class and such  Distribution  Date, the Class B-6 Optimal  Principal Amount
will equal the lesser of (A) the Class B-6 Optimal  Principal Amount  calculated
as described in the preceding  provisions and (B) the Adjusted Principal Balance
for the Class B-6 Certificates.

            Class B-6 Percentage:  As to any  Distribution  Date,  except as set
forth in the next  sentence,  the percentage  calculated by multiplying  (i) the
Subordinated  Percentage by (ii) a fraction, the numerator of which is the Class
B-6 Principal Balance  (determined as of the  Determination  Date preceding such
Distribution  Date)  and the  denominator  of which is the sum of the  Principal
Balances of the Classes of Class B  Certificates  eligible to receive  principal
distributions  for such  Distribution  Date in accordance with the provisions of
Section 4.01(d).  Except as set forth in Section 4.01(d)(ii),  in the event that
the  Class  B-6  Certificates  are not  eligible  to  receive  distributions  of
principal in accordance with the provisions of Section 4.01(d)(i), the Class B-6
Percentage for such Distribution Date will be zero.

            Class B-6 Prepayment Percentage: As to any Distribution Date, except
as set forth in the next sentence,  the percentage calculated by multiplying (i)
the  Subordinated  Prepayment  Percentage  by (ii) a fraction,  the numerator of
which is the Class B-6 Principal  Balance  (determined  as of the  Determination
Date preceding such  Distribution  Date) and the denominator of which is the sum
of the  Principal  Balances of the Classes of Class B  Certificates  eligible to
receive  principal  distributions  for such Distribution Date in accordance with
the provisions of Section 4.01(d).  Except as set forth in Section  4.01(d)(ii),
in the  event  that the Class  B-6  Certificates  are not  eligible  to  receive
distributions  of  principal  in  accordance  with  the  provisions  of  Section
4.01(d)(i),  the Class B-6 Prepayment Percentage for such Distribution Date will
be zero.

            Class B-6 Principal Balance: As to the first Determination Date, the
Original Class B-6 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-6 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-6 Certificates on
prior  Distribution  Dates  pursuant  to  Paragraph   twenty-second  of  Section
4.01(a)(i) and (b) the Realized Losses allocated through such Determination Date
to the Class B-6 Certificates  pursuant to Section 4.02(b) and (ii) the Adjusted
Pool  Amount as of the  preceding  Distribution  Date less the Class A Principal
Balance,  the Class B-1 Principal Balance,  the Class B-2 Principal Balance, the
Class B-3 Principal  Balance,  the Class B-4 Principal Balance and the Class B-5
Principal Balance as of such Determination Date.

            Class B-6 Unpaid Interest  Shortfall:  As to any Distribution  Date,
the amount,  if any, by which the aggregate of the Class B-6 Interest  Shortfall
Amounts for prior Distribution Dates is in excess of the amounts  distributed in
respect of the Class B-6  Certificates on prior  Distribution  Dates pursuant to
Paragraph twenty-first of Section 4.01(a)(i).

            Class B-L1  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class B-L2  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class B-L3  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class B-L4  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class B-L5  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Class B-L6  Interest:  A regular  interest in the  Lower-Tier  REMIC
which is held as an asset of the  Upper-Tier  REMIC and is  entitled  to monthly
distributions as provided in Section 4.01(a)(ii) hereof.

            Clearing  Agency:  An  organization   registered  as  a  "clearing
agency"  pursuant to Section 17A  of the  Securities  Exchange Act of 1934, as
amended. The initial Clearing Agency shall be The Depository Trust Company.

            Clearing  Agency  Participant:  A broker,  dealer,  bank,  financial
institution  or other  Person  for whom a  Clearing  Agency  effects  book-entry
transfers of securities deposited with the Clearing Agency.

            Closing Date:  The date of initial  issuance of the  Certificates,
as set forth in Section 11.21.

            Code:  The Internal  Revenue Code of 1986, as it may be amended from
time to time, any successor statutes thereto,  and applicable U.S. Department of
the Treasury temporary or final regulations promulgated thereunder.

            Compensating  Interest:  As to any Distribution  Date, the lesser of
(a) the  product  of (i) 1/12th of 0.20% and (ii) the Pool  Scheduled  Principal
Balance  for such  Distribution  Date  and (b) the  Available  Master  Servicing
Compensation for such Distribution Date.

            Co-op  Shares:   Shares  issued  by  private   non-profit  housing
corporations.

            Corporate Trust Office: The principal office of the Trustee at which
at any particular time its corporate trust business shall be administered, which
office,  at the date of the execution of this instrument is located at 230 South
Tryon Street, Charlotte, North Carolina 28288.

            Corresponding  Upper-Tier  Class or Classes:  As to the  following
Uncertificated  Lower-Tier  Interests,  the Corresponding  Upper-Tier Class or
Classes as follows:



      Uncertificated Lower-Tier
      Interest                        Corresponding Upper-Tier Class or Classes

      Class A-L1 Interest             Class A-1 Certificates, Class A-2
                                      Certificates, Class A-3 Certificates,
                                      Class A-4 Certificates and Class A-11
                                      Certificates.

      Class A-L5 Interest             Class A-5 Certificates and Class A-6
                                      Certificates

      Class A-L7 Interest             Class A-7 Certificates and Class A-10
                                      Certificates

      Class A-L8 Interest             Class A-8 Certificates and Class A-9
                                      Certificates

      Class A-L12 Interest            Class A-12 Certificates and Class A-13
                                      Certificates

      Class A-L14 Interest            Class A-14 Certificates

      Class A-LPO Interest            Class A-PO Certificates

      Class A-LUR Interest            Class A-R Certificate

      Class B-L1 Interest             Class B-1 Certificates

      Class B-L2 Interest             Class B-2 Certificates

      Class B-L3 Interest             Class B-3 Certificates

      Class B-L4 Interest             Class B-4 Certificates

      Class B-L5 Interest             Class B-5 Certificates

      Class B-L6 Interest             Class B-6 Certificates

            Cross-Over   Date:  The   Distribution   Date  preceding  the  first
Distribution Date on which the Class A Percentage (determined pursuant to clause
(ii) of the definition thereof) equals or exceeds 100%.

            Cross-Over Date Interest Shortfall: With respect to any Distribution
Date that occurs on or after the Cross-Over Date with respect to any Unscheduled
Principal Receipt (other than a Prepayment in Full):

            (A)   in the  case  where  the  Applicable  Unscheduled  Principal
                  Receipt  Period is the  Mid-Month  Receipt  Period  and such
                  Unscheduled  Principal  Receipt is received by the  Servicer
                  on or after the  Determination  Date in the month  preceding
                  the month of such  Distribution  Date but prior to the first
                  day of the month of such  Distribution  Date,  the amount of
                  interest  that  would  have  accrued  at  the  Net  Mortgage
                  Interest  Rate on the amount of such  Unscheduled  Principal
                  Receipt  from the day of its  receipt  or, if  earlier,  its
                  application  by the  Servicer  through  the  last day of the
                  month preceding the month of such Distribution Date; and

            (B)   in the  case  where  the  Applicable  Unscheduled  Principal
                  Receipt  Period is the Prior Month  Receipt  Period and such
                  Unscheduled  Principal  Receipt is received by the  Servicer
                  during the month  preceding  the month of such  Distribution
                  Date,  the amount of interest that would have accrued at the
                  Net   Mortgage   Interest   Rate  on  the   amount  of  such
                  Unscheduled  Principal  Receipt  from the day of its receipt
                  or, if earlier,  its application by the Servicer through the
                  last day of the month in which  such  Unscheduled  Principal
                  Receipt is received.

            Current Class A Interest Distribution Amount: As to any Distribution
Date,  the amount  distributed in respect of the Classes of Class A Certificates
pursuant to Paragraph first of Section 4.01(a)(i) on such Distribution Date.

            Current Class B Interest Distribution Amount: As to any Distribution
Date,  the amount  distributed in respect of the Classes of Class B Certificates
pursuant to Paragraphs  fifth,  eighth,  eleventh,  fourteenth,  seventeenth and
twentieth of Section 4.01(a)(i) on such Distribution Date.

            Current Class B-1 Fractional  Interest:  As to any Distribution Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the Principal  Balances of the Class B-2, Class B-3, Class B-4, Class
B-5 and  Class  B-6  Certificates  by the sum of the  Class A  Non-PO  Principal
Balance and the Class B Principal  Balance.  As to the first  Distribution Date,
the Original Class B-1 Fractional Interest.

            Current Class B-2 Fractional  Interest:  As to any Distribution Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the  Principal  Balances of the Class B-3,  Class B-4,  Class B-5 and
Class B-6  Certificates by the sum of the Class A Non-PO  Principal  Balance and
the Class B Principal  Balance.  As to the first Distribution Date, the Original
Class B-2 Fractional Interest.

            Current Class B-3 Fractional  Interest:  As to any Distribution Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the  Principal  Balances  of the Class  B-4,  Class B-5 and Class B-6
Certificates by the sum of the Class A Non-PO Principal  Balance and the Class B
Principal  Balance.  As to the first  Distribution  Date, the Original Class B-3
Fractional Interest.

            Current Class B-4 Fractional  Interest:  As to any Distribution Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the sum of the Principal Balances of the Class B-5 and Class B-6 Certificates by
the sum of the  Class A  Non-PO  Principal  Balance  and the  Class B  Principal
Balance.  As to the first  Distribution  Date, the Original Class B-4 Fractional
Interest.

            Current Class B-5 Fractional  Interest:  As to any Distribution Date
subsequent to the first Distribution  Date, the percentage  obtained by dividing
the Principal  Balance of the Class B-6  Certificates  by the sum of the Class A
Non-PO  Principal  Balance  and the Class B Principal  Balance.  As to the first
Distribution Date, the Original Class B-5 Fractional Interest.

            Curtailment:  Any Principal  Prepayment  made by a Mortgagor which
is not a Prepayment in Full.

            Custodial Agreement:  The Custodial Agreement,  if any, from time to
time in effect  between the  Custodian  named  therein,  the Seller,  the Master
Servicer and the Trustee,  substantially in the form of Exhibit E hereto, as the
same may be amended or modified from time to time in  accordance  with the terms
thereof.

            Custodial P&I Account: The Custodial P&I Account, as defined in each
of the Servicing Agreements,  with respect to the Mortgage Loans. In determining
whether the Custodial P&I Account under any Servicing  Agreement is "acceptable"
to the Master  Servicer  (as may be  required  by the  definition  of  "Eligible
Account"  contained in the  Servicing  Agreements),  the Master  Servicer  shall
require  that  any  such  account  shall  be  acceptable  to each of the  Rating
Agencies.

            Custodian:  Initially, the Trustee, and thereafter the Custodian, if
any,  hereafter  appointed  by the  Trustee  pursuant  to Section  8.13,  or its
successor in interest under the Custodial Agreement. The Custodian may (but need
not)  be the  Trustee  or any  Person  directly  or  indirectly  controlling  or
controlled by or under common control of either of them. Neither a Servicer, nor
the  Seller nor the  Master  Servicer  nor any  Person  directly  or  indirectly
controlling or controlled by or under common control with any such Person may be
appointed Custodian.

            Cut-Off  Date:  The first day of the month of initial  issuance of
the Certificates as set forth in Section 11.02.

            Cut-Off Date  Aggregate  Principal  Balance:  The aggregate of the
Cut-Off  Date  Principal  Balances  of the  Mortgage  Loans is as set forth in
Section 11.03.

            Cut-Off Date Principal Balance: As to each Mortgage Loan, its unpaid
principal  balance as of the close of business on the Cut-Off  Date (but without
giving effect to any Unscheduled  Principal  Receipts received or applied on the
Cut-Off Date), reduced by all payments of principal due on or before the Cut-Off
Date and not paid, and increased by scheduled  monthly payments of principal due
after the Cut-Off  Date but  received  by the related  Servicer on or before the
Cut-Off Date.

            DCR:  Duff and Phelps  Credit  Rating  Co.,  or its  successor  in
interest.

            Debt  Service  Reduction:  With  respect  to any  Mortgage  Loan,  a
reduction in the scheduled  Monthly Payment for such Mortgage Loan by a court of
competent  jurisdiction in a proceeding under the Bankruptcy Code, except such a
reduction constituting a Deficient Valuation.

            Deficient Valuation:  With respect to any Mortgage Loan, a valuation
by a court of competent jurisdiction of the Mortgaged Property in an amount less
than the then-outstanding indebtedness under the Mortgage Loan, or any reduction
in the amount of principal to be paid in connection  with any scheduled  Monthly
Payment that results in a permanent forgiveness of principal, which valuation or
reduction results from a proceeding under the Bankruptcy Code.

            Definitive Certificates:  As defined in Section 5.01(b).

            Denomination:  The  amount,  if any,  specified  on the face of each
Certificate  (other than the Class A-6 Certificates)  representing the principal
portion of the  Cut-Off  Date  Aggregate  Principal  Balance  evidenced  by such
Certificate. As to the Class A-6 Certificates,  the amount specified on the face
of such Certificate  representing the portion of the Original Class A-6 Notional
Amount.

            Determination  Date:  The  17th  day of the  month  in  which  the
related  Distribution  Date occurs, or if such 17th day is not a Business Day,
the Business Day preceding such 17th day.

            Discount  Mortgage  Loan:  A  Mortgage  Loan  with a Net  Mortgage
Interest Rate of less than 6.500%.

            Distribution Date: The 25th day of any month, beginning in the month
following the month of initial issuance of the Certificates, or if such 25th day
is not a Business Day, the Business Day following such 25th day.

            Due  Date:  With  respect  to any  Mortgage  Loan,  the day of the
month in which the Monthly  Payment on such  Mortgage  Loan is scheduled to be
paid.

            Eligible Account:  One or more accounts (i) that are maintained with
a depository institution (which may be the Master Servicer) whose long-term debt
obligations  (or,  in the case of a  depository  institution  which is part of a
holding company structure, the long-term debt obligations of such parent holding
company)  at the  time of  deposit  therein  are  rated  at  least  "AA" (or the
equivalent) by each of the Rating Agencies, (ii) the deposits in which are fully
insured  by the FDIC  through  either  the Bank  Insurance  Fund or the  Savings
Association  Insurance Fund, (iii) the deposits in which are insured by the FDIC
through either the Bank Insurance Fund or the Savings Association Insurance Fund
(to the  limit  established  by the FDIC) and the  uninsured  deposits  in which
accounts are otherwise secured,  as evidenced by an Opinion of Counsel delivered
to the Trustee, such that the Trustee, on behalf of the Certificateholders has a
claim with respect to the funds in such accounts or a perfected  first  security
interest  against any collateral  securing such funds that is superior to claims
of any other  depositors or creditors of the depository  institution  with which
such accounts are maintained,  (iv) that are trust accounts  maintained with the
trust department of a federal or state chartered depository institution or trust
company  acting in its  fiduciary  capacity  or (v) such other  account  that is
acceptable  to each of the Rating  Agencies and would not cause the Trust Estate
to fail to qualify as two  separate  REMICs or result in the  imposition  of any
federal tax on either of the Upper-Tier REMIC or the Lower-Tier REMIC.

            Eligible Investments:  At any time, any one or more of the following
obligations  and  securities  which shall mature not later than the Business Day
preceding the  Distribution  Date next  succeeding the date of such  investment,
provided that such investments continue to qualify as "cash flow investments" as
defined in Code Section 860G(a)(6):

      (i)  obligations  of the United  States of America or any agency  thereof,
      provided such  obligations  are backed by the full faith and credit of the
      United States of America;

      (ii) general obligations of or obligations  guaranteed by any state of the
      United States of America or the District of Columbia receiving the highest
      short-term  or highest  long-term  rating of each Rating  Agency,  or such
      lower rating as would not result in the  downgrading  or withdrawal of the
      rating then assigned to any of the Certificates by either Rating Agency or
      result in any of such rated  Certificates  being  placed on credit  review
      status (other than for possible upgrading) by either Rating Agency;

      (iii)  commercial  or  finance  company  paper  which is then rated in the
      highest  long-term  commercial or finance company paper rating category of
      each  Rating  Agency or the  highest  short-term  rating  category of each
      Rating  Agency,  or such lower rating  category as would not result in the
      downgrading  or  withdrawal  of the  rating  then  assigned  to any of the
      Certificates  by either  Rating  Agency  or  result  in any of such  rated
      Certificates being placed on credit review status (other than for possible
      upgrading) by either Rating Agency;

      (iv)  certificates of deposit,  demand or time deposits,  federal funds or
      banker's acceptances issued by any depository institution or trust company
      incorporated  under the laws of the United  States or of any state thereof
      and subject to supervision and examination by federal and/or state banking
      authorities, provided that the commercial paper and/or debt obligations of
      such  depository  institution  or  trust  company  (or in the  case of the
      principal  depository   institution  in  a  holding  company  system,  the
      commercial  paper or debt  obligations  of such holding  company) are then
      rated in the highest  short-term or the highest  long-term rating category
      for such securities of each of the Rating  Agencies,  or such lower rating
      categories  as would not result in the  downgrading  or  withdrawal of the
      rating then assigned to any of the Certificates by either Rating Agency or
      result in any of such rated  Certificates  being  placed on credit  review
      status (other than for possible upgrading) by either Rating Agency;

      (v)  guaranteed  reinvestment  agreements  issued by any  bank,  insurance
      company or other corporation  acceptable to each Rating Agency at the time
      of the issuance of such agreements;

      (vi)  repurchase  agreements on  obligations  with respect to any security
      described  in clauses  (i) or (ii) above or any other  security  issued or
      guaranteed  by an  agency  or  instrumentality  of the  United  States  of
      America,  in either case  entered into with a  depository  institution  or
      trust company (acting as principal) described in (iv) above;

      (vii) securities (other than stripped bonds or stripped coupon securities)
      bearing  interest  or  sold  at  a  discount  issued  by  any  corporation
      incorporated  under the laws of the United  States of America or any state
      thereof which,  at the time of such  investment or contractual  commitment
      providing for such investment, are then rated in the highest short-term or
      the highest  long-term  rating category by each Rating Agency,  or in such
      lower rating category as would not result in the downgrading or withdrawal
      of the rating then  assigned to any of the  Certificates  by either Rating
      Agency or result in any of such rated  Certificates being placed on credit
      review status (other than for possible upgrading) by either Rating Agency;
      and

      (viii) such other  investments  acceptable  to each Rating Agency as would
      not  result  in  the  downgrading  of  the  rating  then  assigned  to the
      Certificates  by either  Rating  Agency  or  result  in any of such  rated
      Certificates being placed on credit review status (other than for possible
      upgrading) by either Rating Agency.

            In no event shall an  instrument  be an Eligible  Investment if such
instrument  evidences either (i) a right to receive only interest  payments with
respect to the obligations  underlying such  instrument,  or (ii) both principal
and interest  payments derived from  obligations  underlying such instrument and
the interest and principal  payments with respect to such  instrument  provide a
yield to maturity at the date of investment of greater than 120% of the yield to
maturity at par of such underlying obligations.

            ERISA:  The Employee  Retirement  Income  Security Act of 1974, as
amended.

            ERISA Prohibited Holder:  As defined in Section 5.02(d).

            Errors and Omissions  Policy:  As defined in each of the Servicing
Agreements.

            Event of Default:  Any of the events specified in Section 7.01.

            Excess  Bankruptcy Loss: With respect to any  Distribution  Date and
any  Mortgage  Loan as to  which a  Bankruptcy  Loss is  realized  in the  month
preceding the month of such  Distribution  Date,  (i) if the  Aggregate  Current
Bankruptcy   Losses  with   respect  to  such   Distribution   Date  exceed  the
then-applicable Bankruptcy Loss Amount, then the portion of such Bankruptcy Loss
represented by the ratio of (a) the excess of the Aggregate  Current  Bankruptcy
Losses  over the  then-applicable  Bankruptcy  Loss  Amount,  divided by (b) the
Aggregate Current  Bankruptcy Losses or (ii) if the Aggregate Current Bankruptcy
Losses  with  respect  to such  Distribution  Date are less than or equal to the
then-applicable  Bankruptcy Loss Amount, then zero. In addition,  any Bankruptcy
Loss occurring  with respect to a Mortgage Loan on or after the Cross-Over  Date
will be an Excess Bankruptcy Loss.

            Excess  Fraud Loss:  With respect to any  Distribution  Date and any
Mortgage  Loan as to which a Fraud Loss is realized in the month  preceding  the
month of such Distribution  Date, (i) if the Aggregate Current Fraud Losses with
respect to such Distribution Date exceed the then-applicable  Fraud Loss Amount,
then the portion of such Fraud Loss  represented  by the ratio of (a) the excess
of the  Aggregate  Current  Fraud  Losses  over the  then-applicable  Fraud Loss
Amount,  divided  by (b) the  Aggregate  Current  Fraud  Losses,  or (ii) if the
Aggregate  Current Fraud Losses with respect to such  Distribution Date are less
than or equal to the then-applicable  Fraud Loss Amount, then zero. In addition,
any  Fraud  Loss  occurring  with  respect  to a  Mortgage  Loan on or after the
Cross-Over Date will be an Excess Fraud Loss.

            Excess Special Hazard Loss:  With respect to any  Distribution  Date
and any Mortgage Loan as to which a Special Hazard Loss is realized in the month
preceding the month of such  Distribution  Date,  (i) if the  Aggregate  Current
Special  Hazard  Losses  with  respect  to such  Distribution  Date  exceed  the
then-applicable  Special  Hazard Loss  Amount,  then the portion of such Special
Hazard Loss represented by the ratio of (a) the excess of the Aggregate  Current
Special  Hazard  Losses over the  then-applicable  Special  Hazard Loss  Amount,
divided by (b) the  Aggregate  Current  Special  Hazard  Losses,  or (ii) if the
Aggregate  Current Special Hazard Losses with respect to such  Distribution Date
are less than or equal to the  then-applicable  Special Hazard Loss Amount, then
zero. In addition,  any Special Hazard Loss occurring with respect to a Mortgage
Loan on or after the Cross-Over Date will be an Excess Special Hazard Loss.

            Exhibit F-1 Mortgage Loan:  Any of the Mortgage Loans  identified in
Exhibit  F-1  hereto,  as  such  Exhibit  may be  amended  from  time to time in
connection with a substitution  pursuant to Section 2.02, which Mortgage Loan is
serviced in locations other than Frederick, Maryland under the Norwest Servicing
Agreement.

            Exhibit F-2 Mortgage Loan:  Any of the Mortgage Loans  identified in
Exhibit  F-2  hereto,  as  such  Exhibit  may be  amended  from  time to time in
connection with a substitution  pursuant to Section 2.02, which Mortgage Loan is
serviced in Frederick, Maryland under the Norwest Servicing Agreement.

            Exhibit F-3 Mortgage Loan:  Any of the Mortgage Loans  identified in
Exhibit  F-3  hereto,  as  such  Exhibit  may be  amended  from  time to time in
connection with a substitution  pursuant to Section 2.02, which Mortgage Loan is
serviced under an Other Servicing Agreement.

            FDIC: The Federal Deposit  Insurance  Corporation or any successor
thereto.

            FHLMC:   The  Federal  Home  Loan  Mortgage   Corporation  or  any
successor thereto.

            Fidelity Bond:  As defined in each of the Servicing Agreements.

            Final  Distribution  Date:  The  Distribution  Date on  which  the
final  distribution  in  respect  of the  Certificates  is  made  pursuant  to
Section 9.01.

            Final Scheduled Maturity Date: The Final Scheduled Maturity Date for
the Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class A-7,
Class A-8,  Class A-9, Class A-10,  Class A-11,  Class A-12,  Class A-13,  Class
A-14,  Class A-PO, Class A-R, Class A-LR, Class B-1, Class B-2, Class B-3, Class
B-4, Class B-5 and Class B-6 Certificates is June 25, 2029 which  corresponds to
the "latest  possible  maturity date" for purposes of Section  860G(a)(1) of the
Internal Revenue Code of 1986, as amended.

            Fixed  Retained  Yield:  The fixed  percentage  of  interest on each
Mortgage Loan with a Mortgage  Interest Rate greater than the sum of (a) 6.500%,
(b) the Servicing Fee Rate and (c) the Master  Servicing Fee Rate, which will be
determined on a loan by loan basis and will equal the Mortgage  Interest Rate on
each Mortgage  Loan minus the sum of (a), (b) and (c),  which is not assigned to
and not part of the Trust Estate.

            Fixed Retained Yield Rate: With respect to each Mortgage Loan, a per
annum rate equal to the greater of (a) zero and (b) the Mortgage  Interest  Rate
on such Mortgage  Loan minus the sum of (i) 6.500%,  (ii) the Servicing Fee Rate
and (iii) the Master Servicing Fee Rate.

            FNMA:  Fannie Mae or any successor thereto.

            Foreclosure  Profits:  As to any Distribution  Date, the excess,  if
any,  of (i) Net  Liquidation  Proceeds  in respect of each  Mortgage  Loan that
became a Liquidated  Loan during the Applicable  Unscheduled  Principal  Receipt
Period with respect to Full Unscheduled Principal Receipts for such Distribution
Date over (ii) the sum of the unpaid  principal  balance of each such Liquidated
Loan plus accrued and unpaid interest at the applicable  Mortgage  Interest Rate
on the unpaid principal  balance thereof from the Due Date to which interest was
last paid by the Mortgagor  (or, in the case of a Liquidated  Loan that had been
an REO  Mortgage  Loan,  from the Due Date to which  interest was last deemed to
have been  paid) to the first day of the month in which such  Distribution  Date
occurs.

            Fraud  Loss:  A  Liquidated  Loan Loss as to which there was fraud
in the origination of such Mortgage Loan.

            Fraud Loss  Amount:  As of any  Distribution  Date after the Cut-Off
Date an amount equal to: (X) prior to the first  anniversary of the Cut-Off Date
an amount  equal to  $6,003,264.37  minus the  aggregate  amount of Fraud Losses
allocated  solely to the Class B Certificates in accordance with Section 4.02(a)
since the Cut-Off Date, and (Y) from the first through fifth  anniversary of the
Cut-Off  Date, an amount equal to (1) the lesser of (a) the Fraud Loss Amount as
of the  most  recent  anniversary  of the  Cut-Off  Date  and (b)  1.00%  of the
aggregate  outstanding  principal balance of all of the Mortgage Loans as of the
most recent anniversary of the Cut-Off Date minus (2) the Fraud Losses allocated
solely to the Class B Certificates  in accordance with Section 4.02(a) since the
most recent anniversary of the Cut-Off Date. On and after the Cross-Over Date or
after the fifth  anniversary  of the Cut-Off Date the Fraud Loss Amount shall be
zero.

            Full  Unscheduled   Principal  Receipt:  Any  Unscheduled  Principal
Receipt  with  respect to a Mortgage  Loan (i) in the amount of the  outstanding
principal  balance of such Mortgage Loan and resulting in the full  satisfaction
of such  Mortgage  Loan or (ii)  representing  Liquidation  Proceeds  other than
Partial Liquidation Proceeds.

            Holder:  See "Certificateholder."

            Independent:  When used with respect to any specified  Person,  such
Person who (i) is in fact independent of the Seller, the Master Servicer and any
Servicer,  (ii) does not have any  direct  financial  interest  or any  material
indirect financial interest in the Seller or the Master Servicer or any Servicer
or in an affiliate of either,  and (iii) is not connected  with the Seller,  the
Master Servicer or any Servicer as an officer, employee, promoter,  underwriter,
trustee, partner, director or person performing similar functions.

            Insurance  Policy:  Any insurance or performance  bond relating to a
Mortgage Loan or the Mortgage  Loans,  including any hazard  insurance,  special
hazard  insurance,  flood  insurance,  primary  mortgage  insurance,   mortgagor
bankruptcy bond or title insurance.

            Insurance  Proceeds:  Proceeds paid by any insurer pursuant to any
Insurance Policy covering a Mortgage Loan.

            Insured  Expenses:   Expenses  covered  by  any  Insurance  Policy
covering a Mortgage Loan.

            Interest Accrual Amount:  As to any Distribution  Date and any Class
of Class A Certificates  (other than the Class A-6 and Class A-PO Certificates),
(a) the  product of (i) 1/12th of the Class A  Pass-Through  Rate for such Class
and (ii) the  Principal  Balance  of such  Class  as of the  Determination  Date
preceding such  Distribution  Date minus (b) the Class A Interest  Percentage of
such Class of (i) any Non-Supported  Interest Shortfall allocated to the Class A
Certificates with respect to such  Distribution  Date, (ii) the interest portion
of any Excess Special Hazard Losses,  Excess Fraud Losses and Excess  Bankruptcy
Losses allocated to the Class A Certificates  with respect to such  Distribution
Date pursuant to Section 4.02(e) and (iii) the interest  portion of any Realized
Losses (other than Excess Special Hazard Losses,  Excess Fraud Losses and Excess
Bankruptcy  Losses)  allocated  to the  Class A  Certificates  on or  after  the
Cross-Over Date pursuant to Section 4.02(e). As to any Distribution Date and the
Class A-6  Certificates,  the Class A-6 Interest Accrual Amount.  The Class A-PO
Certificates have no Interest Accrual Amount.

            As to any  Distribution  Date and any Class of Class B Certificates,
an amount  equal to (i) the product of 1/12th of the Class B  Pass-Through  Rate
and the Principal Balance of such Class as of the  Determination  Date preceding
such Distribution Date minus (ii) the Class B Interest  Percentage of such Class
of  (x)  any  Non-Supported   Interest  Shortfall   allocated  to  the  Class  B
Certificates with respect to such Distribution Date and (y) the interest portion
of any Excess Special Hazard Losses,  Excess Fraud Losses and Excess  Bankruptcy
Losses allocated to the Class B Certificates  with respect to such  Distribution
Date pursuant to Section 4.02(e).

            LIBOR:  As to any  Distribution  Date,  the  arithmetic  mean of the
London Interbank offered rate quotations for one month Eurodollar  deposits,  as
determined by the Trustee on the related Rate  Determination  Date in accordance
with Section 4.07.

            LIBOR  Business  Day:  Any  Business Day on which banks are open for
dealing in foreign  currency  and exchange in London,  England,  the City of New
York and Charlotte, North Carolina.

            LIBOR   Certificates:   Any  of  the   Class A-5   and   Class A-6
Certificates.

            Liquidated  Loan: A Mortgage  Loan with respect to which the related
Mortgaged Property has been acquired,  liquidated or foreclosed and with respect
to which the applicable Servicer determines that all Liquidation  Proceeds which
it expects to recover have been recovered.

            Liquidated  Loan Loss:  With respect to any  Distribution  Date, the
aggregate  of the  amount of losses  with  respect to each  Mortgage  Loan which
became a Liquidated  Loan during the Applicable  Unscheduled  Principal  Receipt
Period with respect to Full Unscheduled Principal Receipts for such Distribution
Date,  equal to the  excess of (i) the  unpaid  principal  balance  of each such
Liquidated   Loan,  plus  accrued   interest  thereon  in  accordance  with  the
amortization  schedule  at the time  applicable  thereto at the  applicable  Net
Mortgage Interest Rate from the Due Date as to which interest was last paid with
respect  thereto  through the last day of the month preceding the month in which
such Distribution Date occurs,  over (ii) Net Liquidation  Proceeds with respect
to such Liquidated Loan.

            Liquidation Expenses:  Expenses incurred by a Servicer in connection
with the  liquidation  of any defaulted  Mortgage  Loan or property  acquired in
respect  thereof  (including,  without  limitation,  legal  fees  and  expenses,
committee  or referee  fees,  and,  if  applicable,  brokerage  commissions  and
conveyance taxes), any unreimbursed  advances expended by such Servicer pursuant
to its Servicing  Agreement or the Master  Servicer or Trustee  pursuant  hereto
respecting the related Mortgage Loan,  including any  unreimbursed  advances for
real property taxes or for property  restoration or  preservation of the related
Mortgaged  Property.  Liquidation  Expenses  shall not  include  any  previously
incurred  expenses  in respect of an REO  Mortgage  Loan which have been  netted
against related REO Proceeds.

            Liquidation  Proceeds:  Amounts  received  by a Servicer  (including
Insurance  Proceeds) in connection  with the  liquidation of defaulted  Mortgage
Loans or property acquired in respect thereof, whether through foreclosure, sale
or otherwise, including payments in connection with such Mortgage Loans received
from the  Mortgagor,  other than  amounts  required to be paid to the  Mortgagor
pursuant  to the terms of the  applicable  Mortgage  or to be applied  otherwise
pursuant to law.

            Loan-to-Value  Ratio:  The ratio,  expressed  as a  percentage,  the
numerator of which is the  principal  balance of a particular  Mortgage  Loan at
origination  and the  denominator  of which is the  lesser of (x) the  appraised
value of the related Mortgaged Property  determined in the appraisal used by the
originator  at the time of  origination  of such Mortgage  Loan,  and (y) if the
Mortgage is originated in connection with a sale of the Mortgaged Property,  the
sale price for such Mortgaged Property.

            Lower-Tier      Distribution     Amount:     As     defined     in
Section 4.01(a)(ii).

            Lower-Tier  REMIC:  One of two separate REMICs  comprising the Trust
Estate,  the assets of which  consist of the  Mortgage  Loans  (other than Fixed
Retained  Yield),  such  amounts  as  shall  from  time  to  time be held in the
Certificate  Account (other than Fixed Retained Yield), the insurance  policies,
if any,  relating to a Mortgage Loan and property  which secured a Mortgage Loan
and which has been acquired by foreclosure or deed in lieu of foreclosure.

            Master  Servicer:  Norwest Bank Minnesota,  National  Association,
or its successor in interest.

            Master  Servicing  Fee:  With respect to any  Mortgage  Loan and any
Distribution  Date, the fee payable monthly to the Master  Servicer  pursuant to
Section 6.05 equal to a fixed percentage  (expressed as a per annum rate) of the
unpaid principal balance of such Mortgage Loan.

            Master Servicing Fee Rate:  As set forth in Section 11.26.

            Mid-Month Receipt Period:  With respect to each  Distribution  Date,
the one month period beginning on the Determination Date (or, in the case of the
first Distribution  Date, from and including the Cut-Off-Date)  occurring in the
calendar month  preceding the month in which such  Distribution  Date occurs and
ending on the day preceding the  Determination  Date immediately  preceding such
Distribution Date.

            Month End Interest:  As defined in each Servicing Agreement.

            Moody's:  Moody's  Investors  Service,  Inc.,  or its successor in
interest.

            Monthly Payment: As to any Mortgage Loan (including any REO Mortgage
Loan) and any Due Date,  the payment of  principal  and  interest due thereon in
accordance with the amortization  schedule at the time applicable thereto (after
adjustment for any Curtailments and Deficient Valuations occurring prior to such
Due Date but before any adjustment to such amortization schedule, other than for
Deficient  Valuations,  by reason of any bankruptcy or similar proceeding or any
moratorium or similar waiver or grace period).

            Mortgage: The mortgage, deed of trust or other instrument creating a
first lien on Mortgaged  Property  securing a Mortgage  Note  together  with any
Mortgage Loan Rider, if applicable.

            Mortgage  Interest Rate: As to any Mortgage Loan, the per annum rate
at which interest accrues on the unpaid  principal  balance thereof as set forth
in the related  Mortgage  Note,  which rate is as indicated on the Mortgage Loan
Schedule.

            Mortgage  Loan  Purchase  Agreement:   The  mortgage  loan  purchase
agreement dated as of May 28, 1999 between Norwest Mortgage,  as seller, and the
Seller, as purchaser.

            Mortgage Loan Rider: The standard  FNMA/FHLMC riders to the Mortgage
Note  and/or  Mortgage  riders  required  when  the  Mortgaged   Property  is  a
condominium unit or a unit in a planned unit development.

            Mortgage Loan Schedule:  The list of the Mortgage Loans  transferred
to the  Trustee on the  Closing  Date as part of the Trust  Estate and  attached
hereto as Exhibits  F-1, F-2 and F-3,  which list may be amended  following  the
Closing Date upon  conveyance of a Substitute  Mortgage Loan pursuant to Section
2.02 or 2.03  and  which  list  shall  set  forth  at a  minimum  the  following
information  of the close of business on the Cut-Off  Date (or,  with respect to
Substitute  Mortgage  Loans,  as  of  the  close  of  business  on  the  day  of
substitution) as to each Mortgage Loan:

      (i)    the Mortgage Loan identifying number;

      (ii)   the city, state and zip code of the Mortgaged Property;

      (iii)  the type of property;

      (iv)   the Mortgage Interest Rate;

      (v)    the Net Mortgage Interest Rate;

      (vi)   the Monthly Payment;

      (vii)  the original number of months to maturity;

      (viii) the scheduled maturity date;

      (ix)   the Cut-Off Date Principal Balance;

      (x)    the Loan-to-Value Ratio at origination;

      (xi)   whether such Mortgage Loan is a Subsidy Loan;

      (xii)  whether such Mortgage Loan is covered by primary mortgage
insurance;

      (xiii) the Servicing Fee Rate;

      (xiv)  the Master Servicing Fee;

      (xv)   Fixed Retained Yield, if applicable; and

      (xvi)  for each Exhibit F-3 Mortgage  Loan, the name of the Servicer  with
      respect thereto.

            Such schedule may consist of multiple reports that  collectively set
forth all of the information required.

            Mortgage Loans:  Each of the mortgage loans transferred and assigned
to the Trustee on the Closing  Date  pursuant to Section  2.01 and any  mortgage
loans  substituted  therefor  pursuant to Section 2.02 or 2.03,  in each case as
from time to time are included in the Trust Estate as identified in the Mortgage
Loan Schedule.

            Mortgage  Note:  The  note  or  other  evidence  of   indebtedness
evidencing  the  indebtedness  of a Mortgagor  under a Mortgage  Loan together
with any related Mortgage Loan Riders, if applicable.

            Mortgaged  Property:  The  property  subject to a Mortgage,  which
may include Co-op Shares or residential long-term leases.

            Mortgagor:  The obligor on a Mortgage Note.

            Net Foreclosure Profits: As to any Distribution Date, the amount, if
any,  by  which  (i)  Aggregate   Foreclosure   Profits  with  respect  to  such
Distribution  Date exceed  (ii)  Liquidated  Loan  Losses  with  respect to such
Distribution Date.

            Net  Liquidation  Proceeds:  As to any  defaulted  Mortgage  Loan,
Liquidation Proceeds net of Liquidation Expenses.

            Net Mortgage  Interest  Rate:  With respect to each Mortgage Loan, a
rate equal to (i) the Mortgage  Interest  Rate on such  Mortgage Loan minus (ii)
the sum of (a) the  Servicing  Fee Rate,  as set  forth in  Section  11.25  with
respect to such Mortgage Loan,  (b) the Master  Servicing Fee Rate, as set forth
in Section 11.26 with respect to such  Mortgage Loan and (c) the Fixed  Retained
Yield Rate,  if any,  with respect to such Mortgage  Loan.  Any regular  monthly
computation of interest at such rate shall be based upon annual interest at such
rate on the applicable amount divided by twelve.

            Net REO Proceeds:  As to any REO Mortgage  Loan,  REO Proceeds net
of any related expenses of the Servicer.

            Non-permitted Foreign Holder:  As defined in Section 5.02(d).

            Non-PO  Fraction:  With respect to any Mortgage  Loan, the lesser of
(i) 1.00 and (ii) the quotient  obtained by dividing  the Net Mortgage  Interest
Rate for such Mortgage Loan by 6.500%.

            Nonrecoverable Advance: Any portion of a Periodic Advance previously
made or  proposed  to be made in respect  of a Mortgage  Loan which has not been
previously  reimbursed to the Servicer,  the Master Servicer or the Trustee,  as
the case may be, and which the  Servicer,  the Master  Servicer  or the  Trustee
determines will not, or in the case of a proposed Periodic Advance would not, be
ultimately  recoverable from Liquidation Proceeds or other recoveries in respect
of the related  Mortgage Loan.  The  determination  by the Servicer,  the Master
Servicer or the Trustee  (i) that it has made a  Nonrecoverable  Advance or (ii)
that any proposed Periodic  Advance,  if made, would constitute a Nonrecoverable
Advance,  shall  be  evidenced  by an  Officer's  Certificate  of  the  Servicer
delivered to the Master  Servicer for  redelivery to the Trustee or, in the case
of a Master  Servicer  determination,  an  Officer's  Certificate  of the Master
Servicer or  delivered to the Trustee,  in each case  detailing  the reasons for
such determination.

            Non-Supported  Interest Shortfall:  With respect to any Distribution
Date, the excess, if any, of the aggregate  Prepayment Interest Shortfall on the
Mortgage  Loans over the  aggregate  Compensating  Interest with respect to such
Distribution  Date. With respect to each Distribution Date occurring on or after
the Cross-Over Date, the Non-Supported Interest Shortfall determined pursuant to
the preceding  sentence will be increased by the amount of any  Cross-Over  Date
Interest  Shortfall  for such  Distribution  Date.  Any  Non-Supported  Interest
Shortfall  will be  allocated to (a) the Class A  Certificates  according to the
percentage  obtained by dividing the Class A Non-PO Principal Balance by the sum
of the Class A Non-PO  Principal  Balance and the Class B Principal  Balance and
(b) the Class B Certificates  according to the  percentage  obtained by dividing
the Class B Principal Balance by the sum of the Class A Non-PO Principal Balance
and the Class B Principal Balance.

            Non-U.S. Person:  As defined in Section 4.01(g).

            Norwest  Mortgage:  Norwest  Mortgage,  Inc.,  or its successor in
interest.

            Norwest  Mortgage  Correspondents:  The  entities  listed  on  the
Mortgage Loan  Schedule,  from which Norwest  Mortgage  purchased the Mortgage
Loans.

            Norwest Servicing  Agreement:  The Servicing  Agreement  providing
for the servicing of the  Exhibit F-1  Mortgage Loans and Exhibit F-2 Mortgage
Loans initially by Norwest Mortgage.

            Officers'  Certificate:  With respect to any Person,  a  certificate
signed by the Chairman of the Board,  the President or a Vice President,  and by
the  Treasurer,  the Secretary or one of the  Assistant  Treasurers or Assistant
Secretaries  of  such  Person  (or,  in the  case  of a  Person  which  is not a
corporation, signed by the person or persons having like responsibilities),  and
delivered to the Trustee.

            Opinion of Counsel: A written opinion of counsel, who may be outside
or salaried counsel for the Seller,  a Servicer or the Master  Servicer,  or any
affiliate of the Seller,  a Servicer or the Master  Servicer,  acceptable to the
Trustee if such opinion is to be delivered  to the Trustee;  provided,  however,
that with respect to REMIC matters,  matters  relating to the  determination  of
Eligible Accounts or matters relating to transfers of Certificates, such counsel
shall be Independent.

            Optimal  Adjustment  Event:  With  respect  to any  Class of Class B
Certificates and any Distribution  Date, an Optimal  Adjustment Event will occur
with  respect to such Class if: (i) the  Principal  Balance of such Class on the
Determination  Date succeeding such Distribution Date would have been reduced to
zero  (regardless  of whether  such  Principal  Balance was reduced to zero as a
result of principal  distribution or the allocation of Realized Losses) and (ii)
(a) the Principal Balance of any Class of Class A Certificates  would be subject
to  further  reduction  as a  result  of the  third or  fifth  sentences  of the
definition of Principal Balance or (b) the Principal Balance of a Class of Class
B Certificates with a lower numerical  designation would be reduced with respect
to such  Distribution  Date as a result of the application of clause (ii) of the
definition of Class B-1 Principal Balance,  Class B-2 Principal  Balance,  Class
B-3 Principal Balance,  Class B-4 Principal Balance, Class B-5 Principal Balance
or Class B-6 Principal Balance.

            Original  Class A  Percentage:  The Class A  Percentage  as of the
Cut-Off Date, as set forth in Section 11.04.

            Original Class A Non-PO Principal  Balance:  The sum of the Original
Principal Balances of the Class A-1, Class A-2, Class A-3, Class A-4, Class A-5,
Class A-7, Class A-8, Class A-9, Class A-10, Class A-11, Class A-12, Class A-13,
Class  A-14,  Class A-R and Class  A-LR  Certificates,  as set forth in  Section
11.06.

            Original  Class  A-6  Notional  Amount:  The  Original  Class  A-6
Notional Amount, as set forth in Section 11.05(a).

            Original  Class B  Principal  Balance:  The  sum of  the  Original
Class B-1 Principal  Balance,  Original  Class B-2 Principal  Balance,  Original
Class B-3 Principal  Balance,  Original  Class B-4 Principal  Balance,  Original
Class B-5 Principal  Balance and Original  Class B-6 Principal  Balance,  as set
forth in Section 11.14.

            Original Class B-1 Fractional Interest: As to the first Distribution
Date,  the  percentage  obtained by dividing the sum of the  Original  Class B-2
Principal Balance,  the Original Class B-3 Principal Balance, the Original Class
B-4 Principal  Balance,  Original  Class B-5 Principal  Balance and the Original
Class B-6 Principal  Balance by the sum of the Original Class A Non-PO Principal
Balance and the  Original  Class B Principal  Balance.  The  Original  Class B-1
Fractional Interest is specified in Section 11.16.

            Original Class B-2 Fractional Interest: As to the first Distribution
Date,  the  percentage  obtained by dividing the sum of the  Original  Class B-3
Principal Balance, the Original Class B-4 Principal Balance,  Original Class B-5
Principal Balance and the Original Class B-6 Principal Balance by the sum of the
Original  Class A Non-PO  Principal  Balance and the Original  Class B Principal
Balance.  The  Original  Class B-2  Fractional  Interest is specified in Section
11.17.

            Original Class B-3 Fractional Interest: As to the first Distribution
Date,  the  percentage  obtained by dividing the sum of the  Original  Class B-4
Principal  Balance,  the Original  Class B-5 Principal  Balance and the Original
Class B-6 Principal  Balance by the sum of the Original Class A Non-PO Principal
Balance and the  Original  Class B Principal  Balance.  The  Original  Class B-3
Fractional Interest is specified in Section 11.18.

            Original   Class B-4   Fractional   Interest:   As  to  the  first
Distribution  Date,  the  percentage  obtained  by  dividing  the  sum  of the
Original  Class B-5  Principal  Balance and the Original  Class B-6  Principal
Balance by the sum of the Original  Class A Non-PO  Principal  Balance and the
Original  Class B  Principal  Balance.   The  Original  Class B-4   Fractional
Interest is specified in Section 11.19.

            Original Class B-5 Fractional Interest: As to the first Distribution
Date,  the  percentage  obtained by dividing  the Original  Class B-6  Principal
Balance by the sum of the  Original  Class A Non-PO  Principal  Balance  and the
Original Class B Principal Balance.  The Original Class B-5 Fractional  Interest
is specified in Section 11.20.

            Original  Class B-1  Percentage:  The  Class B-1  Percentage as of
the Cut-Off Date, as set forth in Section 11.08.

            Original  Class B-2  Percentage:  The  Class B-2  Percentage as of
the Cut-Off Date, as set forth in Section 11.09.

            Original  Class B-3  Percentage:  The  Class B-3  Percentage as of
the Cut-Off Date, as set forth in Section 11.10.

            Original  Class B-4  Percentage:  The  Class B-4  Percentage as of
the Cut-Off Date, as set forth in Section 11.11.

            Original  Class B-5  Percentage:  The  Class B-5  Percentage as of
the Cut-Off Date, as set forth in Section 11.12.

            Original  Class B-6  Percentage:  The  Class B-6  Percentage as of
the Cut-Off Date, as set forth in Section 11.13.

            Original  Class B-1  Principal  Balance:  The Class B-1  Principal
Balance as of the Cut-Off Date, as set forth in Section 11.15.

            Original  Class B-2  Principal  Balance:  The Class B-2  Principal
Balance as of the Cut-Off Date, as set forth in Section 11.15.

            Original  Class B-3  Principal  Balance:  The Class B-3  Principal
Balance as of the Cut-Off Date, as set forth in Section 11.15.

            Original  Class B-4  Principal  Balance:  The Class B-4  Principal
Balance as of the Cut-Off Date, as set forth in Section 11.15.

            Original  Class B-5  Principal  Balance:  The Class B-5  Principal
Balance as of the Cut-Off Date, as set forth in Section 11.15.

            Original  Class B-6  Principal  Balance:  The Class B-6  Principal
Balance as of the Cut-Off Date, as set forth in Section 11.15.

            Original Principal  Balance:  Any of the Original Principal Balances
of the  Classes  of Class A  Certificates  as set forth in  Section  11.05;  the
Original  Class B-1 Principal  Balance,  Original  Class B-2 Principal  Balance,
Original  Class B-3 Principal  Balance,  Original  Class B-4 Principal  Balance,
Original Class B-5 Principal  Balance or Original Class B-6 Principal Balance as
set forth in Section 11.15.

            Original Subordinated  Percentage:  The Subordinated Percentage as
of the Cut-Off Date, as set forth in Section 11.07.

            Other Servicer:  Any of the Servicers other than Norwest Mortgage.

            Other Servicing  Agreements:  The Servicing  Agreements other than
the Norwest Servicing Agreement.

            Outstanding  Mortgage  Loan:  As to any Due Date,  a  Mortgage  Loan
(including an REO Mortgage Loan) which was not the subject of a Full Unscheduled
Principal  Receipt prior to such Due Date and which was not  repurchased  by the
Seller prior to such Due Date pursuant to Section 2.02 or 2.03.

            Owner  Mortgage Loan File: A file  maintained by the Trustee (or the
Custodian,  if any) for each Mortgage Loan that contains the documents specified
in the  Servicing  Agreements  or, in the case of each Mortgage Loan serviced by
Bank  United,  the  documents  specified in the Bank United  Mortgage  Loan Sale
Agreement  under their  respective  "Owner  Mortgage  Loan File"  definition  or
similar  definition  and/or  other  provisions  requiring  delivery of specified
documents  to the owner of the  Mortgage  Loan in  connection  with the purchase
thereof, and any additional documents required to be added to the Owner Mortgage
Loan File pursuant to this Agreement.

            PAC  Certificates:  The Class A-1,  Class A-2, Class A-3, Class A-4,
Class A-5 and Class A-11 Certificates.

            PAC Principal Amount:  As defined in Section 4.01(b).

            Partial Liquidation  Proceeds:  Liquidation Proceeds received by a
Servicer  prior to the  month in which  the  related  Mortgage  Loan  became a
Liquidated Loan.

            Partial Unscheduled  Principal Receipt:  An Unscheduled  Principal
Receipt which is not a Full Unscheduled Principal Receipt.

            Paying Agent:  The Person  authorized  on behalf of the Trustee,  as
agent for the Master Servicer, to make distributions to Certificateholders  with
respect to the  Certificates and to forward to  Certificateholders  the periodic
and annual  statements  required by Section  4.04.  The Paying  Agent may be any
Person  directly or  indirectly  controlling  or  controlled  by or under common
control  with the Master  Servicer and may be the  Trustee.  The initial  Paying
Agent is appointed in Section 4.03(a).

            Payment   Account:    The   account    maintained    pursuant   to
Section 4.03(b).

            Percentage  Interest:  With respect to a Class A Certificate  (other
than Class A-6  Certificates),  the undivided  percentage  interest  obtained by
dividing  the original  principal  balance of such  Certificate  by the Original
Principal Balance of such Class of Class A Certificates. With respect to a Class
A-6  Certificate,  the undivided  percentage  interest  obtained by dividing the
original notional amount evidenced by such Certificate by the Original Class A-6
Notional Amount of such Class. With respect to a Class B Certificate of a Class,
the undivided  percentage  interest obtained by dividing the original  principal
balance of such Certificate by the Original  Principal  Balance of such Class of
Class B Certificates.

            Periodic Advance:  The aggregate of the advances required to be made
by a Servicer on any Distribution Date pursuant to its Servicing Agreement or by
the Master  Servicer or the Trustee  hereunder,  the amount of any such advances
being equal to the total of all Monthly Payments (adjusted,  in each case (i) in
respect  of  interest,  to  the  applicable  Mortgage  Interest  Rate  less  the
applicable Servicing Fee in the case of Periodic Advances made by a Servicer and
to the  applicable Net Mortgage  Interest Rate in the case of Periodic  Advances
made by the Master  Servicer  or Trustee  and (ii) by the amount of any  related
Debt Service Reductions or reductions in the amount of interest collectable from
the Mortgagor  pursuant to the Soldiers' and Sailors'  Civil Relief Act of 1940,
as  amended,  or  similar  legislation  or  regulations  then in  effect) on the
Mortgage  Loans,  that (x) were  delinquent  as of the close of  business on the
related  Determination  Date,  (y) were not the  subject of a previous  Periodic
Advance by such Servicer or of a Periodic  Advance by the Master Servicer or the
Trustee,  as the case may be and (z) have  not  been  determined  by the  Master
Servicer, such Servicer or Trustee to be Nonrecoverable Advances.

            Person:  Any individual,  corporation,  partnership,  joint venture,
association,   joint-stock  company,  trust,   unincorporated   organization  or
government or any agency or political subdivision thereof.

            Plan:  As defined in Section 5.02(c).

            PO  Fraction:  With  respect  to any  Discount  Mortgage  Loan,  the
difference  between 1.0 and the Non-PO  Fraction for such  Mortgage  Loan;  with
respect to any other Mortgage Loan, zero.

            Pool Balance (Non-PO Portion):  As of any Distribution Date, the sum
of the amounts for each  Mortgage Loan that is an  Outstanding  Mortgage Loan of
the  product  of (i) the Non-PO  Fraction  for such  Mortgage  Loan and (ii) the
Scheduled Principal Balance of such Mortgage Loan.

            Pool Balance (PO Portion):  As of any Distribution  Date, the sum of
the amounts for each Mortgage Loan that is an  Outstanding  Mortgage Loan of the
product of (i) the PO Fraction  for such  Mortgage  Loan and (ii) the  Scheduled
Principal Balance of such Mortgage Loan.

            Pool  Distribution  Amount:  As of any Distribution  Date, the funds
eligible  for   distribution  to  the  Holders  of  the   Certificates  on  such
Distribution  Date,  which shall be the sum of (i) all previously  undistributed
payments or other receipts on account of principal and interest on or in respect
of the  Mortgage  Loans  (including,  without  limitation,  the  proceeds of any
repurchase  of a  Mortgage  Loan by the Seller  and any  Substitution  Principal
Amount)  received  by  the  Master  Servicer  with  respect  to  the  applicable
Remittance  Date in the  month of such  Distribution  Date  and any  Unscheduled
Principal  Receipts  received by the Master Servicer on or prior to the Business
Day  preceding  such  Distribution  Date,  (ii) all Periodic  Advances made by a
Servicer pursuant to the related  Servicing  Agreement or Periodic Advances made
by the Master  Servicer  or the Trustee  pursuant to Section  3.03 and (iii) all
other amounts  required to be placed in the Certificate  Account by the Servicer
on or before the  applicable  Remittance  Date or by the Master  Servicer or the
Trustee on or prior to the Distribution Date, but excluding the following:

            (a) amounts received as late payments of principal or interest and
respecting  which  the  Master  Servicer  or the  Trustee  has  made one or more
unreimbursed Periodic Advances;

            (b) the portion of  Liquidation  Proceeds  used to reimburse any
unreimbursed Periodic Advances by the Master Servicer or the Trustee;

            (c) those  portions of each  payment of  interest on a  particular
Mortgage Loan which  represent (i) the Fixed  Retained  Yield,  if any, (ii) the
Servicing Fee and (iii) the Master Servicing Fee;

            (d) all amounts  representing  scheduled payments of principal and
interest  due  after  the  Due  Date  occurring  in  the  month  in  which  such
Distribution Date occurs;

            (e) all  Unscheduled  Principal Receipts received by the Servicers
after the  Applicable  Unscheduled  Principal  Receipt  Period  relating  to the
Distribution Date for the applicable type of Unscheduled  Principal Receipt, and
all related payments of interest on such amounts;

            (f) all   repurchase  proceeds  with  respect  to  Mortgage  Loans
repurchased  by the Seller  pursuant to Section 2.02 or 2.03 on or following the
Due Date in the month in which such  Distribution Date occurs and the difference
between the unpaid  principal  balance of such Mortgage Loan  substituted  for a
defective  Mortgage  Loan  during  the month  preceding  the month in which such
Distribution  Date  occurs and the unpaid  principal  balance of such  defective
Mortgage Loan;

            (g) that  portion of  Liquidation  Proceeds and REO Proceeds which
represents any unpaid Servicing Fee or Master Servicing Fee;

            (h) all income  from  Eligible  Investments  that is held in the
Certificate Account for the account of the Master Servicer;

            (i) all   other  amounts   permitted  to  be  withdrawn  from  the
Certificate  Account in respect of the Mortgage Loans, to the extent not covered
by clauses  (a)  through  (h) above,  or not  required  to be  deposited  in the
Certificate Account under this Agreement;

            (j) Net Foreclosure Profits;

            (k) Month End Interest; and

            (l) the amount of any Recoveries in respect of principal which had
previously  been  allocated  as a loss to one or more  Classes of the Class A or
Class B Certificates  pursuant to Section 4.02 other than Recoveries  covered by
the last sentence of Section 4.02(d).

            Pool Scheduled  Principal Balance:  As to any Distribution Date, the
aggregate   Scheduled  Principal  Balances  of  all  Mortgage  Loans  that  were
Outstanding  Mortgage Loans on the Due Date in the month  preceding the month of
such Distribution Date.

            Prepayment In Full:  With respect to any Mortgage  Loan, a Mortgagor
payment  consisting of a Principal  Prepayment in the amount of the  outstanding
principal  balance of such loan and resulting in the full  satisfaction  of such
obligation.

            Prepayment Interest Shortfall:  On any Distribution Date, the amount
of interest,  if any, that would have accrued on any Mortgage Loan which was the
subject  of a  Prepayment  in Full at the Net  Mortgage  Interest  Rate for such
Mortgage  Loan  from the date of its  Prepayment  in Full  (but in the case of a
Prepayment in Full where the Applicable  Unscheduled Principal Receipt Period is
the Mid-Month  Receipt Period,  only if the date of the Prepayment in Full is on
or  after  the  Determination  Date in the  month  prior  to the  month  of such
Distribution  Date and prior to the first day of the month of such  Distribution
Date) through the last day of the month prior to the month of such  Distribution
Date.

            Principal  Accretion  Amount:  With  respect to any Class of Accrual
Certificates and as to any Distribution  Date prior to the applicable  Accretion
Termination  Date,  an amount with respect to such Class equal to the sum of the
amounts calculated pursuant to clauses (i) and (ii) of the definition of Accrual
Distribution Amount with respect to such Distribution Date.

            Principal  Adjustment:  In the  event  that the  Class  B-1  Optimal
Principal  Amount,  Class  B-2  Optimal  Principal  Amount,  Class  B-3  Optimal
Principal  Amount,  Class  B-4  Optimal  Principal  Amount,  Class  B-5  Optimal
Principal  Amount  or Class  B-6  Optimal  Principal  Amount  is  calculated  in
accordance with the proviso in such definition with respect to any  Distribution
Date,  the Principal  Adjustment  for such Class of Class B  Certificates  shall
equal the difference  between (i) the amount that would have been distributed to
such  Class  as  principal  in  accordance  with  Section  4.01(a)(i)  for  such
Distribution Date,  calculated without regard to such proviso and assuming there
are no Principal  Adjustments for such  Distribution  Date and (ii) the Adjusted
Principal Balance for such Class.

            Principal Balance:  As of the first Determination Date and as to any
Class of Class A  Certificates  (other  than the  Class A-6  Certificates),  the
Original  Principal  Balance of such Class.  As of any subsequent  Determination
Date prior to the  Cross-Over  Date and as to any Class of Class A  Certificates
(other than the Class A-6 and Class A-PO  Certificates),  the Original Principal
Balance of such Class (increased in the case of a Class of Accrual  Certificates
by the Principal  Accretion Amounts with respect to prior Distribution Dates for
such Class of Accrual  Certificates)  less the sum of (a) all amounts previously
distributed in respect of such Class on prior Distribution Dates (i) pursuant to
Paragraph third clause (A) of Section  4.01(a),  (ii) as a result of a Principal
Adjustment and (iii), if applicable,  from the Accrual  Distribution Amounts for
such prior Distribution Dates and (b) the Realized Losses allocated through such
Determination  Date to  such  Class  pursuant  to  Section  4.02(b).  After  the
Cross-Over  Date,  each such  Principal  Balance  will also be  reduced (a "Loss
Reduction") on each  Determination Date by an amount equal to the product of the
Class A Loss Percentage of such Class and the excess, if any, of (i) the Class A
Non-PO Principal  Balance as of such  Determination  Date without regard to this
sentence over (ii) the  difference  between (A) the Adjusted Pool Amount for the
preceding  Distribution  Date and (B) the Adjusted  Pool Amount (PO Portion) for
the preceding Distribution Date; provided,  however, that the amount of any such
Loss  Reduction for the Class A-13  Certificates  will be decreased by the Class
A-14 Loss Allocation  Amount.  After the Cross-Over Date, the Principal  Balance
for the Class A-14  Certificates  will additionally be reduced by the Class A-14
Loss Allocation Amount.

            The Class A-6 Certificates are  interest-only  Certificates and have
no Principal Balance.

            As of any subsequent Determination Date prior to the Cross-Over Date
and as to the Class A-PO  Certificates,  the Original  Principal Balance of such
Class less the sum of (a) all amounts  previously  distributed in respect of the
Class A-PO Certificates on prior Distribution Dates pursuant to Paragraphs third
clause  (B) and  fourth  of  Section  4.01(a)(i)  and (b)  the  Realized  Losses
allocated  through  such  Determination  Date  to the  Class  A-PO  Certificates
pursuant to Section 4.02(b).  After the Cross-Over Date, such Principal  Balance
will  also be  reduced  on each  Determination  Date by an  amount  equal to the
difference, if any, between such Principal Balance as of such Determination Date
without  regard to this  sentence and the Adjusted  Pool Amount (PO Portion) for
the preceding Distribution Date.

            As to the Class B  Certificates,  the Class B-1  Principal  Balance,
Class B-2 Principal Balance,  Class B-3 Principal  Balance,  Class B-4 Principal
Balance,   Class  B-5  Principal  Balance  and  Class  B-6  Principal   Balance,
respectively.

            Principal Prepayment: Any Mortgagor payment on a Mortgage Loan which
is  received  in  advance  of its Due Date and is not  accompanied  by an amount
representing  scheduled  interest  for  any  period  subsequent  to the  date of
prepayment.

            Prior Month Receipt Period:  With respect to each Distribution Date,
the calendar month preceding the month in which such Distribution Date occurs.

            Prohibited  Transaction  Tax: Any tax imposed  under  Section 860F
of the Code.

            Prudent  Servicing  Practices:  The  standard of care set forth in
each Servicing Agreement.

            Rate  Determination  Date: As to any Distribution Date and any Class
of LIBOR  Certificates,  the second LIBOR Business Day preceding the 25th day of
the month preceding the month in which such Distribution Date occurs.

            Rating Agency: Any nationally  recognized  statistical credit rating
agency, or its successor,  that rated one or more Classes of the Certificates at
the  request  of  the  Seller  at  the  time  of  the  initial  issuance  of the
Certificates.  The  Rating  Agencies  for the Class A  Certificates  are DCR and
Moody's.  The Rating Agency for the Class B-1,  Class B-2,  Class B-3, Class B-4
and Class B-5  Certificates  is DCR.  If any such  agency or a  successor  is no
longer in existence,  "Rating  Agency" shall be such  statistical  credit rating
agency, or other comparable  Person,  designated by the Seller,  notice of which
designation  shall be given to the Trustee and the Master  Servicer.  References
herein to the highest  short-term  rating category of a Rating Agency shall mean
D-1+ in the  case of DCR,  P-1+ in the  case of  Moody's  and in the case of any
other Rating Agency shall mean its equivalent of such ratings. References herein
to the highest  long-term  rating  categories of a Rating Agency shall mean AAA,
and in the case of any other  Rating  Agency shall mean its  equivalent  of such
rating without any plus or minus.

            Realized  Losses:   With  respect  to  any  Distribution  Date,  (i)
Liquidated  Loan Losses  (including  Special Hazard Losses and Fraud Losses) and
(ii)  Bankruptcy  Losses  incurred  in the  month  preceding  the  month of such
Distribution Date.

            Record  Date:  The last  Business Day of the month  preceding  the
month of the related Distribution Date.

            Recovery:  Any amount  received on a Mortgage  Loan  subsequent to
such Mortgage Loan being determined to be a Liquidated Loan.

            Reduction Amount:  As defined in Section 4.01(b).

            Reference  Banks:  Initially,  the Reference Banks shall be Deutsche
Bank  International,  Bank of America,  FSB, Citibank,  N.A., and The Fuji Bank,
Limited. If any of these banks are not available,  the Trustee shall select from
one of the following  banks a substitute  Reference  Bank:  Marine Midland Bank,
Westdeutsche  Landesbank  Girozentrale,  The Chase  Manhattan  Bank or  National
Westminster Bank Plc. If any of these banks are not available, the Trustee shall
in its discretion select another Reference Bank.

            Relevant Anniversary:  See "Bankruptcy Loss Amount."

            REMIC: A "real estate mortgage  investment  conduit" as defined in
Code Section 860D.

            REMIC Provisions:  Provisions of the federal income tax law relating
to REMICs, which appear at Sections 860A through 860G of Part IV of Subchapter M
of  Chapter  1 of  Subtitle  A of the Code,  and  related  provisions,  and U.S.
Department of the Treasury temporary,  proposed or final regulations promulgated
thereunder,  as the  foregoing  are in  effect  (or  with  respect  to  proposed
regulations, are proposed to be in effect) from time to time.

            Remittance Date:  As defined in each of the Servicing Agreements.

            REO Mortgage Loan: Any Mortgage Loan which is not a Liquidated  Loan
and as to which the  indebtedness  evidenced  by the  related  Mortgage  Note is
discharged  and the  related  Mortgaged  Property  is held as part of the  Trust
Estate.

            REO Proceeds:  Proceeds received in respect of any REO Mortgage Loan
(including,  without  limitation,  proceeds  from  the  rental  of  the  related
Mortgaged Property).

            Request for Release:  A request for release in  substantially  the
form attached as Exhibit G hereto.

            Responsible  Officer:  When used with  respect to the  Trustee,  the
Chairman or Vice-Chairman of the Board of Directors or Trustees, the Chairman or
Vice-Chairman  of the Executive or Standing  Committee of the Board of Directors
or Trustees, the President,  the Chairman of the Committee on Trust Matters, any
Vice  President,  the Secretary,  any Assistant  Secretary,  the Treasurer,  any
Assistant  Treasurer,  the Cashier,  any Assistant Cashier, any Trust Officer or
Assistant  Trust Officer,  the  Controller  and any Assistant  Controller or any
other officer of the Trustee customarily  performing  functions similar to those
performed by any of the  above-designated  officers and also,  with respect to a
particular  matter, any other officer to whom such matter is referred because of
such officer's knowledge of and familiarity with the particular subject.

            Rule 144A: Rule 144A  promulgated  under the Securities Act of 1933,
as amended.

            Scheduled Certificates:  The Class A-7,  Class A-8,  Class A-9 and
Class A-10 Certificates.

            Scheduled   Principal   Balance:   As  to  any  Mortgage   Loan  and
Distribution  Date,  the  principal  balance of such Mortgage Loan as of the Due
Date in the month preceding the month of such  Distribution Date as specified in
the amortization schedule at the time relating thereto (before any adjustment to
such  amortization  schedule by reason of any  bankruptcy  (other than Deficient
Valuations)  or similar  proceeding or any moratorium or similar waiver or grace
period) after giving effect to (A) Unscheduled  Principal  Receipts  received or
applied by the  applicable  Servicer  during the related  Unscheduled  Principal
Receipt Period for each applicable type of Unscheduled Principal Receipt related
to the  Distribution  Date occurring in the month  preceding  such  Distribution
Date,  (B)  Deficient  Valuations  incurred  prior  to such Due Date and (C) the
payment of principal due on such Due Date and irrespective of any delinquency in
payment by the related Mortgagor.  Accordingly,  the Scheduled Principal Balance
of a Mortgage Loan which becomes a Liquidated  Loan at any time through the last
day of such related Unscheduled Principal Receipt Period shall be zero.

            Seller:  Norwest Asset  Securities  Corporation,  or its successor
in interest.

            Senior Optimal Amount: As to any Distribution Date, the sum for such
Distribution  Date of (a) the Class A Non-PO  Optimal  Amount  and (b) the Class
A-PO Optimal Principal Amount.

            Servicer  Mortgage  Loan File: As defined in each of the Servicing
Agreements.

            Servicers:  Each of Norwest Mortgage,  SunTrust Mortgage, Inc., Bank
United,  BankNorth  Mortgage  Company,  National  City  Mortgage  Company,  GMAC
Mortgage  Corporation,  Countrywide Home Loans, Inc., America First Credit Union
and Charter  Bank for  Savings,  FSB as a Servicer  under the related  Servicing
Agreement.

            Servicing Agreements: Each of the Servicing Agreements executed with
respect  to a  portion  of the  Mortgage  Loans by one of the  Servicers,  which
agreements are attached hereto, collectively, as Exhibit L.

            Servicing  Fee:  With respect to any  Servicer,  as defined in its
Servicing Agreement.

            Servicing  Fee Rate:  With  respect  to a  Mortgage  Loan,  as set
forth in Section 11.25.

            Servicing  Officer:  Any  officer  of a Servicer  involved  in, or
responsible for, the administration and servicing of the Mortgage Loans.

            Similar Law:  As defined in Section 5.02(c).

            Single  Certificate:  A Certificate  of any  Class that  evidences
the  smallest  permissible  Denomination  for  such  Class,  as set  forth  in
Section 11.24.

            Special  Hazard  Loss:  (i) A  Liquidated  Loan Loss  suffered  by a
Mortgaged Property on account of direct physical loss, exclusive of (a) any loss
covered by a hazard policy or a flood insurance policy  maintained in respect of
such  Mortgaged  Property  pursuant  to a Servicing  Agreement  and (b) any loss
caused by or resulting from:

            (1)   normal wear and tear;

            (2)   infidelity,  conversion or other  dishonest act on the part of
                  the  Trustee,  or  the  Servicer  or any of  their  agents  or
                  employees; or

            (3)   errors in  design,  faulty  workmanship  or faulty  materials,
                  unless the collapse of the property or a part thereof ensues;

or (ii) any  Liquidated  Loan Loss suffered by the Trust Estate  arising from or
related to the presence or suspected  presence of hazardous  wastes or hazardous
substances on a Mortgaged  Property unless such loss to a Mortgaged  Property is
covered by a hazard policy or a flood insurance policy  maintained in respect of
such Mortgaged Property pursuant to the Servicing Agreement.

            Special Hazard Loss Amount:  As of any Distribution  Date, an amount
equal to  $4,728,124.94  minus the sum of (i) the  aggregate  amount of  Special
Hazard Losses  allocated  solely to the Class B Certificates  in accordance with
Section 4.02(a) and (ii) the Special Hazard Adjustment Amount (as defined below)
as most recently  calculated.  For each  anniversary  of the Cut-Off  Date,  the
Special Hazard  Adjustment  Amount shall be calculated and shall be equal to the
amount,  if any, by which the amount calculated in accordance with the preceding
sentence  (without  giving  effect  to  the  deduction  of  the  Special  Hazard
Adjustment Amount for such  anniversary)  exceeds the greater of (A) the product
of  the  Special  Hazard  Percentage  for  such  anniversary  multiplied  by the
outstanding principal balance of all the Mortgage Loans on the Distribution Date
immediately  preceding such  anniversary,  (B) twice the  outstanding  principal
balance  of the  Mortgage  Loan  in the  Trust  Estate  which  has  the  largest
outstanding  principal  balance on the Distribution  Date immediately  preceding
such  anniversary  and (C) that which is  necessary  to  maintain  the  original
ratings on the  Certificates as evidenced by letters to that effect delivered by
Rating  Agencies  to the  Master  Servicer  and the  Trustee.  On and  after the
Cross-Over Date, the Special Hazard Loss Amount shall be zero.

            Special  Hazard  Percentage:  As of each  anniversary of the Cut-Off
Date,  the  greater of (i) 1.00% and (ii) the  largest  percentage  obtained  by
dividing the  aggregate  outstanding  principal  balance (as of the  immediately
preceding  Distribution  Date)  of  the  Mortgage  Loans  secured  by  Mortgaged
Properties  located  in a  single,  five-digit  zip  code  area in the  State of
California by the outstanding  principal balance of all the Mortgage Loans as of
the immediately preceding Distribution Date.

            Startup Day:  As defined in Section 2.05.

            Subordinated   Percentage:   As  to  any  Distribution  Date,  the
percentage  which is the  difference  between 100% and the Class A  Percentage
for such date.

            Subordinated  Prepayment Percentage:  As to any Distribution Date,
the  percentage  which  is  the  difference   between  100%  and  the  Class A
Prepayment Percentage for such date.

            Subsidy  Loan:  Any Mortgage  Loan  subject to a temporary  interest
subsidy  agreement  pursuant to which the monthly interest  payments made by the
related  Mortgagor will be less than the scheduled  monthly interest payments on
such Mortgage  Loan,  with the resulting  difference in interest  payments being
provided by the employer of the Mortgagor.  Each Subsidy Loan will be identified
as such in the Mortgage Loan Schedule.

            Substitute Mortgage Loan:  As defined in Section 2.02.

            Substitution  Principal  Amount:  With respect to any Mortgage  Loan
substituted  in accordance  with Section 2.02 or pursuant to Section  2.03,  the
excess  of (x) the  unpaid  principal  balance  of the  Mortgage  Loan  which is
substituted for over (y) the unpaid principal balance of the Substitute Mortgage
Loan, each balance being determined as of the date of substitution.

            Trustee:  First Union National Bank, a national banking  association
with its principal office located in Charlotte, North Carolina, or any successor
Trustee appointed as herein provided.

            Trust  Estate:  The corpus of the trust  created by this  Agreement,
consisting of the Mortgage  Loans (other than any Fixed  Retained  Yield),  such
amounts as may be held from time to time in the Certificate  Account (other than
any Fixed Retained Yield), the rights of the Trustee, to receive the proceeds of
all insurance  policies and performance bonds, if any, required to be maintained
hereunder or under the related Servicing  Agreement and property which secured a
Mortgage  Loan and which has been  acquired  by  foreclosure  or deed in lieu of
foreclosure.

            Uncertificated  Lower-Tier Interest: Any of the Class A-L1 Interest,
the Class A-L5 Interest,  the Class A-L7 Interest,  the Class A-L8 Interest, the
Class A-L12 Interest,  the Class A-L14 Interest,  the Class A-LPO Interest,  the
Class A-LUR  Interest,  the Class B-LI Interest,  the Class B-L2  Interest,  the
Class B-L3 Interest,  the Class B-L4  Interest,  the Class B-L5 Interest and the
Class B-L6 Interest.

            Unpaid  Interest  Shortfalls:  Each of the Class A Unpaid Interest
Shortfalls,  the Class B-1  Unpaid Interest  Shortfall,  the Class B-2  Unpaid
Interest  Shortfall,  the Class B-3 Unpaid Interest  Shortfall,  the Class B-4
Unpaid Interest  Shortfall,  the Class B-5  Unpaid Interest  Shortfall and the
Class B-6 Unpaid Interest Shortfall.

            Unscheduled  Principal  Receipt:  Any Principal  Prepayment or other
recovery  of  principal  on a  Mortgage  Loan,  including,  without  limitation,
Liquidation   Proceeds,   Net  REO  Proceeds  and  proceeds  received  from  any
condemnation  award or proceeds in lieu of condemnation  other than that portion
of such proceeds  released to the Mortgagor in accordance  with the terms of the
Mortgage or Prudent  Servicing  Practices,  but  excluding  any Net  Foreclosure
Profits and  proceeds of a repurchase  of a Mortgage  Loan by the Seller and any
Substitution  Principal  Amounts.  Except as set forth in the last  sentence  of
Section  4.02(d),  a Recovery shall not be treated as an  Unscheduled  Principal
Receipt.

            Unscheduled  Principal Receipt Period:  Either a Mid-Month Receipt
Period or a Prior Month Receipt Period.

            Upper-Tier  Certificate:  Any  one  of  the  Class A  Certificates
(other than the Class A-LR Certificate) and the Class B Certificates.

            Upper-Tier  Certificate  Account:  The trust  account  established
and maintained pursuant to Section 4.01(e).

            Upper-Tier  REMIC:  One of the two separate  REMICs  comprising  the
Trust  Estate,  the  assets of which  consist of the  Uncertificated  Lower-Tier
Interests and such amounts as shall from time to time be held in the  Upper-Tier
Certificate Account.

            U.S. Person:  As defined in Section 4.01(g).

            Voting Interest: With respect to any provisions hereof providing for
the action,  consent or approval of the Holders of all  Certificates  evidencing
specified Voting Interests in the Trust Estate,  the Class A-6 Certificates will
be  entitled  to  1%  of  the  aggregate  Voting  Interest  represented  by  all
Certificates and each remaining Class of Certificates  will be entitled to a pro
rata portion of the remaining  Voting  Interest  equal to the ratio  obtained by
dividing the  Principal  Balance Each  Certificateholder  of a Class will have a
Voting  Interest equal to the product of the Voting Interest to which such Class
is collectively  entitled and the Percentage  Interest in such Class represented
by such Holder's  Certificates.  With respect to any provisions hereof providing
for  action,  consent or  approval of each Class of  Certificates  or  specified
Classes of Certificates,  each  Certificateholder  of a Class will have a Voting
Interest in such Class equal to such Holder's Percentage Interest in such Class.

            Weighted Average Net Mortgage  Interest Rate: As to any Distribution
Date,  a rate per annum equal to the average,  expressed as a percentage  of the
Net Mortgage Interest Rates of all Mortgage Loans that were Outstanding Mortgage
Loans as of the Due Date in the month  preceding the month of such  Distribution
Date,  weighted on the basis of the respective  Scheduled  Principal Balances of
such Mortgage Loans.

            SECTION 1.02      ACTS OF HOLDERS.

            (a) Any  request,  demand,   authorization,   direction,   notice,
consent,  waiver or other action provided by this Agreement to be given or taken
by Holders  may be  embodied  in and  evidenced  by one or more  instruments  of
substantially similar tenor signed by such Holders in person or by an agent duly
appointed in writing. Except as herein otherwise expressly provided, such action
shall become  effective when such instrument or instruments are delivered to the
Trustee.  Proof of execution of any such  instrument or of a writing  appointing
any such  agent  shall be  sufficient  for any  purpose  of this  Agreement  and
conclusive  in favor of the  Trustee,  if made in the  manner  provided  in this
Section 1.02. The Trustee shall promptly  notify the Master  Servicer in writing
of the receipt of any such instrument or writing.

            (b) The  fact and date of the  execution by any Person of any such
instrument  or  writing  may be proved  by the  affidavit  of a witness  of such
execution or by a certificate of a notary public or other officer  authorized by
law to take  acknowledgments  of deeds,  certifying that the individual  signing
such instrument or writing acknowledged to him the execution thereof.  When such
execution is by a signer acting in a capacity  other than his or her  individual
capacity,  such certificate or affidavit shall also constitute  sufficient proof
of his or her  authority.  The  fact  and  date  of the  execution  of any  such
instrument or writing,  or the authority of the  individual  executing the same,
may also be proved in any other manner which the Trustee deems sufficient.

            (c) The   ownership   of   Certificates   (whether   or  not  such
Certificates shall be overdue and  notwithstanding  any notation of ownership or
other   writing   thereon  made  by  anyone  other  than  the  Trustee  and  the
Authenticating Agent) shall be proved by the Certificate  Register,  and neither
the Trustee,  the Seller nor the Master Servicer shall be affected by any notice
to the contrary.

            (d) Any  request,  demand,   authorization,   direction,   notice,
consent,  waiver or other  action of the  Holder of any  Certificate  shall bind
every future Holder of the same Certificate and the Holder of every  Certificate
issued upon the registration of transfer  thereof or in exchange  therefor or in
lieu thereof in respect of anything done,  omitted or suffered to be done by the
Trustee,  the Seller or the Master Servicer in reliance thereon,  whether or not
notation of such action is made upon such Certificate.

            SECTION 1.03      EFFECT OF HEADINGS AND TABLE OF CONTENTS.

            The Article and Section  headings in this Agreement and the Table of
Contents  are for  convenience  of  reference  only and  shall  not  affect  the
interpretation or construction of this Agreement.

            SECTION 1.04      BENEFITS OF AGREEMENT.

            Nothing  in  this  Agreement  or in  the  Certificates,  express  or
implied,  shall give to any Person, other than the parties to this Agreement and
their  successors  hereunder and the Holders of the  Certificates any benefit or
any legal or equitable right, power, remedy or claim under this Agreement.


<PAGE>


                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

            SECTION 2.01      CONVEYANCE OF MORTGAGE LOANS.

            The Seller,  concurrently  with the execution  and delivery  hereof,
does hereby  assign to the Trustee,  without  recourse all the right,  title and
interest of the Seller in and to (a) the Trust  Estate,  including  all interest
(other than the portion,  if any,  representing  the Fixed  Retained  Yield) and
principal  received by the Seller on or with respect to the Mortgage Loans after
the Cut-Off Date (and including scheduled payments of principal and interest due
after the Cut-Off  Date but received by the Seller on or before the Cut-Off Date
and Unscheduled  Principal Receipts received or applied on the Cut-Off Date, but
not including payments of principal and interest due on the Mortgage Loans on or
before the Cut-Off Date), (b) the Insurance Policies, (c) the obligations of the
Servicers under the Servicing  Agreements with respect to the Mortgage Loans and
(d) proceeds of all the foregoing.

            In connection with such assignment,  the Seller shall,  with respect
to each Mortgage Loan,  deliver,  or cause to be delivered,  to the Trustee,  as
initial  Custodian,  on or before the Closing Date, an Owner Mortgage Loan File.
If any  Mortgage  or an  assignment  of a Mortgage  to the  Trustee or any prior
assignment is in the process of being  recorded on the Closing Date,  the Seller
shall deliver a copy thereof,  certified by Norwest  Mortgage or the  applicable
Norwest  Mortgage  Correspondent  to be a true and complete copy of the document
sent for recording, and the Seller shall use its best efforts to cause each such
original  recorded  document or  certified  copy  thereof to be delivered to the
Trustee promptly  following its recordation,  but in no event later than one (1)
year  following the Closing Date. The Seller shall also cause to be delivered to
the  Trustee any other  original  mortgage  loan  document to be included in the
Owner Mortgage Loan File if a copy thereof has been delivered.  The Seller shall
pay from its own funds, without any right of reimbursement  therefor, the amount
of any costs, liabilities and expenses incurred by the Trust Estate by reason of
the failure of the Seller to cause to be delivered to the Trustee within one (1)
year  following  the  Closing  Date any  original  Mortgage or  assignment  of a
Mortgage not delivered to the Trustee on the Closing Date.

            In lieu of recording an  assignment  of any Mortgage the Seller may,
to the extent set forth in the applicable Servicing Agreement,  deliver or cause
to be delivered  to the Trustee the  assignment  of the  Mortgage  Loan from the
Seller to the  Trustee in a form  suitable  for  recordation,  together  with an
Opinion of Counsel to the effect that  recording  is not required to protect the
Trustee's  right,  title and interest in and to the related Mortgage Loan or, in
case a  court  should  recharacterize  the  sale  of  the  Mortgage  Loans  as a
financing, to perfect a first priority security interest in favor of the Trustee
in the related  Mortgage  Loan. In the event that the Master  Servicer  receives
notice that  recording  is required to protect the right,  title and interest of
the  Trustee  in and to any such  Mortgage  Loan  for  which  recordation  of an
assignment has not previously been required,  the Master Servicer shall promptly
notify the Trustee  and the Trustee  shall  within five  Business  Days (or such
other reasonable  period of time mutually agreed upon by the Master Servicer and
the Trustee) of its receipt of such notice  deliver each  previously  unrecorded
assignment to the related Servicer for recordation.

            SECTION 2.02      ACCEPTANCE BY TRUSTEE.

            The  Trustee,  acknowledges  receipt  of  the  Mortgage  Notes,  the
Mortgages,  the assignments and other documents  required to be delivered on the
Closing Date  pursuant to Section 2.01 above and declares that it holds and will
hold such  documents and the other  documents  constituting  a part of the Owner
Mortgage Loan Files delivered to it in trust,  upon the trusts herein set forth,
for the use and  benefit  of all  present  and  future  Certificateholders.  The
Trustee  agrees,  for the  benefit of  Certificateholders,  to review each Owner
Mortgage Loan File within 45 days after  execution of this Agreement in order to
ascertain  that all  required  documents  set  forth in  Section  2.01 have been
executed and received and appear  regular on their face, and that such documents
relate to the Mortgage Loans identified in the Mortgage Loan Schedule, and in so
doing the Trustee may rely on the purported due execution and genuineness of any
such document and on the purported  genuineness  of any  signature  thereon.  If
within such 45 day period the Trustee finds any document  constituting a part of
an Owner  Mortgage  Loan File not to have been  executed  or  received  or to be
unrelated to the Mortgage Loans  identified in the Mortgage Loan Schedule or not
to appear  regular on its face, the Trustee shall promptly (and in no event more
than 30 days after the discovery of such defect) notify the Seller,  which shall
have a period of 60 days after the date of such notice  within  which to correct
or cure any such defect.  The Seller  hereby  covenants  and agrees that, if any
material defect is not so corrected or cured, the Seller will, not later than 60
days after the Trustee's  notice to it referred to above respecting such defect,
either (i)  repurchase  the related  Mortgage  Loan or any property  acquired in
respect thereof from the Trust Estate at a price equal to (a) 100% of the unpaid
principal  balance  of such  Mortgage  Loan  plus (b)  accrued  interest  at the
Mortgage  Interest Rate, less any Fixed Retained Yield,  through the last day of
the month in which such  repurchase  takes  place or (ii) if within two years of
the  Startup  Day,  or such  other  period  permitted  by the REMIC  Provisions,
substitute for any Mortgage Loan to which such material  defect  relates,  a new
mortgage loan (a "Substitute Mortgage Loan") having such characteristics so that
the  representations  and warranties of the Seller set forth in Section  2.03(b)
hereof (other than Section  2.03(b)(i))  would not have been  incorrect had such
Substitute  Mortgage Loan originally been a Mortgage Loan. In no event shall any
Substitute  Mortgage Loan have an unpaid  principal  balance,  as of the date of
substitution,  greater  than the  Scheduled  Principal  Balance  (reduced by the
scheduled payment of principal due on the Due Date in the month of substitution)
of the Mortgage Loan for which it is substituted.  In addition,  such Substitute
Mortgage  Loan  shall  have a  Loan-to-Value  Ratio  less than or equal to and a
Mortgage  Interest  Rate  equal to that of the  Mortgage  Loan  for  which it is
substituted.

            In the case of a repurchased Mortgage Loan or property, the purchase
price shall be deposited by the Seller in the Certificate  Account maintained by
the Master  Servicer  pursuant  to  Section  3.01.  In the case of a  Substitute
Mortgage Loan, the Owner Mortgage Loan File relating  thereto shall be delivered
to the Trustee and the Substitution Principal Amount, together with (i) interest
on such  Substitution  Principal Amount at the applicable Net Mortgage  Interest
Rate to the following Due Date of such Mortgage Loan which is being  substituted
for and (ii) an amount equal to the aggregate  amount of  unreimbursed  Periodic
Advances  in respect of interest  previously  made by the  Servicer,  the Master
Servicer or the Trustee with respect to such Mortgage  Loan,  shall be deposited
in the Certificate  Account. The Monthly Payment on the Substitute Mortgage Loan
for the Due Date in the  month of  substitution  shall  not be part of the Trust
Estate. Upon receipt by the Trustee of written  notification of any such deposit
signed by an officer of the Seller,  or the new Owner Mortgage Loan File, as the
case may be, the Trustee shall release to the Seller the related Owner  Mortgage
Loan  File and  shall  execute  and  deliver  such  instrument  of  transfer  or
assignment,  in each case without recourse, as shall be necessary to vest in the
Seller  legal  and  beneficial  ownership  of such  substituted  or  repurchased
Mortgage Loan or property.  It is understood  and agreed that the  obligation of
the Seller to substitute a new Mortgage Loan for or repurchase any Mortgage Loan
or property as to which such a material defect in a constituent  document exists
shall  constitute  the sole  remedy  respecting  such  defect  available  to the
Certificateholders  or the  Trustee  on  behalf of the  Certificateholders.  The
failure of the Trustee to give any notice  contemplated herein within forty-five
(45) days after the execution of this Agreement  shall not affect or relieve the
Seller's  obligation  to  repurchase  any Mortgage Loan pursuant to this Section
2.02.

            The Trustee may, concurrently with the execution and delivery hereof
or at any time thereafter, enter into a Custodial Agreement substantially in the
form of Exhibit E hereto  pursuant to which the Trustee  appoints a Custodian to
hold the Mortgage  Notes,  the Mortgages,  the  assignments  and other documents
related to the Mortgage Loans received by the Trustee,  in trust for the benefit
of all present and future  Certificateholders,  which may  provide,  among other
things,  that the Custodian shall conduct the review of such documents  required
under the first paragraph of this Section 2.02.

            SECTION 2.03      REPRESENTATIONS  AND  WARRANTIES  OF THE MASTER
SERVICER AND THE SELLER.

            (a) The  Master  Servicer  hereby  represents  and warrants to the
Trustee for the benefit of Certificateholders  that, as of the date of execution
of this Agreement:

               (i) The Master Servicer is a national  banking  association  duly
      chartered  and  validly  existing in good  standing  under the laws of the
      United States;

               (ii) The execution  and delivery of this  Agreement by the Master
      Servicer  and its  performance  and  compliance  with  the  terms  of this
      Agreement  will not violate  the Master  Servicer's  corporate  charter or
      by-laws or  constitute a default (or an event which,  with notice or lapse
      of time,  or both,  would  constitute a default)  under,  or result in the
      breach of, any material  contract,  agreement or other instrument to which
      the Master  Servicer is a party or which may be  applicable  to the Master
      Servicer or any of its assets;

               (iii) This Agreement,  assuming due authorization,  execution and
      delivery by the Trustee and the  Seller,  constitutes  a valid,  legal and
      binding  obligation  of the  Master  Servicer,  enforceable  against it in
      accordance  with  the  terms  hereof  subject  to  applicable  bankruptcy,
      insolvency,  reorganization,  moratorium  and  other  laws  affecting  the
      enforcement of creditors'  rights  generally and to general  principles of
      equity,  regardless  of  whether  such  enforcement  is  considered  in  a
      proceeding in equity or at law;

               (iv) The Master  Servicer is not in default  with  respect to any
      order or  decree of any court or any  order,  regulation  or demand of any
      federal, state, municipal or governmental agency, which default might have
      consequences  that would  materially  and  adversely  affect the condition
      (financial  or  other)  or  operations  of  the  Master  Servicer  or  its
      properties or might have  consequences  that would affect its  performance
      hereunder; and

               (v) No litigation  is  pending  or,  to the  best  of the  Master
      Servicer's  knowledge,  threatened against the Master Servicer which would
      prohibit its entering into this  Agreement or performing  its  obligations
      under this Agreement.

            It is understood and agreed that the  representations and warranties
set forth in this Section 2.03(a) shall survive delivery of the respective Owner
Mortgage Loan Files to the Trustee or the Custodian.

            (b) The  Seller hereby  represents and warrants to the Trustee for
the benefit of  Certificateholders  that,  as of the date of  execution  of this
Agreement,  with respect to the Mortgage  Loans,  or each Mortgage  Loan, as the
case may be:

               (i) The  information set forth in the Mortgage  Loan Schedule was
      true and correct in all material  respects at the date or dates respecting
      which such  information  is furnished  as  specified in the Mortgage  Loan
      Schedule;

               (ii)   Immediately   prior  to  the   transfer   and   assignment
      contemplated  herein,  the  Seller  was the sole  owner and  holder of the
      Mortgage  Loan free and clear of any and all  liens,  pledges,  charges or
      security  interests of any nature and has full right and authority to sell
      and assign the same;

               (iii) The Mortgage is a valid,  subsisting and enforceable  first
      lien on the property therein described, and the Mortgaged Property is free
      and clear of all  encumbrances  and liens having  priority  over the first
      lien of the  Mortgage  except for liens for real estate  taxes and special
      assessments  not yet due and payable and liens or interests  arising under
      or as a result of any federal, state or local law, regulation or ordinance
      relating to hazardous wastes or hazardous substances,  and, if the related
      Mortgaged  Property is a  condominium  unit,  any lien for common  charges
      permitted by statute or homeowners  association fees; and if the Mortgaged
      Property consists of shares of a cooperative housing corporation, any lien
      for  amounts  due  to  the  cooperative  housing  corporation  for  unpaid
      assessments  or  charges  or  any  lien  of any  assignment  of  rents  or
      maintenance expenses secured by the real property owned by the cooperative
      housing  corporation;  and any  security  agreement,  chattel  mortgage or
      equivalent  document  related to, and  delivered  to the Trustee or to the
      Custodian  with,  any  Mortgage  establishes  in the  Seller  a valid  and
      subsisting first lien on the property described therein and the Seller has
      full right to sell and assign the same to the Trustee;

               (iv)  Neither the Seller nor any prior  holder of the Mortgage or
      the  related  Mortgage  Note has  modified  the  Mortgage  or the  related
      Mortgage Note in any material respect, satisfied, canceled or subordinated
      the Mortgage in whole or in part, released the Mortgaged Property in whole
      or in part from the lien of the  Mortgage,  or executed any  instrument of
      release, cancellation,  modification or satisfaction,  except in each case
      as is reflected in an agreement  delivered to the Trustee or the Custodian
      pursuant to Section 2.01;

               (v) All taxes, governmental assessments,  insurance premiums, and
      water, sewer and municipal charges,  which previously became due and owing
      have been paid, or an escrow of funds has been established,  to the extent
      permitted by law, in an amount sufficient to pay for every such item which
      remains  unpaid;  and the Seller has not advanced  funds,  or received any
      advance  of  funds  by a party  other  than  the  Mortgagor,  directly  or
      indirectly  (except  pursuant to any  Subsidy  Loan  arrangement)  for the
      payment of any  amount  required  by the  Mortgage,  except  for  interest
      accruing from the date of the Mortgage Note or date of disbursement of the
      Mortgage Loan proceeds,  whichever is later,  to the day which precedes by
      thirty days the first Due Date under the related Mortgage Note;

               (vi)  The  Mortgaged   Property  is  undamaged  by  water,  fire,
      earthquake,  earth  movement  other  than  earthquake,  windstorm,  flood,
      tornado or similar  casualty  (excluding  casualty  from the  presence  of
      hazardous wastes or hazardous substances,  as to which the Seller makes no
      representations),  so as to affect  adversely  the value of the  Mortgaged
      Property  as  security  for the  Mortgage  Loan or the use for  which  the
      premises were intended and to the best of the Seller's knowledge, there is
      no proceeding pending or threatened for the total or partial  condemnation
      of the Mortgaged Property;

               (vii) The Mortgaged  Property is free and clear of all mechanics'
      and materialmen's liens or liens in the nature thereof; provided, however,
      that this  warranty  shall be deemed  not to have been made at the time of
      the initial issuance of the Certificates if a title policy  affording,  in
      substance,  the same protection  afforded by this warranty is furnished to
      the Trustee by the Seller;

               (viii)  Except for  Mortgage  Loans  secured by Co-op  Shares and
      Mortgage  Loans secured by  residential  long-term  leases,  the Mortgaged
      Property  consists  of a fee simple  estate in real  property;  all of the
      improvements  which  are  included  for the  purpose  of  determining  the
      appraised value of the Mortgaged Property lie wholly within the boundaries
      and building  restriction  lines of such property and no  improvements  on
      adjoining  properties encroach upon the Mortgaged Property (unless insured
      against under the related title insurance policy);  and to the best of the
      Seller's  knowledge,  the Mortgaged Property and all improvements  thereon
      comply with all requirements of any applicable zoning and subdivision laws
      and ordinances;

               (ix) The Mortgage Loan meets, or is exempt from, applicable state
      or federal laws, regulations and other requirements,  pertaining to usury,
      and the Mortgage Loan is not usurious;

               (x)To  the  best  of the  Seller's  knowledge,  all  inspections,
      licenses  and  certificates  required to be made or issued with respect to
      all occupied  portions of the Mortgaged  Property and, with respect to the
      use and occupancy of the same, including, but not limited to, certificates
      of  occupancy  and  fire  underwriting  certificates,  have  been  made or
      obtained from the appropriate authorities;

               (xi)  All  payments  required  to be  made  up to  the  Due  Date
      immediately  preceding  the Cut-Off Date for such  Mortgage Loan under the
      terms of the related Mortgage Note have been made and no Mortgage Loan had
      more than one delinquency in the 12 months preceding the Cut-Off Date;

               (xii)  The  Mortgage  Note,   the  related   Mortgage  and  other
      agreements executed in connection  therewith are genuine,  and each is the
      legal, valid and binding  obligation of the maker thereof,  enforceable in
      accordance  with its terms,  except as such  enforcement may be limited by
      bankruptcy, insolvency, reorganization or other similar laws affecting the
      enforcement  of  creditors'   rights   generally  and  by  general  equity
      principles  (regardless  of whether such  enforcement  is  considered in a
      proceeding  in  equity  or at  law);  and,  to the  best  of the  Seller's
      knowledge,  all parties to the  Mortgage  Note and the  Mortgage had legal
      capacity to execute the Mortgage  Note and the Mortgage and each  Mortgage
      Note and Mortgage has been duly and properly executed by the Mortgagor;

               (xiii) Any and all  requirements  of any federal,  state or local
      law with  respect to the  origination  of the  Mortgage  Loans  including,
      without limitation,  truth-in-lending,  real estate settlement procedures,
      consumer credit  protection,  equal credit  opportunity or disclosure laws
      applicable to the Mortgage Loans have been complied with;

               (xiv)  The  proceeds  of  the  Mortgage  Loans  have  been  fully
      disbursed,  there is no requirement for future advances thereunder and any
      and  all  requirements  as  to  completion  of  any  on-site  or  off-site
      improvements  and as to  disbursements  of any escrow funds  therefor have
      been complied with (except for escrow funds for exterior items which could
      not be  completed  due to weather and escrow funds for the  completion  of
      swimming  pools);  and all costs,  fees and  expenses  incurred in making,
      closing or recording  the Mortgage Loan have been paid,  except  recording
      fees with respect to Mortgages not recorded as of the Closing Date;

               (xv) The Mortgage  Loan  (except any  Mortgage  Loan secured by a
      Mortgaged Property located in any jurisdiction,  as to which an opinion of
      counsel of the type customarily  rendered in such  jurisdiction in lieu of
      title insurance is instead  received) is covered by an American Land Title
      Association mortgagee title insurance policy or other generally acceptable
      form of policy or insurance acceptable to FNMA or FHLMC, issued by a title
      insurer  acceptable  to  FNMA  or  FHLMC  insuring  the  originator,   its
      successors  and assigns,  as to the first priority lien of the Mortgage in
      the original principal amount of the Mortgage Loan and subject only to (A)
      the lien of current real property  taxes and  assessments  not yet due and
      payable,  (B)  covenants,  conditions  and  restrictions,  rights  of way,
      easements  and other  matters of public record as of the date of recording
      of such Mortgage  acceptable to mortgage lending  institutions in the area
      in which the Mortgaged Property is located or specifically  referred to in
      the appraisal  performed in connection with the origination of the related
      Mortgage Loan, (C) liens created  pursuant to any federal,  state or local
      law,  regulation or ordinance affording liens for the costs of clean-up of
      hazardous  substances  or  hazardous  wastes  or for  other  environmental
      protection  purposes and (D) such other  matters to which like  properties
      are  commonly  subject  which do not  individually,  or in the  aggregate,
      materially  interfere  with the  benefits of the  security  intended to be
      provided by the Mortgage; the Seller is the sole insured of such mortgagee
      title  insurance  policy,  the  assignment  to the Trustee of the Seller's
      interest in such  mortgagee  title  insurance  policy does not require any
      consent of or  notification  to the insurer which has not been obtained or
      made, such mortgagee  title  insurance  policy is in full force and effect
      and will be in full  force  and  effect  and inure to the  benefit  of the
      Trustee,  no claims have been made under such  mortgagee  title  insurance
      policy, and no prior holder of the related Mortgage, including the Seller,
      has done, by act or omission,  anything which would impair the coverage of
      such mortgagee title insurance policy;

               (xvi) The  Mortgaged  Property  securing  each  Mortgage  Loan is
      insured by an insurer acceptable to FNMA or FHLMC against loss by fire and
      such  hazards  as  are  covered   under  a  standard   extended   coverage
      endorsement, in an amount which is not less than the lesser of 100% of the
      insurable value of the Mortgaged  Property and the  outstanding  principal
      balance of the Mortgage Loan, but in no event less than the minimum amount
      necessary to fully compensate for any damage or loss on a replacement cost
      basis;  if the Mortgaged  Property is a  condominium  unit, it is included
      under the coverage  afforded by a blanket policy for the project;  if upon
      origination  of the  Mortgage  Loan,  the  improvements  on the  Mortgaged
      Property were in an area identified in the Federal Register by the Federal
      Emergency  Management  Agency as having  special  flood  hazards,  a flood
      insurance policy meeting the requirements of the current guidelines of the
      Federal Insurance  Administration is in effect with a generally acceptable
      insurance carrier,  in an amount  representing  coverage not less than the
      least of (A) the outstanding  principal  balance of the Mortgage Loan, (B)
      the full  insurable  value of the  Mortgaged  Property and (C) the maximum
      amount of insurance which was available under the National Flood Insurance
      Act of  1968,  as  amended;  and each  Mortgage  obligates  the  Mortgagor
      thereunder  to maintain  all such  insurance at the  Mortgagor's  cost and
      expense;

               (xvii)  To  the  best  of the  Seller's  knowledge,  there  is no
      default,  breach,  violation or event of  acceleration  existing under the
      Mortgage or the related Mortgage Note and no event which, with the passage
      of time or with  notice and the  expiration  of any grace or cure  period,
      would  constitute a default,  breach,  violation or event of acceleration;
      the  Seller  has not waived any  default,  breach,  violation  or event of
      acceleration;  and no  foreclosure  action is currently  threatened or has
      been commenced with respect to the Mortgage Loan;

               (xviii) No  Mortgage  Note or Mortgage is subject to any right of
      rescission,  set-off,  counterclaim  or defense,  including the defense of
      usury,  nor will the operation of any of the terms of the Mortgage Note or
      Mortgage,  or the  exercise of any right  thereunder,  render the Mortgage
      Note or Mortgage unenforceable,  in whole or in part, or subject it to any
      right of  rescission,  set-off,  counterclaim  or defense,  including  the
      defense of usury, and no such right of rescission,  set-off,  counterclaim
      or defense has been asserted with respect thereto;

               (xix)  Each  Mortgage  Note  is  payable  in  monthly   payments,
      resulting in complete amortization of the Mortgage Loan over a term of not
      more than 360 months;

               (xx) Each Mortgage contains customary and enforceable  provisions
      such as to render the rights and remedies of the holder  thereof  adequate
      for the realization  against the Mortgaged Property of the benefits of the
      security,  including  realization by judicial  foreclosure (subject to any
      limitation  arising from any  bankruptcy,  insolvency or other law for the
      relief of debtors), and there is no homestead or other exemption available
      to the Mortgagor which would interfere with such right of foreclosure;

               (xxi) To the best of the  Seller's  knowledge,  no Mortgagor is a
      debtor in any state or federal bankruptcy or insolvency proceeding;

               (xxii) Each  Mortgaged  Property is located in the United  States
      and  consists  of a one- to  four-unit  residential  property,  which  may
      include  a  detached  home,  townhouse,  condominium  unit  or a unit in a
      planned  unit  development  or, in the case of Mortgage  Loans  secured by
      Co-op Shares, leases or occupancy agreements;

               (xxiii) The Mortgage  Loan is a "qualified  mortgage"  within the
      meaning of Section 860G(a)(3) of the Code;

               (xxiv) With respect to each Mortgage  where a lost note affidavit
      has been  delivered to the Trustee in place of the related  Mortgage Note,
      the related Mortgage Note is no longer in existence;

               (xxv) In the event that the Mortgagor is an inter vivos  "living"
      trust,  (i) such trust is in compliance  with FNMA or FHLMC  standards for
      inter vivos trusts and (ii)  holding  title to the  Mortgaged  Property in
      such trust will not diminish any rights as a creditor  including the right
      to  full  title  to  the  Mortgaged  Property  in  the  event  foreclosure
      proceedings are initiated; and

               (xxvi) If the Mortgage Loan is secured by a long-term residential
      lease,  (1) the lessor under the lease holds a fee simple  interest in the
      land; (2) the terms of such lease  expressly  permit the mortgaging of the
      leasehold estate, the assignment of the lease without the lessor's consent
      and the  acquisition  by the holder of the  Mortgage  of the rights of the
      lessee upon  foreclosure  or assignment in lieu of  foreclosure or provide
      the holder of the Mortgage with substantially similar protections; (3) the
      terms of such  lease do not (a) allow  the  termination  thereof  upon the
      lessee's  default  without the holder of the  Mortgage  being  entitled to
      receive  written  notice of, and  opportunity to cure,  such default,  (b)
      allow the  termination  of the lease in the event of damage or destruction
      as long as the  Mortgage is in  existence,  (c) prohibit the holder of the
      Mortgage from being insured (or receiving proceeds of insurance) under the
      hazard insurance policy or policies relating to the Mortgaged  Property or
      (d) permit any increase in rent other than  pre-established  increases set
      forth in the lease;  (4) the original  term of such lease is not less than
      15 years; (5) the term of such lease does not terminate  earlier than five
      years after the maturity date of the Mortgage  Note; and (6) the Mortgaged
      Property  is  located  in a  jurisdiction  in which  the use of  leasehold
      estates in  transferring  ownership in residential  properties is a widely
      accepted practice.

            Notwithstanding the foregoing,  no representations or warranties are
made by the Seller as to the environmental  condition of any Mortgaged Property;
the absence,  presence or effect of hazardous wastes or hazardous  substances on
any Mortgaged  Property;  any casualty  resulting from the presence or effect of
hazardous  wastes  or  hazardous  substances  on,  near or  emanating  from  any
Mortgaged  Property;  the  impact  on  Certificateholders  of any  environmental
condition  or  presence  of any  hazardous  substance  on or near any  Mortgaged
Property;  or the  compliance of any Mortgaged  Property with any  environmental
laws, nor is any agent,  person or entity  otherwise  affiliated with the Seller
authorized  or able to make any such  representation,  warranty or assumption of
liability relative to any Mortgaged Property. In addition, no representations or
warranties are made by the Seller with respect to the absence or effect of fraud
in the origination of any Mortgage Loan.

            It is understood and agreed that the  representations and warranties
set forth in this Section 2.03(b) shall survive delivery of the respective Owner
Mortgage Loan Files to the Trustee and shall inure to the benefit of the Trustee
notwithstanding any restrictive or qualified endorsement or assignment.

            (c) Upon discovery by either the Seller, the Master Servicer,  the
Trustee or the Custodian that any of the  representations and warranties made in
subsection (b) above is not accurate (referred to herein as a "breach") and that
such  breach   materially   and   adversely   affects  the   interests   of  the
Certificateholders  in the related  Mortgage  Loan, the party  discovering  such
breach shall give prompt  written  notice to the other  parties  (any  Custodian
being so obligated under a Custodial  Agreement).  Within 60 days of the earlier
of its  discovery or its receipt of notice of any such breach,  the Seller shall
cure such breach in all  material  respects or shall either (i)  repurchase  the
Mortgage Loan or any property  acquired in respect thereof from the Trust Estate
at a price equal to (A) 100% of the unpaid  principal  balance of such  Mortgage
Loan  plus (B)  accrued  interest  at the Net  Mortgage  Interest  Rate for such
Mortgage  Loan through the last day of the month in which such  repurchase  took
place or (ii) if within  two years of the  Startup  Day,  or such  other  period
permitted by the REMIC  Provisions,  substitute  for such  Mortgage  Loan in the
manner described in Section 2.02. The purchase price of any repurchase described
in this paragraph and the Substitution  Principal  Amount,  if any, plus accrued
interest  thereon and the other amounts  referred to in Section  2.02,  shall be
deposited  in the  Certificate  Account.  It is  understood  and agreed that the
obligation of the Seller to  repurchase  or substitute  for any Mortgage Loan or
property  as to  which  such a  breach  has  occurred  and is  continuing  shall
constitute   the   sole   remedy    respecting   such   breach    available   to
Certificateholders  or the  Trustee  on behalf of  Certificateholders,  and such
obligation shall survive until termination of the Trust Estate hereunder.

            SECTION 2.04      EXECUTION AND DELIVERY OF CERTIFICATES.

            The Trustee  acknowledges the assignment to it of the Mortgage Loans
and the delivery of the Owner Mortgage Loan Files to it, and,  concurrently with
such  delivery,  (i)  acknowledges  the issuance of and hereby  declares that it
holds the Uncertificated  Lower-Tier Interests on behalf of the Upper-Tier REMIC
and  Certificateholders and (ii) has executed and delivered to or upon the order
of the Seller, in exchange for the Mortgage Loans and Uncertificated  Lower-Tier
Interests  together with all other assets  included in the  definition of "Trust
Estate",  receipt of which is hereby  acknowledged,  Certificates  in authorized
denominations  which,  together with the  Uncertificated  Lower-Tier  Interests,
evidence ownership of the entire Trust Estate.

            SECTION 2.05      DESIGNATION  OF  CERTIFICATES;  DESIGNATION  OF
STARTUP DAY AND LATEST POSSIBLE MATURITY DATE.

            The Seller  hereby  designates  the Classes of Class A  Certificates
(other than the Class A-R and Class A-LR  Certificates) and the Classes of Class
B Certificates  as classes of "regular  interests" and the Class A-R Certificate
as the single  class of  "residual  interest"  in the  Upper-Tier  REMIC for the
purposes of Code Sections  860G(a)(1) and 860G(a)(2),  respectively.  The Seller
hereby further  designates the Class A-L1 Interest,  Class A-L5 Interest,  Class
A-L7 Interest,  Class A-L8 Interest, Class A-L12 Interest, Class A-L14 Interest,
Class A-LPO  Interest,  Class A-LUR  Interest,  Class B-L1 Interest,  Class B-L2
Interest,  Class B-L3  Interest,  Class B-L4  Interest,  Class B-L5 Interest and
Class  B-L6  Interest  as  classes  of  "regular  interests"  and the Class A-LR
Certificate as the single class of "residual  interest" in the Lower-Tier  REMIC
for the purposes of Code Sections 860G(a)(1) and 860G(a)(2),  respectively.  The
Closing Date is hereby designated as the "Startup Day" of each of the Upper-Tier
REMIC and Lower-Tier  REMIC within the meaning of Code Section  860G(a)(9).  The
"latest possible maturity date" of the regular interests in the Upper-Tier REMIC
and Lower-Tier REMIC is June 25, 2029 for purposes of Code Section 860G(a)(1).


<PAGE>


                                   ARTICLE III

                ADMINISTRATION OF THE TRUST ESTATE: SERVICING
                              OF THE MORTGAGE LOANS

            SECTION 3.01      CERTIFICATE ACCOUNT.

            (a) The Master Servicer shall establish and maintain a Certificate
Account for the deposit of funds received by the Master Servicer with respect to
the Mortgage Loans  serviced by each Servicer  pursuant to each of the Servicing
Agreements.  Such account shall be maintained as an Eligible Account. The Master
Servicer  shall give notice to each  Servicer  and the Seller of the location of
the Certificate Account and of any change in the location thereof.

            (b) The Master Servicer shall deposit into the Certificate Account
on the day of receipt  thereof  all  amounts  received  by it from any  Servicer
pursuant to any of the Servicing  Agreements,  and shall,  in addition,  deposit
into the  Certificate  Account  the  following  amounts,  in the case of amounts
specified  in clause  (i),  not later than the  Distribution  Date on which such
amounts are required to be distributed to Certificateholders and, in the case of
the amounts  specified  in clause  (ii),  not later than the  Business  Day next
following the day of receipt and posting by the Master Servicer:

               (i) Periodic Advances  pursuant  to Section  3.03(a)  made by the
      Master Servicer or the Trustee,  if any and any amounts deemed received by
      the Master Servicer pursuant to Section 3.01(d); and

               (ii) in the case of any Mortgage Loan that is  repurchased by the
      Seller pursuant to Section 2.02 or 2.03 or that is auctioned by the Master
      Servicer  pursuant to Section  3.08 or  purchased  by the Master  Servicer
      pursuant to Section 3.08 or 9.01,  the purchase  price  therefor or, where
      applicable,  any Substitution Principal Amount and any amounts received in
      respect of the interest portion of unreimbursed Periodic Advances.

            (c) The  Master  Servicer shall cause the funds in the Certificate
Account to be invested in Eligible  Investments.  No such  Eligible  Investments
will be sold or  disposed  of at a gain  prior to  maturity  unless  the  Master
Servicer has received an Opinion of Counsel or other evidence satisfactory to it
that such sale or  disposition  will not cause the Trust Estate to be subject to
Prohibited Transactions Tax, otherwise subject the Trust Estate to tax, or cause
either of the Upper-Tier  REMIC or the Lower-Tier  REMIC to fail to qualify as a
REMIC while any  Certificates  are  outstanding.  Any amounts  deposited  in the
Certificate  Account  prior to the  Distribution  Date shall be invested for the
account  of the Master  Servicer  and any  investment  income  thereon  shall be
additional  compensation to the Master Servicer for services rendered under this
Agreement.  The amount of any losses incurred in respect of any such investments
shall be deposited in the Certificate  Account by the Master Servicer out of its
own funds immediately as realized.

            (d) For  purposes of this  Agreement,  the Master Servicer will be
deemed to have received from a Servicer on the  applicable  Remittance  Date for
such funds all amounts deposited by such Servicer into the Custodial Account for
P&I maintained in accordance with the applicable  Servicing  Agreement,  if such
Custodial  Account  for  P&I is not an  Eligible  Account  as  defined  in  this
Agreement,  to the extent such amounts are not  actually  received by the Master
Servicer  on such  Remittance  Date as a result of the  bankruptcy,  insolvency,
receivership or other financial distress of the depository  institution in which
such  Custodial  Account  for P&I is being held.  To the extent that  amounts so
deemed to have been received by the Master Servicer are subsequently remitted to
the Master  Servicer,  the Master  Servicer  shall be  entitled  to retain  such
amounts.

            SECTION 3.02      PERMITTED  WITHDRAWALS  FROM  THE  CERTIFICATE
ACCOUNT.

            (a) The  Master Servicer may, from time to time, make  withdrawals
from the Certificate Account for the following purposes (limited, in the case of
Servicer  reimbursements,  to cases where funds in the respective  Custodial P&I
Account are not sufficient therefor):

               (i) to reimburse the Master Servicer, the Trustee or any Servicer
      for Periodic  Advances made by the Master Servicer or the Trustee pursuant
      to Section  3.03(a) or any Servicer  pursuant to any  Servicing  Agreement
      with respect to previous  Distribution  Dates, such right to reimbursement
      pursuant to this subclause (i) being limited to amounts  received on or in
      respect  of  particular  Mortgage  Loans  (including,  for  this  purpose,
      Liquidation Proceeds,  REO Proceeds and proceeds from the purchase,  sale,
      repurchase or  substitution  of Mortgage  Loans pursuant to Sections 2.02,
      2.03, 3.08 or 9.01) respecting which any such Periodic Advance was made;

               (ii) to  reimburse  any  Servicer,  the  Master  Servicer  or the
      Trustee for any Periodic Advances  determined in good faith to have become
      Nonrecoverable   Advances   provided,   however,   that  any   portion  of
      Nonrecoverable   Advances  representing  Fixed  Retained  Yield  shall  be
      reimbursable only from amounts constituting Fixed Retained Yield and
      not from the assets of the Trust Estate;

               (iii) to  reimburse  the Master  Servicer  or any  Servicer  from
      Liquidation  Proceeds for Liquidation Expenses and for amounts expended by
      the Master  Servicer or any Servicer  pursuant  hereto or to any Servicing
      Agreement,  respectively, in good faith in connection with the restoration
      of damaged property or for foreclosure expenses;

               (iv) from any  Mortgagor  payment on account of interest or other
      recovery  (including  Net  REO  Proceeds)  with  respect  to a  particular
      Mortgage  Loan,  to pay the  Master  Servicing  Fee with  respect  to such
      Mortgage Loan to the Master Servicer;

               (v) to reimburse the Master Servicer, any Servicer or the Trustee
      (or, in certain cases, the Seller) for expenses  incurred by it (including
      taxes  paid  on  behalf  of  the  Trust  Estate)  and  recoverable  by  or
      reimbursable  to it  pursuant to Section  3.03(c),  3.03(d) or 6.03 or the
      second  sentence  of  Section  8.14(a)  or  pursuant  to  such  Servicer's
      Servicing Agreement, provided such expenses are "unanticipated" within the
      meaning of the REMIC Provisions;

               (vi) to pay to the Seller or other purchaser with respect to each
      Mortgage  Loan or  property  acquired  in  respect  thereof  that has been
      repurchased  or  replaced  pursuant to Section  2.02 or 2.03 or  auctioned
      pursuant to Section 3.08 or to pay to the Master  Servicer with respect to
      each Mortgage Loan or property  acquired in respect  thereof that has been
      purchased  pursuant to Section 3.08 or 9.01, all amounts  received thereon
      and not  required  to be  distributed  as of the date on which the related
      repurchase  or  purchase   price  or  Scheduled   Principal   Balance  was
      determined;

               (vii) to remit  funds to the Paying  Agent in the  amounts and in
      the manner provided for herein;

               (viii) to pay to the Master  Servicer any  interest  earned on or
      investment income with respect to funds in the Certificate Account;

               (ix)  to pay to  the  Master  Servicer  or  any  Servicer  out of
      Liquidation Proceeds allocable to interest the amount of any unpaid Master
      Servicing  Fee or  Servicing  Fee (as  adjusted  pursuant  to the  related
      Servicing  Agreement) and any unpaid assumption fees, late payment charges
      or other Mortgagor charges on the related Mortgage Loan;

               (x) to withdraw  from  the   Certificate   Account  any  amount
      deposited  in the  Certificate  Account  that  was  not  required  to be
      deposited therein;

               (xi)     to  clear  and  terminate  the   Certificate   Account
      pursuant to Section 9.01; and

               (xii) to pay to Norwest  Mortgage from any  Mortgagor  payment on
      account of interest or other  recovery  (including  Net REO Proceeds) with
      respect to a particular  Mortgage Loan, the Fixed Retained  Yield, if any,
      with respect to such Mortgage Loan; provided,  however,  that with respect
      to any payment of interest received by the Master Servicer in respect of a
      Mortgage Loan  (whether  paid by the Mortgagor or received as  Liquidation
      Proceeds,  Insurance  Proceeds or  otherwise)  which is less than the full
      amount of interest then due with respect to such Mortgage Loan,  only that
      portion of such payment of interest  that bears the same  relationship  to
      the total amount of such payment of interest as the Fixed  Retained  Yield
      Rate,  if any,  in respect  of such  Mortgage  Loan bears to the  Mortgage
      Interest Rate shall be allocated to the Fixed  Retained Yield with respect
      thereto.

            (b) The   Master   Servicer  shall  keep  and  maintain   separate
accounting,  on a Mortgage  Loan by  Mortgage  Loan  basis,  for the  purpose of
justifying any payment to and withdrawal from the Certificate Account.

            SECTION 3.03      ADVANCES BY MASTER SERVICER AND TRUSTEE.

            (a) In  the  event an Other  Servicer  fails to make any  required
Periodic  Advances of principal  and interest on a Mortgage  Loan as required by
the related Other Servicing  Agreement prior to the Distribution  Date occurring
in the month during  which such  Periodic  Advance is due,  the Master  Servicer
shall make Periodic  Advances to the extent  provided  hereby.  In addition,  if
under the terms of an Other Servicing Agreement,  the applicable Servicer is not
required to make  Periodic  Advances  on a Mortgage  Loan or REO  Mortgage  Loan
through the  liquidation  of such Mortgage Loan or REO Mortgage Loan, the Master
Servicer to the extent provided hereby shall make the Periodic  Advances thereon
during the period the Servicer is not  obligated to do so. In the event  Norwest
Mortgage fails to make any required  Periodic Advances of principal and interest
on a Mortgage Loan as required by the Norwest  Servicing  Agreement prior to the
Distribution  Date occurring in the month during which such Periodic  Advance is
due,  the  Trustee  shall,  to the extent  required by Section  8.15,  make such
Periodic  Advance to the extent provided  hereby,  provided that the Trustee has
previously  received the  certificate  of the Master  Servicer  described in the
following  sentence.  The Master  Servicer  shall  certify to the  Trustee  with
respect  to any such  Distribution  Date (i) the  amount  of  Periodic  Advances
required of Norwest  Mortgage or such Other  Servicer,  as the case may be, (ii)
the amount actually  advanced by Norwest Mortgage or such Other Servicer,  (iii)
the amount that the Trustee or Master Servicer is required to advance hereunder,
including any amount the Master Servicer is required to advance  pursuant to the
second sentence of this Section 3.03(a) and (iv) whether the Master Servicer has
determined  that  it  reasonably  believes  that  such  Periodic  Advance  is  a
Nonrecoverable Advance. Amounts advanced by the Trustee or Master Servicer shall
be  deposited  in the  Certificate  Account on the  related  Distribution  Date.
Notwithstanding the foregoing,  neither the Master Servicer nor the Trustee will
be obligated  to make a Periodic  Advance  that it  reasonably  believes to be a
Nonrecoverable  Advance. The Trustee may conclusively rely for any determination
to be made by it hereunder upon the  determination of the Master Servicer as set
forth in its certificate.

            (b) To  the extent an Other  Servicer  fails to make an advance on
account of the taxes or  insurance  premiums  with  respect  to a Mortgage  Loan
required pursuant to the related Other Servicing Agreement,  the Master Servicer
shall,  if the Master  Servicer  knows of such failure of the Servicer,  advance
such funds and take such steps as are  necessary  to pay such taxes or insurance
premiums.  To the extent Norwest Mortgage fails to make an advance on account of
the taxes or  insurance  premiums  with  respect  to a  Mortgage  Loan  required
pursuant to the Norwest Servicing  Agreement,  the Master Servicer shall, if the
Master  Servicer  knows of such  failure  of  Norwest  Mortgage,  certify to the
Trustee that such failure has occurred. Upon receipt of such certification,  the
Trustee  shall  advance  such funds and take such steps as are  necessary to pay
such taxes or insurance premiums.

            (c) The  Master Servicer and the Trustee shall each be entitled to
be reimbursed from the Certificate  Account for any Periodic  Advance made by it
under Section 3.03(a) to the extent described in Section 3.02(a)(i) and (a)(ii).
The Master Servicer and the Trustee shall be entitled to be reimbursed  pursuant
to Section  3.02(a)(v)  for any advance by it pursuant to Section  3.03(b).  The
Master  Servicer  shall  diligently  pursue  restoration  of such  amount to the
Certificate Account from the related Servicer. The Master Servicer shall, to the
extent it has not already  done so, upon the  request of the  Trustee,  withdraw
from the  Certificate  Account and remit to the Trustee any amounts to which the
Trustee is entitled as reimbursement  pursuant to Section 3.02 (a)(i),  (ii) and
(v).

            (d) Except  as  provided in Section  3.03(a) and (b),  neither the
Master  Servicer nor the Trustee  shall be required to pay or advance any amount
which any  Servicer  was  required,  but failed,  to deposit in the  Certificate
Account.

            SECTION 3.04      TRUSTEE TO COOPERATE; RELEASE OF OWNER MORTGAGE
LOAN FILES.

            Upon the receipt by the Master  Servicer of a Request for Release in
connection  with the deposit by a Servicer into the  Certificate  Account of the
proceeds from a Liquidated  Loan or of a Prepayment in Full, the Master Servicer
shall  confirm to the Trustee  that all  amounts  required to be remitted to the
Certificate  Account  in  connection  with  such  Mortgage  Loan  have  been  so
deposited,  and shall  deliver  such  Request  for Release to the  Trustee.  The
Trustee  shall,  within five  Business Days of its receipt of such a Request for
Release,  release the related Owner Mortgage Loan File to the Master Servicer or
such  Servicer,  as requested by the Master  Servicer.  No expenses  incurred in
connection with any instrument of satisfaction or deed of reconveyance  shall be
chargeable to the Certificate Account.

            From  time  to  time  and  as  appropriate   for  the  servicing  or
foreclosure of any Mortgage Loan, including but not limited to, collection under
any insurance policies, or to effect a partial release of any Mortgaged Property
from the lien of the Mortgage,  the Servicer of such Mortgage Loan shall deliver
to the Master Servicer a Request for Release. Upon the Master Servicer's receipt
of any such Request for Release, the Master Servicer shall promptly forward such
request to the Trustee and the Trustee shall, within five Business Days, release
the related Owner Mortgage Loan File to the Master Servicer or such Servicer, as
requested by the Master  Servicer.  Any such Request for Release shall  obligate
the Master  Servicer  or such  Servicer,  as the case may be, to return each and
every  document  previously  requested  from the Owner Mortgage Loan File to the
Trustee by the twenty-first  day following the release  thereof,  unless (i) the
Mortgage Loan has been liquidated and the Liquidation  Proceeds  relating to the
Mortgage Loan have been deposited in the  Certificate  Account or (ii) the Owner
Mortgage Loan File or such document has been  delivered to an attorney,  or to a
public  trustee or other  public  official as required by law,  for  purposes of
initiating or pursuing legal action or other  proceedings for the foreclosure of
the  Mortgaged  Property  either  judicially or  non-judicially,  and the Master
Servicer has  delivered to the Trustee a certificate  of the Master  Servicer or
such Servicer  certifying as to the name and address of the Person to which such
Owner  Mortgage  Loan File or such  document  was  delivered  and the purpose or
purposes of such  delivery.  Upon  receipt of an  Officer's  Certificate  of the
Master Servicer or such Servicer  stating that such Mortgage Loan was liquidated
and  that all  amounts  received  or to be  received  in  connection  with  such
liquidation which are required to be deposited into the Certificate Account have
been so deposited,  or that such Mortgage Loan has become an REO Mortgage  Loan,
the Request for Release shall be released by the Trustee to the Master  Servicer
or such Servicer, as appropriate.

            Upon written certification of the Master Servicer or the Servicer of
a Mortgage Loan, the Trustee shall execute and deliver to the Master Servicer or
such Servicer, as directed by the Master Servicer, court pleadings, requests for
trustee's sale or other documents necessary to the foreclosure or trustee's sale
in respect of a  Mortgaged  Property  or to any legal  action  brought to obtain
judgment  against any  Mortgagor on the Mortgage Note or Mortgage or to obtain a
deficiency judgment,  or to enforce any other remedies or rights provided by the
Mortgage Note or Mortgage or otherwise  available at law or in equity. Each such
certification  shall  include a request  that such  pleadings  or  documents  be
executed  by the Trustee and a  statement  as to the reason  such  documents  or
pleadings  are  required  and that the  execution  and  delivery  thereof by the
Trustee will not invalidate or otherwise affect the lien of the Mortgage, except
for the termination of such a lien upon completion of the foreclosure proceeding
or trustee's sale.

            SECTION 3.05      REPORTS  TO  THE  TRUSTEE;  ANNUAL  COMPLIANCE
STATEMENTS.

            (a) Not  later  than 15 days  after each  Distribution  Date,  the
Master  Servicer  shall  deliver to the  Trustee a statement  setting  forth the
status  of  the  Certificate  Account  as of  the  close  of  business  on  such
Distribution  Date  stating  that all  distributions  required to be made by the
Master  Servicer  under  this  Agreement  have been made  (or,  if any  required
distribution has not been made by the Master Servicer, specifying the nature and
status  thereof)  and showing,  for the period  covered by such  statement,  the
aggregate  amount of deposits  into and  withdrawals  from such account for each
category of deposit and  withdrawal  specified in Sections  3.01 and 3.02.  Such
statement may be in the form of the then current FNMA monthly  accounting report
for its Guaranteed Mortgage  Pass-Through Program with appropriate additions and
changes, and shall also include information as to the aggregate unpaid principal
balance of all of the Mortgage  Loans as of the close of business as of the last
day of the calendar month immediately  preceding such Distribution  Date. Copies
of such statement shall be provided by the Trustee to any Certificateholder upon
written  request,  provided  such  statement  is  delivered,  or  caused  to  be
delivered, by the Master Servicer to the Trustee.

            (b) The  Master Servicer shall deliver to the Trustee on or before
May 30 of each year, a certificate  signed by an officer of the Master Servicer,
certifying  that (i) such  officer has  reviewed  the  activities  of the Master
Servicer  during  the  preceding  calendar  year  or  portion  thereof  and  its
performance  under  this  agreement  and  (ii) to the  best  of  such  officer's
knowledge, based on such review, the Master Servicer has performed and fulfilled
its  duties,  responsibilities  and  obligations  under  this  agreement  in all
material  respects  throughout such year, or, if there has been a default in the
fulfillment of any such duties, responsibilities or obligations, specifying each
such default known to such officer and the nature and status thereof, and, (iii)
(A)  the  Master   Servicer  has  received  from  each  Servicer  any  financial
statements, officer's certificates, accountant's statements or other information
required to be provided to the Master Servicer pursuant to the related Servicing
Agreement and (B) to the best of such officer's knowledge,  based on a review of
the information provided to the Master Servicer by each Servicer as described in
(iii)(A)   above,   each  Servicer  has  performed  and  fulfilled  its  duties,
responsibilities  and obligations under the related  Servicing  Agreement in all
material  respects  throughout such year, or, if there has been a default in the
fulfillment of any such duties, responsibilities or obligations, specifying each
such default known to such officer and the nature and status thereof.  Copies of
such   officers'   certificate   shall  be   provided  by  the  Trustee  to  any
Certificateholder  upon written request  provided such certificate is delivered,
or caused to be delivered, by the Master Servicer to the Trustee.

            SECTION 3.06      TITLE,  MANAGEMENT  AND  DISPOSITION OF ANY REO
MORTGAGE LOAN.

            The Master  Servicer  shall  ensure that each REO  Mortgage  Loan is
administered  by the  related  Servicer  at all  times so that it  qualifies  as
"foreclosure  property" under the REMIC Provisions and that it does not earn any
"net income from  foreclosure  property" which is subject to tax under the REMIC
Provisions.  In the  event  that a  Servicer  is unable  to  dispose  of any REO
Mortgage Loan within the period  mandated by each of the  Servicing  Agreements,
the Master Servicer shall monitor such Servicer to verify that such REO Mortgage
Loan is auctioned to the highest  bidder within the period so specified.  In the
event of any such sale of REO Mortgage Loan,  the Trustee shall,  at the written
request of the Master Servicer and upon being supported with  appropriate  forms
therefor, within five Business Days of the deposit by the Master Servicer of the
proceeds of such sale or auction into the Certificate Account,  release or cause
to be released to the entity identified by the Master Servicer the related Owner
Mortgage Loan File and Servicer Mortgage Loan File and shall execute and deliver
such instruments of transfer or assignment,  in each case without  recourse,  as
shall be  necessary to vest in the auction  purchaser  title to the REO Mortgage
Loan and the Trustee  shall have no further  responsibility  with regard to such
Owner  Mortgage Loan File or Servicer  Mortgage Loan File.  Neither the Trustee,
the Master  Servicer  nor any  Servicer,  acting on behalf of the Trust  Estate,
shall  provide  financing  from the  Trust  Estate  to any  purchaser  of an REO
Mortgage Loan.

            SECTION 3.07      AMENDMENTS    TO    SERVICING    AGREEMENTS,
MODIFICATION OF STANDARD PROVISIONS.

            (a) Subject  to the prior written consent of the Trustee  pursuant
to Section  3.07(b),  the Master  Servicer  from time to time may, to the extent
permitted by the applicable  Servicing  Agreement,  make such  modifications and
amendments to such Servicing Agreement as the Master Servicer deems necessary or
appropriate  to confirm  or carry out more fully the intent and  purpose of such
Servicing  Agreement  and the duties,  responsibilities  and  obligations  to be
performed by the Servicer  thereunder.  Such  modifications  may only be made if
they are  consistent  with the REMIC  Provisions,  as evidenced by an Opinion of
Counsel.  Prior to the issuance of any  modification  or  amendment,  the Master
Servicer  shall  deliver to the Trustee such Opinion of Counsel and an Officer's
Certificate  setting forth (i) the provision  that is to be modified or amended,
(ii) the modification or amendment that the Master Servicer desires to issue and
(iii) the reason or reasons for such proposed amendment or modification.

            (b) The  Trustee shall consent to any amendment or supplement to a
Servicing Agreement proposed by the Master Servicer pursuant to Section 3.07(a),
which   consent   and   amendment   shall  not   require   the  consent  of  any
Certificateholder  if it is (i)  for  the  purpose  of  curing  any  mistake  or
ambiguity or to further  effect or protect the rights of the  Certificateholders
or (ii) for any other  purpose,  provided such  amendment or supplement for such
other   purpose   cannot    reasonably   be   expected   to   adversely   affect
Certificateholders.  The lack of reasonable  expectation of an adverse effect on
Certificateholders may be established through the delivery to the Trustee of (i)
an  Opinion of Counsel to such  effect or (ii)  written  notification  from each
Rating Agency to the effect that such amendment or supplement will not result in
reduction  of  the  current  rating  assigned  by  that  Rating  Agency  to  the
Certificates.  Notwithstanding  the two  immediately  preceding  sentences,  the
Trustee  may,  in its  discretion,  decline to enter into or consent to any such
supplement  or  amendment  if its own  rights,  duties  or  immunities  shall be
adversely affected.

            (c) (i) Notwithstanding  anything to the  contrary  in this  Section
      3.07,  the Master  Servicer from time to time may,  without the consent of
      any  Certificateholder,  or the Trustee, enter into an amendment (A) to an
      Other  Servicing  Agreement for the purpose of (i) eliminating or reducing
      Month  End  Interest  and  (ii)  providing  for  the  remittance  of  Full
      Unscheduled  Principal  Receipts by the applicable  Servicer to the Master
      Servicer  not later than the 24th day of each month (or if such day is not
      a  Business  Day,  on the  previous  Business  Day) or (B) to the  Norwest
      Servicing Agreement for the purpose of changing the applicable  Remittance
      Date to the 18th day of each month (or if such day is not a Business  Day,
      on the previous Business Day).

               (ii) The Master Servicer may direct Norwest Mortgage to enter
     into an  amendment  to the Norwest  Servicing  Agreement  for the  purposes
     described in Sections 3.07(c)(i)(B) and 10.01(b)(iii).

            SECTION 3.08      OVERSIGHT OF SERVICING.

            The  Master  Servicer  shall  supervise,  monitor  and  oversee  the
servicing of the Mortgage  Loans by each  Servicer and the  performance  by each
Servicer of all services,  duties,  responsibilities and obligations that are to
be  observed  or  performed  by the  Servicer  under  its  respective  Servicing
Agreement.  In performing its obligations  hereunder,  the Master Servicer shall
act in a manner consistent with Accepted Master Servicing Practices and with the
Trustee's and the Certificateholders'  reliance on the Master Servicer, and in a
manner consistent with the terms and provisions of any insurance policy required
to be  maintained  by the  Master  Servicer  or any  Servicer  pursuant  to this
Agreement or any Servicing  Agreement.  The Master  Servicer  acknowledges  that
prior to taking certain  actions  required to service the Mortgage  Loans,  each
Servicing Agreement provides that the Servicer  thereunder must notify,  consult
with,  obtain the consent of or otherwise  follow the instructions of the Master
Servicer.  The Master Servicer is also given authority to waive  compliance by a
Servicer  with  certain  provisions  of its  Servicing  Agreement.  In each such
instance, the Master Servicer shall promptly instruct such Servicer or otherwise
respond  to such  Servicer's  request.  In no  event  will the  Master  Servicer
instruct  such  Servicer to take any action,  give any consent to action by such
Servicer  or  waive  compliance  by such  Servicer  with any  provision  of such
Servicer's  Servicing  Agreement if any resulting action or failure to act would
be  inconsistent  with the  requirements  of the Rating  Agencies that rated the
Certificates    or   would   otherwise   have   an   adverse   effect   on   the
Certificateholders. Any such action or failure to act shall be deemed to have an
adverse effect on the Certificateholders if such action or failure to act either
results in (i) the  downgrading  of the rating  assigned by any Rating Agency to
the Certificates,  (ii) the loss by the Upper-Tier REMIC or the Lower-Tier REMIC
of REMIC status for federal  income tax purposes or (iii) the  imposition of any
Prohibited  Transaction Tax or any federal taxes on either the Upper-Tier REMIC,
the Lower-Tier  REMIC or the Trust Estate.  The Master  Servicer shall have full
power and  authority in its sole  discretion  to take any action with respect to
the Trust Estate as may be  necessary  or  advisable to avoid the  circumstances
specified including clause (ii) or (iii) of the preceding sentence.

            For the  purposes  of  determining  whether  any  modification  of a
Mortgage  Loan shall be  permitted by the Trustee or the Master  Servicer,  such
modification  shall be construed as a substitution of the modified Mortgage Loan
for the Mortgage Loan originally  deposited in the Trust Estate if it would be a
"significant  modification"  within the  meaning of Section  1.860G-2(b)  of the
regulations of the U.S.  Department of the Treasury.  No  modification  shall be
approved  unless (i) the modified  Mortgage  Loan would  qualify as a Substitute
Mortgage Loan under Section 2.02 and (ii) with respect to any modification  that
occurs more than three  months after the Closing Date and is not the result of a
default or a reasonably  foreseeable  default under the Mortgage Loan,  there is
delivered  to the  Trustee an Opinion  of Counsel  (at the  expense of the party
seeking to modify the Mortgage Loan) to the effect that such modification  would
not be treated as giving rise to a new debt  instrument  for federal  income tax
purposes as described in the preceding sentence.

            During the term of this Agreement, the Master Servicer shall consult
fully with each  Servicer as may be  necessary  from time to time to perform and
carry out the Master  Servicer's  obligations  hereunder and otherwise  exercise
reasonable  efforts to  encourage  such  Servicer  to perform  and  observe  the
covenants,  obligations  and  conditions to be performed or observed by it under
its Servicing Agreement.

            The  relationship  of the Master  Servicer to the Trustee under this
Agreement is intended by the parties to be that of an independent contractor and
not that of a joint venturer, partner or agent.

            The Master  Servicer shall  administer the Trust Estate on behalf of
the Trustee and shall have full power and authority, acting alone or (subject to
Section  6.06) through one or more  subcontractors,  to do any and all things in
connection  with such  administration  which it may deem necessary or desirable.
Upon the execution and delivery of this Agreement,  and from time to time as may
be required  thereafter,  the Trustee shall  furnish the Master  Servicer or its
subcontractors  with any powers of attorney  and such other  documents as may be
necessary  or  appropriate  to  enable  the  Master  Servicer  to carry  out its
administrative duties hereunder.

            The Seller  shall be  entitled to  repurchase  at its option (i) any
defaulted  Mortgage  Loan or any Mortgage Loan as to which default is reasonably
foreseeable from the Trust Estate if, in the Seller's  judgment,  the default is
not likely to be cured by the  Mortgagor or (ii) any Mortgage  Loan in the Trust
Estate  which,  pursuant  to  paragraph  5(b)  of  the  Mortgage  Loan  Purchase
Agreement,  Norwest  Mortgage  requests the Seller to repurchase  and to sell to
Norwest Mortgage to facilitate the exercise of Norwest Mortgage's rights against
the  originator or a prior holder of such Mortgage  Loan. The purchase price for
any such  Mortgage  Loan shall be 100% of the unpaid  principal  balance of such
Mortgage Loan plus accrued  interest  thereon at the Mortgage  Interest Rate for
such Mortgage Loan,  through the last day of the month in which such  repurchase
occurs.  Upon the receipt of such  purchase  price,  the Master  Servicer  shall
provide to the  Trustee  the  certification  required  by  Section  3.04 and the
Trustee and the  Custodian,  if any,  shall  promptly  release to the Seller the
Owner Mortgage Loan File relating to the Mortgage Loan being repurchased.

            In the event that (i) the  Master  Servicer  determines  at any time
that,  notwithstanding  the  representations and warranties set forth in Section
2.03(b),  any Mortgage Loan is not a "qualified  mortgage" within the meaning of
Section  860G of the Code and (ii) the Master  Servicer is unable to enforce the
obligation of the Seller to purchase such Mortgage Loan pursuant to Section 2.02
within two months of such  determination,  the Master  Servicer shall cause such
Mortgage  Loan to be auctioned  to the highest  bidder and sold out of the Trust
Estate no later than the date 90 days after such determination.  In the event of
any such sale of a Mortgage Loan, the Trustee shall,  at the written  request of
the Master  Servicer and upon being supported with  appropriate  forms therefor,
within five Business Days of the deposit by the Master  Servicer of the proceeds
of such auction into the Certificate Account, release or cause to be released to
the entity  identified by the Master  Servicer the related  Owner  Mortgage Loan
File and  Servicer  Mortgage  Loan  File and  shall  execute  and  deliver  such
instruments of transfer or assignment,  in each case without recourse,  as shall
be necessary to vest in the auction purchaser title to the Mortgage Loan and the
Trustee shall have no further  responsibility with regard to such Owner Mortgage
Loan File or  Servicer  Mortgage  Loan File.  Neither  the  Trustee,  the Master
Servicer  nor any  Servicer,  acting  on behalf of the  Trustee,  shall  provide
financing from the Trust Estate to any purchaser of a Mortgage Loan.

            The Master Servicer,  on behalf of the Trustee,  shall,  pursuant to
the  Servicing  Agreements,  object to the  foreclosure  upon,  or other related
conversion of the ownership of, any Mortgaged  Property by the related  Servicer
if (i) the Master Servicer believes such Mortgaged  Property may be contaminated
with or  affected  by  hazardous  wastes or  hazardous  substances  or (ii) such
Servicer does not agree to administer such Mortgaged Property,  once the related
Mortgage  Loan becomes an REO Mortgage  Loan, in a manner which would not result
in a federal tax being imposed upon the Trust Estate or the Upper-Tier  REMIC or
Lower-Tier REMIC.

            The Master  Servicer  may enter into a special  servicing  agreement
with an unaffiliated  holder of 100%  Percentage  Interest of a Class of Class B
Certificates or a holder of a class of securities  representing interests in the
Class  B   Certificates   and/or  other   subordinated   mortgage   pass-through
certificates, such agreement to be substantially in the form of Exhibit M hereto
or  subject  to each  Rating  Agency's  acknowledgment  that the  ratings of the
Certificates in effect  immediately prior to the entering into of such agreement
would not be qualified,  downgraded or withdrawn and the Certificates  would not
be placed on credit review status (except for possible upgrading) as a result of
such agreement.  Any such agreement may contain  provisions  whereby such holder
may instruct the Master  Servicer to instruct a Servicer to the extent  provided
in  the  applicable   Servicing  Agreement  to  commence  or  delay  foreclosure
proceedings  with  respect  to  delinquent   Mortgage  Loans  and  will  contain
provisions  for the  deposit of cash by the holder that would be  available  for
distribution to  Certificateholders  if Liquidation  Proceeds are less than they
otherwise  may have been had the Servicer  acted in  accordance  with its normal
procedures.

            SECTION 3.09      TERMINATION  AND   SUBSTITUTION  OF  SERVICING
AGREEMENTS.

            Upon  the  occurrence  of any  event  for  which a  Servicer  may be
terminated  pursuant  to its  Servicing  Agreement,  the Master  Servicer  shall
promptly  deliver  to the  Seller  and  the  Trustee  an  Officer's  Certificate
certifying  that an event has  occurred  which may justify  termination  of such
Servicing  Agreement,  describing the  circumstances  surrounding such event and
recommending  what action  should be taken by the Trustee  with  respect to such
Servicer.  If the Master Servicer  recommends  that such Servicing  Agreement be
terminated,  the Master Servicer's  certification  must state that the breach is
material  and not merely  technical  in nature.  Upon  written  direction of the
Master  Servicer,  based upon such  certification,  the Trustee  shall  promptly
terminate such Servicing Agreement.  Notwithstanding the foregoing, in the event
that (i) Norwest  Mortgage fails to make any advance,  as a consequence of which
the Trustee is  obligated  to make an advance  pursuant to Section 3.03 and (ii)
the Trustee provides Norwest Mortgage written notice of the failure to make such
advance and such failure shall continue unremedied for a period of 15 days after
receipt of such  notice,  the Trustee  shall  terminate  the  Norwest  Servicing
Agreement without the recommendation of the Master Servicer. The Master Servicer
shall  indemnify  the Trustee and hold it harmless  from and against any and all
claims,  liabilities,   costs  and  expenses  (including,   without  limitation,
reasonable  attorneys'  fees) arising out of, or assessed against the Trustee in
connection with termination of such Servicing  Agreement at the direction of the
Master Servicer. If the Trustee terminates such Servicing Agreement, the Trustee
may enter into a substitute  Servicing Agreement with the Master Servicer or, at
the Master  Servicer's  nomination,  with another  mortgage loan service company
acceptable  to the Trustee,  the Master  Servicer  and each Rating  Agency under
which the Master Servicer or such substitute servicer, as the case may be, shall
assume, satisfy, perform and carry out all liabilities, duties, responsibilities
and  obligations  that are to be, or  otherwise  were to have  been,  satisfied,
performed  and  carried out by such  Servicer  under such  terminated  Servicing
Agreement.  Until such time as the Trustee  enters into a  substitute  servicing
agreement  with  respect  to the  Mortgage  Loans  previously  serviced  by such
Servicer, the Master Servicer shall assume,  satisfy,  perform and carry out all
obligations  which otherwise were to have been satisfied,  performed and carried
out by such Servicer under its terminated  Servicing  Agreement.  However, in no
event shall the Master  Servicer be deemed to have assumed the  obligations of a
Servicer to advance payments of principal and interest on a delinquent  Mortgage
Loan in excess of the Master Servicer's  independent Periodic Advance obligation
under Section 3.03 of this Agreement. As compensation for the Master Servicer of
any  servicing  obligations  fulfilled  or assumed by the Master  Servicer,  the
Master  Servicer  shall be entitled  to any  servicing  compensation  to which a
Servicer would have been entitled if the Servicing  Agreement with such Servicer
had not been terminated.

            SECTION 3.10      APPLICATION OF NET LIQUIDATION PROCEEDS.

            For all purposes  under this  agreement,  Net  Liquidation  Proceeds
received from a Servicer shall be allocated first to accrued and unpaid interest
on the related Mortgage Loan and then to the unpaid principal balance thereof.

            SECTION 3.11      ACT REPORTS.

            The Master Servicer shall, on behalf of the Seller, make all filings
required  to be made by the  Seller  with  respect  to the Class A  Certificates
(other than the Class A-PO  Certificates) and the Class B-1, Class B-2 and Class
B-3 Certificates pursuant to the Securities Exchange Act of 1934, as amended.


<PAGE>


                                   ARTICLE IV

                  DISTRIBUTIONS IN RESPECT OF CERTIFICATES;
                         PAYMENTS TO CERTIFICATEHOLDERS;
                             STATEMENTS AND REPORTS

            SECTION 4.01      DISTRIBUTIONS.

            (a) (i) On each Distribution  Date, the Pool  Distribution  Amount
will be applied in the following  amounts,  to the extent the Pool  Distribution
Amount is  sufficient  therefor,  in the manner and in the order of  priority as
follows:

            first, to the Classes of Class A Certificates,  pro rata, based upon
      their respective  Interest  Accrual Amounts,  in an aggregate amount up to
      the sum of the  Class A  Interest  Accrual  Amount  with  respect  to such
      Distribution  Date;  provided  that  prior  to  the  applicable  Accretion
      Termination  Date,  an amount equal to the amount that would  otherwise be
      distributable in respect of interest to each Class of Accrual Certificates
      pursuant to this provision will instead be distributed in reduction of the
      Principal  Balances of certain  Classes of Class A  Certificates,  in each
      case in accordance with Section 4.01(b);

            second, to the Classes of Class A Certificates, pro rata, based upon
      their respective Class A Unpaid Interest Shortfalls,  respectively,  in an
      aggregate  amount up to the sum of the Aggregate  Class A Unpaid  Interest
      Shortfall;  provided that prior to the  applicable  Accretion  Termination
      Date, an amount equal to the amount that would otherwise be  distributable
      in  respect  of  unpaid  interest  shortfalls  to each  Class  of  Accrual
      Certificates  pursuant to this  provision  will instead be  distributed in
      reduction  of the  Principal  Balances  of  certain  Classes  of  Class  A
      Certificates, in each case in accordance with Section 4.01(b);

            third,  concurrently,  to the Class A  Certificates  (other than the
      Class A-PO Certificates) and the Class A-PO Certificates,  pro rata, based
      on their respective Class A Non-PO Optimal Principal Amount and Class A-PO
      Optimal  Principal  Amount,  (A) to the  Classes  of Class A  Certificates
      (other than the Class A-PO Certificates), in an aggregate amount up to the
      Class A Non-PO Optimal Principal Amount, such distribution to be allocated
      among such Classes in accordance with Section 4.01(b) or Section  4.01(c),
      as applicable,  and (B) to the Class A-PO  Certificates in an amount up to
      the Class A-PO Optimal Principal Amount;

            fourth,  to the Class A-PO Certificates in an amount up to the Class
      A-PO Deferred Amount from amounts otherwise  distributable (without regard
      to this Paragraph fourth) first to the Class B-6 Certificates  pursuant to
      Paragraph  twenty-second,  below,  second to the  Class  B-5  Certificates
      pursuant  to  Paragraph   nineteenth,   below,  third  to  the  Class  B-4
      Certificates  pursuant to Paragraph sixteenth,  below, fourth to the Class
      B-3 Certificates  pursuant to Paragraph  thirteenth,  below,  fifth to the
      Class B-2 Certificates pursuant to Paragraph tenth below, and sixth to the
      Class B-1 Certificates pursuant to Paragraph seventh below;

            fifth, to the Class B-1 Certificates in an amount up to the Interest
      Accrual  Amount  for the  Class  B-1  Certificates  with  respect  to such
      Distribution Date;

            sixth,  to  the  Class B-1  Certificates  in an  amount  up to the
      Class B-1 Unpaid Interest Shortfall;

            seventh,  to the Class B-1 Certificates in an amount up to the Class
      B-1  Optimal  Principal  Amount;   provided,   however,  that  the  amount
      distributable  to the Class B-1  Certificates  pursuant to this  Paragraph
      seventh  will be  reduced  by the  amount,  if any,  that  would have been
      distributable  to the Class  B-1  Certificates  hereunder  used to pay the
      Class A-PO Deferred Amount as provided in Paragraph fourth above;

            eighth,  to  the  Class  B-2  Certificates  in an  amount  up to the
      Interest  Accrual  Amount for the Class B-2  Certificates  with respect to
      such Distribution Date;

            ninth,  to  the  Class B-2  Certificates  in an  amount  up to the
      Class B-2 Unpaid Interest Shortfall;

            tenth,  to the Class B-2  Certificates  in an amount up to the Class
      B-2  Optimal  Principal  Amount;   provided,   however,  that  the  amount
      distributable  to the Class B-2  Certificates  pursuant to this  Paragraph
      tenth  will be  reduced  by the  amount,  if any,  that  would  have  been
      distributable  to the Class  B-2  Certificates  hereunder  used to pay the
      Class A-PO Deferred Amount as provided in Paragraph fourth above;

            eleventh,  to the  Class  B-3  Certificates  in an  amount up to the
      Interest  Accrual  Amount for the Class B-3  Certificates  with respect to
      such Distribution Date;

            twelfth,  to the  Class B-3  Certificates  in an  amount up to the
      Class B-3 Unpaid Interest Shortfall;

            thirteenth,  to the  Class B-3  Certificates  in an amount up to the
      Class B-3 Optimal Principal  Amount;  provided,  however,  that the amount
      distributable  to the Class B-3  Certificates  pursuant to this  Paragraph
      thirteenth  will be reduced by the  amount,  if any,  that would have been
      distributable  to the Class  B-3  Certificates  hereunder  used to pay the
      Class A-PO Deferred Amount as provided in Paragraph fourth above;

            fourteenth,  to the  Class B-4  Certificates  in an amount up to the
      Interest  Accrual  Amount for the Class B-4  Certificates  with respect to
      such Distribution Date;

            fifteenth,  to the Class B-4  Certificates  in an amount up to the
      Class B-4 Unpaid Interest Shortfall;

            sixteenth,  to the  Class  B-4  Certificates  in an amount up to the
      Class B-4 Optimal Principal  Amount;  provided,  however,  that the amount
      distributable  to the Class B-4  Certificates  pursuant to this  Paragraph
      sixteenth  will be reduced  by the  amount,  if any,  that would have been
      distributable  to the Class  B-4  Certificates  hereunder  used to pay the
      Class A-PO Deferred Amount as provided in Paragraph fourth above;

            seventeenth,  to the Class B-5  Certificates  in an amount up to the
      Interest  Accrual  Amount for the Class B-5  Certificates  with respect to
      such Distribution Date;

            eighteenth,  to the Class B-5  Certificates in an amount up to the
      Class B-5 Unpaid Interest Shortfall;

            nineteenth,  to the  Class B-5  Certificates  in an amount up to the
      Class B-5 Optimal Principal  Amount;  provided,  however,  that the amount
      distributable  to the Class B-5  Certificates  pursuant to this  Paragraph
      nineteenth  will be reduced by the  amount,  if any,  that would have been
      distributable  to the Class  B-5  Certificates  hereunder  used to pay the
      Class A-PO Deferred Amount as provided in Paragraph fourth above;

            twentieth,  to the  Class  B-6  Certificates  in an amount up to the
      Interest  Accrual  Amount for the Class B-6  Certificates  with respect to
      such Distribution Date;

            twenty-first,  to the  Class B-6  Certificates  in an amount up to
      the Class B-6 Unpaid Interest Shortfall;

            twenty-second,  to the Class B-6 Certificates in an amount up to the
      Class B-6 Optimal Principal  Amount;  provided,  however,  that the amount
      distributable  to the Class B-6  Certificates  pursuant to this  Paragraph
      twenty-second  will be reduced by the amount, if any, that would have been
      distributable  to the Class  B-6  Certificates  hereunder  used to pay the
      Class A-PO Deferred Amount as provided in Paragraph fourth above; and

            twenty-third,  to the  Holder  of the  Class  A-R  Certificate,  any
      amounts remaining in the Upper-Tier Certificate Account, and to the Holder
      of the Class  A-LR  Certificate,  any  amounts  remaining  in the  Payment
      Account.

            Notwithstanding  the  foregoing,  after  the  Principal  Balance  or
notional  amount  of  any  Class  (other  than  the  Class  A-R  or  Class  A-LR
Certificates)  has been  reduced  to zero,  such Class  will be  entitled  to no
further  distributions of principal or interest (including,  without limitation,
any Unpaid Interest Shortfalls).

            In addition,  Net Foreclosure  Profits, if any, with respect to such
Distribution  Date minus any portion thereof  payable to a Servicer  pursuant to
Section  3.02(ix)  hereof shall be  distributed  to the Holder of the Class A-LR
Certificate.

            With respect to any  Distribution  Date, the amount of the Principal
Adjustment,  if any,  attributable to any Class of Class B Certificates  will be
allocated to the Classes of Class A  Certificates  (other than the Class A-6 and
Class  A-PO  Certificates)  and any Class of Class B  Certificates  with a lower
numerical designation pro rata based on their Principal Balances.

         (i) Distributions on the Uncertificated  Lower-Tier Interests.  On each
Distribution  Date,  each  Uncertificated   Lower-Tier  Interest  shall  receive
distributions  in  respect  of  principal  in an amount  equal to the  amount of
principal  distributed  to its  respective  Corresponding  Upper-Tier  Class  or
Classes as provided  herein.  On each  Distribution  Date,  each  Uncertificated
Lower-Tier  Interest  shall receive  distributions  in respect of interest in an
amount equal to the Interest Accrual Amounts and Unpaid Interest Shortfalls,  as
the case may be, in respect of its Corresponding Upper-Tier Class or Classes, in
each case to the extent actually  distributed  thereon. In the case of the Class
A-L12  Interest,  an amount  equal to the  Interest  Accrual  Amounts and Unpaid
Interest Shortfalls of the Accrual Certificates which are added to the Principal
Balances  thereof,  will be added to the  Principal  Balance of the Class  A-L12
Interest. Such amounts distributed to the Uncertificated Lower-Tier Interests in
respect of principal  and interest  with  respect to any  Distribution  Date are
referred to herein collectively as the "Lower-Tier Distribution Amount."

            As of  any  date,  the  principal  balance  of  each  Uncertificated
Lower-Tier   Interest   equals  the   Principal   Balances  of  the   respective
Corresponding Upper-Tier Class or Classes. The initial principal balance of each
Uncertificated Lower-Tier Interest equals the Original Principal Balances of the
respective Corresponding Upper-Tier Class or Classes.

            The pass-through rate with respect to the Class A-L7 Interest, Class
A-L8 Interest, Class A-L12 Interest, Class A-L14 Interest, Class A-LUR Interest,
Class B-L1  Interest,  Class B-L2  Interest,  Class  B-L3  Interest,  Class B-L4
Interest, Class B-L5 Interest and Class B-L6 Interest shall be 6.500% per annum.
The  pass-through  rate with respect to the Class A-L1 Interest  shall be 6.000%
per annum. The pass-through rate for the Class A-L5 Interest shall be 8.000% per
annum. The Class A-LPO Interest is a principal-only interest and is not entitled
to  distributions of interest.  Any  Non-Supported  Interest  Shortfalls will be
allocated  to each  Uncertificated  Lower-Tier  Interest  in the  same  relative
proportions as interest is allocated to such Uncertificated Lower-Tier Interest.

            (b) The Class A-6 Certificates are interest-only  Certificates and
are not entitled to distributions in respect of principal.

            On each  Distribution  Date occurring prior to the Cross-Over  Date,
the Class A Non-PO  Principal  Distribution  Amount will be allocated  among and
distributed  in  reduction of the  Principal  Balances of the Classes of Class A
Certificates  (other than the Principal Balance of the Class A-PO  Certificates)
in accordance with the following priorities:

            I.  On each  Distribution  Date  occurring  prior  to the  Accretion
      Termination Date for the Class A-12 Certificates, the Accrual Distribution
      Amount for the Class A-12 Certificates  will be allocated  sequentially as
      follows:

            first, concurrently,  to the Class A-7, and Class A-10 Certificates,
      pro rata, up to their respective  Reduction  Amounts for such Distribution
      Date;

            second,  concurrently  to the Class A-8 and Class A-9  Certificates,
      pro rata, up to their respective  Reduction  Amounts for such Distribution
      Date; and

            third;  to  the  Class  A-12  Certificates,  until  the  Principal
      Balance thereof has been reduced to zero;

            II.  On each  Distribution  Date  occurring  prior to the  Accretion
      Termination   Date,   for  the  Class  A-13   Certificates,   the  Accrual
      Distribution  Amount for the Class  A-13  Certificates  will be  allocated
      sequentially as follows:

            first,  sequentially,  pursuant to priorities  III. second through
      sixteenth below; and

            second,  to the  Class  A-13  Certificates,  until  the  Principal
      Balance thereof has been reduced to zero;

            III.  The  Class  A  Non-PO   Principal  Amount  will  be  allocated
      sequentially as follows:

            first,  concurrently,  to the Class A-R and Class A-LR Certificates,
      pro rata, until the Principal  Balance of each such Class has been reduced
      to zero,

            second,  concurrently,  25% to the Class A-5 Certificates and 75% to
      the Class A-1  Certificates,  up to their respective PAC Principal Amounts
      for such Distribution Date;

            third,  concurrently,  until the Principal Balance of the Class A-11
      Certificates  has  been  reduced  to  $3,305,000,  25%  to the  Class  A-5
      Certificates  and  75%  to  the  Class  A-11  Certificates,  up  to  their
      respective PAC Principal Amounts for such Distribution Date;

            fourth,   concurrently,   25%  to  the   Class   A-5   Certificates,
      59.7976080957%  to the Class A-2  Certificates and  15.2023919043%  to the
      Class A-11 Certificates,  up to their respective PAC Principal Amounts for
      such Distribution Date;

            fifth,  concurrently,  25% to the Class A-5  Certificates and 75% to
      the Class A-3  Certificates,  up to their respective PAC Principal Amounts
      for such Distribution Date;

            sixth,  concurrently,  25% to the Class A-5  Certificates and 75% to
      the Class A-4  Certificates,  up to their respective PAC Principal Amounts
      for such Distribution Date;

            seventh, concurrently, to the Class A-7 and Class A-10 Certificates,
      pro rata, up to their respective  Reduction  Amounts for such Distribution
      Date;

            eighth,  concurrently,  to the Class A-8 and Class A-9 Certificates,
      pro rata, up to their respective  Reduction  Amounts for such Distribution
      Date;

            ninth, to the Class 12 Certificates,  until the Principal  Balance
      thereof has been reduced to zero;

            tenth,  concurrently,  to the Class A-7 and Class A-10 Certificates,
      pro rata, without regard to their respective Reduction Amounts,  until the
      Principal Balance of each such Class has been reduced to zero;

            eleventh, concurrently, to the Class A-8 and Class A-9 Certificates,
      pro rata, without regard to their respective Reduction Amounts,  until the
      Principal Balance of each such Class has been reduced to zero;

            twelfth,  concurrently, 25% to the Class A-5 Certificates and 75% to
      the  Class  A-1  Certificates,  without  regard  to their  respective  PAC
      Principal   Amounts,   until  the  Principal  Balance  of  the  Class  A-1
      Certificates has been reduced to zero;

            thirteenth,  concurrently,  until the Principal Balance of the Class
      A-11  Certificates  has been reduced to  $3,305,000,  25% to the Class A-5
      Certificates  and 75% to the Class A-11  Certificates,  without  regard to
      their respective PAC Principal Amounts;

            fourteenth,   concurrently,  25%  to  the  Class  A-5  Certificates,
      59.7976080957%  to the Class A-2  Certificates and  15.2023919043%  to the
      Class A-11 Certificates,  without regard to their respective PAC Principal
      Amounts,  until the  Principal  Balances  of the Class A-2 and Class  A-11
      Certificates have been reduced to zero;

            fifteenth,  concurrently,  25% to the Class A-5 Certificates and 75%
      to the Class A-3  Certificates,  without  regard to their  respective  PAC
      Principal   Amounts,   until  the  Principal  Balance  of  the  Class  A-3
      Certificates has been reduced to zero;

            sixteenth;  concurrently,  25% to the Class A-5 Certificates and 75%
      to the Class A-4  Certificates,  without  regard to their  respective  PAC
      Principal Amounts, until the Principal Balance of each such Class has been
      reduced to zero; and

            seventeenth.  concurrently,  to the  Class  A-13  and  Class  A-14
      Certificates,  pro rata, until the Principal  Balance of each such Class
      has been reduced to zero.

            As used above, the "PAC Principal  Amount" for any Distribution Date
and for any Class of PAC  Certificates  means the  amount,  if any,  that  would
reduce the Principal  Balance of such Class to the  percentage of its respective
Original  Principal  Balance shown in the tables set forth below with respect to
such Distribution Date.

            As used above, the "Reduction  Amount" for any Distribution Date and
for any Class of Scheduled  Certificates  means the amount,  if any,  that would
reduce the Principal  Balance of such Class to the  percentage of its respective
Original  Principal  Balance  shown in the  related  table with  respect to such
Distribution Date.

            The  following  tables  set  forth  for each  Distribution  Date the
planned Principal  Balances for each Class of PAC Certificates and the scheduled
Principal  Balances  for each Class of  Scheduled  Certificates,  expressed as a
percentage of the Original Principal Balance of such Class.

<TABLE>
                                                     PLANNED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE

                                                       CLASS A-1 CERTIFICATES


                            PERCENTAGE OF                              PERCENTAGE OF                                PERCENTAGE OF
                              ORIGINAL                                   ORIGINAL                                     ORIGINAL
  DISTRIBUTION DATE       PRINCIPAL BALANCE    DISTRIBUTION DATE     PRINCIPAL BALANCE    DISTRIBUTION DATE      PRINCIPAL BALANCE
  -----------------       -----------------    -----------------     -----------------    -----------------      -----------------
<S>                       <C>                  <C>                   <C>                  <C>                    <C>
Up to and including                            July 2001..........    58.48556790%        October 2001.......     13.88445260%
April 2001...........     100.00000000%        August 2001........    43.93811350%        November 2001
May 2001.............      86.52988040         September 2001.....    29.06071770           and thereafter...      0.00000000
June 2001............      72.68819650
</TABLE>
<PAGE>


<TABLE>
                                                       CLASS A-2 CERTIFICATES

                          PERCENTAGE OF                               PERCENTAGE OF                                PERCENTAGE OF
                           ORIGINAL                                     ORIGINAL                                      ORIGINAL
DISTRIBUTION DATE       PRINCIPAL BALANCE      DISTRIBUTION DATE    PRINCIPAL BALANCE     DISTRIBUTION DATE      PRINCIPAL BALANCE
- -----------------       -----------------      -----------------    -----------------     -----------------      -----------------
<S>                     <C>                    <C>                  <C>                    <C>                   <C>
Up to and Including                             September 2002          66.54139700%        February 2003......     23.02485131%
May 2002............     100.00000000%          October 2002            57.73555046         March 2003.........     14.47352908
June 2002...........     93.27244969            November 2002           48.98133862         April 2003.........      5.97202785
July 2002...........     84.30947385            December 2002           40.27839438         May 2003
August 2002.........     75.39924762            January 2003            31.62635292             and thereafter.      0.00000000
</TABLE>

<PAGE>

<TABLE>
                                                     PLANNED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE

                                                       CLASS A-3 CERTIFICATES


                           PERCENTAGE OF                               PERCENTAGE OF                                PERCENTAGE OF
                             ORIGINAL                                    ORIGINAL                                     ORIGINAL
   DISTRIBUTION DATE     PRINCIPAL BALANCE    DISTRIBUTION DATE    PRINCIPAL BALANCE     DISTRIBUTION DATE      PRINCIPAL BALANCE
   -----------------     -----------------    -----------------    -----------------     -----------------      -----------------
<S>                      <C>                  <C>                  <C>                   <C>                    <C>
Up to and Including                           September 2003          65.90174023%        March 2004.........     19.65443145%
April 2003..........     100.00000000%        October 2003.......     58.08213809         April 2004.........     12.10069992
May 2003............      97.63791448         November 2003           50.30765483         May 2004...........      4.59016362
June 2003...........      89.63454349         December 2003           42.57796501         June 2004
July 2003...........      81.67761265         January 2004.......     34.89274525          and thereafter....      0.00000000
August 2003.........      73.76678866         February 2004......     27.25167393
</TABLE>

<PAGE>

<TABLE>
                                                     PLANNED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE

                                                       CLASS A-4 CERTIFICATES


                           PERCENTAGE OF                               PERCENTAGE OF                                PERCENTAGE OF
                             ORIGINAL                                    ORIGINAL                                     ORIGINAL
   DISTRIBUTION DATE     PRINCIPAL BALANCE    DISTRIBUTION DATE    PRINCIPAL BALANCE     DISTRIBUTION DATE      PRINCIPAL BALANCE
   -----------------     -----------------    -----------------    -----------------     -----------------      -----------------
<S>                      <C>                  <C>                  <C>                   <C>                    <C>
Up to and Including                           December 2004......     62.90578133%        July 2005..........     24.08716974%
May 2004............     100.00000000%        January 2005.......     57.21108396         August 2005........     18.98046593
June 2004...........      97.76299803         February 2005......     51.54854848         September 2005.....     14.01780180
July 2004...........      91.87020449         March 2005.........     45.91793459         October 2005.......      9.19464854
August 2004.........      86.01104428         April 2005.........     40.31900343         November 2005......      4.50661333
September 2004......      80.18526849         May 2005...........     34.75151749         December 2005
October 2004........      74.39262976         June 2005..........     29.34258238           and thereafter...      0.00000000
November 2004.......      68.63288224
</TABLE>

<PAGE>

<TABLE>
                                                     PLANNED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE

                                                       CLASS A-5 CERTIFICATES


                           PERCENTAGE OF                               PERCENTAGE OF                                PERCENTAGE OF
                             ORIGINAL                                    ORIGINAL                                     ORIGINAL
   DISTRIBUTION DATE     PRINCIPAL BALANCE    DISTRIBUTION DATE    PRINCIPAL BALANCE     DISTRIBUTION DATE      PRINCIPAL BALANCE
   -----------------     -----------------    -----------------    -----------------     -----------------      -----------------
<S>                      <C>                  <C>                  <C>                   <C>                    <C>
Up to and Including                           November 2002......     62.49987510%        July 2004..........     26.35310255%
April 2001..........     100.00000000%        December 2002......     60.58858926         August 2004........     24.67239385
May 2001............      98.18569585         January 2003.......     58.68848234         September 2004.....     23.00126156
June 2001...........      96.32134536         February 2003......     56.79947471         October 2004.......     21.33963468
July 2001...........      94.40837886         March 2003.........     54.92148715         November 2004......     19.68744266
August 2001.........      92.44896739         April 2003.........     53.05444096         December 2004......     18.04461540
September 2001......      90.44511581         May 2003...........     51.19825788         January 2005.......     16.41108312
October 2001........      88.40100917         June 2003..........     49.35286015         February 2005......     14.78677655
November 2001.......      86.33692468         July 2003..........     47.51817052         March 2005.........     13.17162672
December 2001.......      84.28509968         August 2003........     45.69411205         April 2005.........     11.56556510
January 2002........      82.24544804         Septembver 2003....     43.88060841         May 2005...........      9.96852364
February 2002.......      80.21788411         October 2003.......     42.07758368         June 2005..........      8.41696266
March 2002..........      78.20232269         November 2003......     40.28496234         July 2005..........      6.90943987
April 2002..........      76.19867925         December 2003......     38.50266935         August 2005........      5.44457443
May 2002............      74.20686957         January 2004.......     36.73063015         September 2005.....      4.02102695
June 2002...........      72.22681013         February 2004......     34.96877061         October 2005.......      2.63749838
July 2002...........      70.25841781         March 2004.........     33.21701701         November 2005......      1.29272862
August 2002.........      68.30160999         April 2004.........     31.47529606         December 2005......
September 2002......      66.35630459         May 2004...........     29.74353499            and thereafter        0.00000000
October 2002........      64.42241999         June 2004..........     28.04345899
</TABLE>

<PAGE>

<TABLE>
                                                     PLANNED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE

                                                       CLASS A-11 CERTIFICATES


                             PERCENTAGE OF                               PERCENTAGE OF                                PERCENTAGE OF
                              ORIGINAL                                    ORIGINAL                                     ORIGINAL
 DISTRIBUTION DATE       PRINCIPAL BALANCE    DISTRIBUTION DATE      PRINCIPAL BALANCE     DISTRIBUTION DATE      PRINCIPAL BALANCE
 -----------------       -----------------    -----------------      -----------------     -----------------      -----------------
<S>                      <C>                  <C>                    <C>                   <C>                    <C>
Up to and Including                           May 2002...........       28.67281143%        December 2002......     10.37730698%
October 2001........       100.00000000%      June 2002..........       24.03067088         January 2003.......      8.14819894
November 2001.......        98.87734916       July 2002..........       21.72145393         February 2003......      5.93211210
December 2001.......        87.00210017       August 2002........       19.42582733         March 2003.........      3.72895338
January 2002........        75.19730628       September 2002.....       17.14369481         April 2003.........      1.53863050
February 2002.......        63.46247170       October 2002.......       14.87496056         May 2003...........
March 2002..........        51.79710376       November 2002......       12.61952947            and thereafter..      0.00000000
April 2002..........        40.20071258
</TABLE>

<PAGE>

<TABLE>
                                                    SCHEDULED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE

                                                CLASS A-7 AND CLASS A-10 CERTIFICATES

                           PERCENTAGE OF                                PERCENTAGE OF                               PERCENTAGE OF
                             ORIGINAL                                      ORIGINAL                                   ORIGINAL
 DISTRIBUTION DATE      PRINCIPAL BALANCE      DISTRIBUTION DATE     PRINCIPAL BALANCE    DISTRIBUTION DATE     PRINCIPAL BALANCE
 -----------------      -----------------      -----------------     -----------------    -----------------     -----------------
<S>                     <C>                   <C>                    <C>                  <C>                   <C>
June 1999...........      99.65563553%        May 2003...........       62.55389760%       April 2007.........      35.79951304%
July 1999...........      99.24525417         June 2003..........       62.13140183        May 2007...........      34.82214511
August 1999.........      98.76905690         July 2003..........       61.71819107        June 2007..........      33.86618972
September 1999......      98.22718206         August 2003........       61.31413227        July 2007..........      32.91885629
October 1999........      97.61983462         September 2003.....       60.91909392        August 2007........      31.98003828
November 1999.......      96.94728635         October 2003.......       60.53294610        September 2007.....      31.04963026
December 1999.......      96.20987573         November 2003......       60.15556052        October 2007.......      30.12752784
January 2000........      95.40800789         December 2003......       59.78681042        November 2007......      29.21362768
February 2000.......      94.54215442         January 2004.......       59.42657051        December 2007......      28.30782753
March 2000..........      93.61285288         February 2004......       59.07471711        January 2008.......      27.41002615
April 2000..........      92.62070651         March 2004.........       58.73112802        February 2008......      26.52012337
May 2000............      91.56638350         April 2004.........       58.39568249        March 2008.........      25.63801998
June 2000...........      90.45061638         May 2004...........       58.06826127        April 2008.........      24.76361781
July 2000...........      89.27420127         June 2004..........       57.75800504        May 2008...........      23.89681971
August 2000.........      88.03799679         July 2004..........       57.45546965        June 2008..........      23.04855275
September 2000......      86.74292325         August 2004........       57.16054029        July 2008..........      22.20744990
October 2000........      85.38996136         September 2004.....       56.87310355        August 2008........      21.37342070
November 2000.......      83.98020676         October 2004.......       56.59304741        September 2008.....      20.54637553
December 2000.......      82.51475548         November 2004......       56.32026120        October 2008.......      19.72622574
January 2001........      80.99481331         December 2004......       56.05463564        November 2008......      18.91288350
February 2001.......      79.42164097         January 2005.......       55.79606273        December 2008......      18.10626188
March 2001..........      77.79655975         February 2005......       55.54443586        January 2009.......      17.30627478
April 2001..........      76.12092775         March 2005.........       55.29964967        February 2009......      16.51283704
May 2001............      75.55627636         April 2005.........       55.06160011        March 2009.........      15.72586420
June 2001...........      74.97685921         May 2005...........       54.83018441        April 2009.........      14.94527279
July 2001...........      74.38363894         June 2005..........       54.58928047        May 2009...........      14.17098007
August 2001.........      73.77798364         July 2005..........       54.33226576        June 2009..........      13.40290414
September 2001......      73.16091953         August 2005........       54.05988140        July 2009..........      12.64096389
October 2001........      72.53491573         September 2005.....       53.77284339        August 2009........      11.88507903
November 2001.......      71.90843327         October 2005.......       53.47184353        September 2009.....      11.13517003
December 2001.......      71.29409654         November 2005......       53.15755006        October 2009.......      10.39115824
January 2002........      70.69173810         December 2005......       52.82133758        November 2009......       9.65296560
February 2002.......      70.10119247         January 2006.......       51.67005711        December 2009......       8.92051501
March 2002..........      69.52229618         February 2006......       50.52985365        January 2010.......       8.19372997
April 2002..........      68.95488771         March 2006.........       49.40059562        February 2010......       7.47253480
May 2002............      68.39880744         April 2006.........       48.28215275        March 2010.........       6.75685458
June 2002...........      67.85389769         May 2006...........       47.17439618        April 2010.........       6.04661503
July 2002...........      67.32000269         June 2006..........       46.09089338        May 2010...........       5.34174267
August 2002.........      66.79696847         July 2006..........       45.01763812        June 2010..........       4.64216472
September 2002......      66.28464303         August 2006........       43.95450687        July 2010..........       3.94780908
October 2002........      65.78287605         September 2006.....       42.90137738        August 2010........       3.25860436
November 2002.......      65.29151912         October 2006.......       41.85812868        September 2010.....       2.57447986
December 2002.......      64.81042554         November 2006......       40.82464104        October 2010.......       1.89536556
January 2003........      64.33945046         December 2006......       39.80079593        November 2010......       1.22119211
February 2003.......      63.87845069         January 2007.......       38.78647609        December 2010......       0.55189085
March 2003..........      63.42728484         February 2007......       37.78156538        January 2011.......
April 2003..........      62.98581315         March 2007.........       36.78594895           and thereafter..       0.00000000
</TABLE>

<PAGE>

<TABLE>
                                                    SCHEDULED PRINCIPAL BALANCES
                                            AS PERCENTAGES OF ORIGINAL PRINCIPAL BALANCE


                                                CLASS A-8 AND CLASS A-9 CERTIFICATES



                           PERCENTAGE OF                               PERCENTAGE OF                                PERCENTAGE OF
                             ORIGINAL                                    ORIGINAL                                     ORIGINAL
   DISTRIBUTION DATE     PRINCIPAL BALANCE    DISTRIBUTION DATE    PRINCIPAL BALANCE     DISTRIBUTION DATE      PRINCIPAL BALANCE
   -----------------     -----------------    -----------------    -----------------     -----------------      -----------------
<S>                      <C>                  <C>                  <C>                   <C>                    <C>
Up to and Including                           March 2011.........     71.86594884%        July 2011..........     21.11526088%
December 2010.......     100.00000000%        April 2011.........     59.04537567         August 2011........      8.64487121
January 2011........      97.78061950         May 2011...........     46.31425325         September 2011.....
February 2011             84.77726241         June 2011..........     33.67130364         and thereafter.....      0.00000000
</TABLE>

<PAGE>


            (c) Notwithstanding  the  foregoing,  on  each  Distribution  Date
occurring on or subsequent to the Cross-Over  Date, the Class A Non-PO Principal
Distribution   Amount  shall  be  distributed  among  the  Classes  of  Class  A
Certificates  (other than the Class A-PO  Certificates)  pro rata in  accordance
with  their  outstanding   Principal  Balances  without  regard  to  either  the
proportions or the priorities set forth in Section 4.01(b).

            (d)  (i) For purposes of determining  whether the Classes of Class
B Certificates  are eligible to receive  distributions of principal with respect
to any Distribution Date, the following tests shall apply:

                  (A) if the Current Class B-1 Fractional  Interest is less than
            the  Original  Class  B-1  Fractional  Interest  and the  Class  B-1
            Principal  Balance is greater than zero,  the Class B-2,  Class B-3,
            Class  B-4,  Class  B-5 and  Class  B-6  Certificates  shall  not be
            eligible to receive distributions of principal; or

                  (B) if the Current Class B-2 Fractional  Interest is less than
            the  Original  Class  B-2  Fractional  Interest  and the  Class  B-2
            Principal  Balance is greater than zero,  the Class B-3,  Class B-4,
            Class B-5 and  Class  B-6  Certificates  shall  not be  eligible  to
            receive distributions of principal; or

                  (C) if the Current Class B-3 Fractional  Interest is less than
            the  Original  Class  B-3  Fractional  Interest  and the  Class  B-3
            Principal Balance is greater than zero, the Class B-4, Class B-5 and
            Class  B-6   Certificates   shall  not  be   eligible   to   receive
            distributions of principal; or

                  (D) if the Current Class B-4 Fractional  Interest is less than
            the  Original  Class  B-4  Fractional  Interest  and the  Class  B-4
            Principal  Balance is greater than zero, the Class B-5 and Class B-6
            Certificates  shall not be  eligible  to  receive  distributions  of
            principal; or

                  (E) if the Current Class B-5 Fractional  Interest is less than
            the  Original  Class  B-5  Fractional  Interest  and the  Class  B-5
            Principal  Balance is greater than zero, the Class B-6  Certificates
            shall not be eligible to receive distributions of principal.

               (ii)  Notwithstanding the foregoing,  if on any Distribution Date
the aggregate  distributions  to Holders of the Classes of Class B  Certificates
entitled  to receive  distributions  of  principal  would  reduce the  Principal
Balances   of  the  Classes  of  Class  B   Certificates   entitled  to  receive
distributions of principal below zero,  first the Class B Prepayment  Percentage
of any  affected  Class  of Class B  Certificates  for  such  Distribution  Date
beginning with the affected Class with the lowest  numerical  Class  designation
and then,  if  necessary,  the Class B  Percentage  of such Class of the Class B
Certificates  for such  Distribution  Date shall be  reduced  to the  respective
percentages  necessary to bring the  Principal  Balance of such Class of Class B
Certificates  to  zero.  The  Class B  Prepayment  Percentages  and the  Class B
Percentages of the remaining  Classes of Class B Certificates will be recomputed
substituting  for  the  Subordinated   Prepayment  Percentage  and  Subordinated
Percentage in such  computations  the  difference  between (A) the  Subordinated
Prepayment  Percentage or Subordinated  Percentage,  as the case may be, and (B)
the percentages  determined in accordance with the preceding  sentence necessary
to bring the Principal  Balances of the affected Classes of Class B Certificates
to zero; provided, however, that if the Principal Balances of all the Classes of
Class B Certificates  eligible to receive  distributions  of principal  shall be
reduced to zero on such Distribution Date, the Class B Prepayment Percentage and
the Class B  Percentage  of the Class of Class B  Certificates  with the  lowest
numerical  Class  designation  which would  otherwise be  ineligible  to receive
distributions  of principal  in  accordance  with this  Section  shall equal the
remainder of the Subordinated  Prepayment  Percentage for such Distribution Date
minus the sum of the Class B  Prepayment  Percentages  of the Classes of Class B
Certificates  having  lower  numerical  Class  designations,  if  any,  and  the
remainder of the Subordinated  Percentage for such  Distribution  Date minus the
sum of the Class B  Percentages  of the Classes of Class B  Certificates  having
lower numerical Class designations, if any, respectively. Any entitlement of any
Class of Class B  Certificates  to principal  payments  solely  pursuant to this
clause  (ii) shall not cause  such Class to be  regarded  as being  eligible  to
receive  principal  distributions  for the purpose of applying the definition of
its Class B Percentage or Class B Prepayment Percentage.

            (e) The  Trustee  shall  establish  and  maintain  the  Upper-Tier
Certificate  Account,  which shall be a separate  trust  account and an Eligible
Account.  On each Distribution  Date other than the Final  Distribution Date (if
such Final  Distribution  Date is in connection with a purchase of the assets of
the Trust Estate by the Seller), the Paying Agent shall, on behalf of the Master
Servicer,  from funds available on deposit in the Payment Account,  (i) deposit,
in  immediately  available  funds,  by wire  transfer  or  otherwise,  into  the
Upper-Tier  Certificate  Account  the  Lower-Tier  Distribution  Amount and (ii)
distribute  to the Class  A-LR  Certificateholder  (other  than as  provided  in
Section 9.01 respecting the final distribution to  Certificateholders)  by check
mailed to such Holder at the address of such Holder appearing in the Certificate
Register,  the Class A  Distribution  Amount  with  respect  to the  Class  A-LR
Certificate and all other amounts  distributable to the Class A-LR  Certificate.
The Trustee may clear and terminate the Upper-Tier  Certificate Account pursuant
to Section 9.01.

            (f) On each  Distribution  Date other than the Final  Distribution
Date (if such Final  Distribution  Date is in connection  with a purchase of the
assets of the Trust Estate by the Seller),  the Paying Agent shall, on behalf of
the  Master  Servicer,  from  funds  remitted  to it  by  the  Master  Servicer,
distribute  to each  Certificateholder  of record  (other  than the  Class  A-LR
Certificateholder)  on the  preceding  Record  Date  (other  than as provided in
Section 9.01 respecting the final distribution to  Certificateholders  or in the
last  paragraph of this Section  4.01(f)  respecting the final  distribution  in
respect of any Class) either in immediately  available funds by wire transfer to
the  account  of  such  Certificateholder  at a  bank  or  other  entity  having
appropriate  facilities therefor, if such  Certificateholder  holds Certificates
having a Denomination at least equal to that specified in Section 11.23, and has
so notified  the Master  Servicer or, if  applicable,  the Paying Agent at least
seven  Business  Days prior to the  Distribution  Date or, if such Holder  holds
Certificates  having,  in the aggregate,  a Denomination less than the requisite
minimum  Denomination  or if such Holder holds the Class A-R  Certificate or has
not so notified the Paying Agent,  by check mailed to such Holder at the address
of such Holder appearing in the Certificate Register, such Holder's share of the
Class A  Distribution  Amount with respect to each Class of Class A Certificates
and the Class B  Distribution  Amount with respect to each such Class of Class B
Certificates.

            In the  event  that,  on any  Distribution  Date  prior to the Final
Distribution  Date,  the Principal  Balance of any Class of Class A Certificates
(other  than the  Class  A-6,  Class  A-R or  Class  A-LR  Certificates)  or the
Principal Balance of any Class of Class B Certificates  would be reduced to zero
or, in the case of the Class A-6  Certificates,  the Class A-6  Notional  Amount
would be reduced to zero,  the Master  Servicer  shall,  as soon as  practicable
after the Determination  Date relating to such Distribution  Date, send a notice
to the Trustee. The Trustee will then send a notice to each Certificateholder of
such Class with a copy to the Certificate  Registrar,  specifying that the final
distribution  with respect to such Class will be made on such  Distribution Date
only  upon  the   presentation   and   surrender  of  such   Certificateholder's
Certificates at the office or agency of the Trustee therein specified; provided,
however,   that  the   failure  to  give  such   notice   will  not   entitle  a
Certificateholder  to any interest  beyond the interest  payable with respect to
such Distribution Date in accordance with Section 4.01(a)(i).

            (g) The  Paying  Agent (or if no Paying  Agent is appointed by the
Master  Servicer,  the Master  Servicer)  shall withhold or cause to be withheld
such  amounts  as may be  required  by  the  Code  (giving  full  effect  to any
exemptions from withholding and related certifications  required to be furnished
by  Certificateholders  and any  reductions  to  withholding  by  virtue  of any
bilateral tax treaties and any applicable certification required to be furnished
by  Certificateholders  with respect  thereto) from  distributions to be made to
Persons other than U.S. Persons ("Non-U.S.  Persons"). Amounts withheld pursuant
to this  Section  4.01(g)  shall be treated as having  been  distributed  to the
related  Certificateholder for all purposes of this Agreement.  For the purposes
of this  paragraph,  a "U.S.  Person"  is a citizen  or  resident  of the United
States,  a corporation  or  partnership  (unless,  in the case of a partnership,
Treasury  regulations are adopted that provide otherwise),  created or organized
in or under the laws of the United States,  any state thereof or the District of
Columbia,  including  an entity  treated as a  corporation  or  partnership  for
federal income tax purposes,  an estate whose income is subject to United States
federal  income tax  regardless of its source,  or a trust if a court within the
United States is able to exercise primary supervision over the administration of
such trust,  and one or more such U.S. Persons have the authority to control all
substantial  decisions of such trust (or, to the extent  provided in  applicable
Treasury  regulations,  certain trusts in existence on August 20, 1996 which are
eligible to elect to be treated as U.S. Persons).

            SECTION 4.02      ALLOCATION OF REALIZED LOSSES.

            (a) With  respect to any Distribution  Date, the principal portion
of Realized  Losses (other than Debt Service  Reductions,  Excess Special Hazard
Losses,  Excess Fraud Losses and Excess Bankruptcy  Losses) will be allocated as
follows:

      first,  to the  Class B-6  Certificates  until the  Class B-6  Principal
      Balance has been reduced to zero;

      second,  to the Class B-5  Certificates  until the  Class B-5  Principal
      Balance has been reduced to zero;

      third,  to the  Class B-4  Certificates  until the  Class B-4  Principal
      Balance has been reduced to zero;

      fourth,  to the Class B-3  Certificates  until the  Class B-3  Principal
      Balance has been reduced to zero;

      fifth,  to the  Class B-2  Certificates  until the  Class B-2  Principal
      Balance has been reduced to zero;

      sixth,  to the  Class B-1  Certificates  until the  Class B-1  Principal
      Balance has been reduced to zero; and

      seventh,  concurrently,  to the Class A Certificates (other than the Class
      A-PO  Certificates)  and Class A-PO  Certificates,  pro rata, based on the
      Non-PO Fraction and the PO Fraction, respectively.

            This  allocation  of Realized  Losses  will be effected  through the
reduction of the applicable Class's Principal Balance.

            (b) With  respect to any Distribution  Date, the principal portion
of Excess  Special  Hazard  Losses,  Excess Fraud  Losses and Excess  Bankruptcy
Losses  occurring  with respect to any Mortgage Loan allocable to the Class A-PO
Certificates will equal the product of the amount of any such principal loss and
the PO Fraction for such  Mortgage  Loan.  The  principal  portion of any Excess
Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess  Bankruptcy  Losses
remaining after allocation to the Class A-PO Certificates in accordance with the
preceding  sentence  shall be allocated pro rata among the Class A  Certificates
(other than the Class A-PO  Certificates) and Class B Certificates  based on the
Class  A  Non-PO   Principal   Balance  and  the  Class  B  Principal   Balance,
respectively.  Any such  loss  allocated  to the Class A  Certificates  shall be
allocated on the subsequent  Determination Date among the outstanding Classes of
Class A Certificates (other than the Class A-PO Certificates) in accordance with
the  Class A Loss  Percentages  as of such  Determination  Date.  Any such  loss
allocated  to the Class B  Certificates  shall be  allocated  pro rata among the
outstanding Classes of Class B Certificates based on their Principal Balances.

            (c) Any   Realized  Losses   allocated  to  a  Class  of  Class  A
Certificates  or Class B  Certificates  pursuant  to Section  4.02(a) or Section
4.02(b) shall be allocated  among the  Certificates of such Class based on their
Percentage Interests.

            (d) In  the event that there is a Recovery of an amount in respect
of  principal  of a  Mortgage  Loan which had  previously  been  allocated  as a
Realized Loss to any Classes of Class A  Certificates  or any Classes of Class B
Certificates,  each outstanding Class to which such Realized Loss had previously
been  allocated  shall be entitled to its share (with  respect to the Class A-PO
Certificates,  based on the PO Fraction of such  Mortgage Loan and, with respect
to the Class A Certificates (other than the Class A-PO Certificates) and Class B
Certificates,  based on their  pro rata  share of the  Non-PO  Fraction  of such
Mortgage  Loan)  of  such  Recovery  up to the  amount  of  such  Realized  Loss
previously  allocated  to such  Class  on the  Distribution  Date  in the  month
following  the month in which such  recovery  is  received.  When the  Principal
Balance of a Class of  Certificates  has been reduced to zero,  such Class shall
not be entitled to any share of such  Recovery.  In the event that the amount of
such Recovery exceeds the amount of such Recovery  allocated to each outstanding
Class in accordance with the preceding provisions,  each outstanding Class shall
be entitled to its pro rata share (determined as described above) of such excess
up to the amount of any unrecovered  Realized Loss previously  allocated to such
Class.  Notwithstanding the foregoing  provisions,  but subject to the following
proviso,  if such Recovery  occurs within two years of the  realization  of such
loss and (i) is the  result  of an  event  that  would  have  given  rise to the
repurchase of the related  Mortgage Loan by the Seller  pursuant to Section 2.02
or 2.03, or (ii) represents in whole or part funds which the applicable Servicer
had  received  in  respect  of a  Liquidated  Loan  but  failed  to remit to the
Certificate  Account on or prior to the Business Day preceding the  Distribution
Date following the Applicable  Unscheduled Principal Receipt Period in which the
Mortgage  Loan  became  a  Liquidated  Loan,  such  Recovery  may,  at the  sole
discretion of the Master Servicer,  be treated as a repurchase or an Unscheduled
Principal  Receipt with respect to such  Mortgage  Loan, as the case may be, the
Realized  Loss  previously  recognized  may be  reversed  and  treated  for  all
subsequent purposes as if it had never occurred and the Master Servicer may make
such adjustments to interest or principal  distributions on the Certificates and
to the principal balances of the Certificates as the Master Servicer in its good
faith judgment and sole  discretion  deems  necessary or desirable to effectuate
the  reversal  of the  Realized  Loss  and the  treatment  of such  amount  as a
repurchase or as an Unscheduled  Principal Receipt, as the case may be; provided
that such actions do not result in the aggregate  distributions  made in respect
of each Class of Certificates  whose principal  balances were previously reduced
as a result of such Realized Loss being less than such Class would have received
if such Recovery had been  deposited in the  Certificate  Account on or prior to
the Business Day  preceding  the  Distribution  Date  following  the  Applicable
Unscheduled  Principal  Receipt  Period  in which  the  Mortgage  Loan  became a
Liquidated Loan.

            (e) The  interest portion of Excess Special Hazard Losses,  Excess
Fraud Losses and Excess  Bankruptcy  Losses  shall be allocated  between (i) the
Class A Certificates  and (ii) the Class B  Certificates,  pro rata based on the
Class A Interest  Accrual Amount and the Class B Interest Accrual Amount for the
related  Distribution  Date,  without  regard to any reduction  pursuant to this
sentence. Any such loss allocated to the Class A Certificates shall be allocated
among the  outstanding  Classes of Class A  Certificates  based on their Class A
Interest  Percentages.  Any such loss allocated to the Class B Certificates will
be allocated  among the  outstanding  Classes of Class B  Certificates  based on
their Class B Interest  Percentages.  In  addition,  after the Class B Principal
Balance has been reduced to zero, the interest portion of Realized Losses (other
than Excess  Special Hazard  Losses,  Excess Fraud Losses and Excess  Bankruptcy
Losses) will be allocated among the outstanding  Classes of Class A Certificates
based on their Class A Interest Percentages.

            (f) Realized Losses allocated in accordance with this Section 4.02
will be allocated on the  Determination  Date in the second month  following the
month in which such loss was incurred with respect to the preceding Distribution
Date.

            (g) With  respect to any Distribution  Date, the principal portion
of Realized Losses and recoveries  attributable to previously allocated Realized
Losses  allocated  pursuant  to this  Section  4.02  will be  allocated  to each
Uncertificated Lower-Tier Interest in an amount equal to the amount allocated to
its respective Corresponding Upper-Tier Class or Classes as provided above.

            (h) With respect to any Distribution Date, the interest portion of
Realized  Losses  allocated  pursuant to this  Section 4.02 will be allocated to
each  Uncertificated  Lower-Tier  Interest in the same relative  proportions  as
interest is allocated to such Uncertificated Lower-Tier Interest.

            SECTION 4.03      PAYING AGENT.

            (a) The  Master  Servicer  hereby  appoints the Trustee as initial
Paying  Agent to make  distributions  to  Certificateholders  and to  forward to
Certificateholders the periodic statements and the annual statements required by
Section 4.04 as agent of the Master Servicer.

            The Master  Servicer may, at any time,  remove or replace the Paying
Agent.

            The Master  Servicer  shall  cause any Paying  Agent that is not the
Trustee to execute and deliver to the Trustee an instrument in which such Paying
Agent agrees with the Trustee that such Paying Agent shall:

               (i) hold all amounts  remitted  to it by the Master Servicer  for
      distribution   to   Certificateholders   in  trust  for  the   benefit  of
      Certificateholders    until    such    amounts    are    distributed    to
      Certificateholders or otherwise disposed of as herein provided;

               (ii)     give the  Trustee  notice of any default by the Master
      Servicer in remitting any required amount; and

               (iii) at any time  during the  continuance  of any such  default,
      upon the written request of the Trustee,  forthwith pay to the Trustee all
      amounts held in trust by such Paying Agent.

            (b) The  Paying  Agent  shall  establish  and  maintain  a Payment
Account,  which shall be a separate  trust account and an Eligible  Account,  in
which  the  Master  Servicer  shall  cause  to be  deposited  from  funds in the
Certificate Account or, to the extent required hereunder, from its own funds (i)
at or before  10:00 a.m.,  New York time,  on the Business  Day  preceding  each
Distribution Date, by wire transfer of immediately available funds, any Periodic
Advance for such  Distribution  Date,  pursuant  to Section  3.03 and (ii) at or
before  10:00  a.m.,   New  York  time,  on  the  Business  Day  preceding  each
Distribution  Date,  by wire transfer of  immediately  available  funds,  (a) an
amount equal to the Pool Distribution  Amount, (b) Net Foreclosure  Profits,  if
any, with respect to such  Distribution  Date and (c) the amount of any recovery
in respect of a Realized Loss. The Master Servicer may cause the Paying Agent to
invest  the  funds  in the  Payment  Account.  Any such  investment  shall be in
Eligible  Investments,  which  shall  mature  not later  than the  Business  Day
preceding the related  Distribution  Date (unless the Eligible  Investments  are
obligations of the Trustee, in which case such Eligible Investments shall mature
not later than the  Distribution  Date),  and shall not be sold or  disposed  of
prior to maturity.  All income and gain realized from any such investment  shall
be for the benefit of the Master Servicer and shall be subject to its withdrawal
or order from time to time. The amount of any losses  incurred in respect of any
such  investments  shall be  deposited  in the  Payment  Account  by the  Master
Servicer  out of its own funds  immediately  as  realized.  The Paying Agent may
withdraw from the Payment  Account any amount  deposited in the Payment  Account
that was not required to be deposited  therein and may clear and  terminate  the
Payment Account pursuant to Section 9.01.

            SECTION 4.04      STATEMENTS TO CERTIFICATEHOLDERS; REPORT TO THE
TRUSTEE AND THE SELLER.

            Concurrently with each distribution pursuant to Section 4.01(f), the
Master  Servicer,  or the Paying Agent  appointed by the Master  Servicer  (upon
receipt of such statement from the Master  Servicer),  shall forward or cause to
be forwarded by mail to each Holder of a Certificate  and the Seller a statement
setting forth:

               (i) the  amount of such  distribution to Holders of each Class of
      Class A Certificates  allocable to principal,  separately  identifying the
      aggregate amount of any Unscheduled Principal Receipts included therein;

               (ii) (a) the amount of such distribution to Holders of each Class
      of Class A  Certificates  allocable  to  interest,  (b) the  amount of the
      Current Class A Interest  Distribution  Amount  allocated to each Class of
      Class A Certificates,  (c) any Class A Interest  Shortfall Amounts arising
      with respect to such  Distribution  Date and any remaining  Class A Unpaid
      Interest  Shortfall with respect to each Class after giving effect to such
      distribution,  (d) the  amount  of any  Non-Supported  Interest  Shortfall
      allocated to each Class of Class A Certificates for such Distribution Date
      and (e) the interest portion of Excess Special Hazard Losses, Excess Fraud
      Losses  and  Excess  Bankruptcy  Losses  allocated  to each Class for such
      Distribution Date;

               (iii) the amount of such distribution to Holders of each Class of
      Class B Certificates  allocable to principal,  separately  identifying the
      aggregate amount of any Unscheduled Principal Receipts included therein;

               (iv) (a) the amount of such distribution to Holders of each Class
      of Class B  Certificates  allocable  to  interest,  (b) the  amount of the
      Current Class B Interest  Distribution  Amount  allocated to each Class of
      Class B Certificates,  (c) any Class B Interest  Shortfall Amounts arising
      with respect to such  Distribution  Date and any remaining  Class B Unpaid
      Interest  Shortfall  with respect to each Class B of Class B  Certificates
      after  giving  effect  to  such  distribution,   (d)  the  amount  of  any
      Non-Supported  Interest  Shortfall  allocated  to each  Class  of  Class B
      Certificates for such  Distribution  Date, and (e) the interest portion of
      Excess Special Hazard  Losses,  Excess Fraud Losses and Excess  Bankruptcy
      Losses   allocated  to  each  Class  of  Class  B  Certificates  for  such
      Distribution Date;

               (v) the  amount of any  Periodic  Advance by any  Servicer,  the
      Master Servicer or the Trustee  pursuant to the Servicing  Agreements or
      this Agreement;

               (vi)     the number of  Mortgage  Loans  outstanding  as of the
      preceding Determination Date;

               (vii) the Class A Principal  Balance,  the  Principal  Balance of
      each Class of Class A Certificates,  the Class B Principal Balance and the
      Principal  Balance  of  each  Class  of  Class  B  Certificates  as of the
      following  Determination  Date after giving effect to the distributions of
      principal  made,  and the principal  portion of Realized  Losses,  if any,
      allocated with respect to such Distribution Date;

               (viii) the  Adjusted  Pool Amount,  the Adjusted  Pool Amount (PO
      Portion),  the Pool Scheduled  Principal Balance of the Mortgage Loans for
      such  Distribution Date and the aggregate  Scheduled  Principal Balance of
      the Discount Mortgage Loans for such Distribution Date;

               (ix) the aggregate  Scheduled  Principal Balances of the Mortgage
      Loans  serviced  by  Norwest  Mortgage  and,  collectively,  by the  Other
      Servicers as of such Distribution Date;

               (x) the Class A Percentage  for the following  Distribution  Date
      (without giving effect to Unscheduled  Principal  Receipts  received after
      the  Applicable  Unscheduled  Principal  Receipt  Period  for the  current
      Distribution  Date which are applied by a Servicer  during such Applicable
      Unscheduled Principal Receipt Period);

               (xi)  the  Class  A  Prepayment   Percentage  for  the  following
      Distribution Date (without giving effect to Unscheduled Principal Receipts
      received after the Applicable Unscheduled Principal Receipt Period for the
      current  Distribution  Date which are  applied by a Servicer  during  such
      Applicable Unscheduled Principal Receipt Period);

               (xii) the Class B-1,  Class B-2,  Class B-3, Class B-4, Class B-5
      and Class B-6  Percentages  for the following  Distribution  Date (without
      giving  effect  to  Unscheduled  Principal  Receipts  received  after  the
      Applicable   Unscheduled   Principal   Receipt   Period  for  the  current
      Distribution  Date which are applied by a Servicer  during such Applicable
      Unscheduled Principal Receipt Period);

               (xiii) the Class B-1,  Class B-2, Class B-3, Class B-4, Class B-5
      and Class B-6 Prepayment  Percentages for the following  Distribution Date
      (without giving effect to Unscheduled  Principal  Receipts  received after
      the  Applicable  Unscheduled  Principal  Receipt  Period  for the  current
      Distribution  Date which are applied by a Servicer  during such Applicable
      Unscheduled Principal Receipt Period);

               (xiv) the number and  aggregate  principal  balances  of Mortgage
      Loans  delinquent  (a) one month,  (b) two months and (c) three  months or
      more;

               (xv) the number and aggregate  principal balances of the Mortgage
      Loans in foreclosure as of the preceding Determination Date;

               (xvi)  the  book  value  of  any  real  estate  acquired  through
      foreclosure or grant of a deed in lieu of foreclosure;

               (xvii) the amount of the  remaining  Special  Hazard Loss Amount,
      Fraud Loss Amount and  Bankruptcy  Loss Amount as of the close of business
      on such Distribution Date;

               (xviii) the  principal and interest  portions of Realized  Losses
      allocated  as of such  Distribution  Date and the amount of such  Realized
      Losses constituting Excess Special Hazard Losses, Excess Fraud
      Losses or Excess Bankruptcy Losses;

               (xix) the aggregate amount of Bankruptcy Losses allocated to each
      Class of Class B Certificates in accordance with Section 4.02(a) since the
      Relevant Anniversary;

               (xx) the amount by which the  Principal  Balance of each Class of
      Class B  Certificates  has been  reduced  as a result of  Realized  Losses
      allocated as of such Distribution Date;

               (xxi) the unpaid  principal  balance of any  Mortgage  Loan as to
      which the Servicer of such Mortgage Loan has  determined  not to foreclose
      because it believes the related  Mortgaged  Property  may be  contaminated
      with or affected by hazardous wastes or hazardous substances;

               (xxii)  the  amount of the  aggregate  Servicing  Fees and Master
      Servicing  Fees paid (and not  previously  reported)  with  respect to the
      related  Distribution Date and the amount by which the aggregate Available
      Master Servicer  Compensation has been reduced by the Prepayment  Interest
      Shortfall for the related Distribution Date;

               (xxiii) in the case of the Class A-6 Certificates,  the Class A-6
      Notional Amount, if any;

               (xxiv)  in the  case of each  Class of  LIBOR  Certificates,  the
      applicable Class A Pass-Through Rate;

               (xxv)    the Class A-PO Deferred Amount, if any; and

               (xxvi) such other  customary  information as the Master  Servicer
      deems necessary or desirable to enable Certificateholders to prepare their
      tax returns;

and shall  deliver a copy of each type of statement  to the  Trustee,  who shall
provide  copies  thereof to  Persons  making  written  request  therefor  at the
Corporate Trust Office.

            In the case of  information  furnished  with  respect  to a Class of
Class A Certificates  pursuant to clauses (i) and (ii) above and with respect to
a Class of Class B  Certificates  pursuant to clauses (iii) and (iv) above,  the
amounts shall be expressed as a dollar amount per Class A or Class B Certificate
(other  than  the  Class  A-R  and  Class  A-LR   Certificates)  with  a  $1,000
Denomination,  and as a dollar amount per Class A-R and Class A-LR  Certificates
with a $100 Denomination.

            Within a  reasonable  period of time after the end of each  calendar
year, the Master  Servicer shall furnish or cause to be furnished to each Person
who at any time  during  the  calendar  year was the Holder of a  Certificate  a
statement  containing the information set forth in clauses (i) and (ii)(a) above
in the case of a Class A  Certificateholder  and the  information  set  forth in
clauses  (iii)  and  (iv)(a)  above in the  case of a Class B  Certificateholder
aggregated  for such calendar year or applicable  portion  thereof  during which
such Person was a  Certificateholder.  Such  obligation  of the Master  Servicer
shall  be  deemed  to have  been  satisfied  to the  extent  that  substantially
comparable  information shall be provided by the Master Servicer pursuant to any
requirements of the Code from time to time in force.

            Prior to the close of business on the third  Business Day  preceding
each  Distribution  Date,  the Master  Servicer shall furnish a statement to the
Trustee,  any Paying Agent and the Seller (the  information in such statement to
be made  available  to  Certificateholders  by the  Master  Servicer  on written
request)  setting  forth the Class A  Distribution  Amount with  respect to each
Class of Class A Certificates  and the Class B Distribution  Amount with respect
to each Class of Class B Certificates.  The determination by the Master Servicer
of such amounts shall, in the absence of obvious error, be presumptively  deemed
to be correct for all  purposes  hereunder  and the Trustee and the Paying Agent
shall be protected in relying  upon the same  without any  independent  check or
verification.

            In addition to the reports  required  pursuant to this Section 4.04,
the Master  Servicer  shall make  available upon request to each Holder and each
proposed  transferee  of a  Class  A-PO,  Class  B-4,  Class  B-5 or  Class  B-6
Certificate  such additional  information,  if any, as may be required to permit
the proposed transfer to be effected pursuant to Rule 144A.

            SECTION 4.05      REPORTS TO MORTGAGORS AND THE INTERNAL  REVENUE
SERVICE.

            The Master  Servicer shall, in each year beginning after the Cut-Off
Date,  make the  reports  of  foreclosures  and  abandonments  of any  Mortgaged
Property  as  required  by Code  Section  6050J.  In  order to  facilitate  this
reporting process,  the Master Servicer shall request that each Servicer,  on or
before January 15th of each year, shall provide to the Internal Revenue Service,
with copies to the Master Servicer,  reports relating to each instance occurring
during the previous  calendar  year in which such  Servicer (i) on behalf of the
Trustee  acquires an interest in a Mortgaged  Property  through  foreclosure  or
other comparable  conversion in full or partial  satisfaction of a Mortgage Loan
serviced by such Servicer,  or (ii) knows or has reason to know that a Mortgaged
Property has been  abandoned.  Reports from the  Servicers  shall be in form and
substance sufficient to meet the reporting  requirements imposed by Code Section
6050J.  In  addition,  each  Servicer  shall  provide the Master  Servicer  with
sufficient  information  to allow the Master  Servicer  to, for each year ending
after the  Cut-Off  Date,  provide,  or cause to be  provided,  to the  Internal
Revenue  Service and the Mortgagors  such  information as is required under Code
Sections 6050H (regarding payment of interest) and 6050P (regarding cancellation
of indebtedness).

            SECTION 4.06      CALCULATION  OF  AMOUNTS;  BINDING  EFFECT  OF
INTERPRETATIONS AND ACTIONS OF MASTER SERVICER.

            The Master Servicer will compute the amount of all  distributions to
be made on the Certificates and all losses to be allocated to the  Certificates.
In  the  event  that  the  Master  Servicer  concludes  that  any  ambiguity  or
uncertainty exists in any provisions of this Agreement relating to distributions
to be made on the Certificates or the allocation of losses to the  Certificates,
the  interpretation  of such  provisions  and any  actions  taken by the  Master
Servicer in good faith to implement  such  interpretation  shall be binding upon
Certificateholders.

            SECTION 4.07      DETERMINATION OF LIBOR.

            On each Rate  Determination  Date, the Trustee shall determine LIBOR
for the Distribution  Date occurring in the succeeding month on the basis of the
British Bankers'  Association  ("BBA") "Interest  Settlement Rate" for one-month
deposits in U.S.  dollars as found on Telerate page 3750 as of 11:00 A.M. London
time on such Rate Determination Date. As used herein, "Telerate page 3750" means
the display designated as page 3750 on the Dow Jones Telerate Service.

            If on any Rate Determination Date the Trustee is unable to determine
LIBOR on the basis of the method set forth in the preceding paragraph, LIBOR for
the Distribution Date in the succeeding month will be whichever is higher of (x)
LIBOR as determined on the previous Rate  Determination  Date or (y) the Reserve
Interest Rate. The "Reserve  Interest Rate" will be the rate per annum which the
Trustee  determines  to  be  either  (A)  the  arithmetic  mean  (rounding  such
arithmetic  mean upwards if necessary to the nearest whole multiple of 1/16%) of
the one-month  Eurodollar lending rates that the Reference Banks are quoting, on
the relevant Rate  Determination  Date, to the  principal  London  offices of at
least two leading banks in the London  interbank market or (b) in the event that
the  Trustee  can  determine  no such  arithmetic  mean,  the  lowest  one-month
Eurodollar  lending  rate  that the  Reference  Banks are  quoting  on such Rate
Determination Date to leading European banks.

            If on any Rate  Determination  Date the Trustee is  required  but is
unable to  determine  the Reserve  Interest  Rate in the manner  provided in the
preceding  paragraph,  LIBOR for the  Distribution  Date in the succeeding month
will be LIBOR as determined on the previous Rate Determination  Date, or, in the
case of the first Rate Determination Date, 4.940%.

            The  establishment  of  LIBOR  by  the  Trustee  and  the  Trustee's
subsequent  calculation of the rates of interest applicable to each of the LIBOR
Certificates in the absence of manifest error, will be final and binding.  After
a Rate  Determination  Date,  the Trustee shall provide the Class A Pass-Through
Rates of the LIBOR Certificates for the related  Distribution Date to Beneficial
Owners  or  Holders  of LIBOR  Certificates  who place a  telephone  call to the
Trustee at (704)  383-5272 and make a request  therefor  during  normal  working
hours on any Business Day.


<PAGE>


                                    ARTICLE V

                                THE CERTIFICATES

            SECTION 5.01      THE CERTIFICATES.

            (a) The  Class A and Class B Certificates  shall be issued only in
minimum  Denominations  of a Single  Certificate and, except for the Class A-PO,
Class A-R and Class A-LR  Certificates,  integral  multiples of $1,000 in excess
thereof (except, if necessary, for one Certificate of each Class (other than the
Class A-PO,  Class A-R and Class A-LR  Certificates)  that  evidences one Single
Certificate  plus such  additional  principal  portion or notional  amount as is
required  in order for all  Certificates  of such  Class to equal the  aggregate
Original  Principal  Balance of such Class),  and shall be  substantially in the
respective  forms set forth as Exhibits  A-1, A-2, A-3, A-4, A-5, A-6, A-7, A-8,
A-9, A-10, A-11, A-12, A-13, A-14, A-PO, A-R, A-LR, B-1, B-2, B-3, B-4, B-5, B-6
and C (reverse side of Certificates)  hereto. On original issue the Certificates
shall be  executed  and  delivered  by the  Trustee  to or upon the order of the
Seller upon receipt by the Trustee or the Custodian of the  documents  specified
in Section 2.01. The aggregate  principal portion (or notional amount) evidenced
by the  Class  A and  Class  B  Certificates  shall  be the  sum of the  amounts
specifically set forth in the respective Certificates. The Certificates shall be
executed  by manual or  facsimile  signature  on  behalf of the  Trustee  by any
Responsible  Officer  thereof.  Certificates  bearing  the  manual or  facsimile
signatures  of  individuals  who  were at any time the  proper  officers  of the
Trustee shall bind the Trustee  notwithstanding  that such individuals or any of
them have ceased to hold such offices prior to the  authentication  and delivery
of  such  Certificates  or did  not  hold  such  offices  at the  date  of  such
Certificates.  No  Certificate  shall be  entitled  to any  benefit  under  this
Agreement,  or be valid for any  purpose,  unless  manually  countersigned  by a
Responsible  Officer of the Trustee, or unless there appears on such Certificate
a certificate of authentication  executed by the Authenticating  Agent by manual
signature,  and such countersignature or certificate upon a Certificate shall be
conclusive evidence, and the only evidence,  that such Certificate has been duly
authenticated and delivered hereunder.  All Certificates shall be dated the date
of their authentication.

            Until such time as Definitive  Certificates  are issued  pursuant to
Section 5.07, each Book-Entry Certificate shall bear the following legend:

            "Unless   this   certificate   is   presented   by   an   authorized
representative  of  [the  Clearing  Agency]  to  the  Seller  or its  agent  for
registration of transfer,  exchange or payment,  and any  certificate  issued is
registered in the name of [the Clearing  Agency] or such other name as requested
by an authorized representative of [the Clearing Agency] and any payment is made
to [the Clearing Agency], any transfer,  pledge or other use hereof for value or
otherwise by or to any person is wrongful  since the  registered  owner  hereof,
[the Clearing Agency], has an interest herein."

            (b) Upon original issuance,  the Book-Entry  Certificates shall be
issued in the form of one or more typewritten  certificates,  to be delivered to
The Depository Trust Company,  the initial Clearing Agency, by, or on behalf of,
the Seller.  Such Certificates  shall initially be registered in the Certificate
Register  in the name of the  nominee of the  initial  Clearing  Agency,  and no
Beneficial  Owner  will  receive  a  definitive  certificate  representing  such
Beneficial Owner's interest in the Book-Entry  Certificates,  except as provided
in Section 5.07.  Unless and until  definitive,  fully  registered  certificates
("Definitive  Certificates")  have been issued to Beneficial  Owners pursuant to
Section 5.07:

               (i) the  provisions  of this  Section 5.01(b)  shall  be in full
      force and effect;

               (ii) the Seller, the Master Servicer,  the Certificate  Registrar
      and the  Trustee  may  deal  with the  Clearing  Agency  for all  purposes
      (including the making of distributions on the Book-Entry  Certificates and
      the taking of actions by the Holders of  Book-Entry  Certificates)  as the
      authorized representative of the Beneficial Owners;

               (iii) to the extent that the  provisions of this Section  5.01(b)
      conflict with any other  provisions of this  Agreement,  the provisions of
      this Section 5.01(b) shall control;

               (iv) the rights of  Beneficial  Owners  shall be  exercised  only
      through the Clearing  Agency and shall be limited to those  established by
      law, the rules,  regulations  and  procedures  of the Clearing  Agency and
      agreements  between such Beneficial  Owners and the Clearing Agency and/or
      the Clearing Agency Participants,  and all references in this Agreement to
      actions  by  Certificateholders  shall,  with  respect  to the  Book-Entry
      Certificates,   refer  to  actions  taken  by  the  Clearing  Agency  upon
      instructions from the Clearing Agency Participants,  and all references in
      this  Agreement  to  distributions,  notices,  reports and  statements  to
      Certificateholders  shall,  with respect to the  Book-Entry  Certificates,
      refer to  distributions,  notices,  reports and statements to the Clearing
      Agency  or  its  nominee,   as   registered   holder  of  the   Book-Entry
      Certificates, as the case may be, for distribution to Beneficial Owners in
      accordance with the procedures of the Clearing Agency; and

               (v) the initial Clearing  Agency will make  book-entry  transfers
      among  the  Clearing   Agency   Participants   and  receive  and  transmit
      distributions  of  principal  and  interest  on  the  Certificates  to the
      Clearing  Agency  Participants,  for  distribution by such Clearing Agency
      Participants to the Beneficial Owners or their nominees.

            For  purposes  of any  provision  of  this  Agreement  requiring  or
permitting  actions  with the consent  of, or at the  direction  of,  Holders of
Book-Entry Certificates evidencing specified Voting Interests, such direction or
consent  shall  be  given by  Beneficial  Owners  having  the  requisite  Voting
Interests, acting through the Clearing Agency.

            Unless  and  until  Definitive  Certificates  have  been  issued  to
Beneficial  Owners pursuant to Section 5.07, copies of the reports or statements
referred to in Section 4.04 shall be available to Beneficial Owners upon written
request to the Trustee at the Corporate Trust Office.

            SECTION 5.02      REGISTRATION OF CERTIFICATES.

            (a) The  Trustee  shall  cause to be kept at one of the offices or
agencies to be maintained in  accordance  with the  provisions of Section 5.06 a
Certificate Register in which, subject to such reasonable  regulations as it may
prescribe, the Trustee shall provide for the registration of Certificates and of
transfers and exchanges of  Certificates as herein  provided.  The Trustee shall
act as, or shall appoint, a Certificate Registrar for the purpose of registering
Certificates and transfers and exchanges of Certificates as herein provided.

            Upon surrender for  registration  of transfer of any  Certificate at
any office or agency  maintained for such purpose  pursuant to Section 5.06 (and
subject to the provisions of this Section 5.02) the Trustee shall  execute,  and
shall date, authenticate (or cause the Authenticating Agent to authenticate) and
deliver,  in the name of the designated  transferee or transferees,  one or more
new Certificates of a like aggregate  principal  portion or Percentage  Interest
and of the same Class.

            At  the  option  of  the  Certificateholders,  Certificates  may  be
exchanged for other Certificates of authorized Denominations of a like aggregate
principal portion or Percentage Interest and of the same Class upon surrender of
the  Certificates  to be  exchanged  at any such office or agency.  Whenever any
Certificates  are so surrendered  for exchange,  the Trustee shall execute,  and
shall date, authenticate (or cause the Authenticating Agent to authenticate) and
deliver,  the Certificates  which the  Certificateholder  making the exchange is
entitled to receive.  Every Certificate presented or surrendered for transfer or
exchange shall (if so required by the  Certificate  Registrar or the Trustee) be
duly endorsed by, or be accompanied by a written  instrument of transfer in form
satisfactory to the Certificate  Registrar,  duly executed by the Holder thereof
or his attorney duly authorized in writing.

            No service  charge  shall be made for any  transfer  or  exchange of
Certificates,  but the Trustee or the Certificate  Registrar may require payment
of a sum sufficient to cover any tax or governmental  charge that may be imposed
in connection with any transfer or exchange of Certificates.

            All  Certificates  surrendered  for transfer  and exchange  shall be
canceled by the Certificate  Registrar,  the Trustee or the Authenticating Agent
in accordance with their standard procedures.

            (b) No transfer of a Class A-PO, Class B-4, Class B-5 or Class B-6
Certificate shall be made unless the registration requirements of the Securities
Act of 1933, as amended,  and any applicable  State securities laws are complied
with, or such transfer is exempt from the registration  requirements  under said
Act and laws.  In the event that a transfer  is to be made in  reliance  upon an
exemption from said Act or laws, (i) unless such transfer is made in reliance on
Rule 144A,  the Trustee or the Seller may, if such transfer is to be made within
three years after the later of (i) the date of the initial sale of  Certificates
or (ii) the last date on which the Seller or any affiliate  thereof was a Holder
of the Certificates proposed to be transferred, require a Class A-PO, Class B-4,
Class B-5 or Class B-6 Certificateholder to deliver a written Opinion of Counsel
acceptable  to and in form and  substance  satisfactory  to the  Trustee and the
Seller,  to the effect that such  transfer may be made pursuant to an exemption,
describing the applicable  exemption and the basis  therefor,  from said Act and
laws or is being made  pursuant to said Act and laws,  which  Opinion of Counsel
shall not be an expense of the Trustee,  the Seller or the Master Servicer,  and
(ii) the Trustee  shall require the  transferee  (other than an affiliate of the
Seller on the  Closing  Date) to  execute  an  investment  letter in the form of
Exhibit J hereto  certifying to the Seller and the Trustee the facts surrounding
such transfer,  which investment  letter shall not be an expense of the Trustee,
the Seller or the Master Servicer.  The Holder of a Class A-PO, Class B-4, Class
B-5 or Class B-6 Certificate  desiring to effect such transfer  shall,  and does
hereby agree to, indemnify the Trustee,  the Seller, the Master Servicer and any
Paying  Agent  acting on behalf of the Trustee  against any  liability  that may
result if the transfer is not so exempt or is not made in  accordance  with such
federal  and  state  laws.  Neither  the  Seller  nor the  Trustee  is  under an
obligation  to  register  the  Class  A-PO,  Class  B-4,  Class B-5 or Class B-6
Certificates under said Act or any other securities law.

            (c) No transfer of a Class A-14, Class A-PO or Class B Certificate
shall be made (other  than the  transfer  of the Class A-PO  Certificates  to an
affiliate  of the Seller on the Closing  Date) unless the Trustee and the Seller
shall have received (i) a representation  letter from the transferee in the form
of Exhibit J hereto,  in the case of a Class A-PO, Class B-4, Class B-5 or Class
B-6  Certificate,  or in the form of  Exhibit K  hereto,  in the case of a Class
A-14, Class B-1, Class B-2 or Class B-3  Certificate,  to the effect that either
(a)  such  transferee  is not an  employee  benefit  plan  or  other  retirement
arrangement  subject to Title I of ERISA or Code Section 4975, or a governmental
plan,  as defined in Section  3(32) of ERISA,  subject to any federal,  state or
local law ("Similar Law") which is to a material extent similar to the foregoing
provisions  of ERISA or the Code  (collectively,  a "Plan")  and is not a person
acting on behalf of or using the assets of any such Plan,  which  representation
letter shall not be an expense of the Trustee, the Seller or the Master Servicer
or (b) with  respect to the Class  A-14 or Class B  Certificates  only,  if such
transferee is an insurance company, (A) the source of funds used to purchase the
Class A-14 or Class B Certificate is an "insurance  company general account" (as
such term is defined in Section V(e) of Prohibited  Transaction  Class Exemption
95-60 ("PTE 95-60"),  60 Fed. Reg. 35925 (July 12, 1995)),  (B) there is no Plan
with  respect  to which  the  amount  of such  general  account's  reserves  and
liabilities for the contract(s)  held by or on behalf of such Plan and all other
Plans  maintained  by the same  employer  (or  affiliate  thereof  as defined in
Section V(a)(1) of PTE 95-60) or by the same employee  organization  exceeds 10%
of the total of all reserves and  liabilities  of such general  account (as such
amounts  are  determined  under  Section  I(a)  of PTE  95-60)  at the  date  of
acquisition  and (C) the  purchase  and  holding  of such  Class A-14 or Class B
Certificates  are covered by Sections I and III of PTE 95-60 or (ii) in the case
of any  such  Class  A-14,  Class  A-PO or  Class B  Certificate  presented  for
registration  in the  name of a Plan,  or a  trustee  of any such  Plan,  (A) an
Opinion of Counsel satisfactory to the Trustee and the Seller to the effect that
the  purchase or holding of such Class A-14,  Class A-PO or Class B  Certificate
will not  result  in the  assets of the Trust  Estate  being  deemed to be "plan
assets" and subject to the prohibited  transaction provisions of ERISA, the Code
or  Similar  Law and will not  subject  the  Trustee,  the  Seller or the Master
Servicer to any  obligation in addition to those  undertaken in this  Agreement,
which Opinion of Counsel  shall not be an expense of the Trustee,  the Seller or
the  Master  Servicer  and  (B)  such  other  opinions  of  counsel,   officer's
certificates  and agreements as the Seller or the Master Servicer may require in
connection with such transfer, which opinions of counsel, officers' certificates
and agreements shall not be an expense of the Trustee,  the Seller or the Master
Servicer.  The Class  A-14,  Class  A-PO and Class B  Certificates  shall bear a
legend referring to the foregoing restrictions contained in this paragraph.

            (d) No  legal or beneficial  interest in all or any portion of the
Class A-R or Class A-LR Certificate may be transferred directly or indirectly to
a "disqualified  organization"  within the meaning of Code Section 860E(e)(5) or
an agent  of a  disqualified  organization  (including  a  broker,  nominee,  or
middleman), to a Plan or a Person acting on behalf of or investing the assets of
a Plan (such Plan or Person, an "ERISA Prohibited  Holder") or to an individual,
corporation,  partnership  or other person unless such  transferee  (i) is not a
Non-U.S.  Person or (ii) is a Non-U.S.  Person that holds the Class A-R or Class
A-LR  Certificate in connection  with the conduct of a trade or business  within
the United  States and has  furnished  the  transferor  and the Trustee  with an
effective Internal Revenue Service Form 4224 or (iii) is a Non-U.S.  Person that
has delivered to both the  transferor and the Trustee an opinion of a nationally
recognized tax counsel to the effect that the transfer of the Class A-R or Class
A-LR  Certificate to it is in accordance  with the  requirements of the Code and
the regulations  promulgated  thereunder and that such transfer of the Class A-R
or Class  A-LR  Certificate  will not be  disregarded  for  federal  income  tax
purposes (any such person who is not covered by clauses (i), (ii) or (iii) above
being  referred to herein as a  "Non-permitted  Foreign  Holder"),  and any such
purported  transfer  shall be void and have no  effect.  The  Trustee  shall not
execute,  and shall not  authenticate  (or  cause  the  Authenticating  Agent to
authenticate)  and  deliver,  a new  Class  A-R or  Class  A-LR  Certificate  in
connection  with any  such  transfer  to a  disqualified  organization  or agent
thereof (including a broker,  nominee or middleman),  an ERISA Prohibited Holder
or a Non-permitted Foreign Holder, and neither the Certificate Registrar nor the
Trustee shall accept a surrender for transfer or  registration  of transfer,  or
register the transfer  of, the Class A-R or Class A-LR  Certificate,  unless the
transferor shall have provided to the Trustee an affidavit, substantially in the
form attached as Exhibit H hereto, signed by the transferee,  to the effect that
the transferee is not such a disqualified  organization,  an agent  (including a
broker, nominee, or middleman) for any entity as to which the transferee has not
received a substantially  similar  affidavit,  an ERISA  Prohibited  Holder or a
Non-permitted  Foreign Holder,  which affidavit shall contain the consent of the
transferee  to any such  amendments  of this  Agreement  as may be  required  to
further  effectuate the foregoing  restrictions  on transfer of the Class A-R or
Class A-LR Certificate to disqualified  organizations,  ERISA Prohibited Holders
or  Non-permitted  Foreign  Holders.  Such  affidavit  shall  also  contain  the
statement of the transferee  that (i) the transferee has  historically  paid its
debts  as they  have  come  due and  intends  to do so in the  future,  (ii) the
transferee  understands  that it may incur  liabilities  in excess of cash flows
generated by the residual  interest,  (iii) the transferee  intends to pay taxes
associated  with holding the  residual  interest as they become due and (iv) the
transferee  will not  transfer  the Class A-R or Class A-LR  Certificate  to any
Person who does not provide an affidavit  substantially  in the form attached as
Exhibit H hereto.

            The affidavit described in the preceding paragraph,  if not executed
in  connection  with  the  initial  issuance  of the  Class  A-R or  Class  A-LR
Certificate, shall be accompanied by a written statement in the form attached as
Exhibit I hereto, signed by the transferor, to the effect that as of the time of
the transfer,  the transferor  has no actual  knowledge that the transferee is a
disqualified  organization,  ERISA Prohibited  Holder or  Non-permitted  Foreign
Holder,  and has no knowledge or reason to know that the statements  made by the
transferee  with  respect to clauses  (i) and (iii) of the last  sentence of the
preceding  paragraph  are not true.  The Class A-R and Class  A-LR  Certificates
shall bear a legend  referring to the foregoing  restrictions  contained in this
paragraph and the preceding paragraph.

            Upon  notice to the  Master  Servicer  that any legal or  beneficial
interest  in any  portion  of the Class A-R or Class A-LR  Certificate  has been
transferred,  directly or indirectly,  to a disqualified  organization  or agent
thereof  (including a broker,  nominee,  or middleman) in  contravention  of the
foregoing  restrictions,  (i) such transferee  shall be deemed to hold the Class
A-R or Class A-LR Certificate in constructive  trust for the last transferor who
was not a disqualified  organization or agent thereof, and such transferor shall
be  restored  as the  owner of such  Class  A-R or  Class  A-LR  Certificate  as
completely  as if such  transfer had never  occurred,  provided  that the Master
Servicer  may, but is not required to,  recover any  distributions  made to such
transferee with respect to the Class A-R or Class A-LR Certificate, and (ii) the
Master  Servicer  agrees to furnish to the Internal  Revenue  Service and to any
transferor of the Class A-R or Class A-LR  Certificate  or such agent (within 60
days of the  request  therefor  by the  transferor  or agent)  such  information
necessary to the  application of Code Section  860E(e) as may be required by the
Code,  including but not limited to the present  value of the total  anticipated
excess  inclusions  with respect to the Class A-R or Class A-LR  Certificate (or
portion thereof) for periods after such transfer.  At the election of the Master
Servicer,  the cost to the Master  Servicer of  computing  and  furnishing  such
information  may be charged to the  transferor or such agent  referred to above;
however,  the Master  Servicer shall in no event be excused from furnishing such
information.

            SECTION 5.03      MUTILATED,    DESTROYED,   LOST   OR   STOLEN
CERTIFICATES.

            If (i) any mutilated  Certificate  is  surrendered to the Trustee or
the Authenticating  Agent, or the Trustee or the  Authenticating  Agent receives
evidence  to  its  satisfaction  of  the  destruction,  loss  or  theft  of  any
Certificate,  and (ii) there is delivered  to the Trustee or the  Authenticating
Agent such security or indemnity as may be required by them to hold each of them
harmless,  then,  in the absence of notice to the Trustee or the  Authenticating
Agent that such  Certificate  has been  acquired by a bona fide  purchaser,  the
Trustee shall execute and  authenticate  (or cause the  Authenticating  Agent to
authenticate)  and deliver,  in exchange  for or in lieu of any such  mutilated,
destroyed,  lost or stolen  Certificate,  a new  Certificate  of like  tenor and
principal  portion  or  Percentage  Interest  and of the  same  Class.  Upon the
issuance  of  any  new  Certificate  under  this  Section,  the  Trustee  or the
Certificate  Registrar may require the payment of a sum  sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto and any
other  expense   (including  the  fees  and  expenses  of  the  Trustee  or  the
Authenticating Agent) in connection therewith.  Any duplicate Certificate issued
pursuant to this Section shall constitute complete and indefeasible  evidence of
ownership in the Trust Estate, as if originally issued, whether or not the lost,
stolen, or destroyed Certificate shall be found at any time.

            SECTION 5.04      PERSONS DEEMED OWNERS.

            Prior to the due  presentation of a Certificate for  registration of
transfer,  the  Seller,  the  Master  Servicer,  the  Trustee,  the  Certificate
Registrar and any agent of the Seller,  the Master Servicer,  the Trustee or the
Certificate  Registrar  may treat the  Person in whose name any  Certificate  is
registered  as the  owner  of such  Certificate  for the  purpose  of  receiving
distributions  pursuant to Section 4.01, and for all other purposes  whatsoever,
and  neither the Seller,  the Master  Servicer,  the  Trustee,  the  Certificate
Registrar nor any agent of the Seller,  the Master Servicer,  the Trustee or the
Certificate Registrar shall be affected by notice to the contrary.

            SECTION 5.05      ACCESS TO LIST OF CERTIFICATEHOLDERS' NAMES AND
ADDRESSES.

            (a) If  the Trustee is not acting as  Certificate  Registrar,  the
Certificate  Registrar  shall  furnish or cause to be  furnished to the Trustee,
within 15 days after  receipt by the  Certificate  Registrar of a request by the
Trustee in writing, a list, in such form as the Trustee may reasonably  require,
of the names and  addresses  of the  Certificateholders  of each Class as of the
most recent Record Date.

            (b) If five or more Certificateholders (hereinafter referred to as
"applicants") apply in writing to the Trustee,  and such application states that
the applicants desire to communicate with other  Certificateholders with respect
to  their  rights  under  this  Agreement  or  under  the  Certificates  and  is
accompanied  by a copy of the  communication  which such  applicants  propose to
transmit,  then the Trustee  shall,  within five  Business  Days  following  the
receipt  of such  application,  afford  such  applicants  access  during  normal
business  hours  to the  most  recent  list  of  Certificateholders  held by the
Trustee. If such a list is as of the date more than 90 days prior to the date of
receipt of such  applicants'  request  and the  Trustee  is not the  Certificate
Registrar,  the Trustee shall promptly request from the Certificate  Registrar a
current  list as  provided  in  paragraph  (a)  hereof,  and shall  afford  such
applicants access to such list promptly upon receipt.

            (c) Every   Certificateholder,   by   receiving   and   holding  a
Certificate,  agrees  with the  Seller,  the Master  Servicer,  the  Certificate
Registrar  and the Trustee that  neither the Seller,  the Master  Servicer,  the
Certificate Registrar nor the Trustee shall be held accountable by reason of the
disclosure of any such  information  as to the names,  addresses and  Percentage
Interests of the  Certificateholders  hereunder,  regardless  of the source from
which such information was delivered.

            SECTION 5.06      MAINTENANCE OF OFFICE OR AGENCY.

            The Trustee will maintain, at its expense, an office or agency where
Certificates  may be surrendered  for  registration  of transfer or exchange and
where notices and demands to or upon the Certificate Registrar in respect of the
Certificates and this Agreement may be served. The Trustee initially  designates
the  Corporate  Trust  Office and the  principal  corporate  trust office of the
Authenticating Agent, if any, as its offices and agencies for said purposes.

            SECTION 5.07      DEFINITIVE CERTIFICATES.

            If (i)(A) the Master  Servicer  advises the Trustee in writing  that
the  Clearing  Agency is no longer  willing or able  properly to  discharge  its
responsibilities as depository with respect to the Book-Entry Certificates,  and
(B) the Master  Servicer  is unable to locate a  qualified  successor,  (ii) the
Master Servicer, at its option, advises the Trustee in writing that it elects to
terminate the book-entry  system through the Clearing Agency, or (iii) after the
occurrence of dismissal or resignation of the Master Servicer, Beneficial Owners
representing  aggregate  Voting  Interests of not less than 51% of the aggregate
Voting Interests of each outstanding Class of Book-Entry Certificates advise the
Trustee through the Clearing Agency and Clearing Agency  Participants in writing
that the  continuation of a book-entry  system through the Clearing Agency is no
longer in the best interests of the Beneficial  Owners, the Trustee shall notify
the Beneficial  Owners,  through the Clearing  Agency,  of the occurrence of any
such event and of the  availability  of  Definitive  Certificates  to Beneficial
Owners requesting the same. Upon surrender to the Trustee by the Clearing Agency
of the Certificates held of record by its nominee, accompanied by reregistration
instructions and directions to execute and  authenticate  new Certificates  from
the Master  Servicer,  the Trustee  shall  execute and  authenticate  Definitive
Certificates  for delivery at its Corporate  Trust Office.  The Master  Servicer
shall arrange for, and will bear all costs of, the printing and issuance of such
Definitive Certificates. Neither the Seller, the Master Servicer nor the Trustee
shall be liable for any delay in delivery of such  instructions  by the Clearing
Agency and may conclusively  rely on, and shall be protected in relying on, such
instructions.

            SECTION 5.08      NOTICES TO CLEARING AGENCY.

            Whenever notice or other  communication to the Holders of Book-Entry
Certificates  is  required  under this  Agreement,  unless and until  Definitive
Certificates  shall have been issued to  Beneficial  Owners  pursuant to Section
5.07,  the  Trustee  shall give all such  notices and  communications  specified
herein to be given to Holders of Book-Entry Certificates to the Clearing Agency.


<PAGE>


                                   ARTICLE VI

                       THE SELLER AND THE MASTER SERVICER

            SECTION 6.01      LIABILITY OF THE SELLER AND THE MASTER SERVICER.

            The  Seller  and  the  Master  Servicer  shall  each  be  liable  in
accordance herewith only to the extent of the obligations  specifically  imposed
by this  Agreement  and  undertaken  hereunder  by the  Seller  and  the  Master
Servicer.

            SECTION 6.02      MERGER OR  CONSOLIDATION  OF THE  SELLER OR THE
MASTER SERVICER.

            Subject  to the  following  paragraph,  the  Seller  and the  Master
Servicer each will keep in full effect its existence, rights and franchises as a
corporation  under the laws of the jurisdiction of its  incorporation,  and will
obtain and preserve its qualification to do business as a foreign corporation in
each  jurisdiction  in which  such  qualification  is or shall be  necessary  to
protect the validity and  enforceability of this Agreement,  the Certificates or
any of the  Mortgage  Loans and to  perform  its  respective  duties  under this
Agreement.

            The Seller or the Master Servicer may be merged or consolidated with
or into any Person,  or transfer all or  substantially  all of its assets to any
Person,  in which case any Person  resulting from any merger or consolidation to
which the Seller or Master Servicer shall be a party,  or any Person  succeeding
to the business of the Seller or Master Servicer,  shall be the successor of the
Seller or Master  Servicer  hereunder,  without the  execution  or filing of any
paper or any  further  act on the part of any of the  parties  hereto,  anything
herein to the contrary notwithstanding;  provided, however, that, in the case of
the Master  Servicer,  any such successor or resulting Person shall be qualified
to service mortgage loans for FNMA or FHLMC.

            SECTION 6.03      LIMITATION  ON  LIABILITY  OF THE  SELLER,  THE
MASTER SERVICER AND OTHERS.

            Neither the Seller nor the Master Servicer nor any subcontractor nor
any of the  partners,  directors,  officers,  employees or agents of any of them
shall be under any liability to the Trust Estate or the  Certificateholders  and
all such Persons shall be held  harmless for any action taken or for  refraining
from the taking of any action in good faith pursuant to this  Agreement,  or for
errors in judgment; provided, however, that this provision shall not protect any
such Person against any breach of warranties or  representations  made herein or
against  any  liability  which would  otherwise  be imposed by reason of willful
misfeasance,  bad faith or gross  negligence in the  performance of duties or by
reason of reckless  disregard of obligations and duties  hereunder.  The Seller,
the Master Servicer,  any  subcontractor,  and any partner,  director,  officer,
employee  or agent of any of them shall be entitled  to  indemnification  by the
Trust Estate and will be held  harmless  against any loss,  liability or expense
incurred in connection  with any legal action  relating to this Agreement or the
Certificates,  other than any loss,  liability or expense  incurred by reason of
willful misfeasance,  bad faith or gross negligence in the performance of his or
its  duties  hereunder  or by  reason  of  reckless  disregard  of  his  or  its
obligations and duties hereunder. The Seller, the Master Servicer and any of the
directors, officers, employees or agents of either may rely in good faith on any
document of any kind which,  prima facie, is properly  executed and submitted by
any Person respecting any matters arising hereunder.  Neither the Seller nor the
Master Servicer shall be under any obligation to appear in,  prosecute or defend
any legal action  unless such action is related to its  respective  duties under
this  Agreement  and which in its opinion  does not involve it in any expense or
liability;  provided, however, that the Seller or the Master Servicer may in its
discretion  undertake  any such action which it may deem  necessary or desirable
with respect to this  Agreement and the rights and duties of the parties  hereto
and the interests of the Certificateholders  hereunder if the Certificateholders
offer to the  Seller  or the  Master  Servicer,  as the case may be,  reasonable
security or indemnity  against the costs,  expenses and liabilities which may be
incurred therein or thereby. In such event, the legal expenses and costs of such
action  and any  liability  resulting  therefrom  shall be  expenses,  costs and
liabilities of the Trust Estate,  and the Seller or the Master Servicer shall be
entitled to be  reimbursed  therefor out of the  Certificate  Account,  and such
amounts shall,  on the following  Distribution  Date or  Distribution  Dates, be
allocated in reduction of  distributions on the Class A and Class B Certificates
in the same manner as Realized Losses are allocated pursuant to Section 4.02(a).

            SECTION 6.04      RESIGNATION OF THE MASTER SERVICER.

            The Master Servicer shall not resign from the obligations and duties
hereby imposed on it except upon  determination that its duties hereunder are no
longer permissible under applicable law or are in material conflict by reason of
applicable  law  with  any  other   activities   carried  on  by  it.  Any  such
determination  permitting  the  resignation  of the  Master  Servicer  shall  be
evidenced by an Opinion of Counsel to such effect  delivered to the Trustee.  No
such  resignation  shall  become  effective  until the  Trustee  or a  successor
servicer  shall have  assumed the Master  Servicer's  responsibilities,  duties,
liabilities and obligations hereunder.

            SECTION 6.05      COMPENSATION TO THE MASTER SERVICER.

            The Master Servicer shall be entitled to receive a monthly fee equal
to the Master Servicing Fee, as compensation for services rendered by the Master
Servicer under this Agreement.  The Master Servicer also will be entitled to any
late reporting fees paid by a Servicer  pursuant to its Servicing  Agreement and
any  investment  income  on funds  on  deposit  in the  Certificate  Account  as
additional compensation.

            SECTION 6.06      ASSIGNMENT  OR  DELEGATION  OF DUTIES BY MASTER
SERVICER.

            The Master  Servicer shall not assign or transfer any of its rights,
benefits or privileges under this Agreement to any other Person,  or delegate to
or subcontract  with, or authorize or appoint any other Person to perform any of
the duties,  covenants or  obligations  to be  performed by the Master  Servicer
without the prior written consent of the Trustee, and any agreement,  instrument
or act  purporting  to  effect  any such  assignment,  transfer,  delegation  or
appointment shall be void.  Notwithstanding  the foregoing,  the Master Servicer
shall have the right  without  the prior  written  consent of the Trustee (i) to
assign its rights and delegate its duties and obligations  hereunder;  provided,
however,  that (a) the  purchaser or  transferee  accepting  such  assignment or
delegation  is  qualified  to  service  mortgage  loans  for FNMA or  FHLMC,  is
satisfactory  to the Trustee,  in the exercise of its reasonable  judgment,  and
executes  and  delivers  to the  Trustee  an  agreement,  in form and  substance
reasonably  satisfactory  to the Trustee,  which  contains an assumption by such
purchaser or transferee of the due and punctual  performance  and  observance of
each covenant and  condition to be performed or observed by the Master  Servicer
hereunder  from and after the date of such  agreement;  and (b) each  applicable
Rating Agency's rating of any Certificates in effect  immediately  prior to such
assignment,  sale  or  transfer  is  not  reasonably  likely  to  be  qualified,
downgraded or withdrawn as a result of such assignment, sale or transfer and the
Certificates  are not reasonably  likely to be placed on credit review status by
any such Rating Agency; and (ii) to delegate to, subcontract with, authorize, or
appoint an affiliate of the Master Servicer to perform and carry out any duties,
covenants or obligations to be performed and carried out by the Master  Servicer
under this Agreement and hereby agrees so to delegate, subcontract, authorize or
appoint  to an  affiliate  of the  Master  Servicer  any  duties,  covenants  or
obligations to be performed and carried out by the Master Servicer to the extent
that such duties,  covenants or obligations  are to be performed in any state or
states in which the  Master  Servicer  is not  authorized  to do  business  as a
foreign  corporation  but in which the affiliate is so  authorized.  In no case,
however,  shall any  permitted  assignment  and  delegation  relieve  the Master
Servicer of any  liability  to the Trustee or the Seller  under this  Agreement,
incurred  by it prior to the time that the  conditions  contained  in clause (i)
above are met.

            SECTION 6.07      INDEMNIFICATION OF TRUSTEE AND SELLER BY MASTER
SERVICER.

            The Master  Servicer  shall  indemnify and hold harmless the Trustee
and the Seller and any  director,  officer or agent  thereof  against  any loss,
liability or expense,  including reasonable  attorney's fees, arising out of, in
connection  with or  incurred  by reason of  willful  misfeasance,  bad faith or
negligence  in the  performance  of duties of the  Master  Servicer  under  this
Agreement or by reason of reckless disregard of its obligations and duties under
this Agreement. Any payment pursuant to this Section made by the Master Servicer
to the  Trustee or the Seller  shall be from such  entity's  own funds,  without
reimbursement  therefor.  The  provisions of this Section 6.07 shall survive the
termination of this Agreement.

            SECTION 6.08      MASTER SERVICER COVENANTS  CONCERNING YEAR 2000
COMPLIANCE.

            The  Master  Servicer  covenants  that it is  working  to modify its
computer  and other  systems  used in the  performance  of its  duties as master
servicer  for the  Certificates  to operate in a manner such that,  on and after
January 1, 2000, the Master  Servicer can perform its duties in accordance  with
the terms of this Agreement.


<PAGE>


                                   ARTICLE VII

                                     DEFAULT

            SECTION 7.01      EVENTS OF DEFAULT.

            In case one or more of the following Events of Default by the Master
Servicer shall occur and be continuing, that is to say:

               (i) any failure by the Master  Servicer (a) to remit any funds to
      the Paying Agent as required by Section 4.03 or (b) to distribute or cause
      to be distributed to Certificateholders any payment required to be made by
      the Master  Servicer  under the terms of this Agreement  which,  in either
      case,  continues  unremedied for a period of three business days after the
      date upon which written  notice of such failure,  requiring the same to be
      remedied,  shall have been given to the Master  Servicer by the Trustee or
      to the Master  Servicer  and the  Trustee by the  holders of  Certificates
      evidencing  in the  aggregate  not less than 25% of the  aggregate  Voting
      Interest represented by all Certificates; or

               (ii) any  failure  on the  part of the  Master  Servicer  duly to
      observe or perform in any material  respect any other of the  covenants or
      agreements on the part of the Master  Servicer in the  Certificates  or in
      this Agreement  which  continues  unremedied for a period of 60 days after
      the date on which written notice of such failure, requiring the same to be
      remedied,  shall have been given to the Master Servicer by the Trustee, or
      to the Master  Servicer  and the  Trustee by the  holders of  Certificates
      evidencing  in the  aggregate  not less than 25% of the  aggregate  Voting
      Interest represented by all Certificates; or

               (iii) a  decree  or order of a court  or  agency  or  supervisory
      authority  having  jurisdiction  in the premises for the  appointment of a
      trustee,   conservator,   receiver  or  liquidator   in  any   bankruptcy,
      insolvency,  readjustment of debt, marshaling of assets and liabilities or
      similar proceedings,  or for the winding-up or liquidation of its affairs,
      shall have been  entered  against the Master  Servicer  and such decree or
      order shall have remained in force  undischarged and unstayed for a period
      of 60 days; or

               (iv) the Master  Servicer  shall consent to the  appointment of a
      trustee,  conservator,  receiver or liquidator or liquidating committee in
      any bankruptcy, insolvency, readjustment of debt, marshaling of assets and
      liabilities,  voluntary  liquidation or similar proceedings of or relating
      to the Master Servicer,  or of or relating to all or substantially  all of
      its property; or

               (v) the Master  Servicer  shall admit in writing its inability to
      pay its debts  generally  as they  become  due,  file a  petition  to take
      advantage  of any  applicable  insolvency,  bankruptcy  or  reorganization
      statute,   make  an  assignment  for  the  benefit  of  its  creditors  or
      voluntarily suspend payment of its obligations;

               (vi) the Master Servicer shall be dissolved,  or shall dispose of
      all or substantially  all of its assets; or consolidate with or merge into
      another entity or shall permit another entity to consolidate or merge into
      it,  such  that the  resulting  entity  does not meet the  criteria  for a
      successor servicer, as specified in Section 6.02 hereof; or

               (vii) the Master  Servicer  and any  subservicer  appointed by it
      becomes ineligible to service for both FNMA and FHLMC, which ineligibility
      continues unremedied for a period of 90 days.

then, and in each and every such case,  subject to applicable law, so long as an
Event of Default shall not have been remedied, either the Trustee or the holders
of  Certificates  evidencing  in the  aggregate  not  less  than  66 2/3% of the
aggregate Voting Interest represented by all Certificates,  by notice in writing
to the Master  Servicer (and to the Trustee if given by the  Certificateholders)
may terminate all of the rights and  obligations  of the Master  Servicer  under
this Agreement and in and to the Mortgage  Loans,  but without  prejudice to any
rights which the Master Servicer may have to the aggregate Master Servicing Fees
due prior to the date of  transfer  of the  Master  Servicer's  responsibilities
hereunder,  reimbursement of expenses to the extent permitted by this Agreement,
Periodic  Advances  and other  advances  of its own funds.  Upon  receipt by the
Master  Servicer of such written  notice,  all authority and power of the Master
Servicer under this Agreement,  whether with respect to the  Certificates or the
Mortgage Loans or otherwise, shall pass to and be vested in the Trustee pursuant
to and under this  Section,  subject to the  provisions  of Section  7.05;  and,
without  limitation,  the Trustee is hereby  authorized and empowered to execute
and deliver, on behalf of the Master Servicer, as attorney-in-fact or otherwise,
any and all documents and other  instruments,  and to do or accomplish all other
acts or things necessary or appropriate to effect the purposes of such notice of
termination,  whether to complete the transfer and  endorsement or assignment of
the Mortgage  Loans and related  documents  or  otherwise.  The Master  Servicer
agrees to cooperate with the Trustee in effecting the  termination of the Master
Servicer's  responsibilities and rights hereunder and shall promptly provide the
Trustee all  documents  and records  reasonably  requested by it to enable it to
assume  the  Master  Servicer's  functions  hereunder  and shall  promptly  also
transfer to the  Trustee  all  amounts  which then have been or should have been
deposited  in the  Certificate  Account  by the  Master  Servicer  or which  are
thereafter received by the Master Servicer with respect to the Mortgage Loans.

            SECTION 7.02      OTHER REMEDIES OF TRUSTEE.

            During  the  continuance  of any Event of  Default,  so long as such
Event of Default shall not have been remedied,  the Trustee,  in addition to the
rights  specified  in Section  7.01,  shall  have the right,  in its own name as
trustee of an express  trust,  to take all actions now or hereafter  existing at
law, in equity or by statute to enforce its rights and  remedies  and to protect
the interests,  and enforce the rights and remedies,  of the  Certificateholders
(including the institution and prosecution of all judicial,  administrative  and
other  proceedings  and the  filing of  proofs  of claim and debt in  connection
therewith).  Except as otherwise expressly provided in this Agreement, no remedy
provided for by this Agreement shall be exclusive of any other remedy,  and each
and every remedy shall be cumulative  and in addition to any other remedy and no
delay or omission to exercise any right or remedy shall impair any such right or
remedy or shall be deemed to be a waiver of any Event of Default.

            SECTION 7.03      DIRECTIONS BY CERTIFICATEHOLDERS  AND DUTIES OF
TRUSTEE DURING EVENT OF DEFAULT.

            During  the  continuance  of  any  Event  of  Default,   Holders  of
Certificates  evidencing  in the  aggregate  not less than 25% of the  aggregate
Voting Interest  represented by all Certificates may direct the time, method and
place of conducting any proceeding for any remedy  available to the Trustee,  or
exercising any trust or power conferred upon the Trustee,  under this Agreement;
provided,  however,  that the Trustee shall be under no obligation to pursue any
such  remedy,  or to exercise  any of the rights or powers  vested in it by this
agreement (including, without limitation, (i) the conducting or defending of any
administrative action or litigation hereunder or in relation hereto and (ii) the
terminating  of the Master  Servicer  from its  rights  and  duties as  servicer
hereunder) at the request, order or direction of any of the  Certificateholders,
unless such  Certificateholders  shall have  offered to the  Trustee  reasonable
security or indemnity  against the cost,  expenses and liabilities  which may be
incurred  therein  or  thereby  and,  provided  further,  that,  subject  to the
provisions  of  Section  8.01,  the  Trustee  shall have the right to decline to
follow any such  direction  if the  Trustee,  in  accordance  with an Opinion of
Counsel,  determines  that the action or proceeding so directed may not lawfully
be  taken  or if the  Trustee  in good  faith  determines  that  the  action  or
proceeding  so directed  would  involve it in personal  liability or be unjustly
prejudicial to the nonassenting Certificateholders.

            SECTION 7.04      ACTION  UPON  CERTAIN  FAILURES  OF THE  MASTER
SERVICER AND UPON EVENT OF DEFAULT.

            In the event that the Trustee shall have knowledge of any failure of
the Master  Servicer  specified in Section 7.01(i) or (ii) which would become an
Event of  Default  upon the Master  Servicer's  failure to remedy the same after
notice, the Trustee or the Trustee may, but need not if the Trustee deems it not
in the  Certificateholders'  best  interest,  give notice  thereof to the Master
Servicer. For all purposes of this Agreement, in the absence of actual knowledge
by a corporate trust officer of the Trustee,  the Trustee shall not be deemed to
have  knowledge  of any failure of the Master  Servicer as  specified in Section
7.01(i) and (ii) or any Event of Default unless  notified  thereof in writing by
the Master Servicer or by a Certificateholder.

            SECTION 7.05      TRUSTEE TO ACT; APPOINTMENT OF SUCCESSOR.

            When the Master Servicer receives notice of termination  pursuant to
Section 7.01 or the Trustee  receives  the  resignation  of the Master  Servicer
evidenced by an Opinion of Counsel  pursuant to Section 6.04,  the Trustee shall
be the  successor  in all  respects to the Master  Servicer  in its  capacity as
master servicer under this Agreement and the  transactions set forth or provided
for  herein  and shall  have the  rights  and  powers  and be subject to all the
responsibilities,  duties and liabilities  relating thereto placed on the Master
Servicer  by the  terms  and  provisions  hereof  and in its  capacity  as  such
successor  shall have the same  limitation  of liability  herein  granted to the
Master  Servicer.  In the event  that the  Trustee is  succeeding  to the Master
Servicer as the Master Servicer, as compensation  therefor, the Trustee shall be
entitled to receive monthly such portion of the Master  Servicing Fee,  together
with  such  other  servicing  compensation  as is  agreed to at such time by the
Trustee and the Master Servicer, but in no event more than 25% thereof until the
date of final cessation of the Master Servicer's servicing activities hereunder.
Notwithstanding  the above, the Trustee may, if it shall be unwilling to so act,
or shall,  if it is unable to so act or to obtain a qualifying  bid as described
below,  appoint, or petition a court of competent  jurisdiction to appoint,  any
housing and home finance  institution,  bank or mortgage  servicing  institution
having a net worth of not less than $10,000,000 and meeting such other standards
for a successor servicer as are set forth herein, as the successor to the Master
Servicer hereunder in the assumption of all or any part of the responsibilities,
duties or liabilities of the Master Servicer hereunder;  provided, however, that
until  such a  successor  master  servicer  is  appointed  and has  assumed  the
responsibilities,  duties and liabilities of the Master Servicer hereunder,  the
Trustee  shall  continue  as the  successor  to the Master  Servicer as provided
above.  The compensation of any successor master servicer so appointed shall not
exceed the  compensation  specified  in Section  6.05  hereof.  In the event the
Trustee is  required  to solicit  bids as  provided  above,  the  Trustee  shall
solicit,   by  public   announcement,   bids  from   housing  and  home  finance
institutions,   banks  and   mortgage   servicing   institutions   meeting   the
qualifications  set forth in the  preceding  sentence  for the  purchase  of the
master  servicing  functions.  Such public  announcement  shall specify that the
successor  master  servicer  shall be  entitled to the full amount of the Master
Servicing Fee as compensation together with the other servicing  compensation in
the form of late reporting fees or otherwise as provided in Section 6.05. Within
30 days after any such public  announcement,  the Trustee  shall  negotiate  and
effect the sale,  transfer and  assignment  of the master  servicing  rights and
responsibilities  hereunder  to  the  qualified  party  submitting  the  highest
qualifying  bid.  The Trustee  shall deduct all costs and expenses of any public
announcement  and of any sale,  transfer and assignment of the servicing  rights
and  responsibilities  hereunder  from any sum  received by the Trustee from the
successor  to the  Master  Servicer  in  respect  of  such  sale,  transfer  and
assignment.  After such  deductions,  the remainder of such sum shall be paid by
the  Trustee  to the Master  Servicer  at the time of such  sale,  transfer  and
assignment to the Master  Servicer's  successor.  The Trustee and such successor
shall take such action, consistent with this Agreement, as shall be necessary to
effectuate any such succession. The Master Servicer agrees to cooperate with the
Trustee and any successor  servicer in effecting the  termination  of the Master
Servicer's  servicing  responsibilities  and rights hereunder and shall promptly
provide  the Trustee or such  successor  master  servicer,  as  applicable,  all
documents  and  records  reasonably  requested  by it to enable it to assume the
Master  Servicer's  function  hereunder and shall  promptly also transfer to the
Trustee or such successor master servicer, as applicable, all amounts which then
have been or should have been deposited in the Certificate Account by the Master
Servicer or which are thereafter received by the Master Servicer with respect to
the Mortgage Loans.  Neither the Trustee nor any other successor master servicer
shall be deemed to be in default  hereunder by reason of any failure to make, or
any delay in making, any distribution hereunder or any portion thereof caused by
(i) the failure of the Master  Servicer to deliver,  or any delay in delivering,
cash, documents or records to it, or (ii) restrictions imposed by any regulatory
authority having jurisdiction over the Master Servicer. Notwithstanding anything
to the contrary contained in Section 7.01 above or this Section 7.05, the Master
Servicer shall retain all of its rights and responsibilities  hereunder,  and no
successor  (including  the Trustee)  shall succeed  thereto,  if the  assumption
thereof by such successor would cause the rating assigned to any Certificates to
be  revoked,  downgraded  or placed  on credit  review  status  (other  than for
possible  upgrading) by either  Rating  Agency and the retention  thereof by the
Master Servicer would avert such revocation, downgrading or review.

            SECTION 7.06      NOTIFICATION TO CERTIFICATEHOLDERS.

            Upon any  termination  of the Master  Servicer or  appointment  of a
successor  master servicer,  in each case as provided herein,  the Trustee shall
give prompt  written notice thereof to  Certificateholders  at their  respective
addresses appearing in the Certificate Register.  The Trustee shall also, within
45 days after the occurrence of any Event of Default known to the Trustee,  give
written  notice  thereof to  Certificateholders  at their  respective  addresses
appearing in the Certificate  Register,  unless such Event of Default shall have
been cured or waived within said 45 day period.


<PAGE>


                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

            SECTION 8.01      DUTIES OF TRUSTEE.

            The  Trustee,  prior to the  occurrence  of an Event of Default  and
after the curing of all Events of Default which may have occurred, undertakes to
perform such duties and only such duties as are  specifically  set forth in this
Agreement.  In case an Event of Default has occurred (which has not been cured),
the Trustee,  subject to the provisions of Sections 7.01,  7.03,  7.04 and 7.05,
shall exercise such of the rights and powers vested in it by this Agreement, and
use the same  degree of care and  skill in its  exercise  as a prudent  investor
would exercise or use under the  circumstances in the conduct of such investor's
own affairs.

            The  Trustee,   upon  receipt  of  all  resolutions,   certificates,
statements,  opinions, reports, documents, orders or other instruments furnished
to the Trustee,  which are specifically required to be furnished pursuant to any
provision of this Agreement, shall examine them to determine whether they are in
the form required by this Agreement;  provided,  however, that the Trustee shall
not be responsible  for the accuracy or content of any  certificate,  statement,
instrument, report, notice or other document furnished by the Master Servicer or
the Servicers pursuant to Articles III, IV and IX.

            No  provision  of this  Agreement  shall be construed to relieve the
Trustee from liability for its own negligent  action,  its own negligent failure
to act or its own willful misconduct; provided, however, that:

               (i)Prior to the  occurrence  of an Event of Default and after the
      curing of all such Events of Default which may have  occurred,  the duties
      and  obligations of the Trustee shall be determined  solely by the express
      provisions of this  Agreement,  the Trustee shall not be liable except for
      the  performance of such duties and  obligations as are  specifically  set
      forth in this Agreement, no implied covenants or obligations shall be read
      into this  Agreement  against the Trustee and, in the absence of bad faith
      on the part of the Trustee,  the Trustee may conclusively  rely, as to the
      truth of the  statements  and the  correctness  of the opinions  expressed
      therein,  upon any certificates or opinions furnished to the Trustee,  and
      conforming to the requirements of this Agreement;

               (ii) The Trustee shall not be  personally  liable with respect to
      any action  taken,  suffered or omitted to be taken by it in good faith in
      accordance with the direction of holders of Certificates which evidence in
      the aggregate not less than 25% of the Voting Interest  represented by all
      Certificates  relating  to the time,  method and place of  conducting  any
      proceeding  for any remedy  available to the Trustee,  or  exercising  any
      trust or power conferred upon the Trustee, under this Agreement; and

               (iii) The  Trustee  shall not be liable for any error of judgment
      made in good faith by any of its Responsible Officers,  unless it shall be
      proved that the Trustee or such Responsible  Officer,  as the case may be,
      was negligent in ascertaining the pertinent facts.

            None of the provisions contained in this Agreement shall require the
Trustee to expend or risk its own funds or otherwise  incur  personal  financial
liability in the  performance of any of its duties  hereunder or in the exercise
of any of its rights or powers if there is reasonable  ground for believing that
repayment of such funds or adequate  indemnity against such risk or liability is
not reasonably assured to it.

            SECTION 8.02      CERTAIN MATTERS AFFECTING THE TRUSTEE.

            Except as otherwise provided in Section 8.01:

               (i) The Trustee may request  and rely and shall be  protected  in
      acting  or  refraining   from  acting  upon  any   resolution,   Officers'
      Certificate,  certificate of auditors or any other certificate, statement,
      instrument,  opinion, report, notice, request,  consent, order, appraisal,
      bond or other paper or  document  believed by it to be genuine and to have
      been signed or  presented by the proper party or parties and the manner of
      obtaining  consents and  evidencing  the  authorization  of the  execution
      thereof shall be subject to such reasonable regulations as the Trustee may
      prescribe;

               (ii) The Trustee may consult with counsel, and any written advice
      of such  counsel  or any  Opinion of  Counsel  shall be full and  complete
      authorization and protection in respect of any action taken or suffered or
      omitted by it hereunder in good faith and in  accordance  with such advice
      or Opinion of Counsel;

               (iii) The Trustee shall not be  personally  liable for any action
      taken,  suffered  or omitted by it in good faith and  believed by it to be
      authorized or within the discretion or rights or powers  conferred upon it
      by this Agreement;

               (iv)  Subject  to  Section   7.04,   the  Trustee  shall  not  be
      accountable, shall have no liability and makes no representation as to any
      acts or omissions  hereunder of the Master Servicer until such time as the
      Trustee may be required to act as Master Servicer pursuant to Section 7.05
      and  thereupon  only for the acts or omissions of the Trustee as successor
      Master Servicer; and

               (v) The Trustee may execute any of the trusts or powers hereunder
      or perform any duties hereunder either directly or by or through agents or
      attorneys.

            SECTION 8.03      TRUSTEE NOT REQUIRED TO MAKE INVESTIGATION.

            Prior to the  occurrence of an Event of Default  hereunder and after
the curing of all Events of Default which may have  occurred,  the Trustee shall
not be bound to make any  investigation  into the facts or matters stated in any
resolution,   certificate,   statement,  instrument,  opinion,  report,  notice,
request, consent, order, appraisal, bond, Mortgage, Mortgage Note or other paper
or document (provided the same appears regular on its face), unless requested in
writing to do so by holders of Certificates evidencing in the aggregate not less
than 51% of the  Voting  Interest  represented  by all  Certificates;  provided,
however,  that if the  payment  within a  reasonable  time to the Trustee of the
costs, expenses or liabilities likely to be incurred by it in the making of such
investigation is, in the opinion of the Trustee,  not reasonably  assured to the
Trustee  by the  security  afforded  to it by the terms of this  Agreement,  the
Trustee may require reasonable  indemnity against such expense or liability as a
condition to so proceeding.  The reasonable  expense of every such investigation
shall be paid by the Master  Servicer or, if paid by the Trustee shall be repaid
by the Master Servicer upon demand.

            SECTION 8.04      TRUSTEE NOT LIABLE FOR CERTIFICATES OR MORTGAGE
LOANS.

            The recitals  contained herein and in the  Certificates  (other than
the certificate of  authentication  on the  Certificates)  shall be taken as the
statements of the Seller,  and the Trustee assumes no  responsibility  as to the
correctness  of the  same.  The  Trustee  makes  no any  representation  for the
correctness  of the same.  The  Trustee  makes no any  representation  as to the
validity or  sufficiency  of this  Agreement  or of the  Certificates  or of any
Mortgage Loan or related  document.  Subject to Section 2.04,  the Trustee shall
not be  accountable  for  the use or  application  by the  Seller  of any of the
Certificates  or of  the  proceeds  of  such  Certificates,  or for  the  use or
application of any funds paid to the Master  Servicer in respect of the Mortgage
Loans deposited into the  Certificate  Account by the Master Servicer or, in its
capacity as trustee, for investment of any such amounts.

            SECTION 8.05      TRUSTEE MAY OWN CERTIFICATES.

            The Trustee,  and any agent thereof,  in its individual or any other
capacity,  may become the owner or pledgee of Certificates  with the same rights
it would  have if it were not  Trustee or such  agent and may  transact  banking
and/or trust business with the Seller, the Master Servicer or their Affiliates.

            SECTION 8.06      THE MASTER SERVICER TO PAY FEES AND EXPENSES.

            The Master Servicer  covenants and agrees to pay to the Trustee from
time to  time,  and  the  Trustee  shall  be  entitled  to  receive,  reasonable
compensation  (which  shall not be limited by any  provision of law in regard to
the compensation of a trustee of an express trust) for all services  rendered by
it in the  execution  of the  trusts  hereby  created  and in the  exercise  and
performance  of any of the powers and duties  hereunder  of the  Trustee and the
Master  Servicer  will pay or  reimburse  the  Trustee  upon its request for all
reasonable  expenses,  disbursements  and  advances  incurred  or  made by it in
accordance  with  any  of  the  provisions  of  this  Agreement  (including  the
reasonable compensation and the expenses and disbursements of its counsel and of
all persons not regularly in its employ) except any such expense,  disbursement,
or advance as may arise from its negligence or bad faith.

            SECTION 8.07      ELIGIBILITY REQUIREMENTS.

            The Trustee  hereunder  shall at all times (i) be a  corporation  or
association  having its principal  office in a state and city  acceptable to the
Seller,  organized and doing business under the laws of such state or the United
States of  America,  authorized  under  such laws to  exercise  corporate  trust
powers, having a combined capital and surplus of at least $50,000,000,  or shall
be a member of a bank holding system, the aggregate combined capital and surplus
of which is at least $50,000,000, provided that its separate capital and surplus
shall at all times be at least the amount specified in Section  310(a)(2) of the
Trust  Indenture Act of 1939,  (ii) be subject to  supervision or examination by
federal  or state  authority  and (iii)  have a credit  rating  or be  otherwise
acceptable to the Rating Agencies such that neither of the Rating Agencies would
reduce  their  respective  then  current  ratings of the  Certificates  (or have
provided  such  security  from  time to  time as is  sufficient  to  avoid  such
reduction) as evidenced in writing by each Rating Agency. If such corporation or
association publishes reports of condition at least annually, pursuant to law or
to the requirements of the aforesaid  supervising or examining  authority,  then
for the  purposes  of this  Section  the  combined  capital  and surplus of such
corporation  or  association  shall be deemed  to be its  combined  capital  and
surplus as set forth in its most recent  report of  condition so  published.  In
case at any time the Trustee shall cease to be eligible in  accordance  with the
provisions of this Section,  the Trustee shall resign  immediately in the manner
and with the effect specified in Section 8.08.

            SECTION 8.08      RESIGNATION AND REMOVAL.

            The Trustee may at any time resign and be discharged  from the trust
hereby created by giving  written notice of resignation to the Master  Servicer,
such  resignation to be effective upon the  appointment of a successor  trustee.
Upon receiving such notice of  resignation,  the Master  Servicer shall promptly
appoint a successor  trustee by written  instrument,  in duplicate,  one copy of
which  instrument shall be delivered to the resigning entity and one copy to its
successor.  If no successor  trustee shall have been appointed and have accepted
appointment  within 30 days after the giving of such notice of resignation,  the
resigning  Trustee may  petition  any court of  competent  jurisdiction  for the
appointment of a successor trustee.

            If at any time the Trustee  shall cease to be eligible in accordance
with the  provisions  of  Section  8.07 and shall fail to resign  after  written
request  for its  resignation  by the  Master  Servicer,  or if at any  time the
Trustee shall become incapable of acting, or an order for relief shall have been
entered in any bankruptcy or insolvency  proceeding with respect to such entity,
or a receiver  of such  entity or of its  property  shall be  appointed,  or any
public officer shall take charge or control of the Trustee or of the property or
affairs  of the  Trustee  for  the  purpose  of  rehabilitation,  conversion  or
liquidation,  or the Master  Servicer shall deem it necessary in order to change
the situs of the Trust  Estate for state tax reasons,  then the Master  Servicer
shall remove the Trustee and appoint a successor trustee by written  instrument,
in duplicate,  one copy of which instrument shall be delivered to the Trustee so
removed and one copy to the successor trustee.

            The Holders of  Certificates  evidencing  in the  aggregate not less
than 51% of the Voting Interests  represented by all  Certificates  (except that
any Certificate registered in the name of the Seller, the Master Servicer or any
affiliate  thereof  will not be taken into  account in  determining  whether the
requisite Voting Interests has been obtained) may at any time remove the Trustee
and appoint a successor by written  instrument or  instruments,  in  triplicate,
signed by such holders or their attorneys-in-fact duly authorized,  one complete
set of which instruments shall be delivered to the Master Servicer, one complete
set of which  shall be  delivered  to the entity or  entities so removed and one
complete set of which shall be delivered to the successor so appointed.

            Any  resignation  or removal of the  Trustee  and  appointment  of a
successor  pursuant  to any of the  provisions  of  this  Section  shall  become
effective upon acceptance of appointment by the successor as provided in Section
8.09.

            SECTION 8.09      SUCCESSOR.

            Any  successor  trustee  appointed as provided in Section 8.08 shall
execute,  acknowledge  and deliver to the Master Servicer and to its predecessor
trustee an instrument  accepting such appointment  hereunder,  and thereupon the
resignation or removal of the predecessor  trustee shall become  effective,  and
such  successor,  without any further act,  deed or  reconveyance,  shall become
fully  vested  with  all the  rights,  powers,  duties  and  obligations  of its
predecessor  hereunder,  with like  effect  as if  originally  named as  trustee
herein.  The  predecessor  trustee  shall  deliver  to its  successor  all Owner
Mortgage Loan Files and related  documents and  statements  held by it hereunder
(other than any Owner Mortgage Loan Files at the time held by a Custodian, which
Custodian shall become the agent of any successor  trustee  hereunder),  and the
Seller, the Master Servicer and the predecessor entity shall execute and deliver
such instruments and do such other things as may reasonably be required for more
fully and certainly  vesting and  confirming  in the successor  trustee all such
rights, powers, duties and obligations. No successor shall accept appointment as
provided in this Section  unless at the time of such  acceptance  such successor
shall be eligible under the provisions of Section 8.07

            Upon  acceptance of  appointment  by a successor as provided in this
Section, the Master Servicer shall mail notice of the succession of such trustee
hereunder  to all Holders of  Certificates  at their  addresses  as shown in the
Certificate  Register.  If the Master  Servicer fails to mail such notice within
ten days after acceptance of the successor trustee,  the successor trustee shall
cause such notice to be mailed at the expense of the Master Servicer.

            SECTION 8.10      MERGER OR CONSOLIDATION.

            Any Person into which the Trustee may be merged or converted or with
which it may be  consolidated,  to which it may sell or transfer  its  corporate
trust business and assets as a whole or  substantially  as a whole or any Person
resulting from any merger, sale, transfer,  conversion or consolidation to which
the Trustee shall be a party,  or any Person  succeeding to the business of such
entity, shall be the successor of the Trustee hereunder; provided, however, that
(i) such Person shall be eligible under the provisions of Section 8.07,  without
the  execution  or filing of any paper or any  further act on the part of any of
the parties hereto,  anything herein to the contrary  notwithstanding,  and (ii)
the  Trustee  shall  deliver  an Opinion of Counsel to the Seller and the Master
Servicer to the effect that such merger,  consolidation,  sale or transfer  will
not subject  either the  Upper-Tier  REMIC or the  Lower-Tier  REMIC to federal,
state or local tax or cause either the Upper-Tier  REMIC or the Lower-Tier REMIC
to fail to qualify  as a REMIC,  which  Opinion of Counsel  shall be at the sole
expense of the Trustee.

            SECTION 8.11      AUTHENTICATING AGENT.

            The  Trustee  may appoint an  Authenticating  Agent,  which shall be
authorized  to act on  behalf of the  Trustee  in  authenticating  Certificates.
Wherever   reference  is  made  in  this  Agreement  to  the  authentication  of
Certificates  by the Trustee or the Trustee's  countersignature,  such reference
shall be deemed to  include  authentication  on  behalf  of the  Trustee  by the
Authenticating  Agent and a certificate of authentication  executed on behalf of
the  Trustee  by the  Authenticating  Agent.  The  Authenticating  Agent must be
acceptable  to the  Seller  and the Master  Servicer  and must be a  corporation
organized and doing  business  under the laws of the United States of America or
of any state,  having a  principal  office and place of  business in a state and
city acceptable to the Seller and the Master Servicer, having a combined capital
and surplus of at least  $15,000,000,  authorized  under such laws to do a trust
business  and  subject  to  supervision  or  examination  by  federal  or  state
authorities.

            Any corporation into which the Authenticating Agent may be merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion or consolidation to which the Authenticating  Agent
shall be a party, or any corporation succeeding to the corporate agency business
of the  Authenticating  Agent,  shall be the  Authenticating  Agent  without the
execution  or filing of any paper or any  further act on the part of the Trustee
or the Authenticating Agent.

            The  Authenticating  Agent may at any time resign by giving at least
30 days' advance  written notice of  resignation to the Trustee,  the Seller and
the Master  Servicer.  The Trustee may at any time  terminate  the agency of the
Authenticating  Agent by giving  written  notice  thereof to the  Authenticating
Agent,  the  Seller  and  the  Master  Servicer.  Upon  receiving  a  notice  of
resignation  or  upon  such  a   termination,   or  in  case  at  any  time  the
Authenticating  Agent  shall  cease  to  be  eligible  in  accordance  with  the
provisions of this Section 8.11, the Trustee  promptly shall appoint a successor
Authenticating  Agent,  which shall be  acceptable to the Master  Servicer,  and
shall give  written  notice of such  appointment  to the Seller,  and shall mail
notice  of  such   appointment   to  all   Certificateholders.   Any   successor
Authenticating  Agent upon acceptance of its appointment  hereunder shall become
vested  with  all  the  rights,  powers,  duties  and  responsibilities  of  its
predecessor hereunder, with like effect as if originally named as Authenticating
Agent  herein.  No  successor  Authenticating  Agent shall be  appointed  unless
eligible under the provisions of this Section 8.11.

            The  Authenticating  Agent shall have no responsibility or liability
for any  action  taken  by it as  such  at the  direction  of the  Trustee.  Any
reasonable compensation paid to the Authenticating Agent shall be a reimbursable
expense under Section 8.06.

            SECTION 8.12      SEPARATE TRUSTEES AND CO-TRUSTEES.

            The Trustee shall have the power from time to time to appoint one or
more  persons or  corporations  to act either as  co-trustees  jointly  with the
Trustee,  or as  separate  trustees,  for  the  purpose  of  holding  title  to,
foreclosing or otherwise taking action with respect to any Mortgage Loan outside
the state where the  Trustee has its  principal  place of  business,  where such
separate  trustee or  co-trustee  is necessary  or advisable  (or the Trustee is
advised by the Master  Servicer  that such  separate  trustee or  co-trustee  is
necessary  or  advisable)  under  the laws of any  state  in  which a  Mortgaged
Property  is located or for the  purpose of  otherwise  conforming  to any legal
requirement, restriction or condition in any state in which a Mortgaged Property
is located or in any state in which any portion of the Trust  Estate is located.
The Master Servicer shall advise the Trustee when, in its good faith opinion,  a
separate  trustee or  co-trustee  is necessary or  advisable as  aforesaid.  The
separate  trustees or co-trustees so appointed shall be trustees for the benefit
of all of the Certificateholders and shall have such powers, rights and remedies
as shall be specified in the instrument of appointment;  provided, however, that
no such  appointment  shall, or shall be deemed to,  constitute the appointee an
agent of the Trustee.  The Seller and the Master Servicer shall join in any such
appointment,  but such joining shall not be necessary for the  effectiveness  of
such appointment.

            Every separate trustee and co-trustee shall, to the extent permitted
by law, be appointed and act subject to the following provisions and conditions:

               (i) all powers, duties, obligations and rights conferred upon the
      Trustee, in respect of the receipt, custody and payment of moneys shall be
      exercised solely by the Trustee;

               (ii) all other rights,  powers,  duties and obligations conferred
      or  imposed  upon the  Trustee  shall be  conferred  or  imposed  upon and
      exercised  or  performed  by the  Trustee  and such  separate  trustee  or
      co-trustee  jointly,  except  to the  extent  that  under  any  law of any
      jurisdiction  in which  any  particular  act or acts  are to be  performed
      (whether  as Trustee  hereunder  or as  successor  to the Master  Servicer
      hereunder) the Trustee shall be incompetent or unqualified to perform such
      act or acts, in which event such rights,  powers,  duties and  obligations
      (including the holding of title to the Trust Estate or any portion thereof
      in any  such  jurisdiction)  shall  be  exercised  and  performed  by such
      separate trustee or co-trustee;

               (iii)  no  separate  trustee  or  co-trustee  hereunder  shall be
      personally  liable by reason of any act or omission of any other  separate
      trustee or co-trustee hereunder; and

               (iv) the  Trustee may at any time  accept the  resignation  of or
      remove any  separate  trustee or  co-trustee  so  appointed by it, if such
      resignation or removal does not violate the other terms of this Agreement.

            Any notice,  request or other  writing given to the Trustee shall be
deemed to have been given to each of the then separate trustees and co-trustees,
as  effectively  as if given to each of them.  Every  instrument  appointing any
separate trustee, co-trustee, or custodian shall refer to this Agreement and the
conditions  of this  Article.  Each separate  trustee and  co-trustee,  upon its
acceptance of the trusts conferred, shall be vested with the estates or property
specified in its instrument of appointment,  either jointly with the Trustee, or
separately,  as may be provided  therein,  subject to all the provisions of this
Agreement,  specifically including every provision of this Agreement relating to
the conduct of,  affecting  the liability  of, or affording  protection  to, the
Trustee. Every such instrument shall be furnished to the Trustee.

            Any separate  trustee,  co-trustee,  or custodian  may, at any time,
constitute  the  Trustee,  its agent or  attorney-in-fact,  with full  power and
authority, to the extent not prohibited by law, to do any lawful act under or in
respect of this Agreement on its behalf and in its name. If any separate trustee
or co-trustee shall die, become incapable of acting,  resign or be removed,  all
of its  estates,  properties,  rights,  remedies and trusts shall vest in and be
exercised by the Trustee to the extent permitted by law, without the appointment
of a new or successor trustee.

            No separate  trustee or  co-trustee  hereunder  shall be required to
meet the  terms  of  eligibility  as a  successor  trustee  under  Section  8.07
hereunder and no notice to  Certificateholders  of the appointment thereof shall
be required under Section 8.09 hereof.

            The  Trustee  agrees to  instruct  its  co-trustees,  if any, to the
extent necessary to fulfill such entity's obligations hereunder.

            The Master  Servicer  shall pay the reasonable  compensation  of the
co-trustees to the extent,  and in accordance  with the standards,  specified in
Section 8.06 hereof.

            SECTION 8.13      APPOINTMENT OF CUSTODIANS.

            The Trustee may at any time on or after the Closing  Date,  with the
consent of the Master Servicer and the Seller, appoint one or more Custodians to
hold all or a portion of the Owner Mortgage Loan Files as agent for the Trustee,
by entering  into a  Custodial  Agreement.  Subject to this  Article  VIII,  the
Trustee  agrees to  comply  with the terms of each  Custodial  Agreement  and to
enforce the terms and provisions  thereof  against the Custodian for the benefit
of the  Certificateholders.  Each  Custodian  shall be a depository  institution
subject to  supervision  by federal  or state  authority,  shall have a combined
capital  and  surplus  of at least  $10,000,000  and  shall be  qualified  to do
business in the  jurisdiction  in which it holds any Owner  Mortgage  Loan File.
Each Custodial Agreement may be amended only as provided in Section 10.01(a).

            SECTION 8.14      TAX MATTERS; COMPLIANCE WITH REMIC PROVISIONS.

            (a) Each  of the Trustee  and the Master  Servicer  covenants  and
agrees that it shall perform its duties  hereunder in a manner  consistent  with
the REMIC Provisions and shall not knowingly take any action or fail to take any
action that would (i) affect the  determination  of the Trust Estate's status as
two separate REMICs, or (ii) cause the imposition of any federal, state or local
income,  prohibited  transaction,  contribution  or  other  tax  on  either  the
Upper-Tier REMIC, the Lower-Tier REMIC or the Trust Estate. The Master Servicer,
or,  in the  case  of any tax  return  or  other  action  required  by law to be
performed directly by the Trustee,  the Trustee shall (i) prepare or cause to be
prepared, timely cause to be signed by the Trustee and file or cause to be filed
annual federal and applicable state and local income tax returns for each of the
Upper-Tier  REMIC and the Lower-Tier  REMIC using a calendar year as the taxable
year and the accrual  method of  accounting;  (ii) in the first such federal tax
returns, make, or cause to be made, elections satisfying the requirements of the
REMIC Provisions, on behalf of the Trust Estate, to treat each of the Upper-Tier
REMIC and the Lower-Tier REMIC as a REMIC;  (iii) prepare,  execute and forward,
or cause to be prepared,  executed and forwarded,  to the Certificateholders all
information reports or tax returns required with respect to the Trust Estate, as
and when required to be provided to the Certificateholders,  and to the Internal
Revenue  Service  and  any  other  relevant  governmental  taxing  authority  in
accordance with the REMIC Provisions and any other applicable federal,  state or
local  laws,  including  without  limitation  information  reports  relating  to
"original  issue  discount"  and "market  discount" as defined in the Code based
upon the issue  prices,  prepayment  assumption  and cash flows  provided by the
Seller to the  Trustee  and  calculated  on a  monthly  basis by using the issue
prices of the Certificates;  (iv) make available  information  necessary for the
application  of  any  tax  imposed  on  transferors  of  residual  interests  to
"disqualified  organizations"  (as  defined in the REMIC  Provisions);  (v) file
Forms SS-4 and 8811 and  respond to  inquiries  by  Certificateholders  or their
nominees concerning  information returns,  reports or tax returns; (vi) maintain
(or cause to be  maintained  by the  Servicers)  such  records  relating  to the
Upper-Tier  REMIC and the  Lower-Tier  REMIC,  including  but not limited to the
income, expenses, individual Mortgage Loans (including REO Mortgage Loans, other
assets and  liabilities  of each REMIC,  and the fair market  value and adjusted
basis of the  property  of each REMIC  determined  at such  intervals  as may be
required by the Code,  as may be necessary to prepare the  foregoing  returns or
information reports; (vii) exercise reasonable care not to allow the creation of
any  "interests" in either the Upper-Tier  REMIC or the Lower-Tier  REMIC within
the  meaning  of  Code  Section  860D(a)(2)  other  than  the  interests  in the
Upper-Tier REMIC  represented by the Class A-1, Class A-2, Class A-3, Class A-4,
Class A-5, Class A-6,  Class A-7, Class A-8, Class A-9, Class A-10,  Class A-11,
Class A-12,  Class A-13,  Class A-14,  Class A-PO and Class A-R Certificates and
the  Class  B-1,  Class  B-2,  Class  B-3,  Class  B-4,  Class B-5 and Class B-6
Certificates and the interests in the Lower-Tier REMIC  represented by the Class
A-L1, Class A-L5, Class A-L7, Class A-L8, Class A-L12, Class A-L14, Class A-LPO,
Class A-LUR,  Class B-L1,  Class B-L2,  Class B-L3,  Class B-L4,  Class B-L5 and
Class B-L6 Interests and the Class A-LR Certificate;  (viii) exercise reasonable
care not to allow the  occurrence of any  "prohibited  transactions"  within the
meaning of Code Section 860F(a),  unless the Master Servicer shall have provided
an Opinion of Counsel to the Trustee that such  occurrence  would not (a) result
in a  taxable  gain,  (b)  otherwise  subject  either  the  Upper-Tier  REMIC or
Lower-Tier  REMIC or the Trust  Estate  to tax or (c) cause the Trust  Estate to
fail to qualify as two separate  REMICs;  (ix) exercise  reasonable  care not to
allow either the Upper-Tier REMIC or the Lower-Tier REMIC to receive income from
the  performance  of  services  or from  assets  not  permitted  under the REMIC
Provisions to be held by a REMIC;  (x) pay (on behalf of the Upper-Tier REMIC or
the Lower-Tier REMIC) the amount of any federal income tax,  including,  without
limitation,  prohibited  transaction taxes, taxes on net income from foreclosure
property,  and taxes on certain  contributions to a REMIC after the Startup Day,
imposed on the Upper-Tier  REMIC or Lower-Tier  REMIC,  as the case may be, when
and as the same shall be due and payable (but such obligation  shall not prevent
the Master Servicer or any other appropriate Person from contesting any such tax
in  appropriate  proceedings  and shall not  prevent  the Master  Servicer  from
withholding or depositing  payment of such tax, if permitted by law, pending the
outcome of such proceedings);  and (xi) if required or permitted by the Code and
applicable  law, act as "tax matters  person" for the  Upper-Tier  REMIC and the
Lower-Tier REMIC within the meaning of Treasury Regulations Section 1.860F-4(d),
and the Master Servicer is hereby designated as agent of the Class A-R and Class
A-LR  Certificateholders  for such purpose (or if the Master  Servicer is not so
permitted, the Holders of the Class A-R and Class A-LR Certificates shall be tax
matters persons for the Upper-Tier REMIC and the Lower-Tier REMIC, respectively,
in accordance with the REMIC Provisions).  The Master Servicer shall be entitled
to be  reimbursed  pursuant to Section 3.02 for any taxes paid by it pursuant to
clause (x) of the preceding  sentence,  except to the extent that such taxes are
imposed as a result of the bad faith, willful misfeasance or gross negligence of
the Master Servicer in the performance of its obligations hereunder. The Trustee
shall sign the tax  returns  referred  to in clause (i) of the second  preceding
sentence.

            In order to enable the Master  Servicer or the Trustee,  as the case
may be, to perform its duties as set forth above,  the Seller shall provide,  or
cause to be provided,  to the Master  Servicer within ten days after the Closing
Date all information or data that the Master Servicer  determines to be relevant
for tax  purposes to the  valuations  and offering  prices of the  Certificates,
including,  without  limitation,  the price,  yield,  prepayment  assumption and
projected cash flows of each Class of Certificates and the Mortgage Loans in the
aggregate.  Thereafter,  the Seller shall provide to the Master  Servicer or the
Trustee, as the case may be, promptly upon request therefor, any such additional
information or data that the Master Servicer or the Trustee, as the case may be,
may from time to time request in order to enable the Master  Servicer to perform
its duties as set forth above. The Seller hereby indemnifies the Master Servicer
or the Trustee, as the case may be, for any losses, liabilities, damages, claims
or expenses of the Master  Servicer  or the Trustee  arising  from any errors or
miscalculations  by the Master Servicer or the Trustee  pursuant to this Section
that  result  from any  failure  of the  Seller  to  provide,  or to cause to be
provided, accurate information or data to the Master Servicer or the Trustee, as
the case may be, on a timely basis.  The Master Servicer hereby  indemnifies the
Seller and the Trustee for any losses, liabilities,  damages, claims or expenses
of the  Seller  or the  Trustee  arising  from  the  Master  Servicer's  willful
misfeasance,  bad faith or gross  negligence  in  preparing  any of the federal,
state and local tax returns of either  REMIC as  described  above.  In the event
that the Trustee  prepares  any of the  federal,  state and local tax returns of
either REMIC as described above,  the Trustee hereby  indemnifies the Seller and
the Master Servicer for any losses, liabilities,  damages, claims or expenses of
the  Seller  or  the  Master  Servicer   arising  from  the  Trustee's   willful
misfeasance, bad faith or negligence in connection with such preparation.

            (b) Notwithstanding  anything in this  Agreement to the  contrary,
each of the  Master  Servicer  and the  Trustee  shall  pay from its own  funds,
without  any  right  of  reimbursement   therefor,  the  amount  of  any  costs,
liabilities  and  expenses  incurred  by the Trust  Estate  (including,  without
limitation,  any and all federal,  state or local taxes, including taxes imposed
on "prohibited  transactions" within the meaning of the REMIC Provisions) if and
to the extent that such costs,  liabilities and expenses arise from a failure of
the Master  Servicer or the Trustee to,  respectively,  perform its  obligations
under this Section 8.14.

            SECTION 8.15      MONTHLY ADVANCES.

            In the event that Norwest  Mortgage fails to make a Periodic Advance
required to be made pursuant to the Norwest Servicing Agreement on or before the
Distribution  Date,  the  Trustee  shall make a Periodic  Advance as required by
Section 3.03 hereof;  provided,  however,  the Trustee  shall not be required to
make such Periodic  Advances if prohibited by law or if it determines  that such
Periodic  Advance  would be a  Nonrecoverable  Advance.  With  respect  to those
Periodic Advances which should have been made by Norwest  Mortgage,  the Trustee
shall be entitled,  pursuant to Section  3.02(a)(i),  (ii) or (v) hereof,  to be
reimbursed from the Certificate Account for Periodic Advances and Nonrecoverable
Advances made by it.

            SECTION 8.16      TRUSTEE   COVENANTS   CONCERNING   YEAR   2000
COMPLIANCE.

            The Trustee  covenants that it is working to modify its computer and
other  systems  used  in the  performance  of its  duties  as  trustee  for  the
Certificates to operate in a manner such that, on and after January 1, 2000, the
Trustee can perform its duties in accordance with the terms of this Agreement.


<PAGE>


                                   ARTICLE IX

                                   TERMINATION

            SECTION 9.01      TERMINATION  UPON  PURCHASE  BY THE  SELLER  OR
LIQUIDATION OF ALL MORTGAGE LOANS.

            Subject  to   Section   9.02,   the   respective   obligations   and
responsibilities  of the Seller,  the Master  Servicer  and the Trustee  created
hereby (other than the obligation of the Trustee to make certain  payments after
the Final  Distribution  Date to  Certificateholders  and the  obligation of the
Master  Servicer to send certain  notices as  hereinafter  set forth and the tax
reporting  obligations under Sections 4.05 and 8.14 hereof) shall terminate upon
the last action  required  to be taken by the Trustee on the Final  Distribution
Date  pursuant to this Article IX  following  the earlier of (i) the purchase by
the Seller of all  Mortgage  Loans and all  property  acquired in respect of any
Mortgage  Loan  remaining in the Trust Estate at a price equal to the sum of (x)
100% of the unpaid  principal  balance of each Mortgage Loan (other than any REO
Mortgage Loan) as of the Final  Distribution Date, and (y) the fair market value
of the Mortgaged Property related to any REO Mortgage Loan (as determined by the
Master  Servicer  as of the close of  business  on the third  Business  Day next
preceding  the date upon which  notice of any such  termination  is furnished to
Certificateholders  pursuant to the third paragraph of this Section 9.01),  plus
any accrued and unpaid interest  through the last day of the month preceding the
month of such purchase at the applicable  Mortgage  Interest Rate less any Fixed
Retained Yield on each Mortgage Loan  (including any REO Mortgage Loan) and (ii)
the final payment or other  liquidation (or any advance with respect thereto) of
the last Mortgage Loan remaining in the Trust Estate (including for this purpose
the  discharge  of any  Mortgagor  under a  defaulted  Mortgage  Loan on which a
Servicer is not obligated to foreclose due to  environmental  impairment) or the
disposition  of all  property  acquired  upon  foreclosure  or  deed  in lieu of
foreclosure of any Mortgage Loan; provided,  however, that in no event shall the
trust created hereby  continue  beyond the expiration of 21 years from the death
of the  last  survivor  of the  descendants  of  Joseph  P.  Kennedy,  the  late
ambassador of the United  States to the Court of St.  James,  living on the date
hereof.

            The right of the  Seller  to  purchase  all the  assets of the Trust
Estate pursuant to clause (i) of the preceding  paragraph are subject to Section
9.02 and conditioned upon the Pool Scheduled  Principal  Balance of the Mortgage
Loans as of the Final  Distribution Date being less than the amount set forth in
Section 11.22. In the case of any purchase by the Seller pursuant to said clause
(i),  the Seller  shall  provide to the  Trustee the  certification  required by
Section 3.04 and the Trustee and the Custodian shall, promptly following payment
of the  purchase  price,  release to the Seller  the Owner  Mortgage  Loan Files
pertaining to the Mortgage Loans being purchased.

            Notice of any termination,  specifying the Final  Distribution  Date
(which shall be a date that would  otherwise be a Distribution  Date) upon which
the  Certificateholders  may  surrender  their  Certificates  to the Trustee for
payment of the final  distribution and cancellation,  shall be given promptly by
the Master Servicer (if it is exercising its right to purchase the assets of the
Trust   Estate)  or  by  the   Trustee   (in  any  other   case)  by  letter  to
Certificateholders  mailed not earlier than the 15th day of the month  preceding
the month of such final distribution and not later than the twentieth day of the
month of such final distribution specifying (A) the Final Distribution Date upon
which  final  payment of the  Certificates  will be made upon  presentation  and
surrender  of  Certificates  at the  office  or agency  of the  Trustee  therein
designated,  (B) the  amount of any such final  payment  and (C) that the Record
Date otherwise applicable to such Distribution Date is not applicable,  payments
being made (except in the case of any Class A Certificate surrendered on a prior
Distribution Date pursuant to Section 4.01) only upon presentation and surrender
of the Certificates at the office or agency of the Trustee therein specified. If
the  Master  Servicer  is  obligated  to give  notice to  Certificateholders  as
aforesaid,  it  shall  give  such  notice  to the  Trustee  and the  Certificate
Registrar at the time such notice is given to  Certificateholders.  In the event
such notice is given by the Master  Servicer,  the Master Servicer shall deposit
in  the  Certificate  Account  on or  before  the  Final  Distribution  Date  in
immediately available funds an amount equal to the purchase price for the assets
of the Trust  Estate  computed  as above  provided.  Failure  to give  notice of
termination  as described  herein shall not entitle a  Certificateholder  to any
interest beyond the interest payable on the Final Distribution Date.

            Upon  presentation  and surrender of the  Certificates,  the Trustee
shall cause to be distributed to  Certificateholders  on the Final  Distribution
Date in proportion to their respective  Percentage  Interests an amount equal to
(i) as to the Classes of Class A Certificates,  the respective Principal Balance
together  with any related  Class A Unpaid  Interest  Shortfall  and one month's
interest in an amount equal to the respective  Interest Accrual Amount,  (ii) as
to the  Classes  of  Class B  Certificates,  the  respective  Principal  Balance
together  with any related  Class B Unpaid  Interest  Shortfall  and one month's
interest in an amount equal to the respective  Interest Accrual Amount and (iii)
as to the Class A-R and Class A-LR  Certificates,  the  amounts,  if any,  which
remain on deposit in the  Upper-Tier  Certificate  Account  and the  Certificate
Account,  respectively  (other  than  amounts  retained  to meet  claims)  after
application  pursuant  to clauses  (i),  (ii) and (iii) above and payment to the
Master  Servicer of any amounts it is entitled  as  reimbursement  or  otherwise
hereunder. Such amount shall be distributed in respect of interest and principal
in respect of the  Uncertificated  Lower-Tier  Interests  in the same amounts as
distributed  to their  Corresponding  Upper-Tier  Class or Classes in the manner
specified in Section  4.01(a)(ii).  Notwithstanding the foregoing,  if the price
paid pursuant to clause (i) of the first  paragraph of this Section 9.01,  after
reimbursement  to the  Servicers,  the Master  Servicer  and the  Trustee of any
Periodic  Advances,  is  insufficient  to pay in full the  amounts  set forth in
clauses (i), (ii) and (iii) of this paragraph,  then any shortfall in the amount
available for distribution to Certificateholders shall be allocated in reduction
of the amounts  otherwise  distributable on the Final  Distribution  Date in the
same manner as Realized  Losses are allocated  pursuant to Sections  4.02(b) and
4.02(g) hereof.  Such  distribution on the Final  Distribution  Date shall be in
lieu of the distribution otherwise required to be made on such Distribution Date
in respect of each Class of Certificates.

            In the event that all of the Certificateholders  shall not surrender
their  Certificates  for final  payment and  cancellation  within  three  months
following the Final  Distribution Date, the Trustee shall on such date cause all
funds, if any, in the Certificate  Account not distributed in final distribution
to  Certificateholders  to be withdrawn  therefrom and credited to the remaining
Certificateholders by depositing such funds in a separate escrow account for the
benefit of such Certificateholders, and the Master Servicer (if it exercised its
right to purchase  the assets of the Trust  Estate) or the Trustee (in any other
case) shall give a second written notice to the remaining  Certificateholders to
surrender their Certificates for cancellation and receive the final distribution
with respect  thereto.  If within  three months after the second  notice all the
Certificates  shall not have been surrendered for cancellation,  the Trustee may
take appropriate  steps, or may appoint an agent to take  appropriate  steps, to
contact  the  remaining   Certificateholders   concerning   surrender  of  their
Certificates,  and the cost thereof shall be paid out of the funds on deposit in
such escrow account.

            SECTION 9.02      ADDITIONAL TERMINATION REQUIREMENTS.

            In the event of a termination  of the Trust Estate upon the exercise
by the Seller of its  purchase  option as  provided in Section  9.01,  the Trust
Estate  shall  be  terminated  in  accordance  with  the  following   additional
requirements,  unless  the  Trustee  has  received  an Opinion of Counsel to the
effect that any other  manner of  termination  (i) will  constitute a "qualified
liquidation"   of  the  Trust   Estate   within  the  meaning  of  Code  Section
860F(a)(4)(A)  and (ii) will not  subject  either  the  Upper-Tier  REMIC or the
Lower-Tier  REMIC to federal tax or cause the Trust Estate to fail to qualify as
two separate REMICs at any time that any Certificates are outstanding:

               (i)The  notice given by the Master  Servicer  under  Section 9.01
      shall  provide  that such  notice  constitutes  the  adoption of a plan of
      complete  liquidation of the Upper-Tier  REMIC and the Lower-Tier REMIC as
      of the date of such notice  (or,  if earlier,  the date on which the first
      such notice is mailed to  Certificateholders).  The Master  Servicer shall
      also specify such date in a statement attached to the final tax returns of
      the Upper-Tier REMIC and the Lower-Tier REMIC; and

               (ii) At or after the time of  adoption of such a plan of complete
      liquidation  and at or prior to the Final  Distribution  Date, the Trustee
      shall sell all of the assets of the Trust Estate to the Seller for cash at
      the purchase  price  specified in Section 9.01 and shall  distribute  such
      cash within 90 days of such  adoption in the manner  specified  in Section
      9.01.


<PAGE>


                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

            SECTION 10.01     AMENDMENT.

            (a) This  Agreement or any Custodial Agreement may be amended from
time to time by the Seller, the Master Servicer, the Trust Administrator and the
Trustee,  without the consent of any of the Certificateholders,  (i) to cure any
ambiguity or mistake,  (ii) to correct or supplement  any  provisions  herein or
therein which may be inconsistent  with any other provisions  herein or therein,
(iii) to modify,  eliminate  or add to any of its  provisions  to such extent as
shall be  necessary  to maintain  the  qualification  of the Trust Estate as two
separate REMICs at all times that any  Certificates  are outstanding or to avoid
or minimize the risk of the  imposition  of any federal tax on the Trust Estate,
the Upper-Tier  REMIC or the Lower-Tier REMIC pursuant to the Code that would be
a claim against the Trust Estate,  provided that (a) the Trustee has received an
Opinion of Counsel to the effect that such action is  necessary  or desirable to
maintain such  qualification  or to avoid or minimize the risk of the imposition
of any such tax and (b) such action  shall not, as  evidenced by such Opinion of
Counsel,  adversely  affect  in  any  material  respect  the  interests  of  any
Certificateholder,  (iv) to change the timing and/or nature of deposits into the
Upper-Tier  Certificate Account and Lower-Tier Certificate Account provided that
(a) such change  shall not,  as  evidenced  by an Opinion of Counsel,  adversely
affect in any material  respect the interests of any  Certificateholder  and (b)
such  change  shall  not  adversely  affect  the  then-current   rating  of  the
Certificates  as evidenced  by a letter from each Rating  Agency to such effect,
(v) to modify,  eliminate or add to the  provisions of Section 5.02 or any other
provisions hereof  restricting  transfer of the Certificates,  provided that the
Master  Servicer  for  purposes  of  Section  5.02  has  determined  in its sole
discretion that any such  modifications to this Agreement will neither adversely
affect the rating on the  Certificates  nor give rise to a risk that  either the
Upper-Tier or Lower-Tier REMIC or any of the Certificateholders  will be subject
to a tax caused by a transfer to a non-permitted transferee and (vi) to make any
other  provisions  with  respect  to  matters or  questions  arising  under this
Agreement or such Custodial Agreement which shall not be materially inconsistent
with the provisions of this  Agreement,  provided that such action shall not, as
evidenced by an Opinion of Counsel, adversely affect in any material respect the
interests of any Certificateholder.

            This  Agreement or any Custodial  Agreement may also be amended from
time to time by the Seller, the Master Servicer, the Trust Administrator and the
Trustee  with the  consent of the  Holders  of  Certificates  evidencing  in the
aggregate not less than 66-2/3% of the aggregate  Voting Interests of each Class
of Certificates  affected thereby for the purpose of adding any provisions to or
changing in any manner or eliminating any of the provisions of this Agreement or
such Custodial Agreement or of modifying in any manner the rights of the Holders
of Certificates of such Class;  provided,  however, that no such amendment shall
(i)  reduce in any  manner  the  amount  of, or delay the  timing  of,  payments
received  on  Mortgage  Loans  which  are  required  to be  distributed  on  any
Certificate  without  the  consent  of the  Holder  of  such  Certificate,  (ii)
adversely  affect  in any  material  respect  the  interest  of the  Holders  of
Certificates  of any Class in a manner  other  than as  described  in clause (i)
hereof without the consent of Holders of Certificates of such Class  evidencing,
as to such Class,  Voting  Interests  aggregating not less than 66-2/3% or (iii)
reduce the  aforesaid  percentage  of  Certificates  of any Class the Holders of
which are required to consent to any such amendment,  without the consent of the
Holders of all Certificates of such Class then outstanding.

            Notwithstanding  any  contrary  provision  of  this  Agreement,  the
Trustee  shall not consent to any  amendment to this  Agreement  unless it shall
have first received an Opinion of Counsel to the effect that such amendment will
not subject either the Upper-Tier  REMIC or the Lower-Tier REMIC to tax or cause
either  the  Upper-Tier  REMIC or the  Lower-Tier  REMIC to fail to qualify as a
REMIC at any time that any Certificates are outstanding.

            Promptly after the execution of any amendment  requiring the consent
of  Certificateholders,  the Trustee shall furnish  written  notification of the
substance of such amendment to each Certificateholder.

            It shall not be  necessary  for the  consent  of  Certificateholders
under this  Section  10.01(a) to approve  the  particular  form of any  proposed
amendment,  but it  shall  be  sufficient  if such  consent  shall  approve  the
substance  thereof.  The manner of obtaining such consents and of evidencing the
authorization of the execution thereof by Certificateholders shall be subject to
such reasonable regulations as the Trustee may prescribe.

            (b) Notwithstanding  any contrary provision of this Agreement, the
Master  Servicer may,  from time to time,  amend  Schedule I hereto  without the
consent of any  Certificateholder  or the Trustee;  provided,  however, (i) that
such amendment  does not conflict with any  provisions of the related  Servicing
Agreement, (ii) that the related Servicing Agreement provides for the remittance
of each type of Unscheduled  Principal Receipts received by such Servicer during
the Applicable  Unscheduled  Principal Receipt Period (as so amended) related to
each  Distribution Date to the Master Servicer no later than the 24th day of the
month in which such  Distribution  Date occurs and (iii) that such  amendment is
for the purpose of:

               (i) changing the  Applicable   Unscheduled   Principal  Receipt
      Period for Exhibit F-1  Mortgage  Loans to a  Mid-Month  Receipt  Period
      with respect to all Unscheduled Principal Receipts; or

               (ii) changing the Applicable Unscheduled Principal Receipt Period
      for all Mortgage  Loans  serviced by any  Servicer to a Mid-Month  Receipt
      Period with respect to Full Unscheduled  Principal Receipts and to a Prior
      Month  Receipt  Period  with  respect  to  Partial  Unscheduled  Principal
      Receipts.

            A copy of any  amendment  to  Schedule  I pursuant  to this  Section
10.01(b) shall be promptly forwarded to the Trustee.

            SECTION 10.02     RECORDATION OF AGREEMENT.

            This  Agreement  (or  an  abstract  hereof,  if  acceptable  to  the
applicable recording office) is subject to recordation in all appropriate public
offices  for  real  property  records  in all  the  towns  or  other  comparable
jurisdictions in which any or all of the Mortgaged Properties are situated,  and
in any other  appropriate  public office or elsewhere,  such  recordation  to be
effected by the Master  Servicer and at its expense on direction by the Trustee,
but only upon direction  accompanied by an Opinion of Counsel to the effect that
such  recordation  materially  and  beneficially  affects the  interests  of the
Certificateholders.

            For the purpose of facilitating the recordation of this Agreement as
herein  provided  and  for  other  purposes,  this  Agreement  may  be  executed
simultaneously in any number of counterparts,  each of which  counterparts shall
be deemed to be an original,  and such counterparts shall constitute but one and
the same instrument.

            SECTION 10.03     LIMITATION ON RIGHTS OF CERTIFICATEHOLDERS.

            The death or incapacity of any  Certificateholder  shall not operate
to   terminate   this   Agreement  or  the  Trust   Estate,   nor  entitle  such
Certificateholder's  legal  representatives  or heirs to claim an  accounting or
take any action or  proceeding in any court for a partition or winding up of the
Trust Estate,  nor otherwise  affect the rights,  obligations and liabilities of
the parties hereto or any of them.

            Except as otherwise expressly provided herein, no Certificateholder,
solely by virtue of its status as a  Certificateholder,  shall have any right to
vote or in any manner  otherwise  control the  operation  and  management of the
Trust Estate,  or the  obligations  of the parties  hereto,  nor shall  anything
herein set forth, or contained in the terms of the Certificates, be construed so
as to constitute the Certificateholders from time to time as partners or members
of an association, nor shall any Certificateholder be under any liability to any
third  person by reason of any action  taken by the  parties  to this  Agreement
pursuant to any provision hereof.

            No   Certificateholder,   solely  by   virtue   of  its   status  as
Certificateholder,  shall  have  any  right  by  virtue  or by  availing  of any
provision of this  Agreement  to institute  any suit,  action or  proceeding  in
equity or at law upon or under or with  respect to this  Agreement,  unless such
Holder  previously  shall have given to the Trustee a written  notice of default
and of the continuance  thereof, as hereinbefore  provided,  and unless also the
Holders of  Certificates  evidencing  not less than 25% of the  Voting  Interest
represented by all Certificates shall have made written request upon the Trustee
to  institute  such  action,  suit  or  proceeding  in its own  name as  Trustee
hereunder and shall have offered to the Trustee such reasonable  indemnity as it
may require against the cost, expenses and liabilities to be incurred therein or
thereby, and the Trustee, for 60 days after its receipt of such notice,  request
and offer of  indemnity,  shall have  neglected or refused to institute any such
action,  suit or  proceeding;  it  being  understood  and  intended,  and  being
expressly    covenanted   by   each    Certificateholder    with   every   other
Certificateholder  and the Trustee,  that no one or more Holders of Certificates
shall  have any right in any manner  whatever  by virtue or by  availing  of any
provision of this  Agreement to affect,  disturb or prejudice  the rights of the
Holders  of any  other of such  Certificates,  or to  obtain  or seek to  obtain
priority over or  preference  to any other such Holder,  or to enforce any right
under this  Agreement,  except in the manner herein provided and for the benefit
of all Certificateholders.  For the protection and enforcement of the provisions
of this  Section,  each and every  Certificateholder  and the  Trustee  shall be
entitled to such relief as can be given either at law or in equity.

            SECTION 10.04     GOVERNING LAW; JURISDICTION.

            This Agreement shall be construed in accordance with the laws of the
State of New York  (without  regard to  conflicts of laws  principles),  and the
obligations, rights and remedies of the parties hereunder shall be determined in
accordance with such laws.

            SECTION 10.05     NOTICES.

            All  demands,  notices  and  communications  hereunder  shall  be in
writing and shall be deemed to have been duly given if  personally  delivered at
or mailed by certified or registered mail,  return receipt  requested (i) in the
case of the Seller,  to Norwest Asset Securities  Corporation,  7485 New Horizon
Way,  Frederick,  Maryland 21703,  Attention:  Chief Executive Officer,  or such
other  address as may  hereafter  be  furnished  to the Master  Servicer and the
Trustee in writing by the Seller,  (ii) in the case of the Master  Servicer,  to
Norwest Bank Minnesota,  National Association,  7485 New Horizon Way, Frederick,
Maryland 21703, Attention: Vice President or such other address as may hereafter
be furnished to the Seller and the Trustee in writing by the Master Servicer and
(iii) in the case of the Trustee,  to the Corporate Trust Office,  or such other
address as may  hereafter be furnished to the Seller and the Master  Servicer in
writing by the Trustee, in each case Attention:  Corporate Trust Department. Any
notice required or permitted to be mailed to a Certificateholder  shall be given
by first class mail, postage prepaid,  at the address of such Holder as shown in
the  Certificate  Register.  Any notice  mailed or  transmitted  within the time
prescribed in this Agreement  shall be  conclusively  presumed to have been duly
given,  whether or not the addressee  receives such notice,  provided,  however,
that any  demand,  notice or  communication  to or upon the  Seller,  the Master
Servicer or the Trustee shall not be effective until received.

            For all  purposes  of  this  Agreement,  in the  absence  of  actual
knowledge by an officer of the Master Servicer, the Master Servicer shall not be
deemed to have  knowledge  of any act or failure to act of any  Servicer  unless
notified   thereof   in   writing   by  the   Trustee,   such   Servicer   or  a
Certificateholder.

            SECTION 10.06     SEVERABILITY OF PROVISIONS.

            If any one or more of the covenants, agreements, provisions or terms
of this Agreement  shall be for any reason  whatsoever  held invalid,  then such
covenants,  agreements,  provisions or terms shall be deemed  severable from the
remaining covenants, agreements, provisions or terms of this Agreement and shall
in no way affect the validity or  enforceability of the other provisions of this
Agreement or of the Certificates or the rights of the Holders thereof.

            SECTION 10.07     SPECIAL NOTICES TO RATING AGENCIES.

            (a) The  Trustee shall give prompt notice to each Rating Agency of
the occurrence of any of the following events of which it has notice:

               (i) any   amendment    to   this    Agreement    pursuant    to
      Section 10.01(a);

               (ii)  any  sale  or  transfer  of the  Class B  Certificates
      pursuant to Section 5.02 to an affiliate of the Seller;

               (iii) any  assignment  by the Master  Servicer  of its rights and
      delegation of its duties pursuant to Section 6.06;

               (iv)  any  resignation  of the Master  Servicer  pursuant to
      Section 6.04;

               (v) the occurrence of any of the Events of Default  described in
      Section 7.01;

               (vi) any  notice  of   termination   given  to  the  Master
      Servicer pursuant to Section 7.01;

               (vii) the  appointment  of any  successor to the Master  Servicer
      pursuant to Section 7.05; or

               (viii) the making of a final payment pursuant to Section 9.01.

            (b) The  Master  Servicer  shall give prompt notice to each Rating
Agency of the occurrence of any of the following events:

               (i) the appointment of a Custodian pursuant to Section 2.02;

               (ii)  the resignation or removal of the Trustee  pursuant to
      Section 8.08;

               (iii) the appointment of a successor  trustee pursuant to Section
      8.09; or

               (iv)  the  sale,  transfer  or  other  disposition  in  a  single
      transaction of 50% or more of the equity interests in the Master Servicer.

            (c) The Master Servicer shall deliver to each Rating Agency:

               (i) reports prepared pursuant to Section 3.05; and

               (ii) statements prepared pursuant to Section 4.04.

            SECTION 10.08     COVENANT OF SELLER.

            The  Seller  shall not amend  Article  Third of its  Certificate  of
Incorporation without the prior written consent of each Rating Agency rating the
Certificates.

            SECTION 10.09     RECHARACTERIZATION.

            The Parties  intend the  conveyance  by the Seller to the Trustee of
all of its right,  title and interest in and to the Mortgage  Loans  pursuant to
this Agreement to constitute a purchase and sale and not a loan. Notwithstanding
the  foregoing,  to the extent that such  conveyance is held not to constitute a
sale under applicable law, it is intended that this Agreement shall constitute a
security  agreement under  applicable law and that the Seller shall be deemed to
have  granted to the Trustee a first  priority  security  interest in all of the
Seller's right, title and interest in and to the Mortgage Loans.


<PAGE>


                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

            SECTION 11.01     CLASS A FIXED PASS-THROUGH RATE.

            The Class A Fixed Pass-Through Rate is 6.500% per annum.

            SECTION 11.02     CUT-OFF DATE.

            The Cut-Off Date for the Certificates is May 1, 1999.

            SECTION 11.03     CUT-OFF DATE AGGREGATE PRINCIPAL BALANCE.

            The Cut-Off Date Aggregate Principal Balance is $300,163,218.54.

            SECTION 11.04     ORIGINAL CLASS A PERCENTAGE.

            The Original Class A Percentage is 95.99131929%.

            SECTION 11.05     ORIGINAL  PRINCIPAL  BALANCES OF THE CLASSES OF
CLASS A CERTIFICATES.

            As to the following  Classes of Class A Certificates,  the Principal
Balance of such Class as of the Cut-Off Date, as follows:

                                            Original
                      Class             Principal Balance
                      -----             -----------------

                    Class A-1            $10,000,000.00
                    Class A-2            $13,000,000.00
                    Class A-3            $17,119,000.00
                    Class A-4            $21,297,000.00
                    Class A-5            $24,748,000.00
                    Class A-7           $110,625,000.00
                    Class A-8             $3,929,000.00
                    Class A-9             $3,929,000.00
                    Class A-10           $44,250,000.00
                    Class A-11           $12,828,000.00
                    Class A-12            $4,185,000.00
                    Class A-13           $18,605,000.00
                    Class A-14            $2,992,000.00
                    Class A-PO              $649,468.62
                    Class A-R                   $100.00
                    Class A-LR                  $100.00

            SECTION 11.05(A)  ORIGINAL CLASS A-6 NOTIONAL AMOUNT.

            The Original Class A-6 Notional Amount is $24,748,000.00.

            SECTION 11.06     ORIGINAL CLASS A NON-PO PRINCIPAL BALANCE.

            The Original Class A Non-PO Principal Balance is $287,507,200.00.

            SECTION 11.07     ORIGINAL SUBORDINATED PERCENTAGE.

            The Original Subordinated Percentage is 4.00868071%.

            SECTION 11.08     ORIGINAL CLASS B-1 PERCENTAGE.

            The Original Class B-1 Percentage is 2.10441090%.

            SECTION 11.09     ORIGINAL CLASS B-2 PERCENTAGE.

            The Original Class B-2 Percentage is 0.80163265%.

            SECTION 11.10     ORIGINAL CLASS B-3 PERCENTAGE.

            The Original Class B-3 Percentage is 0.35090209%.

            SECTION 11.11     ORIGINAL CLASS B-4 PERCENTAGE.

            The Original Class B-4 Percentage is 0.35056821%.

            SECTION 11.12     ORIGINAL CLASS B-5 PERCENTAGE.

            The Original Class B-5 Percentage is 0.17060986%.

            SECTION 11.13     ORIGINAL CLASS B-6 PERCENTAGE.

            The Original Class B-6 Percentage is 0.23055700%.

            SECTION 11.14     ORIGINAL CLASS B PRINCIPAL BALANCE.

            The Original Class B Principal Balance is $12,006,549.92.

            SECTION 11.15     ORIGINAL  PRINCIPAL  BALANCES OF THE CLASSES OF
CLASS B CERTIFICATES.

            As to the following  Classes of Class B  Certificate,  the Principal
Balance of such Class as of the Cut-Off Date, is as follows:
                                    Original
              Class              Principal Balance
              -----              -----------------

            Class B-1             $6,303,000.00
            Class B-2             $2,401,000.00
            Class B-3             $1,051,000.00
            Class B-4             $1,050,000.00
            Class B-5               $511,000.00


            SECTION 11.16     ORIGINAL CLASS B-1 FRACTIONAL INTEREST.

            The Original Class B-1 Fractional Interest is 1.90426981%.

            SECTION 11.17     ORIGINAL CLASS B-2 FRACTIONAL INTEREST.

            The Original Class B-2 Fractional Interest is 1.10263716%.

            SECTION 11.18     ORIGINAL CLASS B-3 FRACTIONAL INTEREST.

            The Original Class B-3 Fractional Interest is 0.75173507%.

            SECTION 11.19     ORIGINAL CLASS B-4 FRACTIONAL INTEREST.

            The Original Class B-4 Fractional Interest is 0.40116686%.

            SECTION 11.20     ORIGINAL CLASS B-5 FRACTIONAL INTEREST.

            The Original  B-5 Fractional Interest is 0.23055700%.

            SECTION 11.21     CLOSING DATE.

            The Closing Date is May 28, 1999.

            SECTION 11.22     RIGHT TO PURCHASE.

            The  right of the  Seller  to  purchase  all of the  Mortgage  Loans
pursuant to Section 9.01 hereof  shall be  conditioned  upon the Pool  Scheduled
Principal Balance of the Mortgage Loans being less than  $30,016,321.85  (10% of
the Cut-Off Date Aggregate Principal Balance) at the time of any such purchase.

            SECTION 11.23     WIRE TRANSFER ELIGIBILITY.

            With  respect to the Class A (other than the Class A-6,  Class A-PO,
Class A-R and Class A-LR Certificates) and the Class B Certificates, the minimum
Denomination  eligible for wire transfer on each  Distribution Date is $500,000.
With  respect  to the  Class  A-6  and  Class  A-PO  Certificates,  the  minimum
Denomination  eligible  for  wire  transfer  on each  Distribution  Date is 100%
Percentage Interest.  The Class A-R and Class A-LR Certificates are not eligible
for wire transfer.

            SECTION 11.24     SINGLE CERTIFICATE.

            A Single  Certificate for each Class of Class A Certificates  (other
than the Class A-6, Class A-8,  Class A-9, Class A-PO,  Class A-R and Class A-LR
Certificates)  and each Class of the Class B Certificates  (other than the Class
B-4, Class B-5 and Class B-6 Certificates) represents a $100,000 Denomination. A
Single  Certificate for the Class A-6  Certificates  represents a $12,374,000.00
Denomination.  A Single Certificate for the Class A-8 and Class A-9 Certificates
represents a $1,000  Denomination.  A Single  Certificate  for the Class A-R and
Class A-LR Certificates represents a $100 Denomination. A Single Certificate for
the  Class  B-4,  Class B-5 and Class B-6  Certificates  represents  a  $250,000
Denomination.  A Single Certificate for the Class A-PO Certificates represents a
$649,468.62 Denomination.

            SECTION 11.25     SERVICING FEE RATE.

            The rate used to calculate  the  Servicing Fee is equal to such rate
as is set forth on the Mortgage Loan Schedule with respect to a Mortgage Loan.

            SECTION 11.26     MASTER SERVICING FEE RATE.

            The  rate  used to  calculate  the  Master  Servicing  Fee for  each
Mortgage Loan is 0.017% per annum.

            IN WITNESS WHEREOF,  the Seller, the Master Servicer and the Trustee
have  caused  their  names to be  signed  hereto  by their  respective  officers
thereunto duly authorized, all as of the day and year first above written.


                                    NORWEST ASSET SECURITIES
                                    CORPORATION
                                       as Seller



                                       By:____________________________________
                                          Name:   Alan S. McKenney
                                          Title:    Vice President




                                    NORWEST BANK MINNESOTA, NATIONAL
                                    ASSOCIATION
                                       as Master Servicer



                                       By:____________________________________
                                          Name:   Nancy E. Burgess
                                          Title:    Vice President




                                    FIRST UNION NATIONAL BANK
                                       as Trustee



                                       By:____________________________________
                                          Name:
                                          Title:


Attest:
By:___________________________
Name:_________________________
Title:________________________


<PAGE>



STATE OF MARYLAND   )
                    )  ss.:
COUNTY OF FREDERICK )


            On this 28th day of May, 1999, before me, a notary public in and for
the State of Maryland,  personally  appeared Alan S. McKenney,  known to me who,
being by me duly sworn, did depose and say that he resides at McLean,  Virginia;
that he is a Vice President of Norwest Asset Securities Corporation,  a Delaware
corporation, one of the parties that executed the foregoing instrument; and that
he  signed  his  name  thereto  by  order  of the  Board  of  Directors  of said
corporation.



- -------------------------
Notary Public

[NOTARIAL SEAL]


<PAGE>


STATE OF MARYLAND       )
                        )  ss.:
COUNTY OF FREDERICK     )


            On this 28th day of May, 1999, before me, a notary public in and for
the State of Maryland,  personally  appeared Nancy E. Burgess,  known to me who,
being by me duly  sworn,  did  depose  and say that she  resides  at  Frederick,
Maryland;  that she is a Vice  President  of Norwest  Bank  Minnesota,  National
Association,  a national banking  association,  one of the parties that executed
the foregoing  instrument;  and that she signed her name thereto by order of the
Board of Directors of said corporation.



- -------------------------
Notary Public

[NOTARIAL SEAL]


<PAGE>


STATE OF NORTH CAROLINA    )
                           )   ss.:
COUNTY OF                  )


            On this 28th day of May, 1999, before me, a notary public in and for
the State of North Carolina, personally appeared _____________________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________,  North Carolina; that he is a _____________________ of First
Union National  Bank, a national  banking  association,  one of the parties that
executed  the  foregoing  instrument;  and that s/he signed his name  thereto by
order of the Board of Directors of said corporation.



- -------------------------
Notary Public

[NOTARIAL SEAL]


<PAGE>


                                   SCHEDULE I

    Norwest Asset Securities Corporation, Mortgage Pass-Through Certificates,
                                 Series 1999-16
                 Applicable Unscheduled Principal Receipt Period


                                        Full Unscheduled    Partial Unscheduled
          Servicer                    Principal Receipts    Principal Receipts

Norwest Mortgage, Inc. (Exhibit F-1)      Prior Month           Prior Month
Norwest Mortgage, Inc. (Exhibit F-2)       Mid Month             Mid Month
SunTrust Mortgage, Inc.                    Mid Month            Prior Month
Bank United                                Mid Month            Prior Month
BankNorth Mortgage Company, Inc.           Mid Month            Prior Month
National City Mortgage Company             Mid Month            Prior Month
GMAC Mortgage Corporation                  Mid Month            Prior Month
Countrywide Home Loans, Inc.              Prior Month           Prior Month
America First Credit Union                 Mid Month            Prior Month
Charter Bank for Savings, FSB              Mid Month            Prior Month

<PAGE>

                                   EXHIBIT A-1
                     [FORM OF FACE OF CLASS A-1 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-1

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-1  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-1 Certificates required to be distributed to
Holders of the Class A-1  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-1 Certificates  applicable to each  Distribution Date will be 6.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-1 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-2
                     [FORM OF FACE OF CLASS A-2 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-2

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-2  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-2 Certificates required to be distributed to
Holders of the Class A-2  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-2 Certificates  applicable to each  Distribution Date will be 6.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-2 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-3
                     [FORM OF FACE OF CLASS A-3 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-3

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-3  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-3 Certificates required to be distributed to
Holders of the Class A-3  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-3 Certificates  applicable to each  Distribution Date will be 6.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-3 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-4
                     [FORM OF FACE OF CLASS A-4 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-4

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

<PAGE>



            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-4  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-4 Certificates required to be distributed to
Holders of the Class A-4  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-4 Certificates  applicable to each  Distribution Date will be 6.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-4 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 98.37188%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately  1.67812000%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  6.35%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.01807556%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-5
                     [FORM OF FACE OF CLASS A-5 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-5

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-5  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-5 Certificates required to be distributed to
Holders of the Class A-5  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-5 Certificates  applicable to each  Distribution Date will be a floating
rate  of  interest  determined  as  provided  herein  and  as  specified  in the
Agreement.  The  pass-through  rate applicable with respect to the  Distribution
Date in June 1999 will be 5.235% per  annum.  Thereafter,  with  respect to each
Distribution  Date,  the  pass-through  rate will be a per annum  rate  equal to
0.300% plus LIBOR as determined on the second business day prior to the 25th day
of the month preceding the month in which such Distribution Date occurs, subject
to a minimum rate of 0.300% and a maximum rate of 8.000%. The amount of interest
which accrues on this Certificate in any month will be subject to reduction with
respect to any  Non-Supported  Interest  Shortfall  and the interest  portion of
certain Realized Losses allocated to the Class A-5 Certificates, as described in
the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-6
                     [FORM OF FACE OF CLASS A-6 CERTIFICATE]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-6

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            THE  NOTIONAL  AMOUNT OF THIS  CERTIFICATE  WILL BE  REDUCED  IN THE
MANNER  DESCRIBED  IN THE  POOLING AND  SERVICING  AGREEMENT.  ACCORDINGLY,  THE
OUTSTANDING NOTIONAL AMOUNT OF THIS CERTIFICATE AT ANY TIME MAY BE LESS THAN THE
INITIAL NOTIONAL AMOUNT REPRESENTED HEREBY.



Certificate No.                    Cut-Off Date: May 1, 1999

CUSIP No.:                         First Distribution Date: June 25, 1999

Percentage Interest evidenced      Denomination:  $ (Initial  Class A-6 Notional
by this Certificate: %             Amount)

Final Scheduled Maturity Date:     June 25, 2029

<PAGE>


            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-6  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-6 Certificates required to be distributed to
Holders of the Class A-6  Certificates  on such  Distribution  Date,  subject to
adjustment  in  certain  events as  specified  in the  Agreement.  The Class A-6
Certificates  are not entitled to  distributions  in respect of  principal.  The
pass-through rate on the Class A-6 Certificates  applicable to each Distribution
Date will be a floating rate of interest  determined  as provided  herein and as
specified in the Agreement. The pass-through rate applicable with respect to the
Distribution  Date in June 1999  will be  2.765%  per  annum.  Thereafter,  with
respect to each  Distribution  Date, the  pass-through  rate will be a per annum
rate equal to (i) 7.700% minus (ii) LIBOR,  as determined on the second business
day  prior  to the 25th  day of the  month  preceding  the  month in which  such
Distribution Date occurs, subject to a minimum rate of 0.000% and a maximum rate
of 7.700%. The amount of interest which accrues on this Certificate in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-6 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution on this Certificate
will be made after due notice of the pendency of such distribution and only upon
presentation and surrender of this Certificate at the office or agency specified
by the Trustee for that purpose in the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28,  1999,  at an issue price of
6.24179% of the initial Class A-6 Notional Amount,  including  accrued interest,
and a stated  redemption  price at maturity equal to all interest  distributions
hereon,  and is issued with original issue  discount  ("OID") for federal income
tax  purposes.  Assuming  (a) that  this  Certificate  pays in  accordance  with
projected  cash  flows  reflecting  the  prepayment  assumption  of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3  Certificates)  used to price this  Certificate and
(b)  that  the  interest  rate  at  which  distributions  of  interest  on  this
Certificate  actually will be made will be determined as though the pass-through
rate on this  Certificate  applicable  to the first  Distribution  Date will not
change  thereafter:  (i) the amount of OID as a percentage  of the initial Class
A-6  Notional  Amount is  approximately  5.25700011%;  (ii) the annual  yield to
maturity of this Certificate,  compounded monthly, is approximately  30.90%; and
(iii) the amount of OID  allocable  to the short first  accrual  period (May 28,
1999 to June 25, 1999) as a percentage of the initial Class A-6 Notional Amount,
calculated using the exact method, is approximately 0.14447334%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>






                                   EXHIBIT A-7
                     [FORM OF FACE OF CLASS A-7 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-7

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-7  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-7 Certificates required to be distributed to
Holders of the Class A-7  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-7 Certificates  applicable to each  Distribution Date will be 6.400% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-7 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 98.29250%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately  1.76083333%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  6.88%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.02677904%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-8
                     [FORM OF FACE OF CLASS A-8 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-8

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-8  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-8 Certificates required to be distributed to
Holders of the Class A-8  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-8 Certificates  applicable to each  Distribution Date will be 6.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-8 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 92.45000%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately  7.60000000%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  7.03%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.03756392%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>

                                   EXHIBIT A-9
                     [FORM OF FACE OF CLASS A-9 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-9

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-9  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-9 Certificates required to be distributed to
Holders of the Class A-9  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-9 Certificates  applicable to each  Distribution Date will be 7.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-9 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                  EXHIBIT A-10
                    [FORM OF FACE OF CLASS A-10 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-10

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-10  Certificates  with respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-10 Certificates  required to be distributed
to Holders of the Class A-10 Certificates on such Distribution  Date, subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-10 Certificates  applicable to each Distribution Date will be 6.750% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-10 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                  EXHIBIT A-11
                    [FORM OF FACE OF CLASS A-11 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-11

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-11  Certificates  with respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-11 Certificates  required to be distributed
to Holders of the Class A-11 Certificates on such Distribution  Date, subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-11 Certificates  applicable to each Distribution Date will be 6.000% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-11 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                  EXHIBIT A-12
                    [FORM OF FACE OF CLASS A-12 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-12

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            UNTIL THE APPLICABLE  ACCRETION  TERMINATION DATE, THE INTEREST THAT
ACCRUES  ON THE  PRINCIPAL  BALANCE  OF THIS  CERTIFICATE  WILL NOT BE  PAYABLE.
BECAUSE  SUCH  UNPAID  INTEREST  IS  ADDED  TO THE  PRINCIPAL  BALANCE  OF  THIS
CERTIFICATE AND BECAUSE DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE WILL
BE MADE IN THE MANNER  DESCRIBED  IN THE  AGREEMENT  (AS  DEFINED  HEREIN),  THE
OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE  AT ANY TIME MAY BE MORE OR
LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029


<PAGE>


THIS CERTIFIES THAT  ___________________________  is the registered owner of the
Percentage  Interest  evidenced by this Certificate in monthly  distributions to
the  Holders  of the Class A-12  Certificates  with  respect  to a Trust  Estate
consisting of a pool of fixed  interest rate,  conventional,  monthly pay, fully
amortizing,  first lien, one- to four-family  residential  mortgage loans, other
than the Fixed  Retained  Yield,  if any,  with respect  thereto,  and which may
include loans secured by shares issued by cooperative housing  corporations (the
"Mortgage Loans"),  formed by Norwest Asset Securities Corporation  (hereinafter
called  the  "Seller",  which  term  includes  any  successor  entity  under the
Agreement referred to below). The Trust Estate was created pursuant to a Pooling
and Servicing  Agreement  dated as of May 28, 1999 (the  "Agreement")  among the
Seller,  Norwest Bank Minnesota,  National Association,  as master servicer (the
"Master Servicer") and First Union National Bank, as trustee (the "Trustee"),  a
summary  of  certain  of  the  pertinent   provisions  of  which  is  set  forth
hereinafter. To the extent not defined herein, the capitalized terms used herein
have the meanings  ascribed to such terms in the Agreement.  This Certificate is
issued  under and is subject  to the terms,  provisions  and  conditions  of the
Agreement,  to which  Agreement the Holder of this  Certificate by virtue of the
acceptance hereof assents and by which such Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-12 Certificates  required to be distributed
to Holders of the Class A-12 Certificates on such Distribution  Date, subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-12 Certificates  applicable to each Distribution Date will be 6.500% per
annum.  Prior to the applicable  Accretion  Termination Date, no distribution of
interest on this  Certificate  will be made.  Prior to the applicable  Accretion
Termination  Date,   interest  otherwise  available  for  distribution  on  this
Certificate  will  be  added  to  the  Principal   Balance  of  the  Class  A-12
Certificates on each Distribution  Date. The amount of interest which accrues on
this  Certificate  in any month will be subject to reduction with respect to any
Non-Supported  Interest  Shortfall and the interest  portion of certain Realized
Losses allocated to the Class A-12 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28,  1999,  at an issue price of
99.48750%, including accrued interest, and a stated redemption price at maturity
equal to the sum of its initial principal balance and all interest distributions
hereon (whether current or accrued),  and is issued with original issue discount
("OID") for federal income tax purposes.  Assuming that this Certificate pays in
accordance  with  projected cash flows  reflecting the prepayment  assumption of
275% SPA (as  defined  in the  Prospectus  Supplement  dated  May 21,  1999 with
respect  to the  offering  of the Class A  Certificates  (except  the Class A-PO
Certificates),  Class B-1, Class B-2 and Class B-3  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this Certificate is approximately 5.56673919%;  (ii) the annual yield
to maturity of this Certificate, compounded monthly, is approximately 7.26%; and
(iii) the amount of OID  allocable  to the short first  accrual  period (May 28,
1999 to June 25, 1999) as a percentage of the initial  principal balance of this
Certificate, calculated using the exact method, is approximately 0.54172644%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee
By ________________________
Authorized Officer


<PAGE>


                                  EXHIBIT A-13
                    [FORM OF FACE OF CLASS A-13 CERTIFICATE]

            [UNLESS   THIS   CERTIFICATE   IS   PRESENTED   BY   AN   AUTHORIZED
REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY TO THE SELLER OR ITS AGENT FOR
REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT,  AND ANY  CERTIFICATE  ISSUED IS
REGISTERED  IN THE NAME OF CEDE & CO.  OR SUCH  OTHER  NAME AS  REQUESTED  BY AN
AUTHORIZED  REPRESENTATIVE  OF THE  DEPOSITORY  TRUST COMPANY AND ANY PAYMENT IS
MADE TO CEDE & CO.,  ANY  TRANSFER,  PLEDGE  OR OTHER  USE  HEREOF  FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  SINCE THE  REGISTERED  OWNER  HEREOF,
CEDE & CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-13

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            UNTIL THE APPLICABLE  ACCRETION  TERMINATION DATE, THE INTEREST THAT
ACCRUES  ON THE  PRINCIPAL  BALANCE  OF THIS  CERTIFICATE  WILL NOT BE  PAYABLE.
BECAUSE  SUCH  UNPAID  INTEREST  IS  ADDED  TO THE  PRINCIPAL  BALANCE  OF  THIS
CERTIFICATE AND BECAUSE DISTRIBUTIONS IN REDUCTION OF THE PRINCIPAL BALANCE WILL
BE MADE IN THE MANNER  DESCRIBED  IN THE  AGREEMENT  (AS  DEFINED  HEREIN),  THE
OUTSTANDING  PRINCIPAL  BALANCE OF THIS  CERTIFICATE  AT ANY TIME MAY BE MORE OR
LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029


<PAGE>



            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-13  Certificates  with respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-13 Certificates  required to be distributed
to Holders of the Class A-13 Certificates on such Distribution  Date, subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-13 Certificates  applicable to each Distribution Date will be 6.500% per
annum.  Prior to the applicable  Accretion  Termination Date, no distribution of
interest on this  Certificate  will be made.  Prior to the applicable  Accretion
Termination  Date,   interest  otherwise  available  for  distribution  on  this
Certificate  will  be  added  to  the  Principal   Balance  of  the  Class  A-13
Certificates on each Distribution  Date. The amount of interest which accrues on
this  Certificate  in any month will be subject to reduction with respect to any
Non-Supported  Interest  Shortfall and the interest  portion of certain Realized
Losses allocated to the Class A-13 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28,  1999,  at an issue price of
90.45625%, including accrued interest, and a stated redemption price at maturity
equal to the sum of its initial principal balance and all interest distributions
hereon (whether current or accrued),  and is issued with original issue discount
("OID") for federal income tax purposes.  Assuming that this Certificate pays in
accordance  with  projected cash flows  reflecting the prepayment  assumption of
275% SPA (as  defined  in the  Prospectus  Supplement  dated  May 21,  1999 with
respect  to the  offering  of the Class A  Certificates  (except  the Class A-PO
Certificates),  Class B-1, Class B-2 and Class B-3  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this  Certificate  is  approximately  168.21761477%;  (ii) the annual
yield to maturity of this  Certificate,  compounded  monthly,  is  approximately
7.21%;  and (iii) the amount of OID allocable to the short first accrual  period
(May 28, 1999 to June 25, 1999) as a percentage of the initial principal balance
of this  Certificate,  calculated  using  the  exact  method,  is  approximately
0.48919440%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee
By ________________________
Authorized Officer


<PAGE>


                                  EXHIBIT A-14
                    [FORM OF FACE OF CLASS A-14 CERTIFICATE]

      AFTER THE CROSS-OVER DATE, THE PRINCIPAL PORTION OF REALIZED LOSSES, OTHER
      THAN EXCESS LOSSES, ALLOCATED TO THE CLASS A-13 CERTIFICATES WILL BE BORNE
      BY THE CLASS A-14  CERTIFICATES  AS DESCRIBED IN THE POOLING AND SERVICING
      AGREEMENT REFERRED TO HEREIN.

      EXCEPT AS  PROVIDED  IN  SECTION  5.02(C)  OF THE  POOLING  AND  SERVICING
      AGREEMENT REFERRED TO HEREIN,  THIS CERTIFICATE MAY NOT BE PURCHASED BY OR
      TRANSFERRED TO ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER
      STATING EITHER (A) THAT THE TRANSFEREE IS NOT AN EMPLOYEE  BENEFIT PLAN OR
      OTHER RETIREMENT ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT
      INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"),  OR SECTION 4975 OF THE
      INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"),  OR A GOVERNMENTAL
      PLAN, AS DEFINED IN SECTION 3(32) OF ERISA, SUBJECT TO ANY FEDERAL,  STATE
      OR LOCAL LAW WHICH IS, TO A  MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING
      PROVISIONS  OF ERISA  OR THE CODE  (COLLECTIVELY,  A  "PLAN"),  AND IS NOT
      ACTING ON BEHALF OF OR  INVESTING  THE ASSETS OF A PLAN OR (B)  SUBJECT TO
      CERTAIN CONDITIONS SET FORTH IN THE POOLING AND SERVICING AGREEMENT,  THAT
      THE SOURCE OF FUNDS USED TO PURCHASE  THIS  CERTIFICATE  IS AN  "INSURANCE
      COMPANY GENERAL ACCOUNT."


<PAGE>


                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16 CLASS A-14

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER,  THE MASTER SERVICER,  THE TRUSTEE,  THE TRUSTEE OR ANY OF THEIR
AFFILIATES, AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,
THE TRUSTEE, THE TRUSTEE OR ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY
OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                          Cut-Off Date: May 1, 1999

CUSIP No.:                               First Distribution Date: June 25, 1999

Percentage Interest evidenced            Denomination: $
by this Certificate: %

Final Scheduled Maturity Date: June 25, 2029



<PAGE>



            THIS  CERTIFIES THAT  ___________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-14  Certificates  with respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-14 Certificates  required to be distributed
to Holders of the Class A-14 Certificates on such Distribution  Date, subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-14 Certificates  applicable to each Distribution Date will be 6.500% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-14 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class A-14  Certificate  will be made  unless the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 94.98750%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately  5.06666667%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  7.05%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.01494145%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.


Dated:


                                           First Union National Bank,
                                              Trustee


                                           By__________________________
                                              Authorized Officer


Countersigned:

First Union National Bank,
   Trustee


By__________________________
   Authorized Officer




<PAGE>


                                  EXHIBIT A-PO
                    [FORM OF FACE OF CLASS A-PO CERTIFICATE]

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON  THAT HAS NOT  DELIVERED A  REPRESENTATION  LETTER  STATING  THAT THE
TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN OR OTHER  RETIREMENT  ARRANGEMENT
SUBJECT TO TITLE I OF THE EMPLOYEE  RETIREMENT  INCOME  SECURITY ACT OF 1974, AS
AMENDED  ("ERISA")  OR SECTION 4975 OF THE  INTERNAL  REVENUE  CODE OF 1986,  AS
AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL LAW  WHICH  IS, TO A  MATERIAL
EXTENT,  SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY,
A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1999-16, CLASS A-PO

            evidencing   an  interest  in  a  pool  of  fixed   interest   rate,
  conventional, monthly pay, fully amortizing, first lien, one- to four-family
      residential mortgage loans, which may include loans secured by shares
                   issued by cooperative housing corporations,
                                     sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

<PAGE>



            THIS CERTIFIES THAT  ____________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class A-PO  Certificates  with respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-PO Certificates  required to be distributed
to Holders of the Class A-PO Certificates on such Distribution  Date, subject to
adjustment  in certain  events as  specified  in the  Agreement.  The Class A-PO
Certificates will not be entitled to distributions in respect of interest.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class A-PO  Certificate  will be made unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating that the transferee
is not a Plan and is not  acting on  behalf  of a Plan or using the  assets of a
Plan to  effect  such  purchase  or (ii) if such  transferee  is a Plan,  (a) an
opinion of counsel  acceptable to and in form and substance  satisfactory to the
Trustee  and  the  Seller  with  respect  to  certain  matters  and  such  other
documentation as the Seller or the Master Servicer may require,  as described in
the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28,  1999,  at an issue price of
66.59375%  and a stated  redemption  price  at  maturity  equal  to its  initial
principal  balance,  and is issued  with  original  issue  discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately 33.40625000%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  7.63%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.38074719%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer  of the  Trustee  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT A-R
                     [Form of Face of Class A-R Certificate]

FOR U.S. FEDERAL INCOME TAX PURPOSES,  THIS CERTIFICATE IS A "RESIDUAL INTEREST"
IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT" AS THOSE  TERMS ARE  DEFINED,
RESPECTIVELY,  IN SECTIONS  860G(a)(2) AND 860D OF THE INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE "CODE").  A TRANSFEREE OF THIS CERTIFICATE,  BY ACCEPTANCE
HEREOF,  IS  DEEMED  TO  HAVE  ACCEPTED  THIS  CERTIFICATE  SUBJECT  TO  CERTAIN
RESTRICTIONS ON TRANSFERABILITY,  AS SET FORTH IN SECTION 5.02(d) OF THE POOLING
AND  SERVICING  AGREEMENT,  AND SHALL BE REQUIRED TO FURNISH AN AFFIDAVIT TO THE
TRANSFEROR AND THE TRUSTEE TO THE EFFECT THAT,  AMONG OTHER THINGS,  IT IS NOT A
DISQUALIFIED  ORGANIZATION,  AS SUCH TERM IS DEFINED IN CODE SECTION 860E(e)(5),
AN AGENT  (INCLUDING A BROKER,  NOMINEE OR OTHER  MIDDLEMAN)  FOR A DISQUALIFIED
ORGANIZATION OR A NON-PERMITTED FOREIGN HOLDER, AS DEFINED IN SECTION 5.02(d) OF
THE POOLING AND SERVICING AGREEMENT AND TO HAVE AGREED TO SUCH AMENDMENTS TO THE
POOLING AND  SERVICING  AGREEMENT AS MAY BE REQUIRED TO FURTHER  EFFECTUATE  THE
RESTRICTIONS  ON  TRANSFERS TO  DISQUALIFIED  ORGANIZATIONS,  AGENTS  THEREOF OR
NON-PERMITTED FOREIGN HOLDERS.

THE HOLDER OF THIS CLASS A-R  CERTIFICATE,  BY ACCEPTANCE  HEREOF,  IS DEEMED TO
HAVE  AGREED TO THE  DESIGNATION  OF THE MASTER  SERVICER AS ITS AGENT TO ACT AS
"TAX  MATTERS  PERSON" OF THE REMIC TO PERFORM THE  FUNCTIONS  OF A "TAX MATTERS
PARTNER" FOR  PURPOSES OF  SUBCHAPTER C OF CHAPTER 63 OF SUBTITLE F OF THE CODE,
OR, IF SO REQUESTED BY THE MASTER SERVICER,  TO ACT AS TAX MATTERS PERSON OF THE
REMIC.

THIS  CERTIFICATE  MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON WHICH IS
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT  ARRANGEMENT  SUBJECT TO TITLE I OF
THE EMPLOYEE  RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED  ("ERISA"),  OR
SECTION 4975 OF THE CODE OR A GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA SUBJECT TO ANY FEDERAL, STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT,
SIMILAR  TO THE  FOREGOING  PROVISIONS  OF ERISA OR THE  CODE  (COLLECTIVELY,  A
"PLAN"), OR ANY PERSON ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS A-R

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $100.00
by this Certificate: 100%

Final Scheduled Maturity Date:      June 25, 2029


<PAGE>



            THIS  CERTIFIES  THAT  __________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions to the Holder of the Class A-R Certificate with respect to a Trust
Estate consisting of a pool of fixed interest rate,  conventional,  monthly pay,
fully amortizing,  first lien, one- to four-family  residential  mortgage loans,
other than the Fixed Retained Yield, if any, with respect thereto, and which may
include loans secured by shares issued by cooperative housing  corporations (the
"Mortgage Loans"),  formed by Norwest Asset Securities Corporation  (hereinafter
called  the  "Seller",  which  term  includes  any  successor  entity  under the
Agreement referred to below). The Trust Estate was created pursuant to a Pooling
and Servicing  Agreement  dated as of May 28, 1999 (the  "Agreement")  among the
Seller,  Norwest Bank Minnesota,  National Association,  as master servicer (the
"Master Servicer") and First Union National Bank, as trustee (the "Trustee"),  a
summary  of  certain  of  the  pertinent   provisions  of  which  is  set  forth
hereinafter. To the extent not defined herein, the capitalized terms used herein
have the meanings  ascribed to such terms in the Agreement.  This Certificate is
issued  under and is subject  to the terms,  provisions  and  conditions  of the
Agreement,  to which  Agreement the Holder of this  Certificate by virtue of the
acceptance hereof assents and by which such Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-R Certificate  required to be distributed to
the Holder of the Class A-R Certificate on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-R Certificate  applicable to each  Distribution  Date will be 6.500% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-R Certificate, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as  such  name  and  address   shall   appear  on  the   Certificate   Register.
Notwithstanding  the above,  the final  distribution on this Certificate will be
made  after  due  notice  of the  pendency  of such  distribution  and only upon
presentation and surrender of this Certificate at the office or agency specified
by the Trustee for that purpose in the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                  EXHIBIT A-LR
                    [Form of Face of Class A-LR Certificate]

FOR U.S. FEDERAL INCOME TAX PURPOSES,  THIS CERTIFICATE IS A "RESIDUAL INTEREST"
IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT" AS THOSE  TERMS ARE  DEFINED,
RESPECTIVELY,  IN SECTIONS  860G(a)(2) AND 860D OF THE INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE "CODE").  A TRANSFEREE OF THIS CERTIFICATE,  BY ACCEPTANCE
HEREOF,  IS  DEEMED  TO  HAVE  ACCEPTED  THIS  CERTIFICATE  SUBJECT  TO  CERTAIN
RESTRICTIONS ON TRANSFERABILITY,  AS SET FORTH IN SECTION 5.02(d) OF THE POOLING
AND  SERVICING  AGREEMENT,  AND SHALL BE REQUIRED TO FURNISH AN AFFIDAVIT TO THE
TRANSFEROR AND THE TRUST  ADMINISTRATOR  TO THE EFFECT THAT, AMONG OTHER THINGS,
IT IS NOT A DISQUALIFIED  ORGANIZATION,  AS SUCH TERM IS DEFINED IN CODE SECTION
860E(e)(5),  AN AGENT  (INCLUDING A BROKER,  NOMINEE OR OTHER  MIDDLEMAN)  FOR A
DISQUALIFIED  ORGANIZATION  OR A  NON-PERMITTED  FOREIGN  HOLDER,  AS DEFINED IN
SECTION  5.02(d) OF THE POOLING AND  SERVICING  AGREEMENT  AND TO HAVE AGREED TO
SUCH  AMENDMENTS  TO THE POOLING AND  SERVICING  AGREEMENT AS MAY BE REQUIRED TO
FURTHER EFFECTUATE THE RESTRICTIONS ON TRANSFERS TO DISQUALIFIED  ORGANIZATIONS,
AGENTS THEREOF OR NON-PERMITTED FOREIGN HOLDERS.

THE HOLDER OF THIS CLASS A-LR  CERTIFICATE,  BY ACCEPTANCE  HEREOF, IS DEEMED TO
HAVE  AGREED TO THE  DESIGNATION  OF THE MASTER  SERVICER AS ITS AGENT TO ACT AS
"TAX MATTERS PERSON" OF THE LOWER-TIER  REMIC TO PERFORM THE FUNCTIONS OF A "TAX
MATTERS PARTNER" FOR PURPOSES OF SUBCHAPTER C OF CHAPTER 63 OF SUBTITLE F OF THE
CODE, OR, IF SO REQUESTED BY THE MASTER  SERVICER,  TO ACT AS TAX MATTERS PERSON
OF THE LOWER-TIER REMIC.

THIS  CERTIFICATE  MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON WHICH IS
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT  ARRANGEMENT  SUBJECT TO TITLE I OF
THE EMPLOYEE  RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED  ("ERISA"),  OR
SECTION 4975 OF THE CODE OR A GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA SUBJECT TO ANY FEDERAL, STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT,
SIMILAR  TO THE  FOREGOING  PROVISIONS  OF ERISA OR THE  CODE  (COLLECTIVELY,  A
"PLAN"), OR ANY PERSON ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.

                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1999-16, CLASS A-LR

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                          Cut-Off Date: May 1, 1999

CUSIP No.:                               First Distribution Date: June 25, 1999

Percentage Interest evidenced            Denomination: $100.00
by this Certificate: 100%

Final Scheduled Maturity Date: June 25, 2029


<PAGE>



            THIS  CERTIFIES  THAT  __________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holder of the Class  A-LR  Certificate  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations  (the  "Mortgage  Loans"),   formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master servicer (the "Master Servicer"),  and First Union National Bank, as (the
"Trustee"),  a summary of certain of the  pertinent  provisions  of which is set
forth hereinafter.  To the extent not defined herein, the capitalized terms used
herein  have  the  meanings  ascribed  to  such  terms  in the  Agreement.  This
Certificate  is  issued  under  and is  subject  to the  terms,  provisions  and
conditions of the Agreement,  to which Agreement the Holder of this  Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-LR Certificate required to be distributed to
the Holder of the Class A-LR Certificate on such Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-LR Certificate  applicable to each  Distribution Date will be 6.500% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-LR Certificate, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as  such  name  and  address   shall   appear  on  the   Certificate   Register.
Notwithstanding  the above,  the final  distribution on this Certificate will be
made  after  due  notice  of the  pendency  of such  distribution  and only upon
presentation and surrender of this Certificate at the office or agency specified
by the Trustee for that purpose in the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.


Dated:


                                           First Union National Bank,
                                              Trustee


                                           By__________________________
                                              Authorized Officer


Countersigned:

First Union National Bank,
   Trustee


By__________________________
   Authorized Officer



<PAGE>


                                  EXHIBIT B-1
                     [FORM OF FACE OF CLASS B-1 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AS DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS B-1

     evidencing an  interest  in a pool of fixed  interest  rate,  conventional,
         monthly  pay,  fully  amortizing,   first  lien,  one-  to  four-family
         residential mortgage loans, which may include loans secured by
           shares issued by cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

<PAGE>



            THIS CERTIFIES THAT  ____________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class B-1  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior rights of the Class A Certificates as specified in the Agreement,  any
Class B-1 Distribution Amount required to be distributed to Holders of the Class
B-1 Certificates on such Distribution  Date,  subject to adjustment,  in certain
events,  as specified in the Agreement.  The pass-through  rate on the Class B-1
Certificates  applicable to each Distribution Date will be 6.500% per annum. The
amount of  interest  which  accrues  on this  Certificate  in any month  will be
subject to reduction with respect to any  Non-Supported  Interest  Shortfall and
the  interest  portion of certain  Realized  Losses  allocated  to the Class B-1
Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-1  Certificate  will be made  unless  the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 96.98750%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately  3.06666667%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  6.92%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.01597185%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT B-2
                     [FORM OF FACE OF CLASS B-2 CERTIFICATE]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AND THE CLASS  B-1  CERTIFICATES  AS  DESCRIBED  IN THE  POOLING  AND  SERVICING
AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS B-2

     evidencing an  interest  in a pool of fixed  interest  rate,  conventional,
         monthly  pay,  fully  amortizing,   first  lien,  one-  to  four-family
         residential mortgage loans, which may include loans secured by
           shares issued by cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029


<PAGE>



            THIS CERTIFIES THAT  ____________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class B-2  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the  prior  rights  of the  Class A  Certificates  and  each  Class  of  Class B
Certificates  bearing  a  lower  numerical   designation  as  specified  in  the
Agreement,  any Class B-2  Distribution  Amount  required to be  distributed  to
Holders of the Class B-2  Certificates  on such  Distribution  Date,  subject to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-2 Certificates  applicable to each Distribution Date will be
6.500% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-2 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-2  Certificate  will be made  unless  the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 94.95625%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately  5.09791667%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  7.21%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.02614544%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT B-3

                     [FORM OF FACE OF CLASS B-3 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS B-1  CERTIFICATES  AND THE  CLASS B-2  CERTIFICATES  AS
DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS B-3

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029


<PAGE>



            THIS   CERTIFIES   THAT   _______________________________   is   the
registered  owner of the Percentage  Interest  evidenced by this  Certificate in
monthly  distributions to the Holders of the Class B-3 Certificates with respect
to a Trust Estate  consisting of a pool of fixed  interest  rate,  conventional,
monthly pay,  fully  amortizing,  first lien,  one- to  four-family  residential
mortgage  loans,  other than the Fixed  Retained  Yield,  if any,  with  respect
thereto,  and which may include loans  secured by shares  issued by  cooperative
housing  corporations  (the "Mortgage Loans") formed by Norwest Asset Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the  prior  rights  of the  Class A  Certificates  and  each  Class  of  Class B
Certificates  bearing  a  lower  numerical   designation  as  specified  in  the
Agreement,  any Class B-3  Distribution  Amount  required to be  distributed  to
Holders of the Class B-3  Certificates  on such  Distribution  Date,  subject to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-3 Certificates  applicable to each Distribution Date will be
6.500% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-3 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-3  Certificate  will be made  unless  the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 89.28438%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately 10.76979167%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  8.08%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.05314773%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT B-4
                     [FORM OF FACE OF CLASS B-4 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS B-1  CERTIFICATES,  THE CLASS B-2  CERTIFICATES AND THE
CLASS B-3  CERTIFICATES  AS  DESCRIBED  IN THE POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN.

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS B-4

     evidencing an  interest  in a pool of fixed  interest  rate,  conventional,
         monthly  pay,  fully  amortizing,   first  lien,  one-  to  four-family
         residential mortgage loans, which may include loans secured by
           shares issued by cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

<PAGE>



            THIS CERTIFIES THAT  ____________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class B-4  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the  prior  rights  of the  Class A  Certificates  and  each  Class  of  Class B
Certificates  bearing  a  lower  numerical   designation  as  specified  in  the
Agreement,  any Class B-4  Distribution  Amount  required to be  distributed  to
Holders of the Class B-4  Certificates  on such  Distribution  Date,  subject to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-4 Certificates  applicable to each Distribution Date will be
6.500% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-4 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-4  Certificate  will be made  unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating either (a) that the
transferee  is not a Plan and is not  acting  on  behalf  of a Plan or using the
assets of a Plan to effect such  purchase  or (b) subject to certain  conditions
described  in the  Agreement,  that the  source of funds used to  purchase  this
Certificate  is  an  "insurance  company  general  account,"  or  (ii)  if  such
transferee  is a Plan,  (a) an opinion of counsel  acceptable to and in form and
substance  satisfactory  to the Trustee  and the Seller with  respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 73.89375%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately 26.16041667%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  10.87%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.11486934%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                            Trustee


                                       By____________________________
                                            Authorized Officer

Countersigned:


First Union National Bank,
     Trustee


By ________________________
      Authorized Officer


<PAGE>


                                   EXHIBIT B-5
                     [FORM OF FACE OF CLASS B-5 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS B-1 CERTIFICATES, THE CLASS B-2 CERTIFICATES, THE CLASS
B-3  CERTIFICATES AND THE CLASS B-4 CERTIFICATES AS DESCRIBED IN THE POOLING AND
SERVICING AGREEMENT REFERRED TO HEREIN.

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS B-5

     evidencing an  interest  in a pool of fixed  interest  rate,  conventional,
         monthly  pay,  fully  amortizing,   first  lien,  one-  to  four-family
         residential mortgage loans, which may include loans secured by
           shares issued by cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029

<PAGE>



            THIS CERTIFIES THAT  ____________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class B-5  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the  prior  rights  of the  Class A  Certificates  and  each  Class  of  Class B
Certificates  bearing  a  lower  numerical   designation  as  specified  in  the
Agreement,  any Class B-5  Distribution  Amount  required to be  distributed  to
Holders of the Class B-5  Certificates  on such  Distribution  Date,  subject to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-5 Certificates  applicable to each Distribution Date will be
6.500% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-5 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-5  Certificate  will be made  unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating either (a) that the
transferee  is not a Plan and is not  acting  on  behalf  of a Plan or using the
assets of a Plan to effect such  purchase  or (b) subject to certain  conditions
described  in the  Agreement,  that the  source of funds used to  purchase  this
Certificate  is  an  "insurance  company  general  account,"  or  (ii)  if  such
transferee  is a Plan,  (a) an opinion of counsel  acceptable to and in form and
substance  satisfactory  to the Trustee  and the Seller with  respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 56.86250%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately 43.19166667%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  15.18%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.15945270%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT B-6
                     [FORM OF FACE OF CLASS B-6 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS B-1 CERTIFICATES, THE CLASS B-2 CERTIFICATES, THE CLASS
B-3  CERTIFICATES,  THE CLASS B-4 CERTIFICATES AND THE CLASS B-5 CERTIFICATES AS
DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON THAT HAS NOT DELIVERED A  REPRESENTATION  LETTER  STATING  EITHER (A)
THAT  THE  TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN  OR  OTHER  RETIREMENT
ARRANGEMENT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF
1974,  AS AMENDED  ("ERISA"),  OR SECTION 4975 OF THE  INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION
3(32) OF  ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL  LAW  WHICH IS, TO A
MATERIAL  EXTENT,  SIMILAR  TO THE  FOREGOING  PROVISIONS  OF  ERISA OR THE CODE
(COLLECTIVELY, A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS
OF A PLAN OR (B)  SUBJECT TO CERTAIN  CONDITIONS  SET FORTH IN THE  POOLING  AND
SERVICING AGREEMENT,  THAT THE SOURCE OF FUNDS USED TO PURCHASE THIS CERTIFICATE
IS AN "INSURANCE COMPANY GENERAL ACCOUNT."


<PAGE>



                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-16, CLASS B-6

     evidencing an  interest  in a pool of fixed  interest  rate,  conventional,
         monthly  pay,  fully  amortizing,   first  lien,  one-  to  four-family
         residential mortgage loans, which may include loans secured by
           shares issued by cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                     Cut-Off Date: May 1, 1999

CUSIP No.:                          First Distribution Date: June 25, 1999

Percentage Interest evidenced       Denomination: $
by this Certificate: %

Final Scheduled Maturity Date:      June 25, 2029


<PAGE>



            THIS CERTIFIES THAT  ____________________________  is the registered
owner of the  Percentage  Interest  evidenced  by this  Certificate  in  monthly
distributions  to the Holders of the Class B-6  Certificates  with  respect to a
Trust Estate consisting of a pool of fixed interest rate, conventional,  monthly
pay, fully  amortizing,  first lien,  one- to four-family  residential  mortgage
loans,  other than the Fixed Retained Yield, if any, with respect  thereto,  and
which may  include  loans  secured  by  shares  issued  by  cooperative  housing
corporations   (the  "Mortgage   Loans")  formed  by  Norwest  Asset  Securities
Corporation  (hereinafter called the "Seller", which term includes any successor
entity  under the  Agreement  referred to below).  The Trust  Estate was created
pursuant  to a Pooling  and  Servicing  Agreement  dated as of May 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the  prior  rights  of the  Class A  Certificates  and  each  Class  of  Class B
Certificates  bearing  a  lower  numerical   designation  as  specified  in  the
Agreement,  any Class B-6  Distribution  Amount  required to be  distributed  to
Holders of the Class B-6  Certificates  on such  Distribution  Date,  subject to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-6 Certificates  applicable to each Distribution Date will be
6.500% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-6 Certificates, as described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-6  Certificate  will be made  unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating either (a) that the
transferee  is not a Plan and is not  acting  on  behalf  of a Plan or using the
assets of a Plan to effect such  purchase  or (b) subject to certain  conditions
described  in the  Agreement,  that the  source of funds used to  purchase  this
Certificate  is  an  "insurance  company  general  account,"  or  (ii)  if  such
transferee  is a Plan,  (a) an opinion of counsel  acceptable to and in form and
substance  satisfactory  to the Trustee  and the Seller with  respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on May 28, 1999, and based on its issue
price of 25.48750%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal balance (plus 3 days of interest at the
pass-through  rate hereon),  is issued with original issue discount  ("OID") for
federal income tax purposes.  Assuming that this  Certificate pays in accordance
with projected cash flows  reflecting the prepayment  assumption of 275% SPA (as
defined in the  Prospectus  Supplement  dated May 21,  1999 with  respect to the
offering of the Class A Certificates (except the Class A-PO Certificates), Class
B-1, Class B-2 and Class B-3 Certificates)  used to price this Certificate:  (i)
the  amount of OID as a  percentage  of the  initial  principal  balance of this
Certificate is approximately 74.56666667%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  33.20%; and (iii) the
amount of OID allocable to the short first accrual  period (May 28, 1999 to June
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.14632173%.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

            IN WITNESS  WHEREOF,  the Trustee has caused this  Certificate to be
duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trustee


                                       By____________________________
                                          Authorized Officer

Countersigned:


First Union National Bank,
   Trustee


By ________________________
   Authorized Officer


<PAGE>


                                    EXHIBIT C

                [Form of Reverse of Series 1999-16 Certificates]

                      NORWEST ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1999-16

            This  Certificate is one of a duly authorized  issue of Certificates
issued in several Classes  designated as Mortgage  Pass-Through  Certificates of
the Series specified hereon (herein collectively called the "Certificates").

            The  Certificates  are  limited  in  right  of  payment  to  certain
collections  and  recoveries   respecting  the  Mortgage  Loans,   all  as  more
specifically  set forth  herein  and in the  Agreement.  In the event  funds are
advanced with respect to any Mortgage Loan by a Servicer, the Master Servicer or
the  Trustee,  such  advances  are  reimbursable  to such  Servicer,  the Master
Servicer or the Trustee to the extent  provided in the  Agreement,  from related
recoveries  on such  Mortgage  Loan or from  other  cash  that  would  have been
distributable to Certificateholders.

            As  provided  in the  Agreement,  withdrawals  from the  Certificate
Account created for the benefit of Certificateholders  may be made by the Master
Servicer  from  time  to  time  for  purposes   other  than   distributions   to
Certificateholders,  such purposes  including  reimbursement to a Servicer,  the
Master  Servicer  or the  Trustee,  as  applicable,  of  advances  made  by such
Servicer, the Master Servicer or the Trustee.

            The Agreement permits, with certain exceptions therein provided, the
amendment of the Agreement and the modification of the rights and obligations of
the  Seller,  the  Master  Servicer,  and  the  Trustee  and the  rights  of the
Certificateholders  under the  Agreement  at any time by the Seller,  the Master
Servicer  and the  Trustee  with the  consent  of the  Holders  of  Certificates
evidencing  in the  aggregate  not less than 66 2/3% of the Voting  Interests of
each Class of Certificates  affected thereby.  Any such consent by the Holder of
this  Certificate  shall be  conclusive  and binding on such Holder and upon all
future  holders  of this  Certificate  and of any  Certificate  issued  upon the
transfer  hereof or in exchange hereof or in lieu hereof whether or not notation
of such consent is made upon the  Certificate.  The  Agreement  also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates.

            As provided  in the  Agreement  and  subject to certain  limitations
therein  set forth,  the  transfer of this  Certificate  is  registrable  in the
Certificate  Register upon surrender of this  Certificate  for  registration  of
transfer at the office or agency appointed by the Trustee,  duly endorsed by, or
accompanied  by an assignment  in the form below or other written  instrument of
transfer in form satisfactory to the Trustee and the Certificate Registrar, duly
executed by the Holder  hereof or such  Holder's  attorney  duly  authorized  in
writing, and thereupon one or more new Certificates of authorized  Denominations
evidencing  the same Class and aggregate  Percentage  Interest will be issued to
the designated transferee or transferees.

            The  Certificates  are  issuable  only  as  registered  Certificates
without  coupons in Classes and  Denominations  specified in the  Agreement.  As
provided in the Agreement and subject to certain  limitations therein set forth,
Certificates are  exchangeable for new Certificates of authorized  Denominations
evidencing the same Class and aggregate Percentage Interest, as requested by the
Holder surrendering the same.

            No service charge will be made for any such registration of transfer
or exchange, but the Trustee or the Certificate Registrar may require payment of
a sum  sufficient  to cover  any tax or other  governmental  charge  payable  in
connection therewith.

            The Seller,  the Master  Servicer,  the Trustee and the  Certificate
Registrar,  and any agent of the Seller, the Master Servicer, the Trustee or the
Certificate  Registrar,  may treat the Person in whose name this  Certificate is
registered  as the owner hereof for all  purposes,  and neither the Seller,  the
Master Servicer, the Trustee, the Certificate Registrar nor any such agent shall
be affected by notice to the contrary.

            The  obligations   created  by  the  Agreement  in  respect  of  the
Certificates  and the Trust Estate created thereby shall terminate upon the last
action  required  to be taken by the  Trustee  on the  Final  Distribution  Date
pursuant  to the  Agreement  following  the  earlier of (i) the payment or other
liquidation (or advance with respect  thereto) of the last Mortgage Loan subject
thereto or the disposition of all property  acquired upon foreclosure or deed in
lieu of  foreclosure  of any Mortgage  Loan, and (ii) the purchase by the Seller
from the Trust Estate of all remaining  Mortgage Loans and all property acquired
in respect of such Mortgage Loans; provided, however, that the Trust Estate will
in no event  continue  beyond the  expiration  of 21 years from the death of the
last survivor of the  descendants of Joseph P. Kennedy,  the late  ambassador of
the  United  States  to the  Court  of St.  James,  living  on the  date  of the
Agreement.  The Agreement permits,  but does not require, the Seller to purchase
all  remaining  Mortgage  Loans and all  property  acquired  in  respect  of any
Mortgage Loan at a price  determined as provided in the Agreement.  The exercise
of such option will effect early  retirement of the  Certificates,  the Seller's
right to exercise  such option  being  subject to the Pool  Scheduled  Principal
Balance  of the  Mortgage  Loans as of the  Distribution  Date  upon  which  the
proceeds of such repurchase are  distributed  being less than ten percent of the
Cut-Off Date Aggregate Principal Balance.

<PAGE>


                                   ASSIGNMENT

FOR VALUE  RECEIVED, the undersigned  hereby sell(s),  assign(s) and transfer(s)
unto

- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------

    (Please print or typewrite name and address including postal zip code of
assignee)

the  beneficial   interest   evidenced  by  the  within  Mortgage   Pass-Through
Certificate and hereby  authorizes the transfer of registration of such interest
to assignee on the Certificate Register of the Trust Estate.

            I (We)  further  direct  the  Certificate  Registrar  to issue a new
Certificate  of a like  Denomination  or Percentage  Interest and Class,  to the
above named assignee and deliver such Certificate to the following address:

- ------------------------------------------------------------------------------
- ------------------------------------------------------------------------------


Social Security or other Identifying Number of Assignee:

- ------------------------------------------------------------------------------

Dated:



                                         ------------------------------------
                                         Signature by or on behalf of assignor



                                         ------------------------------------
                                                  Signature Guaranteed

<PAGE>



                            DISTRIBUTION INSTRUCTIONS

            The  assignee   should   include  the   following  for  purposes  of
distribution:

            Distributions  shall be made, if the assignee is eligible to receive
distributions in immediately available funds, by wire transfer or otherwise,  in
immediately                  available                  funds                 to
_________________________________________________________________     for    the
account  of   _______________________________________________   account   number
_____________,        or,       if        mailed       by       check,        to
_______________________________________________________.  Applicable  statements
should          be           mailed          to           ______________________
- ----------------------------------------------------------------.

            This information is provided by ______________________, the assignee
named above, or ___________________________________, as its agent.


<PAGE>


                                    EXHIBIT D

                                    RESERVED


<PAGE>


                                    EXHIBIT E

                               CUSTODIAL AGREEMENT

            THIS CUSTODIAL  AGREEMENT (as amended and supplemented  from time to
time,  the  "Agreement"),  dated as of  _____________,  by and among FIRST UNION
NATIONAL BANK, not individually, but solely as Trustee (including its successors
under the Pooling and Servicing Agreement defined below, the "Trustee"), NORWEST
ASSET  SECURITIES  CORPORATION  (together  with any  successor in interest,  the
"Seller"),  NORWEST BANK  MINNESOTA,  NATIONAL  ASSOCIATION  (together  with any
successor in interest or  successor  under the Pooling and  Servicing  Agreement
referred  to  below,  the  "Master  Servicer")  and  ___________________________
(together with any successor in interest or any successor  appointed  hereunder,
the "Custodian").


                           W I T N E S S E T H T H A T

            WHEREAS,  the Seller,  the Master  Servicer,  and the Trustee,  have
entered into a Pooling and Servicing Agreement dated as of May 28, 1999 relating
to the issuance of Mortgage  Pass-Through  Certificates,  Series  1999-16 (as in
effect  on the date of this  Agreement,  the  "Original  Pooling  and  Servicing
Agreement",  and as amended and supplemented from time to time, the "Pooling and
Servicing Agreement"); and

            WHEREAS,  the  Custodian  has agreed to act as agent for the Trustee
for  the  purposes  of  receiving  and  holding  certain   documents  and  other
instruments  delivered by the Seller under the Pooling and Servicing  Agreement,
all upon the terms and conditions and subject to the limitations hereinafter set
forth;

            NOW,  THEREFORE,  in  consideration  of the  premises and the mutual
covenants and agreements  hereinafter set forth,  the Trustee,  the Seller,  the
Master Servicer and the Custodian hereby agree as follows:


                                    ARTICLE I

                                   DEFINITIONS

            Capitalized  terms used in this  Agreement  and not  defined  herein
shall  have  the  meanings  assigned  in  the  Original  Pooling  and  Servicing
Agreement, unless otherwise required by the context herein.


                                   ARTICLE II

                          CUSTODY OF MORTGAGE DOCUMENTS

            Section  2.01  Custodian  to Act as Agent;  Acceptance  of Custodial
Files.  The  Custodian,  as the duly  appointed  agent of the  Trustee for these
purposes,  acknowledges  receipt  of the  Mortgage  Notes,  the  Mortgages,  the
assignments and other documents relating to the Mortgage Loans identified on the
schedule  attached hereto and declares that it holds and will hold such Mortgage
Notes,  Mortgages,  assignments  and other  documents and any similar  documents
received by the Trustee subsequent to the date hereof (the "Custodial Files") as
agent for the  Trustee,  in trust,  for the use and  benefit of all  present and
future Certificateholders.

            Section 2.02  Recordation  of  Assignments.  If any  Custodial  File
includes one or more  assignments  to the Trustee of Mortgage  Notes and related
Mortgages that have not been recorded,  each such assignment  shall be delivered
by  the  Custodian  to  the  Seller  for  the  purpose  of  recording  it in the
appropriate  public  office for real  property  records,  and the Seller,  at no
expense to the Custodian, shall promptly cause to be recorded in the appropriate
public office for real property  records each such  assignment and, upon receipt
thereof  from such  public  office,  shall  return each such  assignment  to the
Custodian.

            Section 2.03 Review of Custodial  Files. The Custodian  agrees,  for
the benefit of Certificateholders,  to review, in accordance with the provisions
of Section 2.01 of the Pooling and Servicing Agreement,  each Custodial File. If
in performing  the review  required by this Section 2.3 the Custodian  finds any
document or documents  constituting  a part of a Custodial File to be missing or
defective in any material  respect,  the Custodian  shall promptly so notify the
Seller, the Master Servicer and the Trustee.

            Section  2.04  Notification  of  Breaches  of  Representations   and
Warranties. Upon discovery by the Custodian of a breach of any representation or
warranty  made by the Seller or the Master  Servicer as set forth in the Pooling
and Servicing  Agreement,  the Custodian shall give prompt written notice to the
Seller, the Master Servicer and the Trustee.

            Section 2.05  Custodian to  Cooperate;  Release of Custodial  Files.
Upon the  payment in full of any  Mortgage  Loan,  or the  receipt by the Master
Servicer  of a  notification  that  payment in full will be escrowed in a manner
customary for such purposes,  the Master Servicer shall  immediately  notify the
Custodian by a certification  (which  certification shall include a statement to
the effect that all amounts  received or to be received in connection  with such
payment which are required to be deposited in the Certificate  Account  pursuant
to Section 3.02 of the Pooling and Servicing  Agreement  have been or will be so
deposited)  of a  Servicing  Officer  and shall  request  delivery  to it of the
Custodial File. The Custodian  agrees,  upon receipt of such  certification  and
request, promptly to release the related Custodial File to the Master Servicer.

            From time to time as is appropriate for the servicing or foreclosure
of any Mortgage  Loan,  the Master  Servicer  shall  deliver to the  Custodian a
certificate of a Servicing  Officer  requesting  that  possession of all, or any
document  constituting  part of, the  Custodial  File be  released to the Master
Servicer and  certifying as to the reason for such release and that such release
will not invalidate any insurance  coverage  provided in respect of the Mortgage
Loan. With such certificate,  the Master Servicer shall deliver to the Custodian
a receipt signed by a Servicing  Officer on behalf of the Master  Servicer,  and
upon receipt of the foregoing, the Custodian shall deliver the Custodial File or
such  document  to the Master  Servicer.  The Master  Servicer  shall cause each
Custodial  File or any  document  therein  so  released  to be  returned  to the
Custodian when the need therefor by the Master Servicer no longer exists, unless
(i) the Mortgage Loan has been liquidated and the Liquidation  Proceeds relating
to the  Mortgage  Loan have been  deposited  in the  Certificate  Account to the
extent  required by the Pooling and  Servicing  Agreement or (ii) the  Custodial
File or such document has been delivered to an attorney,  or to a public trustee
or other  public  official as required by law,  for  purposes of  initiating  or
pursuing legal action or other  proceedings for the foreclosure of the Mortgaged
Property  either  judicially  or  non-judicially,  and the Master  Servicer  has
delivered to the Custodian a certificate of a Servicing Officer certifying as to
the name and address of the Person to which such Custodial File or such document
were delivered and the purpose or purposes of such delivery. In the event of the
liquidation of a Mortgage  Loan,  the Custodian  shall deliver such receipt with
respect thereto to the Master  Servicer upon deposit of the related  Liquidation
Proceeds in the  Certificate  Account to the extent  required by the Pooling and
Servicing Agreement.

            Section 2.06 Assumption Agreements. In the event that any assumption
agreement or substitution of liability agreement is entered into with respect to
any Mortgage  Loan subject to this  Agreement in  accordance  with the terms and
provisions of the Pooling and Servicing  Agreement,  the Master  Servicer  shall
notify the Custodian  that such  assumption or  substitution  agreement has been
completed by  forwarding  to the  Custodian  the original of such  assumption or
substitution agreement,  which copy shall be added to the related Custodial File
and, for all purposes,  shall be considered a part of such Custodial File to the
same extent as all other documents and instruments constituting parts thereof.


                                   ARTICLE III

                            CONCERNING THE CUSTODIAN

            Section  3.01  Custodian  a Bailee  and Agent of the  Trustee.  With
respect to each Mortgage Note,  Mortgage and other documents  constituting  each
Custodian  File  which  are  delivered  to  the  Custodian,   the  Custodian  is
exclusively  the bailee and agent of the Trustee,  holds such  documents for the
benefit of  Certificateholders  and  undertakes  to perform such duties and only
such  duties  as are  specifically  set  forth in this  Agreement.  Except  upon
compliance  with the  provisions of Section 2.5 of this  Agreement,  no Mortgage
Note,  Mortgage or other document  constituting a part of a Custodial File shall
be delivered by the Custodian to the Seller or the Master  Servicer or otherwise
released from the possession of the Custodian.

            Section 3.02 Indemnification.  The Seller hereby agrees to indemnify
and hold the  Custodian  harmless  from and  against  all  claims,  liabilities,
losses,  actions,  suits  or  proceedings  at law  or in  equity,  or any  other
expenses,  fees or charges of any  character or nature,  which the Custodian may
incur or with which the  Custodian may be threatened by reasons of its acting as
custodian  under this  Agreement,  including  indemnification  of the  Custodian
against  any and all  expenses,  including  attorney's  fees if counsel  for the
Custodian has been approved by the Seller, and the cost of defending any action,
suit or proceedings or resisting any claim. Notwithstanding the foregoing, it is
specifically  understood and agreed that in the event any such claim, liability,
loss,  action,  suit or proceeding or other expense,  fees, or charge shall have
been caused by reason of any negligent act, negligent failure to act, or willful
misconduct  on the part of the  Custodian,  or which shall  constitute a willful
breach of its duties hereunder, the indemnification provisions of this Agreement
shall not apply.

            Section 3.03  Custodian May Own  Certificates.  The Custodian in its
individual or any other capacity may become the owner or pledgee of Certificates
with the same rights it would have if it were not Custodian.

            Section 3.04 Master Servicer to Pay  Custodian's  Fees and Expenses.
The Master  Servicer  covenants and agrees to pay to the Custodian  from time to
time, and the Custodian shall be entitled to,  reasonable  compensation  for all
services rendered by it in the exercise and performance of any of the powers and
duties hereunder of the Custodian, and the Master Servicer will pay or reimburse
the Custodian upon its request for all reasonable  expenses,  disbursements  and
advances  incurred  or made  by the  Custodian  in  accordance  with  any of the
provisions of this  Agreement  (including the  reasonable  compensation  and the
expenses and  disbursements  of its counsel and of all persons not  regularly in
its employ), except any such expense,  disbursement or advance as may arise from
its negligence or bad faith.

            Section 3.05 Custodian May Resign; Trustee May Remove Custodian. The
Custodian may resign from the  obligations  and duties hereby imposed upon it as
such  obligations  and duties  relate to its acting as Custodian of the Mortgage
Loans. Upon receiving such notice of resignation,  the Trustee shall either take
custody of the  Custodial  Files  itself and give prompt  notice  thereof to the
Seller,  the Master  Servicer and the Custodian or promptly  appoint a successor
Custodian by written  instrument,  in  duplicate,  one copy of which  instrument
shall be  delivered to the  resigning  Custodian  and one copy to the  successor
Custodian.  If the Trustee shall not have taken  custody of the Custodial  Files
and no  successor  Custodian  shall  have been so  appointed  and have  accepted
resignation,  the  resigning  Custodian  may  petition  any  court of  competent
jurisdiction for the appointment of a successor Custodian.

            The Trustee may remove the Custodian at any time. In such event, the
Trustee shall appoint, or petition a court of competent jurisdiction to appoint,
a successor Custodian  hereunder.  Any successor Custodian shall be a depository
institution  subject to supervision or examination by federal or state authority
and shall be able to satisfy the other requirements contained in Section 3.7.

            Any  resignation  or removal of the Custodian and  appointment  of a
successor  Custodian pursuant to any of the provisions of this Section 3.5 shall
become effective upon acceptance of appointment by the successor Custodian.  The
Trustee  shall give prompt  notice to the Seller and the Master  Servicer of the
appointment of any successor  Custodian.  No successor Custodian shall have been
appointed and accepted  appointment by the Trustee without the prior approval of
the Seller and the Master Servicer.

            Section 3.06 Merger or Consolidation  of Custodian.  Any Person into
which  the  Custodian  may be  merged  or  converted  or  with  which  it may be
consolidated,   or  any  Person   resulting  from  any  merger,   conversion  or
consolidation to which the Custodian shall be a party, or any Person  succeeding
to the  business  of the  Custodian,  shall be the  successor  of the  Custodian
hereunder,  without the  execution  or filing of any paper or any further act on
the  part  of  any  of the  parties  hereto,  anything  herein  to the  contrary
notwithstanding.

            Section 3.07 Representations of the Custodian.  The Custodian hereby
represents  that  it is a  depository  institution  subject  to  supervision  or
examination by a federal or state authority,  has a combined capital and surplus
of at least  $10,000,000 and is qualified to do business in the  jurisdiction in
which it will hold any Custodian File.


                                   ARTICLE IV

                            MISCELLANEOUS PROVISIONS

            Section 4.01 Notices.  All notices,  requests,  consents and demands
and other communications  required under this Agreement or pursuant to any other
instrument  or document  delivered  hereunder  shall be in writing  and,  unless
otherwise  specifically  provided,  may be delivered personally,  by telegram or
telex,  or by registered or certified  mail,  postage  prepaid,  return  receipt
requested,  at the  addresses  specified on the  signature  page hereof  (unless
changed by the particular party whose address is stated herein by similar notice
in writing), in which case the notice will be deemed delivered when received.

            Section  4.02  Amendments.   No  modification  or  amendment  of  or
supplement to this Agreement  shall be valid or effective  unless the same is in
writing and signed by all  parties  hereto,  and neither the Seller,  the Master
Servicer  nor the  Trustee  shall  enter  into any  amendment  hereof  except as
permitted by the Pooling and Servicing Agreement.  The Trustee shall give prompt
notice to the  Custodian  of any  amendment  or  supplement  to the  Pooling and
Servicing Agreement and furnish the Custodian with written copies thereof.

            Section  4.03  Governing  Law.  This  Agreement  shall  be  deemed a
contract made under the laws of the State of New York and shall be construed and
enforced in accordance with and governed by the laws of the State of New York.

            Section 4.04  Recordation of Agreement.  To the extent  permitted by
applicable  law, this  Agreement is subject to  recordation  in all  appropriate
public offices for real property records in all the counties or other comparable
jurisdictions in which any or all of the properties subject to the Mortgages are
situated,  and in any other  appropriate  public  recording office or elsewhere,
such  recordation  to be effected by the Master  Servicer  and at its expense on
direction by the Trustee,  but only upon direction  accompanied by an Opinion of
Counsel to the effect that such recordation  materially and beneficially affects
the interests of the Certificateholders.

            For the purpose of facilitating the recordation of this Agreement as
herein  provided  and  for  other  purposes,  this  Agreement  may  be  executed
simultaneously in any number of counterparts,  each of which  counterparts shall
be deemed to be an original,  and such counterparts shall constitute but one and
the same instrument.

            Section 4.05  Severability of Provisions.  If any one or more of the
covenants,  agreements,  provisions or terms of this Agreement  shall be for any
reason whatsoever held invalid, then such covenants,  agreements,  provisions or
terms  shall be  deemed  severable  from the  remaining  covenants,  agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability  of the other provisions of this Agreement or of the Certificates
or the rights of the holders thereof.

<PAGE>


            IN WITNESS WHEREOF,  this Agreement is executed as of the date first
above written.

Address:                               FIRST UNION NATIONAL BANK

230 South Tryon Street                 By:   _________________________________
Charlotte, North Carolina, 28288       Name: _________________________________
                                       Title:_________________________________

Address:                               NORWEST ASSET SECURITIES CORPORATION

7485 New Horizon Way                   By:   _________________________________
Frederick, Maryland 21703              Name: _________________________________
                                       Title:_________________________________

Address:                               NORWEST BANK MINNESOTA, NATIONAL
                                       ASSOCIATION

7485 New Horizon Way                   By:
Frederick, Maryland 21703              Name: _________________________________
                                       Title:_________________________________

Address:                               [CUSTODIAN]

                                       By:   _________________________________
                                       Name: _________________________________
                                       Title:_________________________________

<PAGE>



STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ____ day of _________,  19__,  before me, a notary public in
and for the State of ____________, personally appeared _______________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________________;   that  he  is  the   __________  of  Norwest  Asset
Securities Corporation a Delaware corporation,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said corporation.



                                        ---------------------------------------
                                                     Notary Public

[NOTARIAL SEAL]

<PAGE>



STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ____ day of _________,  19__,  before me, a notary public in
and for the State of ____________, personally appeared _______________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________________; that he is the __________ of Norwest Bank Minnesota,
National  Association,  a national banking association,  one of the parties that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.



                                        ---------------------------------------
                                                     Notary Public

[NOTARIAL SEAL]

<PAGE>



STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ___ day of ________, 19__, before me, a notary public in and
for the State of ____________,  personally appeared __________ _________,  known
to me who,  being  by me duly  sworn,  did  depose  and say that he  resides  at
__________________________;  that he is the  ____________________ of First Union
National Bank, a national banking association,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said association.



                                        ---------------------------------------
                                                     Notary Public

[NOTARIAL SEAL]

<PAGE>



STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ____ day of ________, 19 , before me, a notary public in and
for the State of __________, personally appeared __________ __________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________________;   that   he  is   the   _______________________   of
______________________,  a  _________________________,  one of the parties  that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said association.



                                        ---------------------------------------
                                                     Notary Public

[NOTARIAL SEAL]


<PAGE>


                                   EXHIBIT F-1

            [Schedule of Mortgage Loans Serviced by Norwest Mortgage
                 from locations other than Frederick, Maryland]

<TABLE>
NASCOR
NMI / 1999-16  Exhibit F-1
30 YEAR FIXED RATE NON RELOCATION LOANS
<CAPTION>

(i)             (ii)                                       (iii)           (iv)           (v)           (vi)          (vii)
- -----           ---------------------------    -----      --------       --------      --------      ----------     --------
                                                                                          NET
MORTGAGE                                                                 MORTGAGE      MORTGAGE       CURRENT       ORIGINAL
LOAN                                            ZIP       PROPERTY       INTEREST      INTEREST       MONTHLY        TERM TO
NUMBER          CITY               STATE       CODE         TYPE           RATE          RATE         PAYMENT       MATURITY
- --------        -----------------------------------------------------    --------      --------      ----------     --------
<S>            <C>                 <C>        <C>         <C>            <C>            <C>         <C>               <C>
7521517         MINNEAPOLIS         MN         55410        SFD           7.125          6.500       $1,958.97         360


</TABLE>
<PAGE>

<TABLE>
NASCOR
NMI / 1999-16  Exhibit F-1
30 YEAR FIXED RATE NON RELOCATION LOANS
(continued)

<CAPTION>




(i)           (viii)         (ix)           (x)          (xi)        (xii)       (xiii)       (xIv)          (xv)          (xvI)
- -----       ----------   --------------    ------     ---------   ----------    --------   -----------   -----------    -----------
                            CUT-OFF
MORTGAGE    SCHEDULED        DATE                                  MORTGAGE                  T.O.P.         MASTER         FIXED
LOAN         MATURITY      PRINCIPAL                               INSURANCE    SERVICE     MORTGAGE       SERVICE       RETAINED
NUMBER         DATE         BALANCE         LTV        SUBSIDY       CODE         FEE         LOAN           FEE           YIELD
- --------   -----------   --------------    ------     ---------   ----------    --------   -----------   -----------    -----------
<S>          <C>         <C>              <C>       <C>           <C>            <C>          <C>            <C>           <C>
7521517      1-Jan-29     $288,822.68      79.66                                     0.250                      0.017          0.358

                          $288,822.68


COUNT:                       1
WAC:                     7.125
WAM:                       356
WALTV:                   79.66


</TABLE>

<PAGE>


                                   EXHIBIT F-2

[Schedule of Mortgage Loans Serviced by Norwest Mortgage in Frederick, Maryland]


<TABLE>
NASCOR
NMI / 1999-16  Exhibit F-2
30 YEAR FIXED RATE NON RELOCATION  LOANS

<CAPTION>


(i)             (ii)                                                  (iii)          (iv)           (v)           (vi)
- -----           ------------------------------          -----        --------      --------       --------     ----------
                                                                                                    NET
MORTGAGE                                                                           MORTGAGE       MORTGAGE       CURRENT
LOAN                                                     ZIP         PROPERTY      INTEREST       INTEREST       MONTHLY
NUMBER          CITY                     STATE          CODE           TYPE          RATE           RATE         PAYMENT
- --------        -------------------------------------------------------------      --------       --------     ----------
<S>            <C>                        <C>         <C>             <C>          <C>           <C>          <C>
4699654         BRANCHBURG                 NJ           08876          SFD           7.375         6.500        $ 2,038.88
4716112         MIDDLEBURG                 FL           32068          SFD           7.375         6.500        $ 2,431.18
4765675         RHINEBECK                  NY           12572          SFD           7.750         6.500        $ 2,507.45
4818663         MARLBORO                   NJ           07746          SFD           6.500         6.233        $ 1,738.19
4826828         WOODBURY                   MN           55125          SFD           7.125         6.500        $ 1,757.74
4826909         BELLE MEAD                 NJ           08502          SFD           6.750         6.483        $ 1,707.12
4830823         VALLEY CENTER              KS           67147          SFD           7.375         6.500        $ 2,051.31
4839938         CLIVE                      IA           50325          SFD           7.250         6.500        $ 1,767.52
4862615         PHILADELPHIA               PA           19119          SFD           7.250         6.500        $ 2,046.53
4865850         ATLANTIC BEACH             NY           11509          SFD           7.250         6.500        $ 1,773.66
4879708         QUOGUE                     NY           11959          SFD           7.625         6.500        $ 2,548.06
4883014         INDIANAPOLIS               IN           46278          SFD           7.375         6.500        $ 1,740.51
4889278         CARLSBAD                   CA           92009          LCO           7.000         6.500         $ 399.18
4891309         CINCINNATI                 OH           45255          SFD           7.250         6.500        $ 2,414.90
4902152         CASTRO VALLEY              CA           94552          SFD           7.125         6.500        $ 2,863.31
4911891         ELIOT                      ME           03903          SFD           7.250         6.500        $ 2,721.21
4914886         TARZANA                    CA           91356          SFD           7.000         6.500        $ 2,128.97
4926758         BOLTON                     MA           01740          SFD           7.375         6.500        $ 2,156.98
4930049         CUPERTINO                  CA           95014          SFD           7.000         6.500        $ 3,193.46
4931751         SUGARLOAF KEY              FL           33042          SFD           7.750         6.500        $ 2,091.93
4941578         NEW YORK                   NY           10023          COP           7.250         6.500        $ 1,705.45
4945298         GLENDALE                   CA           91202          SFD           6.875         6.500        $ 1,970.79
4946637         FRANKLIN                   NJ           08873          SFD           7.625         6.500        $ 2,364.03
4947865         GLEN HEAD                  NY           11545          SFD           7.500         6.500        $ 2,220.01
4951209         EVERGREEN                  CO           80439          SFD           7.000         6.500        $ 2,001.23
4951252         BELLMORE                   NY           11710          SFD           7.250         6.500        $ 1,991.96
4951614         SAN JOSE                   CA           95138          LCO           7.250         6.500        $ 1,717.38
4952543         SAN MATEO                  CA           94403          SFD           7.000         6.500        $ 2,509.53
4954882         MONROE                     NY           10950          SFD           7.250         6.500        $ 1,732.73
4956347         CASTLE ROCK                CO           80104          SFD           7.125         6.500        $ 4,379.17
4956630         UPPER SADDLE RIVER         NJ           07458          SFD           7.125         6.500        $ 2,358.01
4958805         BRENTOOD                   TN           37027          SFD           6.875         6.500        $ 1,886.04
4958960         HINSDALE                   IL           60521          SFD           7.125         6.500        $ 2,436.17
4959853         GARDEN CITY                NY           11530          SFD           7.375         6.500        $ 5,180.07
4960261         ARMONK                     NY           10504          SFD           6.750         6.483        $ 2,529.53
4961404         HUNTINGTON                 NY           11743          SFD           7.125         6.500        $ 1,788.73
4962294         BRIGHTON                   MI           48116          SFD           7.375         6.500        $ 2,417.37
4962753         TAMPA                      FL           33647          SFD           6.500         6.233        $ 1,643.38
4962772         NEW YORK                   NY           10003          COP           6.750         6.483        $ 2,048.93
4962920         SAN JOSE                   CA           95120          SFD           7.375         6.500        $ 2,414.61
4964716         STOW                       MA           01775          SFD           6.875         6.500        $ 2,243.42
4965057         MONKTON                    MD           21111          SFD           7.375         6.500        $ 1,961.52
4965176         EDINA                      MN           55424          SFD           6.750         6.483        $ 2,545.75
4966864         HOUSTON                    TX           77056          PUD           7.000         6.500        $ 1,786.34
4969754         CARLISLE                   MA           01740          SFD           6.750         6.483        $ 3,209.92
4969995         MILL CREEK                 WA           98012          SFD           7.375         6.500        $ 1,795.76
4971043         MUTTONTOWN                 NY           11791          SFD           6.875         6.500        $ 3,941.58
4971379         LLOYD NECK                 NY           11743          SFD           6.500         6.233        $ 2,578.84
4971757         NEEDHAM                    MA           02492          SFD           7.250         6.500        $ 1,964.67
4972111         WESTBURY                   NY           11590          SFD           6.875         6.500        $ 1,644.30
4972456         FULLERTON                  CA           92831          SFD           7.000         6.500        $ 2,381.79
4972460         EDGEWATER                  MD           21037          SFD           7.125         6.500        $ 1,943.68
4972571         ORANGE                     CA           92867          SFD           7.125         6.500        $ 1,926.83
4973297         MOUNTAIN VIEW              CA           94040          SFD           7.250         6.500        $ 2,558.17
4973570         TEANECK                    NJ           07666          SFD           7.375         6.500        $ 1,899.36
4973794         NEW YORK                   NY           10023          HCO           7.125         6.500        $ 1,951.09
4974162         CRESTWOOD                  NY           10707          SFD           7.000         6.500        $ 1,783.02
4974292         GARDEN CITY                NY           11530          SFD           7.000         6.500        $ 2,588.03
4974421         INDIANOLA                  WA           98342          SFD           6.875         6.500        $ 2,069.33
4974446         VALLEY STREAM              NY           11581          SFD           6.875         6.500        $ 1,642.33
4975081         PALO ALTO                  CA           94303          SFD           7.000         6.500        $ 2,661.21
4975752         KATONAH                    NY           10536          SFD           7.125         6.500        $ 1,953.79
4976212         BEDFORD                    NH           03110          SFD           6.625         6.358        $ 2,132.24
4976217         WEST ROXBURY               MA           02132          SFD           7.125         6.500        $ 1,805.57
4976264         BEDFORD CORNERS            NY           10549          SFD           7.250         6.500        $ 2,012.42
4976354         SAN CARLOS                 CA           94070          SFD           7.000         6.500        $ 2,684.50
4978528         ENGLEWOOD CLIFFS           NJ           07632          SFD           7.250         6.500        $ 2,728.71
4978826         SCOTTSDALE                 AZ           85254          SFD           7.000         6.500        $ 1,871.17
4979176         CUPERTINO                  CA           95014          SFD           7.750         6.500        $ 2,421.48
4980418         SEA GIRT                   NJ           08750          SFD           6.375         6.108        $ 2,720.07
4980589         VIRGINIA BEACH             VA           23452          SFD           7.375         6.500        $ 1,709.42
4981144         PARK CITY                  UT           84060          SFD           7.625         6.500        $ 2,017.21
4982108         SUFFERN                    NY           10901          SFD           7.125         6.500        $ 2,128.95
4982310         LOOMIS                     CA           95650          SFD           7.250         6.500        $ 2,229.35
4982519         HAWTHORNE                  CA           90250          SFD           7.500         6.500        $ 1,964.80
4982626         PALO ALTO                  CA           94306          SFD           7.000         6.500        $ 2,195.50
4982663         REDWOOD CITY               CA           94062          SFD           7.125         6.500        $ 2,518.36
4982667         PHOENIXVILLE               PA           19460          SFD           6.750         6.483        $ 1,819.32
4982730         LOS ANGELES                CA           90025          LCO           7.125         6.500        $ 1,937.62
4982800         STAMFORD                   CT           06902          SFD           6.625         6.358        $ 1,728.84
4982814         PHOENIX                    AZ           85023          SFD           6.875         6.500        $ 1,806.56
4982950         SIMSBURY                   CT           06070          SFD           6.500         6.233        $ 2,370.26
4982958         NEW YORK                   NY           10017          HCO           7.375         6.500        $ 2,659.10
4983192         EVERETT                    WA           98203          SFD           6.625         6.358        $ 2,036.19
4983347         GERMANTOWN                 TN           38138          SFD           7.125         6.500        $ 2,829.61
4983855         AVALON                     NJ           08202          SFD           6.625         6.358        $ 3,022.27
4983877         CLINTON                    NC           28328          SFD           7.250         6.500        $ 1,782.19
4984058         MORGAN HILL                CA           95037          SFD           7.375         6.500        $ 1,712.88
4984215         RENO                       NV           89511          SFD           6.375         6.108        $ 1,653.26
4984343         POTOMAC                    MD           20854          SFD           6.875         6.500        $ 6,569.29
4984599         HUNTINGTON BEACH           CA           92649          SFD           7.125         6.500        $ 2,459.08
4984627         LOS GATOS                  CA           95030          SFD           7.125         6.500        $ 6,737.19
4985052         WASHINGTON                 TX           77833          SFD           7.250         6.500        $ 1,719.09
4985145         GILROY                     CA           95020          SFD           7.000         6.500        $ 1,623.34
4985333         WESTFORD                   MA           01886          SFD           6.625         6.358        $ 2,627.84
4985471         MERCER ISLAND              WA           98040          SFD           7.500         6.500        $ 2,097.64
4985557         COTO DE CAZA               CA           92679          SFD           7.125         6.500        $ 1,748.30
4985916         NORTHRIDGE                 CA           91326          SFD           7.500         6.500        $ 2,307.41
4986007         OCEAN CITY                 NJ           08226          LCO           7.500         6.500        $ 3,356.23
4986463         SUNNYVALE                  CA           94087          SFD           7.125         6.500        $ 3,368.60
4986606         DEARBORN HEIGHTS           MI           48127          LCO           7.375         6.500        $ 1,954.61
4986827         OAKDALE                    CA           95361          SFD           6.875         6.500        $ 1,655.47
4986877         RICHWOOD                   KY           41094          SFD           6.750         6.483        $ 4,215.89
4986937         NEW YORK                   NY           10019          HCO           7.000         6.500        $ 3,326.45
4987050         OVERLAND PARK              KS           66213          SFD           7.000         6.500        $ 1,886.80
4987192         FOSTER CITY                CA           94404          SFD           7.125         6.500        $ 2,297.39
4987199         HARRISON                   NY           10528          SFD           6.750         6.483        $ 3,567.29
4987429         WESTLAKE VILLAGE           CA           91361          SFD           7.625         6.500        $ 1,985.37
4987569         RYE                        NY           10580          SFD           7.000         6.500        $ 2,661.21
4987659         LAKE FORREST               CA           92630          SFD           7.875         6.500        $ 2,590.67
4987692         GAITHERSBURG               MD           20882          SFD           7.375         6.500        $ 1,761.23
4987969         AUSTIN                     TX           78731          SFD           7.000         6.500        $ 1,765.05
4988033         FLEMINGTON                 NJ           08822          SFD           7.000         6.500        $ 1,833.58
4988050         PENSACOLA                  FL           32501          SFD           6.875         6.500        $ 3,126.99
4988120         DIX HILLS                  NY           11746          SFD           6.250         5.983        $ 2,586.02
4988347         COLLEYVILLE                TX           76034          SFD           6.875         6.500        $ 1,865.68
4988396         LAWTON                     OK           73507          SFD           7.000         6.500        $ 1,862.85
4988461         CUPERTINO                  CA           95014          PUD           7.250         6.500        $ 2,414.91
4988503         DANVILLE                   CA           94526          SFD           7.000         6.500        $ 3,353.13
4988618         SAN RAFAEL                 CA           94903          LCO           7.000         6.500        $ 2,102.36
4988778         WEST ISLIP                 NY           11795          SFD           7.375         6.500        $ 2,016.77
4989023         WAYNE                      NJ           07470          SFD           7.250         6.500        $ 2,148.86
4989283         NEW ROCHELLE               NY           10804          SFD           7.250         6.500        $ 2,728.71
4989682         MCLEAN                     VA           22101          SFD           6.500         6.233        $ 2,420.83
4989920         REDDING                    CT           06896          SFD           7.000         6.500        $ 2,315.26
4990006         RYE BROOK                  NY           10573          SFD           7.375         6.500        $ 2,707.45
4990766         CUPERTINO                  CA           95014          SFD           6.750         6.483        $ 1,816.08
4991129         LOS ANGELES                CA           90036          SFD           7.500         6.500        $ 3,487.34
4991164         DIX HILLS                  NY           11746          SFD           6.750         6.483        $ 1,945.80
4991221         PORTLAND                   OR           97217          SFD           7.375         6.500        $ 2,175.63
4991227         WHITE PLANES               NY           10605          SFD           7.500         6.500        $ 1,957.80
4991309         MANHASSET                  NY           11030          SFD           7.000         6.500        $ 2,328.56
4991606         HOLMDEL                    NJ           07733          SFD           7.500         6.500        $ 2,104.64
4991631         MONTICELLO                 IN           47960          SFD           7.250         6.500        $ 3,750.95
4991787         CHEVY CHASE                MD           20815          SFD           7.125         6.500        $ 2,738.67
4991930         WINTER PARK                FL           32789          SFD           7.750         6.500        $ 2,022.17
4992096         DURHAM                     CA           95938          SFD           7.125         6.500        $ 2,263.70
4992302         FREMONT                    CA           94539          SFD           7.875         6.500        $ 2,900.28
4993397         TULSA                      OK           74120          SFD           7.500         6.500        $ 1,946.26
4993400         TULSA                      OK           74137          SFD           7.250         6.500        $ 2,046.53
4993872         SAN JOSE                   CA           95120          SFD           7.000         6.500        $ 1,955.99
4994122         OAK PARK                   CA           91301          SFD           7.375         6.500        $ 1,765.37
4994152         ISSAQUAH                   WA           98029          SFD           7.250         6.500        $ 2,049.60
4994159         NEW YORK                   NY           10025          HCO           7.375         6.500        $ 2,900.84
4994602         ATLANTA                    GA           30308          SFD           7.000         6.500        $ 2,494.89
4994717         LONG GROVE                 IL           60047          SFD           7.250         6.500        $ 3,069.80
4994740         EDINA                      MN           55424          SFD           7.250         6.500        $ 3,165.30
4994842         WOODINVILLE                WA           98072          SFD           7.125         6.500        $ 2,142.43
4995194         BRONXVILLE                 NY           10708          SFD           6.875         6.500        $ 1,655.47
4995617         CHESTERFIELD               MO           63017          SFD           7.125         6.500        $ 2,253.26
4995735         YORBA LINDA                CA           92886          SFD           7.125         6.500        $ 2,021.16
4995800         LOS ALTOS                  CA           94022          SFD           6.875         6.500        $ 4,270.04
4995989         FORT WORTH                 TX           76107          SFD           7.250         6.500        $ 6,293.08
4996274         ROCKVILLE                  MD           20853          SFD           6.500         6.233        $ 2,114.27
4996320         EAST HAMPTON               NY           11937          SFD           7.375         6.500        $ 1,830.29
4996418         HOUSTON                    TX           77005          SFD           6.875         6.500        $ 2,067.35
4996516         LAKE OSWEGO                OR           97034          SFD           7.000         6.500        $ 1,783.02
4996776         DANVILLE                   IN           46122          SFD           7.250         6.500        $ 2,387.62
4996786         TULSA                      OK           74137          SFD           7.500         6.500        $ 1,879.49
4996842         SUMNER                     WA           98390          SFD           7.000         6.500        $ 3,186.80
4996895         ARLINGTON                  TX           76013          SFD           7.000         6.500        $ 1,796.32
4996914         LONGMONT                   CO           80503          SFD           7.125         6.500        $ 2,112.11
4996942         SAN JOSE                   CA           95123          SFD           7.125         6.500        $ 1,996.91
4996976         NORTH GRANBY               CT           06060          SFD           7.250         6.500        $ 2,120.24
4997019         ESSEX                      MA           01929          SFD           7.750         6.500        $ 2,039.31
4997057         OAKLAND                    CA           94605          SFD           7.250         6.500        $ 2,184.33
4997111         LOS ANGELES                CA           90006          SFD           7.250         6.500        $ 1,800.95
4997162         BOTHELL                    WA           98011          SFD           6.875         6.500        $ 1,872.25
4997225         HAMPTON                    VA           23669          SFD           6.875         6.500        $ 1,771.09
4997867         REDONDO BEACH              CA           90277          SFD           7.375         6.500        $ 2,512.68
4997973         SAN DIEGO                  CA           92109          SFD           7.250         6.500        $ 2,236.86
4998052         FAIRFAX                    CA           94930          SFD           7.250         6.500        $ 2,200.02
4998168         DILLON BEACH               CA           94929          SFD           7.375         6.500        $ 1,785.40
4998309         DALLAS                     TX           75225          SFD           7.250         6.500        $ 2,387.62
4998468         ENCINO                     CA           91316          SFD           7.625         6.500        $ 3,362.03
4998493         LEXINGTON                  MA           02173          SFD           6.750         6.483        $ 2,734.49
4998604         JACKSON                    MS           39211          SFD           7.000         6.500        $ 1,896.11
4998632         BRISBANE                   CA           94005          LCO           7.250         6.500        $ 2,612.74
4998749         FREMONT                    CA           94536          SFD           7.375         6.500        $ 1,856.54
4998953         NEW CANAAN                 CT           06840          SFD           6.750         6.483        $ 3,891.59
4999331         SAN DIEGO                  CA           92123          LCO           7.250         6.500        $ 2,203.43
4999464         EAST HAMPTON               NY           11937          SFD           7.500         6.500        $ 1,778.81
5000142         CHISAGO CITY               MN           55013          SFD           6.500         6.233        $ 1,769.79
5000435         CINCINNATI                 OH           45244          SFD           6.500         6.233        $ 2,174.32
5000449         SANTA CLARA                CA           95050          SFD           7.625         6.500        $ 1,911.05
5000457         BEDMINSTER                 NJ           07921          SFD           7.500         6.500        $ 1,783.00
5000494         VALENCIA                   CA           91354          SFD           7.250         6.500        $ 2,019.25
5000582         NAPERVILLE                 IL           60564          SFD           6.625         6.358        $ 1,824.89
5000717         BIRMINGHAM                 AL           35242          SFD           7.500         6.500        $ 4,544.20
5001015         TEQUESTA                   FL           33469          SFD           7.000         6.500        $ 2,714.44
5001025         BIRMINGHAM                 AL           35216          SFD           7.375         6.500        $ 3,011.35
5001093         RANCHO PALOS VERDES        CA           90275          SFD           6.875         6.500        $ 2,837.94
5001140         TACOMA                     WA           98446          SFD           7.375         6.500        $ 1,799.21
5001147         BIRMINGHAM TOWNSHIP        PA           19382          SFD           7.375         6.500        $ 2,811.05
5001166         SAN JOSE                   CA           95131          SFD           7.375         6.500        $ 2,728.17
5001242         BERKELEY                   CA           94705          SFD           7.375         6.500        $ 2,538.24
5001274         SAN FRANCISCO              CA           94117          SFD           7.375         6.500        $ 3,204.74
5001430         HUBBARD                    OH           44425          SFD           7.375         6.500        $ 2,926.05
5001505         FORT WORTH                 TX           76107          SFD           7.125         6.500        $ 4,379.17
5001510         SAN DIEGO                  CA           92109          LCO           7.000         6.500        $ 3,033.78
5001566         MOUNTAIN VIEW              CA           94041          SFD           7.250         6.500        $ 2,421.73
5001587         AURORA                     CO           80015          SFD           7.000         6.500        $ 1,861.18
5001711         CENTREVILLE                DE           19807          SFD           6.750         6.483        $ 1,816.07
5001717         CINCINNATI                 OH           45246          SFD           7.000         6.500        $ 1,862.85
5001861         WINCHESTER                 MA           01890          SFD           7.750         6.500        $ 2,149.24
5001980         CARLSBAD                   CA           92009          SFD           7.000         6.500        $ 1,939.02
5002018         DALLAS                     TX           75230          SFD           7.000         6.500        $ 2,687.83
5002020         HANOVER                    MA           02339          SFD           7.000         6.500        $ 3,579.33
5002084         LAGUNA NIGUEL              CA           92677          SFD           7.000         6.500        $ 1,862.85
5002202         GREENWICH                  CT           06831          SFD           7.375         6.500        $ 2,141.48
5002451         TETON VILLAGE              WY           83025          SFD           7.125         6.500        $ 3,702.09
5002539         TOWER                      MN           55790          SFD           6.500         6.233        $ 2,621.82
5002545         SAINT CHARLES              IL           60175          SFD           7.000         6.500        $ 2,222.12
5002665         GLEN MILLS                 PA           19342          SFD           6.625         6.358        $ 1,760.86
5002710         SONOMA                     CA           95476          SFD           7.500         6.500        $ 2,090.66
5002740         JUPITER                    FL           33458          SFD           7.375         6.500        $ 2,237.79
5002760         SAN JOSE                   CA           95135          SFD           7.750         6.500        $ 2,808.34
5002788         NEW YORK                   NY           10013          HCO           7.250         6.500        $ 2,987.93
5002807         SEATTLE                    WA           98105          SFD           7.000         6.500        $ 2,123.65
5002899         SONOMA                     CA           95476          SFD           7.125         6.500        $ 2,188.24
5003147         MANHATTAN BEACH            CA           90266          SFD           6.875         6.500        $ 2,627.72
5003156         OAK PARK                   CA           91301          SFD           7.375         6.500        $ 1,916.63
5003198         THOUSAND OAKS              CA           91362          SFD           7.250         6.500        $ 1,910.10
5003392         TUXEDO PARK                NY           10987          SFD           7.500         6.500        $ 2,461.24
5003601         SUNNYVALE                  CA           94087          SFD           7.250         6.500        $ 2,237.54
5003806         WESTON                     CT           06883          SFD           7.250         6.500        $ 2,046.53
5003918         DALLAS                     TX           75230          SFD           6.750         6.483        $ 3,567.29
5004035         AUSTIN                     TX           78730          SFD           6.750         6.483        $ 2,429.00
5004042         LAREDO                     TX           78041          SFD           7.250         6.500        $ 1,841.88
5004138         PARKLAND                   FL           33067          SFD           7.125         6.500        $ 2,021.16
5004185         TIBURON                    CA           94920          SFD           7.250         6.500        $ 5,542.69
5004197         LAFAYETTE                  CA           94549          SFD           7.250         6.500        $ 3,342.67
5004270         STAMFORD                   CT           06903          SFD           6.625         6.358        $ 2,061.81
5004350         COLUMBIA                   MO           65203          SFD           7.375         6.500        $ 2,357.27
5004363         NOVATO                     CA           94945          SFD           7.625         6.500        $ 3,666.38
5004370         MENLO PARK                 CA           94025          SFD           7.125         6.500        $ 2,627.50
5004401         SAN DIEGO                  CA           92131          SFD           7.125         6.500        $ 1,810.29
5004423         SEATTLE                    WA           98105          SFD           7.000         6.500        $ 2,787.62
5004427         SUNNYVALE                  CA           94087          SFD           7.750         6.500        $ 2,185.06
5004529         PALO ALTO                  CA           94306          SFD           7.500         6.500        $ 2,293.43
5004549         CHERRY HILLS VILLAGE       CO           80110          SFD           6.875         6.500        $ 3,659.10
5004604         REDMOND                    WA           98053          SFD           7.250         6.500        $ 2,114.75
5004812         SANTA CLARA                CA           95051          SFD           7.750         6.500        $ 2,084.76
5004854         AUDUBON                    PA           19403          SFD           7.000         6.500        $ 2,297.69
5004870         SANTA FE                   NM           87505          SFD           7.000         6.500        $ 1,646.63
5004896         LYNBROOK                   NY           11563          SFD           7.875         6.500         $ 906.34
5004909         SUNNYVALE                  CA           94087          SFD           7.875         6.500        $ 1,979.44
5005062         YORBA LINDA                CA           92886          SFD           7.125         6.500        $ 4,257.91
5005171         LOS ALAMITOS               CA           90720          SFD           7.375         6.500        $ 1,747.41
5005238         BETHESDA                   MD           20817          SFD           6.750         6.483        $ 1,660.42
5005289         SAN FRANCISCO              CA           94132          SFD           7.375         6.500        $ 2,590.03
5005305         NOVATO                     CA           94949          SFD           7.500         6.500        $ 2,129.11
5005362         WEBSTER GROVES             MO           63119          SFD           7.125         6.500        $ 1,953.79
5005369         NOVATO                     CA           94945          SFD           7.375         6.500        $ 1,906.27
5005370         SAN FRANCISCO              CA           94111          LCO           7.250         6.500        $ 2,246.28
5005383         SANTA BARBARA              CA           93111          SFD           7.750         6.500        $ 2,163.57
5005405         GREEN OAKS                 IL           60048          SFD           7.625         6.500        $ 2,484.36
5005439         NORTH REDINGTON BEAC       FL           33708          SFD           7.375         6.500        $ 1,806.12
5005444         SAN JOSE                   CA           95129          SFD           7.875         6.500        $ 2,102.71
5005452         MILPITAS                   CA           95035          SFD           7.875         6.500        $ 2,813.27
5005460         SAN JOSE                   CA           95129          SFD           7.625         6.500        $ 2,123.39
5005478         SAN JOSE                   CA           95120          SFD           7.375         6.500        $ 2,405.88
5005842         WILTON                     CT           06897          SFD           7.500         6.500        $ 3,845.68
5005904         CHINO HILLS                CA           91709          SFD           7.125         6.500        $ 1,751.67
5006095         CAPE CORAL                 FL           33914          SFD           7.125         6.500        $ 2,182.85
5006096         MILFORD                    MI           48380          SFD           7.500         6.500        $ 2,258.47
5006345         HERMOSA BEACH              CA           90254          SFD           7.250         6.500        $ 3,656.47
5006517         ST. GEORGE                 UT           84790          SFD           7.250         6.500        $ 2,630.47
5006522         SAN FRANCISCO              CA           94108          HCO           7.375         6.500        $ 2,817.96
5006829         SAN DIEGO                  CA           92131          SFD           7.000         6.500        $ 2,461.62
5007001         AUSTIN                     TX           78731          SFD           6.875         6.500        $ 2,470.06
5007188         SUNNYVALE                  CA           94087          SFD           6.500         6.233        $ 1,896.21
5007319         ANAHEIM                    CA           92807          SFD           7.375         6.500        $ 1,989.15
5007358         SANDY                      UT           84092          SFD           6.875         6.500        $ 2,627.72
5007396         SAN JOSE                   CA           95135          SFD           7.250         6.500        $ 3,465.46
5007397         WESTPORT                   CT           06880          SFD           7.000         6.500        $ 2,508.20
5007404         ALAMEDA                    CA           94501          SFD           7.125         6.500        $ 1,994.21
5007473         FREMONT                    CA           94539          SFD           7.750         6.500        $ 3,159.38
5007533         NASHVILLE                  TN           37220          SFD           7.000         6.500        $ 1,975.94
5007553         SAN FRANCISCO              CA           94108          HCO           7.250         6.500        $ 2,165.37
5007599         SANTA CLARA                CA           95051          SFD           7.125         6.500        $ 1,819.05
5007601         MISSION VIEJO              CA           92692          SFD           7.000         6.500        $ 2,162.24
5007928         DANVILLE                   CA           94506          SFD           7.875         6.500        $ 3,624.77
5008016         SAN JOSE                   CA           95128          SFD           7.375         6.500        $ 1,806.81
5008017         LAFITTE                    LA           70067          SFD           7.250         6.500        $ 1,862.35
5008167         NORTH MIAMI BEACH          FL           33160          SFD           7.375         6.500        $ 3,038.98
5008197         CUPERTINO                  CA           95014          SFD           7.125         6.500        $ 2,004.31
5008278         FREMONT                    CA           94539          SFD           7.500         6.500        $ 1,908.86
5008335         CUPERTINO                  CA           95014          SFD           7.875         6.500        $ 1,957.69
5008416         SAN CARLOS                 CA           94070          SFD           7.000         6.500        $ 2,428.36
5008472         LAS FLORES                 CA           92688          SFD           7.250         6.500        $ 1,825.84
5008514         AGOURA HILLS               CA           91301          SFD           7.250         6.500        $ 1,725.91
5008546         LAS VEGAS                  NV           89113          SFD           7.250         6.500        $ 1,705.44
5008548         REDWOOD CITY               CA           94061          SFD           7.250         6.500        $ 2,251.18
5008638         SAN DIEGO                  CA           92116          SFD           7.250         6.500        $ 1,715.67
5008645         LAGUNA BEACH               CA           92651          SFD           7.375         6.500        $ 1,788.51
5009028         MILPITAS                   CA           95035          SFD           7.500         6.500        $ 2,223.51
5009157         CAMARILLO                  CA           93012          SFD           7.250         6.500        $ 1,875.98
5009160         SAN JOSE                   CA           95135          SFD           7.125         6.500        $ 2,661.19
5009178         PLACERVILLE                CA           95667          SFD           7.250         6.500        $ 2,077.23
5009208         LA CANADA FLINTRIDGE       CA           91011          SFD           7.250         6.500        $ 3,540.50
5009312         NORTHRIDGE                 CA           91326          SFD           7.250         6.500        $ 1,903.27
5009916         SOUTHAMPTON                NY           11968          SFD           7.625         6.500        $ 1,677.48
5010023         SAN JOSE                   CA           95131          SFD           7.000         6.500        $ 2,498.22
5010030         PLEASANTON                 CA           94588          SFD           7.750         6.500        $ 2,185.78
5010060         LAFAYETTE                  CA           94549          SFD           7.000         6.500        $ 2,927.34
5010070         ALAMEDA                    CA           94501          SFD           7.250         6.500        $ 1,705.45
5010187         SUNNYVALE                  CA           94087          SFD           7.250         6.500        $ 2,114.75
5010247         CUPERTINO                  CA           95014          SFD           7.750         6.500        $ 2,342.67
5010270         TORRANCE                   CA           90505          SFD           7.500         6.500        $ 1,966.20
5010340         CHINO HILLS                CA           91709          SFD           7.500         6.500        $ 2,255.67
5010397         ANNAPOLIS                  MD           21401          SFD           6.750         6.483        $ 1,913.36
5010420         AUSTIN                     TX           78703          SFD           6.875         6.500        $ 3,186.10
5010447         AURORA                     CO           80016          SFD           6.875         6.500        $ 3,186.10
5010472         LAGUNA BEACH               CA           92651          SFD           7.000         6.500        $ 1,829.59
5010562         WESTPORT                   CT           06880          SFD           7.125         6.500        $ 2,021.16
5010670         COTTAGE GROVE              OR           97424          SFD           7.125         6.500        $ 2,122.21
5010860         CAMPBELL                   CA           95008          SFD           7.625         6.500        $ 2,575.38
5010910         ROSS                       CA           94957          SFD           7.250         6.500        $ 3,683.76
5010999         MISSION VIEJO              CA           92692          SFD           7.375         6.500        $ 2,503.70
5011046         FREMONT                    CA           94539          SFD           7.125         6.500        $ 3,368.60
5011247         GLENDALE                   CA           91202          SFD           7.375         6.500        $ 3,515.54
5011261         SAN JOSE                   CA           95120          SFD           7.125         6.500        $ 2,223.28
5011508         LOS GATOS                  CA           95032          SFD           7.125         6.500        $ 1,903.25
5011678         SAN MATEO                  CA           94404          LCO           7.250         6.500        $ 2,128.39
5011739         MARIETTA                   GA           30067          SFD           7.750         6.500        $ 2,261.72
5012088         LAGUNA NIGUEL              CA           92677          SFD           7.000         6.500        $ 1,697.86
5012221         LAGUNA NIGUEL              CA           92677          SFD           7.375         6.500        $ 2,282.69
5012327         FREMONT                    CA           94539          SFD           7.375         6.500        $ 3,453.38
5012337         SAN JOSE                   CA           95132          SFD           7.375         6.500        $ 2,763.05
5012481         POTOMAC                    MD           20854          SFD           7.000         6.500        $ 2,548.11
5012614         COLORADO SPRINGS           CO           80906          SFD           7.000         6.500        $ 1,696.52
5012691         IRVINE                     CA           92714          SFD           7.000         6.500        $ 1,683.22
5012933         UNIVERSITY CITY            MO           63130          SFD           7.125         6.500        $ 1,852.73
5012980         DANVILLE                   CA           94526          SFD           7.625         6.500        $ 2,576.37
5012995         ORINDA                     CA           94563          SFD           7.875         6.500        $ 3,451.34
5013096         FREMONT                    CA           94539          SFD           7.750         6.500        $ 2,349.84
5013262         SANTA CLARA                CA           95051          SFD           7.875         6.500        $ 1,957.69
5013273         SUDBURY                    MA           01776          SFD           7.500         6.500        $ 2,482.22
5013429         SACRAMENTO                 CA           95831          SFD           7.625         6.500        $ 1,859.77
5013559         BOCA RATON                 FL           33486          SFD           7.000         6.500        $ 1,850.88
5013599         CEDAR PARK                 TX           78613          SFD           7.000         6.500        $ 2,022.52
5013927         NORFOLK                    VA           23505          SFD           6.750         6.483        $ 1,996.71
5014175         SAN JOSE                   CA           95129          SFD           7.875         6.500        $ 2,980.04
5014428         MARCO ISLAND               FL           34145          SFD           7.125         6.500        $ 1,940.31
5014450         WALNUT                     CA           91789          LCO           6.750         6.483        $ 1,849.48
5014482         NEWPORT BEACH              CA           92660          SFD           7.250         6.500        $ 2,258.01
5014654         CAMPBELL                   CA           95008          SFD           7.625         6.500        $ 2,571.92
5014805         TIBURON                    CA           94920          LCO           7.125         6.500        $ 2,492.76
5014892         VIRGINIA BEACH             VA           32455          SFD           7.125         6.500        $ 1,886.42
5014893         SAN JOSE                   CA           95119          SFD           7.375         6.500        $ 1,914.56
5015070         GOLETA                     CA           93117          SFD           6.875         6.500        $ 2,128.45
5015130         DANVILLE                   CA           94526          PUD           7.375         6.500        $ 1,847.56
5015423         CUPERTINO                  CA           95014          SFD           7.125         6.500        $ 2,034.63
5015574         SANTA BARBARA              CA           93105          SFD           6.875         6.500        $ 2,378.09
5015616         SANTA BARBARA              CA           93108          SFD           7.000         6.500        $ 2,641.26
5015676         MOUNTAIN VIEW              CA           94040          SFD           7.125         6.500        $ 3,372.64
5015713         LOS ALTOS                  CA           94022          SFD           7.250         6.500        $ 3,376.78
5015749         BELTON                     MO           64012          SFD           7.125         6.500        $ 2,273.80
5015759         PALO ALTO                  CA           94303          SFD           7.625         6.500        $ 2,052.61
5015798         SAN MATEO                  CA           94404          SFD           7.250         6.500        $ 1,910.10
5015829         CUPERTINO                  CA           95014          SFD           7.625         6.500        $ 2,958.58
5015880         SAN MARINO                 CA           91108          SFD           7.375         6.500        $ 2,177.70
5015936         EDMONDS                    WA           98026          SFD           7.500         6.500        $ 1,977.03
5016039         WOODINVILLE                WA           98072          SFD           7.375         6.500        $ 2,348.30
5016128         AUSTIN                     TX           78733          SFD           6.750         6.483        $ 2,557.75
5016224         SUNNYVALE                  CA           94086          SFD           7.250         6.500        $ 1,760.02
5016244         AVON                       NC           27915          SFD           7.000         6.500        $ 3,160.19
5016299         SARATOGA                   CA           95070          SFD           7.500         6.500        $ 2,237.49
5016582         CUPERTINO                  CA           95014          SFD           7.125         6.500        $ 2,526.45
5016638         SARATOGA                   CA           95070          SFD           7.000         6.500        $ 3,589.98
5016648         CUPERTINO                  CA           95014          SFD           7.125         6.500        $ 3,031.74
5016736         AGOURA HILLS               CA           91301          SFD           7.000         6.500        $ 1,696.52
5016737         WALNUT CREEK               CA           94596          SFD           7.125         6.500        $ 1,920.06
5016744         FREMONT                    CA           94555          SFD           7.250         6.500        $ 1,730.00
5016765         SAN JOSE                   CA           95138          PUD           7.000         6.500        $ 3,566.03
5016780         FOOTHILL RANCH             CA           92610          PUD           7.250         6.500        $ 2,182.96
5016788         SAN MATEO                  CA           94401          SFD           7.125         6.500        $ 2,533.18
5016806         SAN MATEO                  CA           94403          SFD           7.125         6.500        $ 1,926.84
5016993         WARREN                     NJ           07060          SFD           7.000         6.500        $ 2,381.79
5017113         AMERICAN FORK              UT           84003          SFD           7.125         6.500        $ 1,839.25
5017250         PASADENA                   CA           91105          SFD           7.250         6.500        $ 2,275.06
5017285         GREENVILLE                 SC           29615          SFD           6.875         6.500        $ 1,732.32
5017307         SEATTLE                    WA           98115          SFD           7.125         6.500        $ 2,748.78
5017373         ENUMCLAW                   WA           98022          SFD           7.375         6.500        $ 1,790.23
5017519         PLANO                      TX           75093          SFD           6.875         6.500        $ 2,548.89
5017631         MILL CREEK                 WA           98012          SFD           7.125         6.500        $ 1,794.12
5017749         HALF MOON BAY              CA           94019          SFD           7.125         6.500        $ 2,371.49
5017800         SAN JOSE                   CA           95129          SFD           7.125         6.500        $ 2,501.19
5017830         MOUNTAIN VIEW              CA           94040          SFD           6.750         6.483        $ 2,140.38
5017838         TEMECULA                   CA           92562          SFD           7.375         6.500        $ 2,196.35
5017873         MISSION VIEJO              CA           92692          SFD           6.875         6.500        $ 1,951.08
5018198         BELLEVUE                   WA           98006          SFD           7.000         6.500        $ 2,676.51
5018259         ANAHEIM                    CA           92807          SFD           7.125         6.500        $ 3,368.59
5018264         LOS ALTOS                  CA           94022          SFD           7.000         6.500        $ 3,406.35
5018294         LIVERMORE                  CA           94550          SFD           7.375         6.500        $ 1,808.53
5018350         OREM                       UT           84058          SFD           6.625         6.358        $ 2,126.47
5018357         MILTON                     MA           02186          SFD           7.250         6.500        $ 2,244.36
5018369         WESTMINSTER                CA           92683          SFD           7.125         6.500        $ 2,000.95
5018379         GLENDALE                   CA           91206          SFD           7.000         6.500        $ 1,889.46
5018421         BENICIA                    CA           94510          SFD           7.250         6.500        $ 1,691.80
5018442         TRABUCO CANYON             CA           92679          SFD           7.000         6.500        $ 1,829.58
5018457         GLENDALE                   CA           91206          SFD           7.250         6.500        $ 1,398.46
5018460         CARLSBAD                   CA           92009          SFD           6.875         6.500        $ 2,562.02
5018465         PLAINFIELD                 IL           60544          SFD           6.750         6.483        $ 1,945.79
5018481         VISTA                      CA           92083          SFD           7.125         6.500         $ 976.89
5018489         PLAINFIELD                 IN           46168          SFD           7.125         6.500        $ 1,886.41
5018491         LAUREL                     MD           20723          SFD           6.750         6.483        $ 1,660.41
5018500         TORRANCE                   CA           90505          SFD           7.125         6.500        $ 1,886.41
5018515         IRVINE                     CA           92606          SFD           7.375         6.500        $ 1,902.46
5018533         LAS VEGAS                  NV           89113          SFD           7.250         6.500        $ 1,948.30
5018536         BURLINGAME                 CA           94010          SFD           6.875         6.500        $ 2,529.18
5018538         SAN MATEO                  CA           94403          SFD           7.250         6.500        $ 1,855.52
5018589         CAMPBELL                   CA           95008          SFD           7.000         6.500        $ 2,062.44
5018854         GLENDALE                   CA           91201          SFD           7.375         6.500        $ 1,740.51
5018883         MANHATTAN BEACH            CA           90266          SFD           7.125         6.500        $ 1,984.78
5018895         SAN JOSE                   CA           95129          SFD           7.875         6.500        $ 3,132.30
5019053         LAWRENCE                   KS           66047          SFD           6.875         6.500        $ 3,203.19
5019194         SAN JOSE                   CA           95123          SFD           7.000         6.500        $ 1,961.98
5019291         GLENDALE                   CA           91208          SFD           7.000         6.500        $ 2,794.28
5019308         FREMONT                    CA           94536          SFD           7.500         6.500        $ 1,796.99
5019329         SARATOGA                   CA           95070          SFD           7.250         6.500        $ 2,728.71
5019341         SAN JOSE                   CA           95129          SFD           6.875         6.500        $ 3,058.66
5019374         DANBURY                    CT           06811          SFD           7.250         6.500        $ 1,998.78
5019811         REDONDO BEACH              CA           90277          LCO           7.125         6.500        $ 2,566.87
5019840         SIMI VALLEY                CA           93065          SFD           7.000         6.500        $ 3,239.36
5019855         HONOLULU                   HI           96822          SFD           7.000         6.500        $ 2,727.74
5019966         SAN FRANCISCO              CA           94123          SFD           7.125         6.500        $ 3,031.74
5020452         SAN MARINO                 CA           91108          SFD           7.125         6.500        $ 3,895.78
5020827         LAGUNA HILLS               CA           92653          SFD           7.250         6.500        $ 1,809.14
5021007         REDWOOD CITY               CA           94065          SFD           7.000         6.500        $ 2,162.24
5021008         NORFOLK                    VA           23508          SFD           6.875         6.500        $ 1,803.27
5021033         SAN MATEO                  CA           94402          SFD           7.125         6.500        $ 3,415.76
5021040         MILLBRAE                   CA           94030          SFD           6.875         6.500        $ 1,970.79
5021259         SOUTH SAN FRANCISCO        CA           94080          SFD           7.125         6.500        $ 1,681.60
5021740         LONG BEACH                 CA           90807          SFD           7.125         6.500        $ 2,262.35
5021764         LA CANADA-FLINTRIDGE       CA           91011          SFD           7.250         6.500        $ 2,558.17
5021781         IRVINE                     CA           92614          LCO           7.000         6.500        $ 2,125.65
5021801         COSTA MESA                 CA           92627          SFD           7.000         6.500        $ 2,341.87
5021827         SAN JOSE                   CA           95120          SFD           7.000         6.500        $ 2,594.68
5021829         SOUTHLAKE                  TX           76092          SFD           7.125         6.500        $ 2,268.42
5021872         LAGUNA NIGUEL              CA           92677          SFD           7.375         6.500        $ 2,555.50
5021917         PISMO BEACH                CA           93449          SFD           7.000         6.500        $ 2,368.48
5021945         NEWPORT BEACH              CA           92660          SFD           6.875         6.500        $ 4,247.05
5021946         COTO DE CAZA AREA          CA           92679          SFD           7.250         6.500        $ 1,991.96
5021977         COVINA                     CA           91724          SFD           7.250         6.500        $ 2,094.29
5022155         POMONA                     CA           91768          SFD           7.375         6.500        $ 1,785.40
5022188         SUNNYVALE                  CA           94087          SFD           7.250         6.500        $ 2,728.71
5023087         LAGUNA NIGUEL              CA           92677          SFD           7.375         6.500        $ 2,141.10
5023762         SAN FRANCISCO              CA           94133          LCO           7.000         6.500        $ 3,276.62
5023975         SUNNYVALE                  CA           94087          SFD           7.375         6.500        $ 2,016.78
5024006         CYPRESS                    CA           90630          SFD           6.875         6.500        $ 1,826.27
5024033         RANCHO PALOS VERDE         CA           90275          SFD           7.250         6.500        $ 2,124.98
5024540         AUSTIN                     TX           78746          LCO           7.250         6.500        $ 2,128.39
5024853         LOS ANGELES                CA           90293          SFD           7.250         6.500        $ 3,199.41
5024922         REDWOOD CITY               CA           94061          SFD           7.250         6.500        $ 1,691.80
5025006         SANTA CRUZ                 CA           95062          SFD           7.125         6.500        $ 2,358.02
5026123         SAN JOSE                   CA           95130          SFD           7.875         6.500        $ 2,049.05
5026912         RANCHO CUCAMONGA           CA           91737          SFD           7.125         6.500        $ 1,940.31
5029303         MANHASSET                  NY           11030          SFD           7.375         6.500        $ 3,108.04
5029430         SAN DIEGO                  CA           92130          SFD           7.375         6.500        $ 3,543.16
5029493         WALNUT                     CA           91789          SFD           7.500         6.500        $ 2,237.49
5029637         SAN FRANCISCO              CA           94116          SFD           7.375         6.500        $ 3,259.99
5029726         SHELBY TOWNSHIP            MI           48316          SFD           7.750         6.500         $ 823.88
5029838         REDMOND                    WA           98053          SFD           7.375         6.500        $ 4,405.47
5029857         STUDIO CITY                CA           91604          SFD           7.375         6.500        $ 1,705.97
6767563         GYPSUM                     CO           81637          SFD           7.250         6.500        $ 1,534.90
6815115         SIOUX CITY                 IA           51106          SFD           7.375         6.500        $ 1,705.97
6827394         MONTROSE                   CO           81401          SFD           7.375         6.500        $ 2,127.28
6827558         SUGARLAND                  TX           77479          SFD           7.125         6.500        $ 4,197.27
6875335         CHARLOTTE                  NC           28211          SFD           6.750         6.483        $ 2,678.71
6878689         LINDON                     UT           84042          SFD           7.375         6.500        $ 1,954.61
6895051         BRECKENRIDGE               CO           80424          SFD           7.000         6.500        $ 3,632.55
6903437         TRABUCO CANYON             CA           92679          PUD           7.125         6.500        $ 1,718.32
6912694         SHERIDAN                   WY           82801          SFD           7.250         6.500        $ 2,660.49
6926841         NEWFIELDS                  NH           03856          SFD           7.875         6.500        $ 1,950.44
6930817         PARK CITY                  UT           84060          SFD           7.375         6.500        $ 6,216.08
6949121         BASALT                     CO           81621          SFD           7.375         6.500        $ 5,180.06
6959942         CASTLE ROCK                CO           80104          SFD           7.500         6.500        $ 2,658.41
6975468         BURIEN                     WA           98146          SFD           7.250         6.500        $ 2,674.13
6975821         TWEKSBURY TWP              NJ           07830          SFD           6.500         6.233        $ 2,022.62
7042717         WETHERSFIELD               CT           06109          SFD           7.375         6.500        $ 1,768.13
7071790         ELK GROVE                  CA           95758          SFD           7.375         6.500        $ 2,621.70
7072781         PLEASANTON                 CA           94566          SFD           6.750         6.483        $ 2,107.94
7085910         BOULDERT                   CO           80301          SFD           7.125         6.500        $ 3,934.52
7087022         CASTLE ROCK                CO           80104          SFD           7.125         6.500        $ 2,587.08
7092218         SHREWSBURY                 MA           01545          SFD           7.250         6.500        $ 1,987.73
7094563         LANDENBURG                 PA           19350          SFD           7.000         6.500        $ 3,326.51
7102093         BRYN MAWR                  PA           19010          SFD           6.625         6.358        $ 5,029.00
7104385         WINTER PARK                FL           32789          SFD           7.375         6.500        $ 1,761.22
7106073         CHANDLER                   AZ           85224          SFD           7.375         6.500        $ 2,491.27
7109006         ALBUQUERQUE                NM           87107          SFD           6.750         6.483        $ 2,918.69
7119959         LAGUNA NIGUEL              CA           92677          SFD           6.500         6.233        $ 5,372.58
7129734         BARRINGTON                 IL           60010          SFD           7.375         6.500        $ 3,246.17
7137758         WEST DES MOINES            IA           50266          SFD           7.125         6.500        $ 1,751.67
7143190         SAN DIEGO                  CA           92121          SFD           6.750         6.483        $ 2,059.95
7145467         VALENCIA                   CA           91354          LCO           7.500         6.500        $ 1,194.83
7145880         COROLLA                    NC           27927          SFD           7.375         6.500        $ 2,579.03
7154026         CHESTERFIELD               MO           63005          SFD           7.125         6.500        $ 2,021.16
7201311         GERMANTOWN                 MD           20876          SFD           7.250         6.500        $ 1,729.32
7207800         CHESTERFIELD               VA           23838          SFD           6.875         6.500        $ 3,626.25
7209152         ANAHEIM                    CA           92807          SFD           6.750         6.483        $ 5,902.24
7213715         HOUSTON                    TX           77005          SFD           7.000         6.500        $ 2,277.33
7238066         LA HABRA                   CA           90631          SFD           7.125         6.500        $ 2,684.09
7238225         DENVER                     CO           80220          SFD           7.125         6.500        $ 2,061.24
7281478         NORTH WALES                PA           19454          SFD           7.875         6.500        $ 2,175.21
7282267         PACIFICA                   CA           94044          SFD           7.125         6.500        $ 2,260.48
7282340         LEESBURG                   VA           20175          SFD           6.625         6.358        $ 2,068.52
7292381         SIOUX FALLS                SD           57103          SFD           7.000         6.500        $ 1,649.95
7295870         KENNEBUNKPORT              ME           04046          SFD           7.500         6.500        $ 2,127.01
7311376         SAN DIEGO                  CA           92121          SFD           6.875         6.500        $ 1,832.83
7316938         SAN RAFAEL                 CA           94901          SFD           7.375         6.500        $ 2,486.43
7324996         MARION                     IA           52302          SFD           6.875         6.500        $ 2,494.69
7338836         SAN DIEGO                  CA           92127          SFD           7.000         6.500        $ 1,749.75
7341951         VALENCIA                   CA           91354          PUD           7.250         6.500        $ 2,386.04
7345759         EDEN PRAIRIE               MN           55346          SFD           7.125         6.500        $ 2,088.53
7357937         HERNDON                    VA           20171          SFD           6.500         6.233        $ 1,790.02
7373468         SAN DIEGO                  CA           92130          SFD           7.125         6.500        $ 2,920.57
7381260         CALABASAS                  CA           91302          SFD           6.875         6.500        $ 4,598.50
7386416         CARLSBAD                   CA           92009          SFD           7.250         6.500        $ 1,732.73
7390679         GILROY                     CA           95020          SFD           7.375         6.500        $ 2,484.50
7393592         PARADISE VALLEY            AZ           85253          SFD           7.625         6.500        $ 5,322.61
7396835         LOS ANGELES                CA           90077          SFD           7.500         6.500        $ 2,209.52
7407434         MILLERSVILLE               MD           21108          SFD           7.375         6.500        $ 2,344.15
7409701         AMES                       IA           50014          SFD           7.500         6.500        $ 2,517.17
7411417         CARLSBAD                   CA           92009          LCO           7.375         6.500        $ 1,899.70
7411587         LYME CENTER                NH           03769          SFD           7.125         6.500        $ 1,940.31
7418353         LEESBURG                   VA           20175          SFD           7.000         6.500        $ 1,640.97
7425142         OAK PARK                   CA           91301          SFD           7.125         6.500        $ 3,874.89
7431602         POTOMAC                    MD           20854          SFD           6.750         6.483        $ 3,009.03
7440757         PHOENIX                    AZ           85027          SFD           7.250         6.500        $ 1,801.29
7447268         CAMBRIA                    CA           93428          SFD           7.000         6.500        $ 4,237.98
7454292         BOWIE                      MD           20715          SFD           7.500         6.500        $ 1,759.28
7460363         WEST LINN                  OR           97068          SFD           6.500         6.233        $ 2,381.63
7476110         ASPEN                      CO           81611          SFD           7.125         6.500        $ 3,233.85
7481387         CARLSBAD                   CA           92009          SFD           7.125         6.500        $ 2,046.10
7483764         BORING                     OR           97009          SFD           7.625         6.500        $ 1,875.65
7485252         VIENNA                     VA           22181          SFD           6.500         6.233        $ 2,882.23
7487340         ROCKVILLE                  MD           20850          SFD           7.000         6.500        $ 3,379.74
7490582         RESTON                     VA           20194          SFD           6.750         6.483        $ 2,122.21
7503036         WOODBURY                   MN           55125          SFD           7.125         6.500        $ 2,673.32
7510337         SANTA CLARA                CA           95054          SFD           7.875         6.500        $ 2,128.14
7513065         CASTAIC AREA               CA           91384          SFD           7.500         6.500        $ 1,833.69
7514482         MISSION VIEJO              CA           92692          SFD           7.375         6.500        $ 2,336.55
7515478         MISSION VIEJO              CA           92692          SFD           7.125         6.500        $ 2,490.74
7519437         MISSION VIEJO              CA           92692          SFD           7.250         6.500        $ 2,355.21
7520403         ASPEN                      CO           81611          LCO           7.500         6.500        $ 2,517.17
7522203         FRESNO                     CA           93720          SFD           7.250         6.500        $ 1,688.39
7529861         SAN JOSE                   CA           95111          SFD           7.375         6.500        $ 1,788.85
7531174         LAGUNA NIGUEL              CA           92677          SFD           7.375         6.500        $ 5,166.25
7532093         OAK PARK                   CA           91301          SFD           7.250         6.500        $ 3,545.61
7534585         EL CERRITO                 CA           94530          SFD           7.625         6.500        $ 1,902.55
7538809         WEST BABYLON               NY           11704          SFD           7.250         6.500        $ 1,662.80
7540152         COLLIERVILLE               TN           38017          SFD           7.375         6.500        $ 1,932.68
7541255         COLBERT                    WA           99005          SFD           7.250         6.500        $ 1,801.63
7541521         LONGMONT                   CO           80503          SFD           7.250         6.500        $ 2,449.01
7543248         SAN FRANCISCO              CA           94110          MF2           7.250         6.500        $ 2,564.98
7544344         ENGLEWOOD CLIFFS           NJ           07631          SFD           7.000         6.500        $ 2,993.86
7549141         TUCSON                     AZ           85739          SFD           7.125         6.500        $ 1,882.71
7550906         LAGUNA NIGUEL              CA           92677          SFD           6.875         6.500        $ 1,678.45
7552774         BRISBANE                   CA           94005          LCO           6.875         6.500        $ 2,580.42
7557547         SAN DIEGO                  CA           92122          SFD           7.250         6.500        $ 2,592.27
7558679         SANTA CLARA                CA           95054          SFD           7.375         6.500        $ 2,526.88
7558682         SANTA CLARA                CA           95054          SFD           7.375         6.500        $ 1,988.87
7562947         REDWOOD CITY               CA           94065          SFD           7.000         6.500        $ 2,162.23
7563802         CHULA VISTA                CA           91915          SFD           7.500         6.500        $ 1,974.23
7565087         MORGAN HILL                CA           95037          SFD           7.000         6.500        $ 3,326.51
7565309         CORDOVA                    TN           38018          SFD           6.875         6.500        $ 3,521.14
7566700         CAMARILLO                  CA           93012          SFD           6.875         6.500        $ 2,058.49
7567047         EDEN PRAIRIE               MN           55346          SFD           7.250         6.500        $ 1,899.18
7572109         AUSTIN                     TX           78733          SFD           7.000         6.500        $ 2,203.15
7576737         ASPEN                      CO           81611          LCO           7.375         6.500        $ 2,320.67
7581186         LOUISVILLE                 KY           40241          SFD           7.250         6.500        $ 1,910.09
7581545         SEAL BEACH                 CA           90743          PUD           6.875         6.500        $ 5,583.89
7583086         LAYTONSVILLE               MD           20882          SFD           7.250         6.500        $ 1,964.67
7585296         SAN DIEGO                  CA           92131          SFD           7.375         6.500        $ 2,141.09
7586697         HINSDALE                   IL           60521          SFD           7.375         6.500        $ 2,210.16
7587338         DANVILLE                   CA           94526          SFD           7.000         6.500        $ 2,328.56
7587907         CHAPEL HILL                NC           27514          SFD           7.250         6.500        $ 2,046.53
7588919         ARLINGTON                  VA           22201          SFD           7.500         6.500        $ 2,281.19
7590465         KEY WEST                   FL           33040          SFD           7.000         6.500        $ 2,062.44
7590565         SAN DIEGO                  CA           92115          SFD           7.000         6.500        $ 1,886.13
7593659         SAN DIEGO                  CA           92130          SFD           7.375         6.500        $ 2,797.23
7594629         DEL MAR                    CA           92014          SFD           7.000         6.500        $ 4,723.65
7596148         FLOSSMOOR                  IL           60422          SFD           7.875         6.500        $ 1,894.24
7598215         IRVINE                     CA           92612          LCO           6.875         6.500        $ 1,767.14
7599638         LITTLETON                  CO           80128          SFD           6.750         6.483        $ 2,270.09
7600453         ATLANTA                    GA           30327          SFD           6.750         6.483        $ 2,837.62
7600690         MONTGOMERY                 NJ           08502          SFD           7.250         6.500        $ 1,773.66
7601146         SAN DIEGO                  CA           92121          SFD           6.875         6.500        $ 1,875.53
7601660         SAN DIEGO                  CA           92130          SFD           6.875         6.500        $ 3,674.20
7601771         APTOS                      CA           95003          SFD           7.250         6.500        $ 2,862.60
7602482         PHOENIX                    AZ           85023          SFD           6.875         6.500        $ 1,970.79
7602562         MERCER ISLAND              WA           98040          SFD           6.500         6.233        $ 3,792.41
7603306         SAN JOSE                   CA           95118          SFD           7.500         6.500        $ 1,873.89
7603439         BOW MAR                    CO           80123          SFD           6.500         6.233        $ 2,054.22
7603616         ALISO VIEJO AREA           CA           92656          LCO           7.500         6.500        $ 2,010.59
7604148         KANEOHE                    HI           96744          SFD           7.125         6.500        $ 2,533.18
7604308         LAGUNA BEACH               CA           92651          SFD           7.000         6.500        $ 1,896.11
7604310         INDIAN WELLS               CA           92210          PUD           7.375         6.500        $ 2,331.03
7605270         SHORT HILLS                NJ           07078          SFD           7.000         6.500        $ 2,868.78
7605320         TAMPA                      FL           33609          SFD           7.000         6.500        $ 1,862.85
7606099         FAIR OAKS                  CA           95628          SFD           7.375         6.500        $ 2,313.76
7606492         BARRINGTON                 IL           60010          SFD           7.250         6.500        $ 2,169.32
7607922         SHOREWOOD                  MN           55331          SFD           7.000         6.500        $ 2,583.04
7608710         NEWPORT COAST              CA           92657          SFD           6.875         6.500        $ 3,375.30
7608725         DANVILLE                   IN           46122          SFD           7.375         6.500        $ 1,933.89
7609104         RICHBORO                   PA           18954          SFD           7.375         6.500        $ 2,043.71
7609290         HOLMDEL                    NJ           07733          LCO           7.125         6.500        $ 2,762.25
7609866         FOXFIELD                   CO           80016          SFD           6.750         6.483        $ 3,405.14
7609961         OAKTON                     VA           22124          PUD           6.500         6.233        $ 1,762.52
7610060         CARLSBAD                   CA           92009          SFD           6.625         6.358        $ 1,920.93
7610071         REDLANDS                   CA           92373          SFD           7.375         6.500        $ 2,748.83
7610506         CHATHAM                    NJ           07928          SFD           7.250         6.500        $ 2,899.25
7611115         PHOENIXVILLE               PA           19460          SFD           7.250         6.500        $ 2,124.09
7611231         BAKERSFIELD                CA           93312          SFD           7.250         6.500        $ 1,884.85
7611267         IRVINE                     CA           92620          SFD           7.125         6.500        $ 1,711.24
7612042         LAGUNA NIGUEL              CA           92677          SFD           7.875         6.500        $ 2,806.02
7612097         ROCKLIN                    CA           95765          SFD           7.000         6.500        $ 2,148.93
7612156         CHANDLER                   AZ           85224          SFD           7.125         6.500        $ 1,991.12
7612689         VISALIA                    CA           93291          SFD           6.875         6.500        $ 4,124.86
7613327         WARREN TOWNSHIP            NJ           07069          SFD           6.750         6.483        $ 2,801.94
7613815         CLAYTON                    CA           94517          SFD           6.750         6.483        $ 1,709.06
7614844         GREAT FALLS                VA           22066          SFD           6.750         6.483        $ 2,931.66
7615530         BENICIA                    CA           94510          SFD           6.500         6.233        $ 1,738.19
7616241         SAN JOSE                   CA           95136          SFD           7.625         6.500        $ 2,123.38
7616591         NEWPORT                    CA           92660          LCO           6.875         6.500        $ 3,284.64
7617473         PIEDMONT                   CA           94611          SFD           6.500         6.233        $ 1,896.20
7617525         LITTLETON                  CO           80123          SFD           7.500         6.500        $ 2,971.66
7617531         WHITTIER                   CA           90603          SFD           7.625         6.500        $ 2,831.17
7617694         LOS ANGELES                CA           90292          LCO           7.250         6.500        $ 5,184.54
7617717         DARIEN                     CT           06820          SFD           7.000         6.500        $ 2,501.54
7618385         ALBUQUERQUE                NM           87111          SFD           6.750         6.483        $ 2,587.91
7618858         UNION CITY                 CA           94587          SFD           7.000         6.500        $ 2,130.64
7619538         MILPITAS                   CA           95035          SFD           7.250         6.500        $ 2,395.76
7620105         FAIRFIELD                  CT           06490          SFD           6.875         6.500        $ 4,237.19
7620989         WILMINGTON                 NC           28405          SFD           6.875         6.500        $ 2,496.33
7621188         SAN RAMON                  CA           94583          LCO           7.375         6.500        $ 1,899.01
7622210         PRINCETON                  NJ           08540          SFD           7.250         6.500        $ 3,069.79
7622516         GOLD RIVER                 CA           95670          SFD           7.250         6.500        $ 2,110.46
7622569         ATLANTA                    GA           30306          SFD           7.000         6.500        $ 1,795.65
7623059         AVALON                     NJ           08202          LCO           7.250         6.500        $ 1,828.23
7624338         SHERWOOD                   OR           97140          SFD           6.875         6.500        $ 1,944.51
7624389         HERNDON                    VA           20171          SFD           7.125         6.500        $ 1,960.86
7624978         POOLESVILLE                MD           20837          SFD           6.875         6.500        $ 1,805.24
7624994         ATLANTA                    GA           30327          SFD           6.625         6.358        $ 4,162.02
7625143         UKIAH                      CA           95482          SFD           7.375         6.500        $ 1,942.52
7625657         FAYETTEVILLE               GA           30215          SFD           7.250         6.500        $ 1,790.71
7626750         SUPERIOR                   CO           80027          SFD           6.750         6.483        $ 1,893.91
7626776         MANHATTAN BEACH            CA           90266          SFD           7.500         6.500        $ 6,992.15
7627003         EAU CLAIRE                 WI           54701          SFD           7.500         6.500        $ 3,915.60
7627249         RENO                       NV           89509          SFD           7.250         6.500        $ 1,945.57
7627859         LAS VEGAS                  NV           89134          PUD           7.125         6.500        $ 2,015.77
7627982         CAMBRIDGE                  MA           02138          LCO           6.875         6.500        $ 2,135.02
7629825         EASTHAM                    MA           02642          SFD           7.625         6.500        $ 2,255.03
7630059         RICHMOND                   VA           23233          SFD           7.375         6.500        $ 1,771.58
7630079         LOS ALTOS HILLS            CA           94022          SFD           7.250         6.500        $ 3,353.58
7630396         CHAPEL HILL                NC           27516          SFD           7.000         6.500        $ 2,049.13
7631062         SAN DIEGO                  CA           92131          SFD           7.125         6.500        $ 2,593.82
7631065         OCEAN CITY                 NJ           08226          LCO           7.625         6.500        $ 3,057.67
7631362         CARMEL                     CA           93923          SFD           7.125         6.500        $ 2,499.50
7631508         WALNUT CREEK               CA           94596          SFD           6.875         6.500        $ 2,470.05
7633253         SAN RAMON                  CA           94583          SFD           7.625         6.500        $ 2,165.85
7633818         BROOKFIELD                 WI           53045          SFD           7.375         6.500        $ 2,580.36
7635532         DALY CITY                  CA           94015          SFD           7.125         6.500        $ 2,038.00
7635743         SANTA CRUZ                 CA           95060          SFD           7.375         6.500        $ 3,309.72
7636032         EDINA                      MN           55439          SFD           7.125         6.500        $ 4,042.31
7636106         SAN DIEGO                  CA           92110          SFD           7.125         6.500        $ 1,778.62
7636812         SAN JOSE                   CA           95124          SFD           7.000         6.500        $ 2,847.49
7636819         BAINBRIDGE ISLAND          WA           98110          SFD           6.625         6.358        $ 2,878.84
7638199         DUNWOODY                   GA           30338          SFD           7.125         6.500        $ 2,610.66
7638305         ISSAQUAH                   WA           98027          SFD           7.500         6.500        $ 4,544.89
7639435         ROSWELL                    GA           30076          SFD           7.000         6.500        $ 2,015.60
7640138         PORTLAND                   OR           97229          SFD           7.000         6.500        $ 2,162.23
7640353         NASHVILLE                  TN           37215          SFD           7.250         6.500        $ 1,920.45
7641317         BULLHEAD CITY              AZ           86442          SFD           7.375         6.500        $ 2,438.08
7641987         REDMOND                    WA           98052          SFD           7.250         6.500        $ 2,332.74
7642214         BERKELEY                   CA           94708          SFD           7.250         6.500        $ 2,728.71
7642266         NORTH WALES                PA           19454          SFD           6.500         6.233        $ 1,744.51
7642391         PORT JEFFERSON             NY           11777          LCO           7.250         6.500        $ 1,821.41
7642577         SONOMA                     CA           95476          SFD           7.250         6.500        $ 2,292.11
7643086         BOWIE                      MD           20721          SFD           7.375         6.500        $ 2,707.45
7643202         KIOWA                      CO           80117          SFD           6.625         6.358        $ 2,241.09
7643525         CASWELL BEACH              NC           28461          SFD           7.125         6.500        $ 2,189.59
7643582         BURBANK                    CA           91506          SFD           6.750         6.483        $ 1,764.19
7643621         HOUSTON                    TX           77005          SFD           7.000         6.500        $ 2,059.94
7643870         SNOWMASS VILLAGE           CO           81615          LCO           7.125         6.500        $ 4,716.03
7645092         MILPITAS                   CA           95035          LCO           7.625         6.500         $ 707.79
7645401         HICKORY                    NC           28601          SFD           7.250         6.500        $ 2,161.68
7645470         TRUCKEE                    CA           96161          SFD           7.375         6.500        $ 3,867.78
7645629         APTOS                      CA           95003          SFD           7.250         6.500        $ 3,001.58
7645780         SHINGLE SPRINGS            CA           95682          SFD           6.875         6.500        $ 2,286.11
7645885         SACRAMENTO                 CA           95818          SFD           7.375         6.500        $ 2,486.43
7646039         BETHESDA                   MD           20816          SFD           7.250         6.500        $ 2,109.30
7646115         BILLINGS                   MT           59106          SFD           6.875         6.500        $ 1,970.79
7646136         LONGWOOD                   FL           32779          SFD           7.125         6.500        $ 2,364.75
7646214         REDMOND                    WA           98052          SFD           7.375         6.500        $ 2,362.11
7647125         HERNDON                    VA           20170          SFD           6.625         6.358        $ 1,879.95
7647738         NEW BERLIN                 WI           53151          SFD           7.000         6.500        $ 2,208.80
7648089         OXNARD                     CA           93035          SFD           7.000         6.500        $ 3,166.84
7648490         GOSHON                     CT           06756          SFD           7.875         6.500         $ 688.82
7648928         WOODSIDE                   NY           11377          MF2           7.250         6.500        $ 2,148.86
7649097         GIG HARBOR                 WA           98332          SFD           7.125         6.500        $ 2,358.01
7650048         TWP OF MONTCLAIR           NJ           07043          SFD           7.500         6.500        $ 2,643.03
7650626         TRABUCO CANYON             CA           92679          SFD           6.625         6.358        $ 2,340.34
7650676         SAN MARCOS                 CA           92069          SFD           7.125         6.500        $ 1,854.07
7650878         LAGUNA NIGUEL              CA           92677          SFD           7.250         6.500        $ 6,446.57
7651490         WELLINGTON                 FL           33414          SFD           7.000         6.500        $ 1,880.14
7652033         ROCHESTER HILLS            MI           48306          SFD           7.375         6.500        $ 1,795.06
7652649         WILLITS                    CA           95490          SFD           7.750         6.500        $ 2,020.28
7653101         LAS VEGAS                  NV           89128          SFD           7.375         6.500        $ 3,460.28
7654221         PORTLAND                   OR           97229          PUD           7.000         6.500        $ 2,155.58
7654230         OAKTON                     VA           22124          PUD           6.750         6.483        $ 1,797.59
7654645         HOUSTON                    TX           77006          SFD           7.125         6.500        $ 3,368.59
7655486         SAN JOSE                   CA           95130          SFD           7.625         6.500        $ 2,264.94
7656944         RANCHO CUCAMONGA           CA           91701          SFD           7.125         6.500        $ 1,145.32
7658370         LAKE FOREST                CA           92630          SFD           7.000         6.500        $ 1,751.08
7659192         WASHINGTON                 DC           20002          SFD           7.375         6.500        $ 1,738.77
7659742         SAN JOSE                   CA           95123          SFD           7.500         6.500        $ 1,843.48
7660747         SAN FRANCISCO              CA           94103          LCO           7.500         6.500        $ 2,433.27
7660901         SAN JOSE                   CA           95126          PUD           7.000         6.500        $ 2,294.63
7662354         SAN JOSE                   CA           95129          SFD           6.875         6.500        $ 1,740.86
7662567         MAMMOTH LAKES              CA           93546          SFD           7.250         6.500        $ 2,564.98
7662907         TEMECULA                   CA           92591          SFD           7.375         6.500        $ 4,365.07
7663342         RANCHO CUCAMONGA           CA           91739          SFD           7.250         6.500        $ 1,696.22
7663405         DUNSTABLE                  MA           01827          SFD           8.000         6.500        $ 2,167.91
7663502         PARK CITY                  UT           84060          SFD           7.000         6.500        $ 2,821.88
7664855         VIRGINIA BEACH             VA           23451          SFD           7.250         6.500        $ 1,846.99
7664926         SAN DIEGO                  CA           92130          PUD           7.000         6.500        $ 2,529.81
7664940         EL CAJON                   CA           92019          SFD           7.625         6.500        $ 1,769.48
7665187         LOS ANGELES                CA           91304          SFD           7.500         6.500        $ 2,187.14
7665781         DEL MAR                    CA           92014          LCO           7.375         6.500        $ 3,626.04
7666137         PRINCEVILLE                HI           96722          SFD           7.125         6.500        $ 4,193.90
7666362         FOLSOM                     CA           95630          SFD           7.000         6.500        $ 2,315.25
7667002         MINNEAPOLIS                MN           55403          SFD           7.250         6.500        $ 1,735.46
7667912         LA MESA                    CA           91941          SFD           7.500         6.500        $ 3,104.51
7668808         LIBERTYVILLE               IL           60048          SFD           7.000         6.500        $ 2,694.48
7668880         BASALT                     CO           81621          SFD           7.250         6.500        $ 2,684.36
7669553         ANAHEIM                    CA           92807          SFD           7.250         6.500        $ 3,069.79
7670068         POWAY                      CA           92064          SFD           7.000         6.500        $ 3,426.31
7670246         NEWTON                     MA           02459          SFD           7.375         6.500        $ 3,702.02
7670611         SAN JOSE                   CA           95118          SFD           7.500         6.500        $ 1,872.50
7672173         BYRON                      CA           94514          SFD           7.250         6.500        $ 1,773.66
7672227         FORT COLLINS               CO           80525          SFD           7.000         6.500        $ 2,661.21
7672491         ELK GROVE                  CA           95758          SFD           7.500         6.500        $ 2,097.64
7672743         LAFAYETTE                  CA           94549          SFD           7.375         6.500        $ 2,306.85
7673403         PARK CITY                  UT           84060          LCO           7.250         6.500        $ 2,455.83
7674057         WALNUT CREEK               CA           94596          SFD           7.000         6.500        $ 1,696.52
7674612         GLENDORA                   CA           91741          SFD           7.500         6.500        $ 1,706.08
7675075         LAGUNA HILLS               CA           92653          SFD           7.250         6.500        $ 2,728.71
7675195         LAKESIDE PARK              KY           41017          SFD           7.250         6.500        $ 2,360.33
7676125         HIGHLANDS RANCH            CO           80126          SFD           7.250         6.500        $ 1,800.95
7676569         SAN JOSE                   CA           95128          SFD           7.125         6.500        $ 2,075.05
7677332         NORTH OAKS                 MN           55127          SFD           7.125         6.500        $ 1,759.55
7677796         SAN JOSE                   CA           95120          SFD           7.250         6.500        $ 2,865.14
7677932         SAN DIEGO                  CA           92130          SFD           6.875         6.500        $ 3,118.77
7678227         OCEAN CITY                 NJ           08226          LCO           7.500         6.500        $ 2,618.56
7678300         ENCINITAS                  CA           92024          SFD           7.250         6.500        $ 1,918.62
7678557         MIDDLETOWN                 NJ           07748          SFD           7.500         6.500        $ 2,372.43
7680524         PASADENA                   CA           91106          SFD           7.250         6.500        $ 3,479.10
7681424         CHARLOTTE                  NC           28277          SFD           7.000         6.500        $ 1,729.79
7682626         SAUSALITO                  CA           94965          SFD           7.375         6.500        $ 2,196.35
7682786         CHULA VISTA                CA           91915          SFD           7.250         6.500        $ 1,778.43
7683093         ANAHEIM                    CA           92808          SFD           6.875         6.500        $ 1,839.40
7683561         ORANGE                     CA           92867          SFD           6.750         6.483        $ 1,757.70
7683867         FORT LEE                   NJ           07024          HCO           7.625         6.500        $ 1,787.18
7684885         SNOWMASS VILLAGE           CO           81615          LCO           7.375         6.500        $ 2,296.49
7685312         MCMINNVILLE                OR           97128          SFD           7.250         6.500        $ 2,030.84
7685379         OAKLAND                    CA           94602          SFD           7.250         6.500        $ 1,762.74
7685459         SEATTLE                    WA           98112          SFD           6.875         6.500        $ 2,299.25
7685521         ALAMO                      CA           94507          SFD           7.250         6.500        $ 3,301.73
7685758         LITTLETON                  CO           80123          SFD           7.250         6.500        $ 1,794.12
7686093         MCHENRY                    MD           21541          SFD           7.250         6.500        $ 1,940.11
7686429         SAN JUAN CAPISTRA          CA           92675          SFD           7.000         6.500        $ 3,792.22
7686848         MONMOUTH                   NJ           07750          SFD           6.625         6.358        $ 2,021.46
7686932         PLEASANT HILL              CA           94523          PUD           7.000         6.500        $ 1,751.41
7687109         CANTON                     MA           02021          SFD           7.375         6.500        $ 3,305.18
7687288         SNOWMASS                   CO           81654          SFD           7.250         6.500        $ 1,739.55
7687653         PARK CITY                  UT           84060          SFD           7.500         6.500        $ 3,188.42
7687947         SAN DIEGO                  CA           92109          SFD           7.375         6.500        $ 1,809.57
7688036         LOMITA                     CA           90717          SFD           7.250         6.500        $ 2,285.29
7688201         INDIANAPOLIS               IN           46256          SFD           7.500         6.500        $ 2,377.33
7688429         POTOMAC                    MD           20854          SFD           7.125         6.500        $ 3,301.22
7688651         SUNDANCE                   UT           84604          LCO           7.250         6.500        $ 1,364.35
7689837         PARADISE VALLEY            AZ           85253          SFD           7.375         6.500        $ 3,910.95
7692000         MIDWAY                     UT           84049          SFD           7.125         6.500        $ 2,021.16
7692088         TUXEDO                     NY           10987          SFD           7.250         6.500        $ 2,646.84
7693377         FRESNO                     CA           93720          PUD           7.375         6.500        $ 2,072.03
7693758         MANHATTAN BEACH            CA           90266          SFD           7.500         6.500        $ 6,992.15
7696268         GOLDEN                     CO           80401          SFD           7.375         6.500        $ 1,823.38
7696727         FAIRFAX STATION            VA           22039          SFD           6.500         6.233        $ 2,275.44
7697333         BASALT                     CO           81621          SFD           7.375         6.500        $ 2,201.53
7698322         ENUMCLAW                   WA           98022          SFD           7.250         6.500        $ 1,780.14
7700422         PITTSBURGH                 PA           15217          SFD           7.250         6.500        $ 1,944.20
7700642         ORINDA                     CA           94563          SFD           7.000         6.500        $ 2,860.80
7701692         PARK CITY                  UT           84060          SFD           7.500         6.500        $ 2,461.24
7705253         CHICAGO                    IL           60646          SFD           7.000         6.500        $ 2,474.93
7706565         ALISO VIEJO                CA           92565          LCO           7.500         6.500        $ 1,716.57
7708843         PRESCOTT                   AZ           86303          SFD           7.375         6.500        $ 3,784.90
7709809         CAMPBELL                   CA           95008          SFD           6.875         6.500        $ 1,734.29
7711001         SAN FRANCISCO              CA           94117          SFD           7.125         6.500        $ 2,802.67
7711082         PLEASANT GROVE             UT           84062          SFD           7.500         6.500         $ 513.92
7711408         SOLANA BEACH               CA           92075          SFD           7.125         6.500        $ 2,526.44
7712371         ALPHARETTA                 GA           30202          SFD           6.875         6.500        $ 2,299.25
7715861         MERCER ISLAND              WA           98040          SFD           7.125         6.500        $ 2,290.64
7719935         SAN JOSE                   CA           95125          SFD           7.125         6.500        $ 2,054.84
7720908         LOS ANGELES                CA           91602          SFD           7.375         6.500        $ 2,072.03
7724459         GOLDEN VALLEY              MN           55422          SFD           7.000         6.500        $ 1,809.62
7726305         LA CRESCENTA               CA           91214          SFD           7.750         6.500         $ 913.71

</TABLE>



<PAGE>
<TABLE>
NASCOR
NMI / 1999-16  Exhibit F-2
30 YEAR FIXED RATE NON RELOCATION  LOANS

(continued)

<CAPTION>




(i)           (vii)         (viii)         (ix)           (x)           (xi)          (xii)         (xiii)         (xIv)
- -----       --------      ----------   --------------    ------       ---------     ----------     --------     -----------
                                          CUT-OFF
MORTGAGE    ORIGINAL      SCHEDULED        DATE                                      MORTGAGE                     T.O.P.
LOAN         TERM TO       MATURITY      PRINCIPAL                                  INSURANCE       SERVICE      MORTGAGE
NUMBER      MATURITY         DATE         BALANCE         LTV          SUBSIDY         CODE           FEE          LOAN
- --------    --------     -----------   --------------    ------       ---------     ----------     --------     -----------
<S>            <C>       <C>           <C>              <C>          <C>             <C>            <C>          <C>
4699654        360 8       1-May-29 8    $ 295,200.00     80.00                                       0.250
4716112        360 8       1-Mar-29 8    $ 351,462.67     80.00                                       0.250
4765675        360 5       1-Mar-29 5    $ 349,504.34     71.43                                       0.250
4818663        360 9       1-Apr-29 9    $ 274,751.39     77.91                                       0.250
4826828        360 4       1-May-29 4    $ 260,900.00     93.20                          17           0.250
4826909        360 2       1-May-29 2    $ 263,200.00     79.76                                       0.250
4830823        360 1       1-Apr-29 1    $ 296,774.00     90.00                          13           0.250
4839938        360 2       1-Apr-29 2    $ 258,897.88     79.99                                       0.250
4862615        360 3       1-Apr-29 3    $ 299,765.97     75.00                                       0.250
4865850        360 6       1-Jun-28 6    $ 257,700.27     68.42                                       0.250
4879708        360 6       1-May-29 6    $ 360,000.00     79.78                                       0.250
4883014        360 1       1-Dec-28 1    $ 251,029.33     81.29                          11           0.250
4889278        360 8       1-Oct-28 8    $ 59,649.64     54.05 4                                      0.250
4891309        360 0       1-Dec-28 0    $ 352,602.43     75.00                                       0.250
4902152        360 1       1-May-29 1    $ 425,000.00     66.41                                       0.250
4911891        360 1       1-Oct-28 1    $ 396,681.80     88.47                          01           0.250
4914886        360 7       1-May-29 7    $ 320,000.00     65.98                                       0.250
4926758        360 8       1-Feb-29 8    $ 311,582.69     90.00                                       0.250
4930049        360 6       1-May-29 6    $ 480,000.00     70.07                                       0.250
4931751        360 3       1-Apr-29 3    $ 291,793.90     77.87                                       0.250
4941578        360 5       1-May-29 5    $ 250,000.00     38.46                                       0.250
4945298        360 9       1-Jan-29 9    $ 298,983.14     75.00                                       0.250
4946637        360 3       1-Mar-29 3    $ 333,514.99     75.06                                       0.250
4947865        360 1       1-May-29 1    $ 317,500.00     84.11                          01           0.250
4951209        360 3       1-Mar-29 3    $ 300,305.44     80.00                                       0.250
4951252        360 6       1-Mar-29 6    $ 290,321.28     77.45                                       0.250
4951614        360 8       1-May-29 8    $ 251,750.00     95.00                          13           0.250
4952543        360 3       1-May-29 3    $ 377,200.00     80.00                                       0.250
4954882        360 3       1-Apr-29 3    $ 253,801.85     79.97                                       0.250
4956347        360 7       1-Feb-29 7    $ 648,431.34     36.11                                       0.250
4956630        360 1       1-Apr-29 1    $ 349,720.12     63.18                                       0.250
4958805        360 4       1-Feb-29 4    $ 286,372.26     90.00                          06           0.250
4958960        360 7       1-Jan-29 7    $ 360,432.98     80.00                                       0.250
4959853        360 7       1-Apr-29 7    $ 749,429.30     68.18                                       0.250
4960261        360 3       1-May-29 3    $ 390,000.00     52.70                                       0.250
4961404        360 3       1-May-29 3    $ 265,500.00     90.00                          13           0.250
4962294        360 7       1-Apr-29 7    $ 349,733.68     76.27                                       0.250
4962753        360 8       1-Mar-29 8    $ 259,528.63     66.07                                       0.250
4962772        360 3       1-May-29 3    $ 315,900.00     60.00                                       0.250
4962920        360 1       1-Mar-29 1    $ 349,055.50     80.00                                       0.250
4964716        360 2       1-Dec-28 2    $ 340,048.92     79.98                                       0.250
4965057        360 2       1-Apr-29 2    $ 283,783.90     74.93                                       0.250
4965176        360 5       1-May-29 5    $ 392,500.00     43.85                                       0.250
4966864        360 4       1-May-29 4    $ 268,500.00     94.88                          06           0.250
4969754        360 2       1-May-29 2    $ 494,900.00     75.00                                       0.250
4969995        360 6       1-May-29 6    $ 260,000.00     89.69                          33           0.250
4971043        360 8       1-Apr-29 8    $ 599,495.92     57.14                                       0.250
4971379        360 4       1-Apr-29 4    $ 407,631.16     62.77                                       0.250
4971757        360 7       1-May-29 7    $ 288,000.00     74.42                                       0.250
4972111        360 0       1-May-29 0    $ 250,300.00     87.82                          17           0.250
4972456        360 9       1-Jan-29 9    $ 356,781.18     84.98                          06           0.250
4972460        360 8       1-Feb-29 8    $ 287,803.75     79.99                                       0.250
4972571        360 3       1-Feb-29 3    $ 285,309.81     79.44                                       0.250
4973297        360 7       1-May-29 7    $ 375,000.00     61.48                                       0.250
4973570        360 6       1-Apr-29 6    $ 274,790.74     87.30                          06           0.250
4973794        360 9       1-May-29 9    $ 289,600.00     80.00                                       0.250
4974162        360 2       1-Apr-29 2    $ 267,780.31     72.63                                       0.250
4974292        360 3       1-Nov-28 3    $ 382,797.38     76.73                                       0.250
4974421        360 3       1-May-29 3    $ 315,000.00     70.00                                       0.250
4974446        360 3       1-Apr-29 3    $ 249,789.96     88.34                          17           0.250
4975081        360 1       1-May-29 1    $ 400,000.00     72.07                                       0.250
4975752        360 9       1-Mar-29 9    $ 289,534.80     74.12                                       0.250
4976212        360 4       1-May-29 4    $ 333,000.00     90.00                          01           0.250
4976217        360 7       1-Apr-29 7    $ 267,785.68     63.81                                       0.250
4976264        360 2       1-Apr-29 2    $ 294,769.88     69.41                                       0.250
4976354        360 0       1-May-29 0    $ 403,500.00     67.25                                       0.250
4978528        360 1       1-Apr-29 1    $ 399,687.96     68.97                                       0.250
4978826        360 7       1-Apr-29 7    $ 281,019.46     73.43                                       0.250
4979176        360 8       1-May-29 8    $ 338,000.00     42.25                                       0.250
4980418        360 7       1-Apr-29 7    $ 435,596.18     80.00                                       0.250
4980589        360 2       1-May-29 2    $ 247,500.00     75.00                                       0.250
4981144        360 1       1-May-29 1    $ 285,000.00     73.64                                       0.250
4982108        360 5       1-May-29 5    $ 316,000.00     80.00                                       0.250
4982310        360 5       1-May-29 5    $ 326,800.00     80.00                                       0.250
4982519        360 0       1-Apr-29 0    $ 280,791.45     87.81                          06           0.250
4982626        360 0       1-May-29 0    $ 330,000.00     75.00                                       0.250
4982663        360 6       1-May-29 6    $ 373,800.00     35.60                                       0.250
4982667        360 2       1-May-29 2    $ 280,500.00     85.00                          17           0.250
4982730        360 2       1-May-29 2    $ 287,600.00     76.69                                       0.250
4982800        360 4       1-May-29 4    $ 270,000.00     59.34                                       0.250
4982814        360 6       1-Apr-29 6    $ 274,768.97     68.75                                       0.250
4982950        360 6       1-May-29 6    $ 375,000.00     53.96                                       0.250
4982958        360 0       1-May-29 0    $ 385,000.00     70.00                                       0.250
4983192        360 9       1-Feb-29 9    $ 316,860.44     50.48                                       0.250
4983347        360 1       1-Apr-29 1    $ 419,664.14     75.00                                       0.250
4983855        360 7       1-Mar-29 7    $ 471,164.83     48.41                                       0.250
4983877        360 9       1-May-29 9    $ 261,250.00     95.00                          11           0.250
4984058        360 8       1-May-29 8    $ 248,000.00     49.60                                       0.250
4984215        360 6       1-Apr-29 6    $ 264,754.55     89.38                          24           0.250
4984343        360 9       1-May-29 9    $1,000,000.00    55.56                                       0.250
4984599        360 8       1-May-29 8    $ 365,000.00     73.29                                       0.250
4984627        360 9       1-May-29 9    $1,000,000.00    64.52                                       0.250
4985052        360 9       1-May-29 9    $ 252,000.00     90.00                          01           0.250
4985145        360 4       1-May-29 4    $ 244,000.00     80.00                                       0.250
4985333        360 4       1-May-29 4    $ 410,400.00     90.00                          17           0.250
4985471        360 4       1-Apr-29 4    $ 299,777.36     75.00                                       0.250
4985557        360 0       1-May-29 0    $ 259,500.00     72.08         GD 4YR                        0.250
4985916        360 1       1-May-29 1    $ 330,000.00     75.00                                       0.250
4986007        360 3       1-Apr-29 3    $ 479,643.77     80.00                                       0.250
4986463        360 0       1-May-29 0    $ 500,000.00     76.92                                       0.250
4986606        360 1       1-May-29 1    $ 283,000.00     47.56                                       0.250
4986827        360 7       1-May-29 7    $ 252,000.00     70.00                                       0.250
4986877        360 9       1-Apr-29 9    $ 649,440.36     52.00                                       0.250
4986937        360 5       1-May-29 5    $ 499,990.00     31.25                                       0.250
4987050        360 0       1-May-29 0    $ 283,600.00     75.63                                       0.250
4987192        360 9       1-May-29 9    $ 341,000.00     59.30                                       0.250
4987199        360 9       1-May-29 9    $ 550,000.00     67.48                                       0.250
4987429        360 7       1-Apr-29 7    $ 280,296.97     87.66                          06           0.250
4987569        360 1       1-May-29 1    $ 400,000.00     61.35                                       0.250
4987659        360 7       1-Apr-29 7    $ 357,054.11     90.00                          33           0.250
4987692        360 3       1-Apr-29 3    $ 254,805.96     73.70                                       0.250
4987969        360 5       1-Apr-29 5    $ 264,572.97     80.39                          11           0.250
4988033        360 8       1-May-29 8    $ 275,600.00     72.53                                       0.250
4988050        360 9       1-May-29 9    $ 476,000.00     74.96                                       0.250
4988120        360 2       1-May-29 2    $ 420,000.00     74.34                                       0.250
4988347        360 8       1-Apr-29 8    $ 283,761.40     80.00                                       0.250
4988396        360 5       1-Apr-29 5    $ 279,770.49     80.00                                       0.250
4988461        360 1       1-May-29 1    $ 354,000.00     54.88                                       0.250
4988503        360 3       1-May-29 3    $ 504,000.00     73.04                                       0.250
4988618        360 6       1-May-29 6    $ 316,000.00     52.67                                       0.250
4988778        360 7       1-Apr-29 7    $ 291,777.82     80.00                                       0.250
4989023        360 6       1-May-29 6    $ 315,000.00     70.00                                       0.250
4989283        360 1       1-May-29 1    $ 400,000.00     53.91                                       0.250
4989682        360 3       1-May-29 3    $ 383,000.00     58.92                                       0.250
4989920        360 6       1-May-29 6    $ 348,000.00     80.00                                       0.250
4990006        360 5       1-May-29 5    $ 392,000.00     80.00                                       0.250
4990766        360 8       1-May-29 8    $ 280,000.00     43.75                                       0.250
4991129        360 4       1-May-29 4    $ 498,750.00     75.00                                       0.250
4991164        360 0       1-May-29 0    $ 300,000.00     80.00                                       0.250
4991221        360 3       1-Apr-29 3    $ 314,760.31     90.00                          13           0.250
4991227        360 0       1-May-29 0    $ 280,000.00     80.00                                       0.250
4991309        360 6       1-May-29 6    $ 350,000.00     72.92                                       0.250
4991606        360 4       1-May-29 4    $ 301,000.00     70.82                                       0.250
4991631        360 5       1-Apr-29 5    $ 549,421.07     77.44                                       0.250
4991787        360 7       1-May-29 7    $ 406,500.00     77.28                                       0.250
4991930        349 7       1-May-28 7    $ 279,786.17     80.00                                       0.250
4992096        360 0       1-Apr-29 0    $ 335,731.30     80.00                                       0.250
4992302        360 8       1-May-29 8    $ 400,000.00     68.27                                       0.250
4993397        360 6       1-Apr-29 6    $ 278,143.43     84.99                          24           0.250
4993400        360 3       1-Apr-29 3    $ 299,765.97     68.97                                       0.250
4993872        360 9       1-May-29 9    $ 294,000.00     57.65                                       0.250
4994122        360 7       1-May-29 7    $ 255,600.00     78.65                                       0.250
4994152        360 0       1-May-29 0    $ 300,450.00     84.63                          33           0.250
4994159        360 4       1-May-29 4    $ 420,000.00     80.00                                       0.250
4994602        360 9       1-May-29 9    $ 375,000.00     79.80                                       0.250
4994717        360 0       1-May-29 0    $ 450,000.00     51.14                                       0.250
4994740        360 0       1-May-29 0    $ 464,000.00     80.00                                       0.250
4994842        360 3       1-Apr-29 3    $ 317,745.70     80.00                                       0.250
4995194        360 7       1-May-29 7    $ 252,000.00     90.00                          13           0.250
4995617        360 6       1-May-29 6    $ 334,450.00     61.37                                       0.250
4995735        360 6       1-May-29 6    $ 300,000.00     60.00                                       0.250
4995800        360 4       1-May-29 4    $ 650,000.00     45.14                                       0.250
4995989        360 8       1-May-29 8    $ 922,500.00     61.50                                       0.250
4996274        360 7       1-Nov-28 7    $ 332,179.40     75.00                                       0.250
4996320        360 9       1-Feb-29 9    $ 264,391.35     62.35                                       0.250
4996418        360 5       1-Jan-29 5    $ 313,633.36     71.69                                       0.250
4996516        360 2       1-Apr-29 2    $ 267,780.31     80.00                                       0.250
4996776        360 2       1-Apr-29 2    $ 349,726.96     87.50                          12           0.250
4996786        360 9       1-Apr-28 9    $ 266,107.11     80.00                                       0.250
4996842        360 0       1-Jan-29 0    $ 477,415.68     70.96                                       0.250
4996895        360 2       1-Jan-29 2    $ 269,106.95     73.97                                       0.250
4996914        360 1       1-Jan-29 1    $ 312,488.22     74.98                                       0.250
4996942        360 1       1-May-29 1    $ 296,400.00     79.97                                       0.250
4996976        360 4       1-May-29 4    $ 310,804.00     90.00                          01           0.250
4997019        351 1       1-Jun-28 1    $ 282,372.84     81.97                          06           0.250
4997057        360 3       1-May-29 3    $ 320,200.00     75.34                                       0.250
4997111        360 5       1-Apr-29 5    $ 263,794.05     69.47                                       0.250
4997162        360 5       1-Jan-29 5    $ 283,543.73     71.25                                       0.250
4997225        360 9       1-May-29 9    $ 269,600.00     79.29                                       0.250
4997867        360 8       1-May-29 8    $ 363,800.00     79.09                                       0.250
4997973        360 6       1-May-29 6    $ 327,900.00     52.05                                       0.250
4998052        360 2       1-May-29 2    $ 322,500.00     75.00                                       0.250
4998168        360 0       1-May-29 0    $ 258,500.00     64.63                                       0.250
4998309        360 2       1-Apr-29 2    $ 349,726.96     54.69                                       0.250
4998468        360 3       1-May-29 3    $ 475,000.00     69.85                                       0.250
4998493        360 9       1-May-29 9    $ 421,600.00     79.98                                       0.250
4998604        360 1       1-Apr-29 1    $ 284,766.39     67.06                                       0.250
4998632        360 4       1-May-29 4    $ 383,000.00     78.48                                       0.250
4998749        360 4       1-May-29 4    $ 268,800.00     80.00                                       0.250
4998953        360 9       1-May-29 9    $ 600,000.00     37.50                                       0.250
4999331        360 3       1-Apr-29 3    $ 322,748.03     89.99                          12           0.250
4999464        360 1       1-May-29 1    $ 254,400.00     80.00                                       0.250
5000142        360 9       1-Jan-29 9    $ 278,979.25     72.16                                       0.250
5000435        360 2       1-Mar-29 2    $ 343,376.35     80.00                                       0.250
5000449        360 5       1-May-29 5    $ 270,000.00     79.41                                       0.250
5000457        360 0       1-May-29 0    $ 255,000.00     71.83                                       0.250
5000494        360 5       1-May-29 5    $ 296,000.00     56.38                                       0.250
5000582        360 9       1-Mar-29 9    $ 284,495.71     63.33                                       0.250
5000717        360 0       1-May-29 0    $ 649,900.00     64.99                                       0.250
5001015        360 4       1-May-29 4    $ 408,000.00     80.00                                       0.250
5001025        360 5       1-May-29 5    $ 436,000.00     64.40                                       0.250
5001093        360 4       1-May-29 4    $ 432,000.00     80.00                                       0.250
5001140        360 1       1-Mar-29 1    $ 259,900.32     75.51                                       0.250
5001147        360 5       1-Mar-29 5    $ 405,180.25     74.00                                       0.250
5001166        360 7       1-May-29 7    $ 395,000.00     76.46                                       0.250
5001242        360 4       1-May-29 4    $ 367,500.00     75.00                                       0.250
5001274        360 4       1-May-29 4    $ 464,000.00     80.00                                       0.250
5001430        360 5       1-May-29 5    $ 423,650.00     67.25                                       0.250
5001505        360 7       1-May-29 7    $ 650,000.00     76.47                                       0.250
5001510        360 8       1-May-29 8    $ 456,000.00     80.00                                       0.250
5001566        360 3       1-May-29 3    $ 355,000.00     58.68                                       0.250
5001587        360 8       1-Apr-29 8    $ 279,520.69     80.00                                       0.250
5001711        360 7       1-Mar-29 7    $ 279,516.50     80.00                                       0.250
5001717        360 5       1-Feb-29 5    $ 279,307.43     72.73                                       0.250
5001861        360 4       1-May-29 4    $ 300,000.00     80.00                                       0.250
5001980        360 2       1-Mar-29 2    $ 290,970.82     79.99                                       0.250
5002018        360 3       1-Apr-29 3    $ 403,668.84     80.00                                       0.250
5002020        360 3       1-Apr-29 3    $ 537,559.00     68.97                                       0.250
5002084        360 5       1-May-29 5    $ 280,000.00     67.47                                       0.250
5002202        300 8       1-May-24 8    $ 293,000.00     34.47                                       0.250
5002451        360 9       1-May-29 9    $ 549,500.00     70.00                                       0.250
5002539        360 2       1-Mar-29 2    $ 414,048.00     74.94                                       0.250
5002545        360 2       1-May-29 2    $ 334,000.00     65.49                                       0.250
5002665        360 6       1-May-29 6    $ 275,000.00     50.00                                       0.250
5002710        360 6       1-May-29 6    $ 299,000.00     40.41                                       0.250
5002740        360 9       1-May-29 9    $ 324,000.00     90.00                          01           0.250
5002760        360 4       1-May-29 4    $ 392,000.00     70.00                                       0.250
5002788        360 3       1-Apr-29 3    $ 437,658.32     45.63                                       0.250
5002807        360 5       1-May-29 5    $ 319,200.00     80.00                                       0.250
5002899        360 4       1-May-29 4    $ 324,800.00     70.00                                       0.250
5003147        360 2       1-May-29 2    $ 400,000.00     55.17                                       0.250
5003156        360 3       1-May-29 3    $ 277,500.00     74.00                                       0.250
5003198        360 0       1-May-29 0    $ 280,000.00     70.00                                       0.250
5003392        360 4       1-May-29 4    $ 352,000.00     80.00                                       0.250
5003601        360 4       1-May-29 4    $ 328,000.00     80.00                                       0.250
5003806        360 3       1-May-29 3    $ 300,000.00     47.89                                       0.250
5003918        360 9       1-May-29 9    $ 550,000.00     66.03                                       0.250
5004035        360 0       1-May-29 0    $ 374,500.00     70.00                                       0.250
5004042        360 8       1-Mar-29 8    $ 269,577.47     63.53                                       0.250
5004138        360 6       1-May-29 6    $ 300,000.00     40.00                                       0.250
5004185        360 9       1-May-29 9    $ 812,500.00     65.00                                       0.250
5004197        360 7       1-May-29 7    $ 490,000.00     79.67                                       0.250
5004270        360 1       1-May-29 1    $ 322,000.00     53.67                                       0.250
5004350        360 7       1-Apr-29 7    $ 341,040.31     79.84                                       0.250
5004363        360 8       1-May-29 8    $ 518,000.00     78.48                                       0.250
5004370        360 0       1-May-29 0    $ 390,000.00     57.35                                       0.250
5004401        360 9       1-May-29 9    $ 268,700.00     52.17                                       0.250
5004423        360 2       1-May-29 2    $ 419,000.00     79.96                                       0.250
5004427        360 6       1-May-29 6    $ 305,000.00     67.78                                       0.250
5004529        360 3       1-May-29 3    $ 328,000.00     66.94                                       0.250
5004549        360 0       1-May-29 0    $ 557,000.00     30.94                                       0.250
5004604        360 5       1-Apr-29 5    $ 309,758.17     70.45                                       0.250
5004812        360 6       1-May-29 6    $ 291,000.00     61.91                                       0.250
5004854        360 9       1-May-29 9    $ 345,360.00     90.00                          33           0.250
5004870        360 3       1-May-29 3    $ 247,500.00     75.00                                       0.250
5004896        360 4       1-May-29 4    $ 125,000.00     58.14                                       0.250
5004909        360 4       1-May-29 4    $ 273,000.00     68.25                                       0.250
5005062        360 1       1-May-29 1    $ 632,000.00     80.00                                       0.250
5005171        360 1       1-May-29 1    $ 253,000.00     72.29                                       0.250
5005238        360 2       1-Jan-29 2    $ 255,110.86     77.58                                       0.250
5005289        360 3       1-May-29 3    $ 375,000.00     63.03                                       0.250
5005305        360 1       1-May-29 1    $ 304,500.00     89.99                          17           0.250
5005362        360 9       1-May-29 9    $ 290,000.00     52.73                                       0.250
5005369        360 7       1-May-29 7    $ 276,000.00     75.62                                       0.250
5005370        360 8       1-May-29 8    $ 329,280.00     80.00                                       0.250
5005383        360 7       1-May-29 7    $ 302,000.00     65.65                                       0.250
5005405        360 6       1-Apr-29 6    $ 350,720.54     90.00                          06           0.250
5005439        360 2       1-May-29 2    $ 261,500.00     72.04                                       0.250
5005444        360 1       1-May-29 1    $ 290,000.00     62.50                                       0.250
5005452        360 7       1-May-29 7    $ 388,000.00     74.62                                       0.250
5005460        360 9       1-May-29 9    $ 300,000.00     56.60                                       0.250
5005478        240 8       1-May-19 8    $ 301,500.00     67.00                                       0.250
5005842        360 8       1-May-29 8    $ 550,000.00     48.67                                       0.250
5005904        360 7       1-Apr-29 7    $ 259,792.08     50.00                                       0.250
5006095        360 5       1-May-29 5    $ 324,000.00     90.00                          06           0.250
5006096        360 7       1-Dec-28 7    $ 321,689.49     70.99                                       0.250
5006345        360 7       1-May-29 7    $ 536,000.00     69.61                                       0.250
5006517        360 7       1-May-29 7    $ 385,600.00     80.00                                       0.250
5006522        360 6       1-May-29 6    $ 408,000.00     80.00                                       0.250
5006829        360 2       1-May-29 2    $ 370,000.00     57.36                                       0.250
5007001        360 6       1-May-29 6    $ 376,000.00     80.00                                       0.250
5007188        360 1       1-May-29 1    $ 300,000.00     49.75                                       0.250
5007319        360 5       1-May-29 5    $ 288,000.00     76.80                                       0.250
5007358        360 2       1-Apr-29 2    $ 399,663.95     72.73                                       0.250
5007396        360 6       1-May-29 6    $ 508,000.00     80.00                                       0.250
5007397        360 0       1-May-29 0    $ 377,000.00     58.00                                       0.250
5007404        360 1       1-May-29 1    $ 296,000.00     80.00                                       0.250
5007473        360 8       1-May-29 8    $ 441,000.00     66.82                                       0.250
5007533        360 4       1-May-29 4    $ 297,000.00     66.59                                       0.250
5007553        360 7       1-May-29 7    $ 317,420.00     80.00                                       0.250
5007599        360 5       1-May-29 5    $ 270,000.00     73.97                                       0.250
5007601        360 4       1-May-29 4    $ 325,000.00     69.89                                       0.250
5007928        360 7       1-May-29 7    $ 499,920.00     80.00                                       0.250
5008016        360 1       1-May-29 1    $ 261,600.00     80.00                                       0.250
5008017        360 5       1-Mar-29 5    $ 272,572.77     78.00                                       0.250
5008167        360 8       1-May-29 8    $ 440,000.00     80.00                                       0.250
5008197        360 1       1-Apr-29 1    $ 297,262.10     70.00                                       0.250
5008278        360 6       1-May-29 6    $ 273,000.00     70.00                                       0.250
5008335        360 9       1-May-29 9    $ 270,000.00     58.70                                       0.250
5008416        360 6       1-May-29 6    $ 365,000.00     60.83                                       0.250
5008472        360 4       1-May-29 4    $ 267,650.00     89.90                          01           0.250
5008514        360 1       1-May-29 1    $ 253,000.00     65.71                                       0.250
5008546        360 4       1-May-29 4    $ 250,000.00     67.57                                       0.250
5008548        360 8       1-Apr-29 8    $ 329,742.57     58.51                                       0.250
5008638        360 7       1-Apr-29 7    $ 251,303.81     75.07                                       0.250
5008645        360 1       1-May-29 1    $ 258,950.00     63.16                                       0.250
5009028        360 1       1-May-29 1    $ 318,000.00     76.08                                       0.250
5009157        360 8       1-Apr-29 8    $ 274,785.48     68.75                                       0.250
5009160        360 9       1-May-29 9    $ 395,000.00     69.30                                       0.250
5009178        360 3       1-Apr-29 3    $ 304,262.46     84.12                          06           0.250
5009208        360 0       1-May-29 0    $ 519,000.00     69.66                                       0.250
5009312        360 7       1-Apr-29 7    $ 278,782.36     90.00                          11           0.250
5009916        360 8       1-May-29 8    $ 237,000.00     72.48                                       0.250
5010023        360 2       1-May-29 2    $ 375,500.00     79.98                                       0.250
5010030        360 8       1-May-29 8    $ 305,100.00     67.80                                       0.250
5010060        360 4       1-May-29 4    $ 440,000.00     73.95                                       0.250
5010070        360 5       1-May-29 5    $ 250,000.00     71.43                                       0.250
5010187        360 5       1-May-29 5    $ 310,000.00     68.89                                       0.250
5010247        360 7       1-May-29 7    $ 327,000.00     55.90                                       0.250
5010270        360 0       1-May-29 0    $ 281,200.00     68.59                                       0.250
5010340        240 7       1-May-19 7    $ 280,000.00     80.00                                       0.250
5010397        360 6       1-Apr-29 6    $ 294,746.02     72.68                                       0.250
5010420        360 0       1-Apr-29 0    $ 484,592.55     70.80                                       0.250
5010447        360 0       1-Apr-29 0    $ 484,592.55     59.15                                       0.250
5010472        360 9       1-May-29 9    $ 275,000.00     63.95                                       0.250
5010562        360 6       1-May-29 6    $ 300,000.00     46.51                                       0.250
5010670        360 1       1-May-29 1    $ 315,000.00     90.00                          01           0.250
5010860        360 8       1-May-29 8    $ 363,860.00     69.98                                       0.250
5010910        360 6       1-Apr-29 6    $ 539,578.74     42.69                                       0.250
5010999        360 0       1-May-29 0    $ 362,500.00     77.13                                       0.250
5011046        360 0       1-May-29 0    $ 500,000.00     51.55                                       0.250
5011247        360 4       1-Apr-29 4    $ 508,612.69     65.68                                       0.250
5011261        360 8       1-Apr-29 8    $ 329,736.10     55.74                                       0.250
5011508        360 5       1-Apr-29 5    $ 282,274.09     66.86                                       0.250
5011678        360 9       1-May-29 9    $ 312,000.00     80.00                                       0.250
5011739        360 2       1-May-29 2    $ 315,700.00     89.98                          33           0.250
5012088        360 6       1-May-29 6    $ 255,200.00     80.00                                       0.250
5012221        360 9       1-May-29 9    $ 330,500.00     77.76                                       0.250
5012327        360 8       1-May-29 8    $ 500,000.00     77.04                                       0.250
5012337        360 5       1-May-29 5    $ 400,050.00     53.92                                       0.250
5012481        360 1       1-May-29 1    $ 383,000.00     69.95                                       0.250
5012614        360 2       1-May-29 2    $ 255,000.00     60.00                                       0.250
5012691        360 2       1-May-29 2    $ 253,000.00     67.47                                       0.250
5012933        360 3       1-May-29 3    $ 275,000.00     64.94                                       0.250
5012980        360 7       1-May-29 7    $ 364,000.00     80.00                                       0.250
5012995        360 4       1-May-29 4    $ 476,000.00     80.00                                       0.250
5013096        360 4       1-May-29 4    $ 328,000.00     61.89                                       0.250
5013262        360 9       1-May-29 9    $ 270,000.00     72.97                                       0.250
5013273        360 2       1-May-29 2    $ 355,000.00     65.99                                       0.250
5013429        360 7       1-May-29 7    $ 262,755.00     90.00                          01           0.250
5013559        360 8       1-May-29 8    $ 278,200.00     79.99                                       0.250
5013599        360 2       1-May-29 2    $ 304,000.00     80.00                                       0.250
5013927        360 1       1-May-29 1    $ 307,850.00     74.36                                       0.250
5014175        360 4       1-May-29 4    $ 411,000.00     48.35                                       0.250
5014428        360 1       1-May-29 1    $ 288,000.00     80.00                                       0.250
5014450        360 8       1-May-29 8    $ 285,150.00     79.98                                       0.250
5014482        360 1       1-May-29 1    $ 331,000.00     59.11                                       0.250
5014654        360 2       1-May-29 2    $ 363,370.00     74.92                                       0.250
5014805        360 6       1-May-29 6    $ 370,000.00     61.67                                       0.250
5014892        360 2       1-May-29 2    $ 280,000.00     80.00                                       0.250
5014893        360 6       1-May-29 6    $ 277,200.00     90.00                          01           0.250
5015070        360 5       1-May-29 5    $ 324,000.00     80.00                                       0.250
5015130        360 6       1-May-29 6    $ 267,500.00     74.31                                       0.250
5015423        360 3       1-May-29 3    $ 302,000.00     54.91                                       0.250
5015574        360 9       1-May-29 9    $ 362,000.00     50.28                                       0.250
5015616        360 6       1-May-29 6    $ 397,000.00     50.25                                       0.250
5015676        360 4       1-May-29 4    $ 500,600.00     69.53                                       0.250
5015713        360 8       1-May-29 8    $ 495,000.00     46.26                                       0.250
5015749        360 0       1-May-29 0    $ 337,500.00     75.00                                       0.250
5015759        360 1       1-May-29 1    $ 290,000.00     50.88                                       0.250
5015798        360 0       1-May-29 0    $ 280,000.00     74.67                                       0.250
5015829        360 8       1-May-29 8    $ 418,000.00     39.81                                       0.250
5015880        360 0       1-Apr-29 0    $ 315,060.09     59.04                                       0.250
5015936        360 3       1-May-29 3    $ 282,750.00     75.00                                       0.250
5016039        360 0       1-May-29 0    $ 340,000.00     80.00                                       0.250
5016128        360 5       1-Apr-29 5    $ 394,010.47     80.00                                       0.250
5016224        360 2       1-May-29 2    $ 258,000.00     63.70                                       0.250
5016244        360 9       1-May-29 9    $ 475,000.00     65.07                                       0.250
5016299        360 9       1-May-29 9    $ 320,000.00     65.98                                       0.250
5016582        360 5       1-May-29 5    $ 375,000.00     67.69                                       0.250
5016638        360 8       1-May-29 8    $ 539,600.00     59.96                                       0.250
5016648        360 4       1-May-29 4    $ 450,000.00     67.67                                       0.250
5016736        360 2       1-Apr-29 2    $ 254,790.98     78.46                                       0.250
5016737        360 6       1-May-29 6    $ 284,993.00     60.38                                       0.250
5016744        360 0       1-Mar-29 0    $ 253,203.13     80.00                                       0.250
5016765        360 3       1-May-29 3    $ 536,000.00     68.72                                       0.250
5016780        360 6       1-Apr-29 6    $ 319,750.37     80.00                                       0.250
5016788        360 8       1-Apr-29 8    $ 375,699.32     80.00                                       0.250
5016806        360 4       1-Apr-29 4    $ 285,771.29     62.17                                       0.250
5016993        360 9       1-May-29 9    $ 358,000.00     75.37                                       0.250
5017113        360 5       1-Apr-29 5    $ 272,781.69     75.00                                       0.250
5017250        360 6       1-Mar-29 6    $ 332,978.09     79.22                                       0.250
5017285        360 2       1-Apr-29 2    $ 263,478.46     90.00                          01           0.250
5017307        360 8       1-May-29 8    $ 408,000.00     85.00                          12           0.250
5017373        360 3       1-May-29 3    $ 259,200.00     90.00                          01           0.250
5017519        360 9       1-May-29 9    $ 388,000.00     80.00                                       0.250
5017631        360 2       1-Apr-29 2    $ 266,087.04     79.99                                       0.250
5017749        360 9       1-May-29 9    $ 352,000.00     80.00                                       0.250
5017800        360 9       1-May-29 9    $ 371,250.00     75.00                                       0.250
5017830        360 8       1-May-29 8    $ 330,000.00     46.15                                       0.250
5017838        360 5       1-Apr-29 5    $ 317,758.03     80.00                                       0.250
5017873        360 8       1-Apr-29 8    $ 296,750.49     69.88                                       0.250
5018198        360 1       1-Mar-29 1    $ 401,638.55     73.15                                       0.250
5018259        360 9       1-Apr-29 9    $ 499,600.16     86.96                          11           0.250
5018264        360 5       1-May-29 5    $ 512,000.00     60.24                                       0.250
5018294        360 3       1-Apr-29 3    $ 261,650.76     79.99                                       0.250
5018350        360 7       1-Mar-29 7    $ 331,512.38     90.00                          17           0.250
5018357        360 6       1-Apr-29 6    $ 328,743.35     70.00                                       0.250
5018369        360 5       1-Apr-29 5    $ 296,762.49     90.00                          12           0.250
5018379        360 6       1-Apr-29 6    $ 283,767.21     80.00                                       0.250
5018421        360 0       1-Apr-29 0    $ 247,806.54     80.00                                       0.250
5018442        360 8       1-Apr-29 8    $ 274,774.59     74.32                                       0.250
5018457        360 6       1-Apr-29 6    $ 204,840.08     58.40                                       0.250
5018460        360 2       1-Apr-29 2    $ 389,672.36     55.71                                       0.250
5018465        360 9       1-Apr-29 9    $ 299,741.71     58.82                                       0.250
5018481        360 9       1-Apr-29 9    $ 144,884.05     74.36                                       0.250
5018489        360 1       1-Apr-29 1    $ 279,776.09     80.00                                       0.250
5018491        360 1       1-Apr-29 1    $ 255,779.59     89.82                          06           0.250
5018500        360 1       1-Apr-29 1    $ 279,776.09     60.87                                       0.250
5018515        360 6       1-Apr-29 6    $ 275,240.41     94.99                          01           0.250
5018533        360 0       1-May-29 0    $ 285,600.00     80.00                                       0.250
5018536        360 8       1-Apr-29 8    $ 384,676.55     68.75                                       0.250
5018538        360 2       1-May-29 2    $ 272,000.00     64.00                                       0.250
5018589        360 4       1-May-29 4    $ 310,000.00     56.88                                       0.250
5018854        360 1       1-Apr-29 1    $ 251,808.24     89.36                          33           0.250
5018883        360 8       1-May-29 8    $ 294,600.00     39.28                                       0.250
5018895        360 0       1-May-29 0    $ 432,000.00     75.00                                       0.250
5019053        360 9       1-May-29 9    $ 487,600.00     76.19                                       0.250
5019194        360 8       1-May-29 8    $ 294,900.00     80.00                                       0.250
5019291        360 8       1-May-29 8    $ 420,000.00     73.68                                       0.250
5019308        360 9       1-May-29 9    $ 257,000.00     55.87                                       0.250
5019329        360 1       1-May-29 1    $ 400,000.00     43.72                                       0.250
5019341        360 6       1-May-29 6    $ 465,600.00     80.00                                       0.250
5019374        360 8       1-May-29 8    $ 293,000.00     73.25                                       0.250
5019811        360 7       1-Apr-29 7    $ 380,695.32     79.87                                       0.250
5019840        360 6       1-Apr-29 6    $ 486,500.89     79.99                                       0.250
5019855        360 4       1-Apr-29 4    $ 409,663.93     68.56                                       0.250
5019966        360 4       1-Apr-29 4    $ 449,640.14     51.43                                       0.250
5020452        360 8       1-May-29 8    $ 578,250.00     65.86                                       0.250
5020827        360 4       1-May-29 4    $ 265,200.00     71.68                                       0.250
5021007        360 4       1-May-29 4    $ 325,000.00     59.09                                       0.250
5021008        360 7       1-May-29 7    $ 274,500.00     90.00                          01           0.250
5021033        360 6       1-May-29 6    $ 507,000.00     69.45                                       0.250
5021040        360 9       1-Apr-29 9    $ 299,747.96     52.17                                       0.250
5021259        360 0       1-Apr-29 0    $ 249,400.40     80.00                                       0.250
5021740        360 5       1-Apr-29 5    $ 335,531.47     79.95                                       0.250
5021764        360 7       1-May-29 7    $ 375,000.00     75.00                                       0.250
5021781        360 5       1-May-29 5    $ 319,500.00     90.00                          33           0.250
5021801        360 7       1-May-29 7    $ 352,000.00     76.52                                       0.250
5021827        360 8       1-May-29 8    $ 390,000.00     72.90                                       0.250
5021829        360 2       1-May-29 2    $ 336,700.00     79.22                                       0.250
5021872        360 0       1-Apr-29 0    $ 369,718.46     61.67                                       0.250
5021917        360 8       1-May-29 8    $ 356,000.00     80.00                                       0.250
5021945        360 5       1-Apr-29 5    $ 645,956.86     68.78                                       0.250
5021946        360 6       1-May-29 6    $ 292,000.00     72.10                                       0.250
5021977        360 9       1-May-29 9    $ 307,000.00     77.33                                       0.250
5022155        360 0       1-Apr-29 0    $ 258,303.30     78.33                                       0.250
5022188        360 1       1-May-29 1    $ 400,000.00     64.52                                       0.250
5023087        360 0       1-Apr-29 0    $ 309,764.11     84.93                          01           0.250
5023762        360 2       1-May-29 2    $ 492,500.00     67.01                                       0.250
5023975        360 8       1-Apr-29 8    $ 291,777.81     80.00                                       0.250
5024006        360 7       1-May-29 7    $ 278,000.00     67.80                                       0.250
5024033        360 8       1-May-29 8    $ 311,500.00     58.77                                       0.250
5024540        360 9       1-May-29 9    $ 312,000.00     80.00                                       0.250
5024853        360 1       1-May-29 1    $ 469,000.00     75.04                                       0.250
5024922        360 0       1-May-29 0    $ 248,000.00     60.49                                       0.250
5025006        360 2       1-Apr-29 2    $ 349,720.11     48.28                                       0.250
5026123        360 5       1-Mar-29 5    $ 282,209.75     68.93                                       0.250
5026912        360 1       1-May-29 1    $ 288,000.00     80.00                                       0.250
5029303        360 4       1-May-29 4    $ 450,000.00     53.89                                       0.250
5029430        360 6       1-May-29 6    $ 513,000.00     58.63                                       0.250
5029493        360 9       1-May-29 9    $ 320,000.00     69.57                                       0.250
5029637        360 9       1-May-29 9    $ 472,000.00     64.66                                       0.250
5029726        360 8       1-May-29 8    $ 115,000.00     65.34                                       0.250
5029838        360 7       1-May-29 7    $ 637,850.00     67.14                                       0.250
5029857        360 7       1-May-29 7    $ 247,000.00     49.40                                       0.250
6767563        360 0       1-May-29 0    $ 225,000.00     53.57                                       0.250
6815115        360 7       1-Apr-29 7    $ 246,812.05     87.59                          01           0.250
6827394        360 8       1-May-29 8    $ 308,000.00     80.00                                       0.250
6827558        360 7       1-Apr-29 7    $ 622,501.79     78.36                                       0.250
6875335        360 1       1-Apr-29 1    $ 412,644.42     70.00                                       0.250
6878689        360 1       1-May-29 1    $ 283,000.00     73.51                                       0.250
6895051        360 5       1-May-29 5    $ 546,000.00     70.00                                       0.250
6903437        360 2       1-Sep-28 2    $ 253,383.99     80.13                                       0.250
6912694        360 9       1-May-29 9    $ 390,000.00     75.00                                       0.250
6926841        360 4       1-Jul-28 4    $ 267,089.80     89.70                          11           0.250
6930817        360 8       1-May-29 8    $ 900,000.00     64.29                                       0.250
6949121        360 6       1-Apr-29 6    $ 749,429.31     57.69                                       0.250
6959942        360 1       1-May-29 1    $ 380,200.00     79.99                                       0.250
6975468        360 3       1-Apr-29 3    $ 391,694.20     70.00                                       0.250
6975821        360 2       1-May-29 2    $ 320,000.00     57.87                                       0.250
7042717        360 3       1-Mar-29 3    $ 255,307.36     80.00                                       0.250
7071790        360 0       1-Apr-29 0    $ 379,296.17     80.00                                       0.250
7072781        360 4       1-Apr-29 4    $ 324,720.19     68.42                                       0.250
7085910        360 2       1-May-29 2    $ 584,000.00     80.00                                       0.250
7087022        360 8       1-May-29 8    $ 384,000.00     57.68                                       0.250
7092218        360 3       1-Apr-29 3    $ 291,152.69     80.00                                       0.250
7094563        360 1       1-Mar-29 1    $ 499,172.90     79.06                                       0.250
7102093        360 0       1-Apr-29 0    $ 784,707.06     80.00                                       0.250
7104385        360 2       1-May-29 2    $ 255,000.00     34.46                                       0.250
7106073        360 7       1-Apr-29 7    $ 360,425.53     89.99                          01           0.250
7109006        360 9       1-Apr-29 9    $ 449,612.56     66.67                                       0.250
7119959        360 8       1-Apr-29 8    $ 849,231.59     59.65                                       0.250
7129734        360 7       1-Oct-28 7    $ 467,449.97     79.93                                       0.250
7137758        360 7       1-May-29 7    $ 260,000.00     77.69                                       0.250
7143190        360 5       1-Feb-29 5    $ 316,775.03     79.99                                       0.250
7145467        360 3       1-Apr-29 3    $ 170,755.18     68.11                                       0.250
7145880        240 3       1-Apr-19 3    $ 322,607.30     80.00                                       0.250
7154026        360 6       1-Apr-29 6    $ 299,760.09     77.57                                       0.250
7201311        360 2       1-Mar-29 2    $ 253,103.29     94.99                          06           0.250
7207800        360 5       1-Apr-29 5    $ 551,436.25     80.00                                       0.250
7209152        360 4       1-Jan-29 4    $ 906,839.49     67.12                                       0.250
7213715        360 3       1-Apr-29 3    $ 342,019.42     70.00                                       0.250
7238066        360 9       1-Mar-29 9    $ 397,760.93     80.00                                       0.250
7238225        360 4       1-Apr-29 4    $ 305,705.34     50.99                                       0.250
7281478        360 1       1-Apr-29 1    $ 299,793.54     94.45                          06           0.250
7282267        360 8       1-Mar-29 8    $ 334,743.84     62.65                                       0.250
7282340        360 2       1-Apr-29 2    $ 322,764.99     79.99                                       0.250
7292381        360 5       1-May-29 5    $ 248,000.00     80.00                                       0.250
7295870        360 1       1-Mar-29 1    $ 303,747.07     71.41                                       0.250
7311376        360 3       1-May-29 3    $ 279,000.00     80.00                                       0.250
7316938        360 3       1-Apr-29 3    $ 359,726.07     80.00                                       0.250
7324996        360 9       1-Apr-29 9    $ 379,430.96     90.00                          01           0.250
7338836        360 5       1-Nov-28 5    $ 261,687.48     64.94                                       0.250
7341951        360 4       1-Mar-29 4    $ 349,221.65     90.00                          24           0.250
7345759        360 3       1-May-29 3    $ 310,000.00     77.50                                       0.250
7357937        360 2       1-Apr-29 2    $ 282,943.98     80.00                                       0.250
7373468        360 7       1-Apr-29 7    $ 433,153.34     80.00                                       0.250
7381260        360 0       1-May-29 0    $ 700,000.00     66.04                                       0.250
7386416        360 3       1-Apr-29 3    $ 253,801.85     49.80                                       0.250
7390679        360 0       1-Apr-29 0    $ 359,446.28     90.00                          17           0.250
7393592        360 1       1-Dec-28 1    $ 749,243.81     80.00                                       0.250
7396835        360 2       1-Apr-29 2    $ 315,765.48     75.24                                       0.250
7407434        360 5       1-May-29 5    $ 339,400.00     79.99                                       0.250
7409701        360 7       1-May-29 7    $ 360,000.00     90.00                          06           0.250
7411417        360 0       1-Mar-29 0    $ 274,630.14     89.96                          17           0.250
7411587        360 1       1-Apr-29 1    $ 287,769.69     90.00                          01           0.250
7418353        360 7       1-May-29 7    $ 246,650.00     79.99                                       0.250
7425142        360 9       1-Apr-29 9    $ 574,690.06     80.00                                       0.250
7431602        360 3       1-Apr-29 3    $ 463,528.57     80.00                                       0.250
7440757        360 9       1-May-29 9    $ 264,050.00     79.99                                       0.250
7447268        360 8       1-Apr-29 8    $ 636,477.85     65.00                                       0.250
7454292        360 8       1-May-29 8    $ 251,608.00     95.00                          11           0.250
7460363        360 3       1-Apr-29 3    $ 376,459.37     80.00                                       0.250
7476110        360 5       1-Apr-29 5    $ 479,616.15     56.47                                       0.250
7481387        360 0       1-Apr-29 0    $ 303,459.13     80.00                                       0.250
7483764        360 5       1-May-29 5    $ 265,000.00     77.94                                       0.250
7485252        360 3       1-Apr-29 3    $ 455,587.77     79.99                                       0.250
7487340        360 4       1-Apr-29 4    $ 507,583.59     80.00                                       0.250
7490582        360 1       1-Apr-29 1    $ 326,918.29     80.00                                       0.250
7503036        360 2       1-Apr-29 2    $ 396,482.68     80.00                                       0.250
7510337        360 4       1-May-29 4    $ 293,508.00     80.00                                       0.250
7513065        360 9       1-Mar-29 9    $ 261,859.53     94.98                          17           0.250
7514482        360 5       1-Apr-29 5    $ 338,042.59     80.00                                       0.250
7515478        360 4       1-Mar-29 4    $ 369,106.95     80.00                                       0.250
7519437        360 1       1-Apr-29 1    $ 344,980.68     90.00                          17           0.250
7520403        360 7       1-Apr-29 7    $ 359,732.83     59.02                                       0.250
7522203        360 9       1-Mar-29 9    $ 247,112.68     90.00                          01           0.250
7529861        360 5       1-Apr-29 5    $ 258,802.92     79.94                                       0.250
7531174        360 5       1-Apr-29 5    $ 747,430.83     80.00                                       0.250
7532093        360 1       1-Apr-29 1    $ 519,344.55     80.00                                       0.250
7534585        360 5       1-Apr-29 5    $ 268,605.45     80.00                                       0.250
7538809        360 0       1-Mar-29 0    $ 243,368.57     75.00                                       0.250
7540152        360 8       1-Apr-29 8    $ 279,612.08     71.75                                       0.250
7541255        360 3       1-Apr-29 3    $ 263,893.97     95.00                          12           0.250
7541521        360 1       1-Feb-29 1    $ 358,154.76     28.72                                       0.250
7543248        360 8       1-Apr-29 8    $ 375,706.69     79.83                                       0.250
7544344        360 6       1-May-29 6    $ 450,000.00     80.00                                       0.250
7549141        360 1       1-May-29 1    $ 279,450.00     63.95                                       0.250
7550906        360 5       1-Apr-29 5    $ 255,285.35     70.00                                       0.250
7552774        360 2       1-Apr-29 2    $ 392,470.00     79.99                                       0.250
7557547        360 7       1-May-29 7    $ 380,000.00     80.00                                       0.250
7558679        360 8       1-Apr-29 8    $ 365,577.61     80.00                                       0.250
7558682        360 7       1-May-29 7    $ 287,960.00     80.00                                       0.250
7562947        360 3       1-May-29 3    $ 325,000.00     56.13                                       0.250
7563802        360 3       1-Apr-29 3    $ 282,140.46     94.99                          11           0.250
7565087        360 1       1-Apr-29 1    $ 499,590.16     72.47                                       0.250
7565309        360 4       1-Apr-29 4    $ 535,549.69     80.00                                       0.250
7566700        360 9       1-Mar-29 9    $ 312,821.98     80.00                                       0.250
7567047        360 8       1-Apr-29 8    $ 278,182.82     80.00                                       0.250
7572109        360 5       1-Mar-29 5    $ 330,605.53     69.72                                       0.250
7576737        360 7       1-May-29 7    $ 336,000.00     80.00                                       0.250
7581186        360 9       1-May-29 9    $ 280,000.00     79.32                                       0.250
7581545        360 9       1-Mar-29 9    $ 848,567.71     77.27                                       0.250
7583086        360 7       1-May-29 7    $ 288,000.00     80.00                                       0.250
7585296        360 9       1-Apr-29 9    $ 309,764.12     80.00                                       0.250
7586697        360 6       1-Apr-29 6    $ 319,756.51     67.67                                       0.250
7587338        360 6       1-May-29 6    $ 350,000.00     74.47                                       0.250
7587907        360 3       1-Apr-29 3    $ 299,765.97     74.81                                       0.250
7588919        360 9       1-Apr-29 9    $ 326,007.87     90.00                          11           0.250
7590465        360 4       1-Mar-29 4    $ 309,490.30     86.11                          33           0.250
7590565        360 3       1-Apr-29 3    $ 283,267.42     80.00                                       0.250
7593659        360 3       1-Apr-29 3    $ 404,691.83     75.00                                       0.250
7594629        360 5       1-Apr-29 5    $ 709,418.02     78.45                                       0.250
7596148        360 4       1-May-29 4    $ 261,250.00     95.00                          13           0.250
7598215        360 4       1-Apr-29 4    $ 268,774.01     52.13                                       0.250
7599638        360 9       1-May-29 9    $ 350,000.00     67.18                                       0.250
7600453        360 2       1-Apr-29 2    $ 437,123.32     70.00                                       0.250
7600690        360 6       1-May-29 6    $ 260,000.00     65.85                                       0.250
7601146        360 3       1-May-29 3    $ 285,500.00     79.99                                       0.250
7601660        360 0       1-Apr-29 0    $ 557,830.12     79.99                                       0.250
7601771        360 0       1-May-29 0    $ 419,628.00     80.00                                       0.250
7602482        360 9       1-Apr-29 9    $ 299,747.96     70.59                                       0.250
7602562        360 1       1-Apr-29 1    $ 599,457.59     68.26                                       0.250
7603306        360 9       1-May-29 9    $ 268,000.00     74.86                                       0.250
7603439        360 2       1-May-29 2    $ 325,000.00     61.90                                       0.250
7603616        360 9       1-May-29 9    $ 287,550.00     94.99                          17           0.250
7604148        360 8       1-Apr-29 8    $ 375,699.32     68.36                                       0.250
7604308        360 1       1-Apr-29 1    $ 284,766.39     76.00                                       0.250
7604310        360 3       1-May-29 3    $ 337,500.00     75.00                                       0.250
7605270        360 8       1-Apr-29 8    $ 430,846.55     80.00                                       0.250
7605320        360 5       1-Mar-29 5    $ 279,539.62     80.00                                       0.250
7606099        360 6       1-Apr-29 6    $ 334,745.09     67.00                                       0.250
7606492        360 2       1-Apr-29 2    $ 317,751.93     80.00                                       0.250
7607922        360 4       1-Apr-29 4    $ 387,931.75     79.23                                       0.250
7608710        360 0       1-Apr-29 0    $ 513,368.35     70.00                                       0.250
7608725        360 9       1-Mar-29 9    $ 278,562.57     86.15                          01           0.250
7609104        360 1       1-Mar-29 1    $ 295,448.30     79.99                                       0.250
7609290        360 5       1-May-29 5    $ 410,000.00     76.64                                       0.250
7609866        360 4       1-Apr-29 4    $ 524,547.99     64.02                                       0.250
7609961        360 2       1-May-29 2    $ 278,850.00     80.00                                       0.250
7610060        360 3       1-Apr-29 3    $ 299,735.32     59.18                                       0.250
7610071        360 3       1-Apr-29 3    $ 397,689.16     80.00                                       0.250
7610506        360 5       1-May-29 5    $ 425,000.00     56.67                                       0.250
7611115        360 9       1-Apr-29 9    $ 311,126.10     75.00                                       0.250
7611231        360 5       1-May-29 5    $ 276,300.00     90.00                          17           0.250
7611267        360 4       1-May-29 4    $ 254,000.00     68.65                                       0.250
7612042        360 2       1-Apr-29 2    $ 386,731.79     90.00                          12           0.250
7612097        360 3       1-Apr-29 3    $ 322,735.24     79.75                                       0.250
7612156        360 2       1-Apr-29 2    $ 295,305.66     80.00                                       0.250
7612689        360 6       1-Apr-29 6    $ 627,372.48     70.00                                       0.250
7613327        360 4       1-Apr-29 4    $ 431,628.06     66.46                                       0.250
7613815        360 6       1-Apr-29 6    $ 263,273.13     79.85                                       0.250
7614844        360 6       1-Apr-29 6    $ 451,554.89     80.00                                       0.250
7615530        360 9       1-Apr-29 9    $ 274,751.39     69.59                                       0.250
7616241        360 8       1-Apr-29 8    $ 299,782.87     78.95                                       0.250
7616591        360 4       1-May-29 4    $ 500,000.00     71.43                                       0.250
7617473        360 0       1-Apr-29 0    $ 299,728.80     59.64                                       0.250
7617525        360 6       1-Apr-29 6    $ 424,684.59     69.68                                       0.250
7617531        360 7       1-Apr-29 7    $ 399,710.50     85.11                          01           0.250
7617694        360 4       1-Apr-29 4    $ 759,407.13     80.00                                       0.250
7617717        360 4       1-Mar-29 4    $ 375,381.79     66.55                                       0.250
7618385        360 1       1-Mar-29 1    $ 398,311.00     59.11                                       0.250
7618858        360 4       1-May-29 4    $ 320,252.00     80.00                                       0.250
7619538        360 6       1-Apr-29 6    $ 350,920.04     80.00                                       0.250
7620105        360 9       1-Apr-29 9    $ 644,458.12     35.83                                       0.250
7620989        360 3       1-May-29 3    $ 380,000.00     80.00                                       0.250
7621188        360 1       1-Apr-29 1    $ 274,740.79     90.00                          24           0.250
7622210        360 9       1-May-29 9    $ 450,000.00     54.28                                       0.250
7622516        360 6       1-Apr-29 6    $ 309,129.66     80.00                                       0.250
7622569        360 5       1-Mar-29 5    $ 269,456.25     90.00                          16           0.250
7623059        360 3       1-Apr-29 3    $ 267,790.94     80.00                                       0.250
7624338        360 1       1-Apr-29 1    $ 295,685.48     80.00                                       0.250
7624389        360 6       1-Apr-29 6    $ 290,817.25     93.89                          13           0.250
7624978        360 4       1-Apr-29 4    $ 274,240.22     80.00                                       0.250
7624994        360 2       1-Mar-29 2    $ 648,849.88     67.71                                       0.250
7625143        360 2       1-Apr-29 2    $ 281,036.00     75.00                                       0.250
7625657        360 1       1-Apr-29 1    $ 262,295.23     70.00                                       0.250
7626750        360 1       1-Apr-29 1    $ 291,748.59     80.00                                       0.250
7626776        360 5       1-Apr-29 5    $ 999,250.00     78.13                                       0.250
7627003        360 0       1-May-29 0    $ 560,000.00     80.00                                       0.250
7627249        360 7       1-Apr-29 7    $ 284,977.51     80.00                                       0.250
7627859        360 7       1-Mar-29 7    $ 298,720.04     80.00                                       0.250
7627982        360 2       1-Apr-29 2    $ 324,726.96     74.29                                       0.250
7629825        360 3       1-May-29 3    $ 318,600.00     90.00                          12           0.250
7630059        360 8       1-May-29 8    $ 256,500.00     95.00                          13           0.250
7630079        360 8       1-May-29 8    $ 491,600.00     56.18                                       0.250
7630396        360 3       1-May-29 3    $ 308,000.00     80.00                                       0.250
7631062        360 2       1-May-29 2    $ 385,000.00     68.14                                       0.250
7631065        360 7       1-May-29 7    $ 432,000.00     80.00                                       0.250
7631362        360 0       1-May-29 0    $ 371,000.00     79.78                                       0.250
7631508        360 5       1-Apr-29 5    $ 375,684.12     78.33                                       0.250
7633253        360 5       1-May-29 5    $ 306,000.00     80.00                                       0.250
7633818        360 6       1-May-29 6    $ 373,600.00     80.00                                       0.250
7635532        360 0       1-May-29 0    $ 302,500.00     80.00                                       0.250
7635743        360 2       1-Apr-29 2    $ 478,835.36     80.00                                       0.250
7636032        360 1       1-Apr-29 1    $ 599,520.19     48.00                                       0.250
7636106        360 2       1-Apr-29 2    $ 263,788.88     77.65                                       0.250
7636812        360 9       1-May-29 9    $ 428,000.00     80.00                                       0.250
7636819        360 4       1-May-29 4    $ 449,600.00     80.00                                       0.250
7638199        360 6       1-Apr-29 6    $ 387,190.12     78.28                                       0.250
7638305        360 9       1-May-29 9    $ 650,000.00     63.41                                       0.250
7639435        360 0       1-Apr-29 0    $ 302,711.67     80.00                                       0.250
7640138        360 3       1-May-29 3    $ 325,000.00     69.30                                       0.250
7640353        360 5       1-May-29 5    $ 281,518.00     90.00                          17           0.250
7641317        360 8       1-Apr-29 8    $ 352,731.40     78.10                                       0.250
7641987        360 4       1-Apr-29 4    $ 341,688.24     90.00                          33           0.250
7642214        360 1       1-Apr-29 1    $ 399,687.96     40.00                                       0.250
7642266        360 1       1-May-29 1    $ 276,000.00     80.00                                       0.250
7642391        360 1       1-Apr-29 1    $ 266,791.72     79.94                                       0.250
7642577        360 1       1-Apr-29 1    $ 335,737.89     80.00                                       0.250
7643086        360 5       1-Apr-29 5    $ 391,701.72     80.00                                       0.250
7643202        360 9       1-Apr-29 9    $ 349,691.20     70.00                                       0.250
7643525        360 9       1-Apr-29 9    $ 324,740.10     71.43                                       0.250
7643582        360 9       1-Apr-29 9    $ 271,765.81     69.74                                       0.250
7643621        360 4       1-Apr-29 4    $ 309,371.21     65.18                                       0.250
7643870        360 3       1-May-29 3    $ 700,000.00     56.00                                       0.250
7645092        360 9       1-May-29 9    $ 100,000.00     64.94                                       0.250
7645401        360 8       1-May-29 8    $ 316,880.00     85.00                          24           0.250
7645470        360 8       1-May-29 8    $ 560,000.00     80.00                                       0.250
7645629        360 8       1-Apr-29 8    $ 439,656.75     80.00                                       0.250
7645780        360 1       1-May-29 1    $ 348,000.00     80.00                                       0.250
7645885        360 3       1-Apr-29 3    $ 359,726.07     80.00                                       0.250
7646039        360 0       1-Apr-29 0    $ 308,959.79     71.08                                       0.250
7646115        360 9       1-Apr-29 9    $ 299,747.96     78.95                                       0.250
7646136        360 5       1-Apr-29 5    $ 350,719.31     90.00                          12           0.250
7646214        360 1       1-Apr-29 1    $ 341,739.76     77.73                                       0.250
7647125        360 5       1-Apr-29 5    $ 293,340.97     77.26                                       0.250
7647738        360 0       1-Apr-29 0    $ 331,727.87     80.00                                       0.250
7648089        360 4       1-May-29 4    $ 476,000.00     70.00                                       0.250
7648490        360 2       1-May-29 2    $ 95,000.00     48.72 0                                      0.250
7648928        360 6       1-May-29 6    $ 315,000.00     90.00                          01           0.250
7649097        360 1       1-Apr-29 1    $ 349,720.12     59.32                                       0.250
7650048        360 3       1-May-29 3    $ 378,000.00     80.00                                       0.250
7650626        360 4       1-Apr-29 4    $ 365,177.52     79.98                                       0.250
7650676        360 7       1-May-29 7    $ 275,200.00     80.00                                       0.250
7650878        360 7       1-Apr-29 7    $ 944,262.81     70.00                                       0.250
7651490        360 4       1-Apr-29 4    $ 282,368.36     79.89                                       0.250
7652033        360 6       1-May-29 6    $ 259,900.00     93.49                          17           0.250
7652649        360 8       1-May-29 8    $ 282,000.00     74.21                                       0.250
7653101        360 8       1-Apr-29 8    $ 500,618.78     72.61                                       0.250
7654221        360 8       1-May-29 8    $ 324,000.00     90.00                          01           0.250
7654230        360 9       1-May-29 9    $ 277,150.00     79.99                                       0.250
7654645        360 9       1-Apr-29 9    $ 499,600.16     80.00                                       0.250
7655486        360 4       1-Apr-29 4    $ 319,768.39     80.00                                       0.250
7656944        360 2       1-Apr-29 2    $ 169,864.06     62.96                                       0.250
7658370        360 8       1-Apr-29 8    $ 262,984.25     80.00                                       0.250
7659192        360 7       1-May-29 7    $ 251,750.00     95.00                          06           0.250
7659742        360 8       1-May-29 8    $ 263,650.00     79.99                                       0.250
7660747        360 7       1-May-29 7    $ 348,000.00     80.00                                       0.250
7660901        360 3       1-May-29 3    $ 344,900.00     80.00                                       0.250
7662354        360 6       1-May-29 6    $ 265,000.00     46.49                                       0.250
7662567        360 8       1-Apr-29 8    $ 375,706.69     79.91                                       0.250
7662907        360 7       1-May-29 7    $ 632,000.00     63.20                                       0.250
7663342        360 2       1-May-29 2    $ 248,649.00     78.00                                       0.250
7663405        360 1       1-May-29 1    $ 295,450.00     95.00                          33           0.250
7663502        360 8       1-Apr-29 8    $ 423,802.33     85.00                          33           0.250
7664855        360 9       1-Apr-29 9    $ 270,538.79     95.00                          33           0.250
7664926        360 1       1-Apr-29 1    $ 379,938.31     79.99                                       0.250
7664940        360 8       1-May-29 8    $ 248,317.71     81.97                          24           0.250
7665187        360 4       1-May-29 4    $ 312,800.00     80.00                                       0.250
7665781        360 4       1-May-29 4    $ 525,000.00     75.00                                       0.250
7666137        360 0       1-May-29 0    $ 622,500.00     75.00                                       0.250
7666362        360 5       1-May-29 5    $ 348,000.00     80.00                                       0.250
7667002        360 6       1-May-29 6    $ 254,400.00     80.00                                       0.250
7667912        360 1       1-Apr-29 1    $ 443,670.49     80.00                                       0.250
7668808        360 8       1-May-29 8    $ 405,000.00     75.14                                       0.250
7668880        360 6       1-Apr-29 6    $ 393,193.04     76.41                                       0.250
7669553        360 9       1-Apr-29 9    $ 449,648.96     75.00                                       0.250
7670068        360 1       1-Apr-29 1    $ 514,577.86     60.59                                       0.250
7670246        360 2       1-May-29 2    $ 536,000.00     80.00                                       0.250
7670611        360 0       1-May-29 0    $ 267,800.00     79.98                                       0.250
7672173        360 6       1-May-29 6    $ 260,000.00     66.67                                       0.250
7672227        360 1       1-May-29 1    $ 400,000.00     68.97                                       0.250
7672491        360 4       1-Apr-29 4    $ 299,776.35     94.53                          01           0.250
7672743        360 5       1-Apr-29 5    $ 333,745.86     69.58                                       0.250
7673403        360 3       1-Apr-29 3    $ 359,719.17     75.00                                       0.250
7674057        360 2       1-May-29 2    $ 255,000.00     75.56                                       0.250
7674612        360 8       1-Apr-29 8    $ 243,818.92     78.21                                       0.250
7675075        360 1       1-May-29 1    $ 400,000.00     32.00                                       0.250
7675195        360 3       1-Apr-29 3    $ 345,730.09     80.00                                       0.250
7676125        360 5       1-May-29 5    $ 264,000.00     80.00                                       0.250
7676569        360 5       1-May-29 5    $ 308,000.00     80.00                                       0.250
7677332        360 5       1-May-29 5    $ 261,170.00     53.85                                       0.250
7677796        360 4       1-May-29 4    $ 420,000.00     80.00                                       0.250
7677932        360 7       1-May-29 7    $ 474,750.00     61.28                                       0.250
7678227        360 6       1-Apr-29 6    $ 374,222.07     76.43                                       0.250
7678300        360 2       1-May-29 2    $ 281,250.00     75.00                                       0.250
7678557        360 3       1-May-29 3    $ 339,300.00     90.00                          01           0.250
7680524        360 0       1-May-29 0    $ 510,000.00     39.23                                       0.250
7681424        360 9       1-May-29 9    $ 260,000.00     80.00                                       0.250
7682626        360 5       1-May-29 5    $ 318,000.00     65.57                                       0.250
7682786        360 3       1-May-29 3    $ 260,700.00     79.99                                       0.250
7683093        360 0       1-May-29 0    $ 280,000.00     70.00                                       0.250
7683561        360 0       1-Apr-29 0    $ 270,766.68     69.49                                       0.250
7683867        360 8       1-May-29 8    $ 252,500.00     40.40                                       0.250
7684885        360 9       1-May-29 9    $ 332,500.00     70.00                                       0.250
7685312        360 4       1-May-29 4    $ 297,700.00     68.59                                       0.250
7685379        360 4       1-May-29 4    $ 258,400.00     80.00                                       0.250
7685459        360 5       1-May-29 5    $ 350,000.00     41.92                                       0.250
7685521        360 3       1-Apr-29 3    $ 483,622.44     75.63                                       0.250
7685758        360 2       1-May-29 2    $ 263,000.00     57.80                                       0.250
7686093        360 1       1-Apr-29 1    $ 284,178.14     71.10                                       0.250
7686429        360 2       1-May-29 2    $ 570,000.00     69.09                                       0.250
7686848        360 6       1-May-29 6    $ 315,700.00     70.00                                       0.250
7686932        360 1       1-May-29 1    $ 263,250.00     75.00                                       0.250
7687109        360 8       1-May-29 8    $ 478,543.00     80.00                                       0.250
7687288        360 5       1-May-29 5    $ 255,000.00     73.91                                       0.250
7687653        360 2       1-May-29 2    $ 456,000.00     60.00                                       0.250
7687947        360 7       1-May-29 7    $ 262,000.00     66.11                                       0.250
7688036        360 9       1-May-29 9    $ 335,000.00     79.76                                       0.250
7688201        360 3       1-May-29 3    $ 340,000.00     85.02                          17           0.250
7688429        360 2       1-Apr-29 2    $ 489,608.16     70.00                                       0.250
7688651        360 5       1-May-29 5    $ 200,000.00     48.19                                       0.250
7689837        360 5       1-May-29 5    $ 566,250.00     75.00                                       0.250
7692000        360 6       1-May-29 6    $ 300,000.00     69.77                                       0.250
7692088        360 4       1-Apr-29 4    $ 387,697.33     79.75                                       0.250
7693377        360 3       1-May-29 3    $ 300,000.00     94.94                          17           0.250
7693758        360 5       1-Apr-29 5    $ 999,257.85     79.68                                       0.250
7696268        360 8       1-May-29 8    $ 264,000.00     80.00                                       0.250
7696727        360 4       1-May-29 4    $ 360,000.00     80.00                                       0.250
7697333        360 3       1-May-29 3    $ 318,750.00     75.00                                       0.250
7698322        360 4       1-May-29 4    $ 260,950.00     90.00                          11           0.250
7700422        360 0       1-May-29 0    $ 285,000.00     75.00                                       0.250
7700642        360 0       1-Apr-29 0    $ 429,647.53     52.44                                       0.250
7701692        360 4       1-May-29 4    $ 352,000.00     80.00                                       0.250
7705253        360 3       1-May-29 3    $ 372,000.00     80.00                                       0.250
7706565        360 7       1-May-29 7    $ 245,500.00     94.97                          17           0.250
7708843        360 0       1-May-29 0    $ 548,000.00     80.00                                       0.250
7709809        360 9       1-May-29 9    $ 264,000.00     80.00                                       0.250
7711001        360 7       1-May-29 7    $ 416,000.00     66.56                                       0.250
7711082        360 2       1-May-29 2    $ 73,500.00     70.00 0                                      0.250
7711408        360 4       1-May-29 4    $ 375,000.00     65.22                                       0.250
7712371        360 5       1-May-29 5    $ 350,000.00     74.47                                       0.250
7715861        360 4       1-May-29 4    $ 340,000.00     71.58                                       0.250
7719935        360 4       1-May-29 4    $ 305,000.00     59.22                                       0.250
7720908        360 3       1-May-29 3    $ 300,000.00     92.02                          16           0.250
7724459        360 2       1-May-29 2    $ 272,000.00     80.00                                       0.250
7726305        360 1       1-May-29 1    $ 127,540.00     70.00                                       0.250

                                    $  289,271,287.46



</TABLE>
<PAGE>

NASCOR
NMI / 1999-16  Exhibit F-2
30 YEAR FIXED RATE NON RELOCATION  LOANS

(continued)

(i)             (xv)          (xvi)
- -----       -----------    --------

MORTGAGE       MASTER         FIXED
LOAN          SERVICE       RETAINE
NUMBER          FEE           YIELD
- --------    -----------    --------
4699654         0.017          0.608
4716112         0.017          0.608
4765675         0.017          0.983
4818663         0.017          0.000
4826828         0.017          0.358
4826909         0.017          0.000
4830823         0.017          0.608
4839938         0.017          0.483
4862615         0.017          0.483
4865850         0.017          0.483
4879708         0.017          0.858
4883014         0.017          0.608
4889278         0.017          0.233
4891309         0.017          0.483
4902152         0.017          0.358
4911891         0.017          0.483
4914886         0.017          0.233
4926758         0.017          0.608
4930049         0.017          0.233
4931751         0.017          0.983
4941578         0.017          0.483
4945298         0.017          0.108
4946637         0.017          0.858
4947865         0.017          0.733
4951209         0.017          0.233
4951252         0.017          0.483
4951614         0.017          0.483
4952543         0.017          0.233
4954882         0.017          0.483
4956347         0.017          0.358
4956630         0.017          0.358
4958805         0.017          0.108
4958960         0.017          0.358
4959853         0.017          0.608
4960261         0.017          0.000
4961404         0.017          0.358
4962294         0.017          0.608
4962753         0.017          0.000
4962772         0.017          0.000
4962920         0.017          0.608
4964716         0.017          0.108
4965057         0.017          0.608
4965176         0.017          0.000
4966864         0.017          0.233
4969754         0.017          0.000
4969995         0.017          0.608
4971043         0.017          0.108
4971379         0.017          0.000
4971757         0.017          0.483
4972111         0.017          0.108
4972456         0.017          0.233
4972460         0.017          0.358
4972571         0.017          0.358
4973297         0.017          0.483
4973570         0.017          0.608
4973794         0.017          0.358
4974162         0.017          0.233
4974292         0.017          0.233
4974421         0.017          0.108
4974446         0.017          0.108
4975081         0.017          0.233
4975752         0.017          0.358
4976212         0.017          0.000
4976217         0.017          0.358
4976264         0.017          0.483
4976354         0.017          0.233
4978528         0.017          0.483
4978826         0.017          0.233
4979176         0.017          0.983
4980418         0.017          0.000
4980589         0.017          0.608
4981144         0.017          0.858
4982108         0.017          0.358
4982310         0.017          0.483
4982519         0.017          0.733
4982626         0.017          0.233
4982663         0.017          0.358
4982667         0.017          0.000
4982730         0.017          0.358
4982800         0.017          0.000
4982814         0.017          0.108
4982950         0.017          0.000
4982958         0.017          0.608
4983192         0.017          0.000
4983347         0.017          0.358
4983855         0.017          0.000
4983877         0.017          0.483
4984058         0.017          0.608
4984215         0.017          0.000
4984343         0.017          0.108
4984599         0.017          0.358
4984627         0.017          0.358
4985052         0.017          0.483
4985145         0.017          0.233
4985333         0.017          0.000
4985471         0.017          0.733
4985557         0.017          0.358
4985916         0.017          0.733
4986007         0.017          0.733
4986463         0.017          0.358
4986606         0.017          0.608
4986827         0.017          0.108
4986877         0.017          0.000
4986937         0.017          0.233
4987050         0.017          0.233
4987192         0.017          0.358
4987199         0.017          0.000
4987429         0.017          0.858
4987569         0.017          0.233
4987659         0.017          1.108
4987692         0.017          0.608
4987969         0.017          0.233
4988033         0.017          0.233
4988050         0.017          0.108
4988120         0.017          0.000
4988347         0.017          0.108
4988396         0.017          0.233
4988461         0.017          0.483
4988503         0.017          0.233
4988618         0.017          0.233
4988778         0.017          0.608
4989023         0.017          0.483
4989283         0.017          0.483
4989682         0.017          0.000
4989920         0.017          0.233
4990006         0.017          0.608
4990766         0.017          0.000
4991129         0.017          0.733
4991164         0.017          0.000
4991221         0.017          0.608
4991227         0.017          0.733
4991309         0.017          0.233
4991606         0.017          0.733
4991631         0.017          0.483
4991787         0.017          0.358
4991930         0.017          0.983
4992096         0.017          0.358
4992302         0.017          1.108
4993397         0.017          0.733
4993400         0.017          0.483
4993872         0.017          0.233
4994122         0.017          0.608
4994152         0.017          0.483
4994159         0.017          0.608
4994602         0.017          0.233
4994717         0.017          0.483
4994740         0.017          0.483
4994842         0.017          0.358
4995194         0.017          0.108
4995617         0.017          0.358
4995735         0.017          0.358
4995800         0.017          0.108
4995989         0.017          0.483
4996274         0.017          0.000
4996320         0.017          0.608
4996418         0.017          0.108
4996516         0.017          0.233
4996776         0.017          0.483
4996786         0.017          0.733
4996842         0.017          0.233
4996895         0.017          0.233
4996914         0.017          0.358
4996942         0.017          0.358
4996976         0.017          0.483
4997019         0.017          0.983
4997057         0.017          0.483
4997111         0.017          0.483
4997162         0.017          0.108
4997225         0.017          0.108
4997867         0.017          0.608
4997973         0.017          0.483
4998052         0.017          0.483
4998168         0.017          0.608
4998309         0.017          0.483
4998468         0.017          0.858
4998493         0.017          0.000
4998604         0.017          0.233
4998632         0.017          0.483
4998749         0.017          0.608
4998953         0.017          0.000
4999331         0.017          0.483
4999464         0.017          0.733
5000142         0.017          0.000
5000435         0.017          0.000
5000449         0.017          0.858
5000457         0.017          0.733
5000494         0.017          0.483
5000582         0.017          0.000
5000717         0.017          0.733
5001015         0.017          0.233
5001025         0.017          0.608
5001093         0.017          0.108
5001140         0.017          0.608
5001147         0.017          0.608
5001166         0.017          0.608
5001242         0.017          0.608
5001274         0.017          0.608
5001430         0.017          0.608
5001505         0.017          0.358
5001510         0.017          0.233
5001566         0.017          0.483
5001587         0.017          0.233
5001711         0.017          0.000
5001717         0.017          0.233
5001861         0.017          0.983
5001980         0.017          0.233
5002018         0.017          0.233
5002020         0.017          0.233
5002084         0.017          0.233
5002202         0.017          0.608
5002451         0.017          0.358
5002539         0.017          0.000
5002545         0.017          0.233
5002665         0.017          0.000
5002710         0.017          0.733
5002740         0.017          0.608
5002760         0.017          0.983
5002788         0.017          0.483
5002807         0.017          0.233
5002899         0.017          0.358
5003147         0.017          0.108
5003156         0.017          0.608
5003198         0.017          0.483
5003392         0.017          0.733
5003601         0.017          0.483
5003806         0.017          0.483
5003918         0.017          0.000
5004035         0.017          0.000
5004042         0.017          0.483
5004138         0.017          0.358
5004185         0.017          0.483
5004197         0.017          0.483
5004270         0.017          0.000
5004350         0.017          0.608
5004363         0.017          0.858
5004370         0.017          0.358
5004401         0.017          0.358
5004423         0.017          0.233
5004427         0.017          0.983
5004529         0.017          0.733
5004549         0.017          0.108
5004604         0.017          0.483
5004812         0.017          0.983
5004854         0.017          0.233
5004870         0.017          0.233
5004896         0.017          1.108
5004909         0.017          1.108
5005062         0.017          0.358
5005171         0.017          0.608
5005238         0.017          0.000
5005289         0.017          0.608
5005305         0.017          0.733
5005362         0.017          0.358
5005369         0.017          0.608
5005370         0.017          0.483
5005383         0.017          0.983
5005405         0.017          0.858
5005439         0.017          0.608
5005444         0.017          1.108
5005452         0.017          1.108
5005460         0.017          0.858
5005478         0.017          0.608
5005842         0.017          0.733
5005904         0.017          0.358
5006095         0.017          0.358
5006096         0.017          0.733
5006345         0.017          0.483
5006517         0.017          0.483
5006522         0.017          0.608
5006829         0.017          0.233
5007001         0.017          0.108
5007188         0.017          0.000
5007319         0.017          0.608
5007358         0.017          0.108
5007396         0.017          0.483
5007397         0.017          0.233
5007404         0.017          0.358
5007473         0.017          0.983
5007533         0.017          0.233
5007553         0.017          0.483
5007599         0.017          0.358
5007601         0.017          0.233
5007928         0.017          1.108
5008016         0.017          0.608
5008017         0.017          0.483
5008167         0.017          0.608
5008197         0.017          0.358
5008278         0.017          0.733
5008335         0.017          1.108
5008416         0.017          0.233
5008472         0.017          0.483
5008514         0.017          0.483
5008546         0.017          0.483
5008548         0.017          0.483
5008638         0.017          0.483
5008645         0.017          0.608
5009028         0.017          0.733
5009157         0.017          0.483
5009160         0.017          0.358
5009178         0.017          0.483
5009208         0.017          0.483
5009312         0.017          0.483
5009916         0.017          0.858
5010023         0.017          0.233
5010030         0.017          0.983
5010060         0.017          0.233
5010070         0.017          0.483
5010187         0.017          0.483
5010247         0.017          0.983
5010270         0.017          0.733
5010340         0.017          0.733
5010397         0.017          0.000
5010420         0.017          0.108
5010447         0.017          0.108
5010472         0.017          0.233
5010562         0.017          0.358
5010670         0.017          0.358
5010860         0.017          0.858
5010910         0.017          0.483
5010999         0.017          0.608
5011046         0.017          0.358
5011247         0.017          0.608
5011261         0.017          0.358
5011508         0.017          0.358
5011678         0.017          0.483
5011739         0.017          0.983
5012088         0.017          0.233
5012221         0.017          0.608
5012327         0.017          0.608
5012337         0.017          0.608
5012481         0.017          0.233
5012614         0.017          0.233
5012691         0.017          0.233
5012933         0.017          0.358
5012980         0.017          0.858
5012995         0.017          1.108
5013096         0.017          0.983
5013262         0.017          1.108
5013273         0.017          0.733
5013429         0.017          0.858
5013559         0.017          0.233
5013599         0.017          0.233
5013927         0.017          0.000
5014175         0.017          1.108
5014428         0.017          0.358
5014450         0.017          0.000
5014482         0.017          0.483
5014654         0.017          0.858
5014805         0.017          0.358
5014892         0.017          0.358
5014893         0.017          0.608
5015070         0.017          0.108
5015130         0.017          0.608
5015423         0.017          0.358
5015574         0.017          0.108
5015616         0.017          0.233
5015676         0.017          0.358
5015713         0.017          0.483
5015749         0.017          0.358
5015759         0.017          0.858
5015798         0.017          0.483
5015829         0.017          0.858
5015880         0.017          0.608
5015936         0.017          0.733
5016039         0.017          0.608
5016128         0.017          0.000
5016224         0.017          0.483
5016244         0.017          0.233
5016299         0.017          0.733
5016582         0.017          0.358
5016638         0.017          0.233
5016648         0.017          0.358
5016736         0.017          0.233
5016737         0.017          0.358
5016744         0.017          0.483
5016765         0.017          0.233
5016780         0.017          0.483
5016788         0.017          0.358
5016806         0.017          0.358
5016993         0.017          0.233
5017113         0.017          0.358
5017250         0.017          0.483
5017285         0.017          0.108
5017307         0.017          0.358
5017373         0.017          0.608
5017519         0.017          0.108
5017631         0.017          0.358
5017749         0.017          0.358
5017800         0.017          0.358
5017830         0.017          0.000
5017838         0.017          0.608
5017873         0.017          0.108
5018198         0.017          0.233
5018259         0.017          0.358
5018264         0.017          0.233
5018294         0.017          0.608
5018350         0.017          0.000
5018357         0.017          0.483
5018369         0.017          0.358
5018379         0.017          0.233
5018421         0.017          0.483
5018442         0.017          0.233
5018457         0.017          0.483
5018460         0.017          0.108
5018465         0.017          0.000
5018481         0.017          0.358
5018489         0.017          0.358
5018491         0.017          0.000
5018500         0.017          0.358
5018515         0.017          0.608
5018533         0.017          0.483
5018536         0.017          0.108
5018538         0.017          0.483
5018589         0.017          0.233
5018854         0.017          0.608
5018883         0.017          0.358
5018895         0.017          1.108
5019053         0.017          0.108
5019194         0.017          0.233
5019291         0.017          0.233
5019308         0.017          0.733
5019329         0.017          0.483
5019341         0.017          0.108
5019374         0.017          0.483
5019811         0.017          0.358
5019840         0.017          0.233
5019855         0.017          0.233
5019966         0.017          0.358
5020452         0.017          0.358
5020827         0.017          0.483
5021007         0.017          0.233
5021008         0.017          0.108
5021033         0.017          0.358
5021040         0.017          0.108
5021259         0.017          0.358
5021740         0.017          0.358
5021764         0.017          0.483
5021781         0.017          0.233
5021801         0.017          0.233
5021827         0.017          0.233
5021829         0.017          0.358
5021872         0.017          0.608
5021917         0.017          0.233
5021945         0.017          0.108
5021946         0.017          0.483
5021977         0.017          0.483
5022155         0.017          0.608
5022188         0.017          0.483
5023087         0.017          0.608
5023762         0.017          0.233
5023975         0.017          0.608
5024006         0.017          0.108
5024033         0.017          0.483
5024540         0.017          0.483
5024853         0.017          0.483
5024922         0.017          0.483
5025006         0.017          0.358
5026123         0.017          1.108
5026912         0.017          0.358
5029303         0.017          0.608
5029430         0.017          0.608
5029493         0.017          0.733
5029637         0.017          0.608
5029726         0.017          0.983
5029838         0.017          0.608
5029857         0.017          0.608
6767563         0.017          0.483
6815115         0.017          0.608
6827394         0.017          0.608
6827558         0.017          0.358
6875335         0.017          0.000
6878689         0.017          0.608
6895051         0.017          0.233
6903437         0.017          0.358
6912694         0.017          0.483
6926841         0.017          1.108
6930817         0.017          0.608
6949121         0.017          0.608
6959942         0.017          0.733
6975468         0.017          0.483
6975821         0.017          0.000
7042717         0.017          0.608
7071790         0.017          0.608
7072781         0.017          0.000
7085910         0.017          0.358
7087022         0.017          0.358
7092218         0.017          0.483
7094563         0.017          0.233
7102093         0.017          0.000
7104385         0.017          0.608
7106073         0.017          0.608
7109006         0.017          0.000
7119959         0.017          0.000
7129734         0.017          0.608
7137758         0.017          0.358
7143190         0.017          0.000
7145467         0.017          0.733
7145880         0.017          0.608
7154026         0.017          0.358
7201311         0.017          0.483
7207800         0.017          0.108
7209152         0.017          0.000
7213715         0.017          0.233
7238066         0.017          0.358
7238225         0.017          0.358
7281478         0.017          1.108
7282267         0.017          0.358
7282340         0.017          0.000
7292381         0.017          0.233
7295870         0.017          0.733
7311376         0.017          0.108
7316938         0.017          0.608
7324996         0.017          0.108
7338836         0.017          0.233
7341951         0.017          0.483
7345759         0.017          0.358
7357937         0.017          0.000
7373468         0.017          0.358
7381260         0.017          0.108
7386416         0.017          0.483
7390679         0.017          0.608
7393592         0.017          0.858
7396835         0.017          0.733
7407434         0.017          0.608
7409701         0.017          0.733
7411417         0.017          0.608
7411587         0.017          0.358
7418353         0.017          0.233
7425142         0.017          0.358
7431602         0.017          0.000
7440757         0.017          0.483
7447268         0.017          0.233
7454292         0.017          0.733
7460363         0.017          0.000
7476110         0.017          0.358
7481387         0.017          0.358
7483764         0.017          0.858
7485252         0.017          0.000
7487340         0.017          0.233
7490582         0.017          0.000
7503036         0.017          0.358
7510337         0.017          1.108
7513065         0.017          0.733
7514482         0.017          0.608
7515478         0.017          0.358
7519437         0.017          0.483
7520403         0.017          0.733
7522203         0.017          0.483
7529861         0.017          0.608
7531174         0.017          0.608
7532093         0.017          0.483
7534585         0.017          0.858
7538809         0.017          0.483
7540152         0.017          0.608
7541255         0.017          0.483
7541521         0.017          0.483
7543248         0.017          0.483
7544344         0.017          0.233
7549141         0.017          0.358
7550906         0.017          0.108
7552774         0.017          0.108
7557547         0.017          0.483
7558679         0.017          0.608
7558682         0.017          0.608
7562947         0.017          0.233
7563802         0.017          0.733
7565087         0.017          0.233
7565309         0.017          0.108
7566700         0.017          0.108
7567047         0.017          0.483
7572109         0.017          0.233
7576737         0.017          0.608
7581186         0.017          0.483
7581545         0.017          0.108
7583086         0.017          0.483
7585296         0.017          0.608
7586697         0.017          0.608
7587338         0.017          0.233
7587907         0.017          0.483
7588919         0.017          0.733
7590465         0.017          0.233
7590565         0.017          0.233
7593659         0.017          0.608
7594629         0.017          0.233
7596148         0.017          1.108
7598215         0.017          0.108
7599638         0.017          0.000
7600453         0.017          0.000
7600690         0.017          0.483
7601146         0.017          0.108
7601660         0.017          0.108
7601771         0.017          0.483
7602482         0.017          0.108
7602562         0.017          0.000
7603306         0.017          0.733
7603439         0.017          0.000
7603616         0.017          0.733
7604148         0.017          0.358
7604308         0.017          0.233
7604310         0.017          0.608
7605270         0.017          0.233
7605320         0.017          0.233
7606099         0.017          0.608
7606492         0.017          0.483
7607922         0.017          0.233
7608710         0.017          0.108
7608725         0.017          0.608
7609104         0.017          0.608
7609290         0.017          0.358
7609866         0.017          0.000
7609961         0.017          0.000
7610060         0.017          0.000
7610071         0.017          0.608
7610506         0.017          0.483
7611115         0.017          0.483
7611231         0.017          0.483
7611267         0.017          0.358
7612042         0.017          1.108
7612097         0.017          0.233
7612156         0.017          0.358
7612689         0.017          0.108
7613327         0.017          0.000
7613815         0.017          0.000
7614844         0.017          0.000
7615530         0.017          0.000
7616241         0.017          0.858
7616591         0.017          0.108
7617473         0.017          0.000
7617525         0.017          0.733
7617531         0.017          0.858
7617694         0.017          0.483
7617717         0.017          0.233
7618385         0.017          0.000
7618858         0.017          0.233
7619538         0.017          0.483
7620105         0.017          0.108
7620989         0.017          0.108
7621188         0.017          0.608
7622210         0.017          0.483
7622516         0.017          0.483
7622569         0.017          0.233
7623059         0.017          0.483
7624338         0.017          0.108
7624389         0.017          0.358
7624978         0.017          0.108
7624994         0.017          0.000
7625143         0.017          0.608
7625657         0.017          0.483
7626750         0.017          0.000
7626776         0.017          0.733
7627003         0.017          0.733
7627249         0.017          0.483
7627859         0.017          0.358
7627982         0.017          0.108
7629825         0.017          0.858
7630059         0.017          0.608
7630079         0.017          0.483
7630396         0.017          0.233
7631062         0.017          0.358
7631065         0.017          0.858
7631362         0.017          0.358
7631508         0.017          0.108
7633253         0.017          0.858
7633818         0.017          0.608
7635532         0.017          0.358
7635743         0.017          0.608
7636032         0.017          0.358
7636106         0.017          0.358
7636812         0.017          0.233
7636819         0.017          0.000
7638199         0.017          0.358
7638305         0.017          0.733
7639435         0.017          0.233
7640138         0.017          0.233
7640353         0.017          0.483
7641317         0.017          0.608
7641987         0.017          0.483
7642214         0.017          0.483
7642266         0.017          0.000
7642391         0.017          0.483
7642577         0.017          0.483
7643086         0.017          0.608
7643202         0.017          0.000
7643525         0.017          0.358
7643582         0.017          0.000
7643621         0.017          0.233
7643870         0.017          0.358
7645092         0.017          0.858
7645401         0.017          0.483
7645470         0.017          0.608
7645629         0.017          0.483
7645780         0.017          0.108
7645885         0.017          0.608
7646039         0.017          0.483
7646115         0.017          0.108
7646136         0.017          0.358
7646214         0.017          0.608
7647125         0.017          0.000
7647738         0.017          0.233
7648089         0.017          0.233
7648490         0.017          1.108
7648928         0.017          0.483
7649097         0.017          0.358
7650048         0.017          0.733
7650626         0.017          0.000
7650676         0.017          0.358
7650878         0.017          0.483
7651490         0.017          0.233
7652033         0.017          0.608
7652649         0.017          0.983
7653101         0.017          0.608
7654221         0.017          0.233
7654230         0.017          0.000
7654645         0.017          0.358
7655486         0.017          0.858
7656944         0.017          0.358
7658370         0.017          0.233
7659192         0.017          0.608
7659742         0.017          0.733
7660747         0.017          0.733
7660901         0.017          0.233
7662354         0.017          0.108
7662567         0.017          0.483
7662907         0.017          0.608
7663342         0.017          0.483
7663405         0.017          1.233
7663502         0.017          0.233
7664855         0.017          0.483
7664926         0.017          0.233
7664940         0.017          0.858
7665187         0.017          0.733
7665781         0.017          0.608
7666137         0.017          0.358
7666362         0.017          0.233
7667002         0.017          0.483
7667912         0.017          0.733
7668808         0.017          0.233
7668880         0.017          0.483
7669553         0.017          0.483
7670068         0.017          0.233
7670246         0.017          0.608
7670611         0.017          0.733
7672173         0.017          0.483
7672227         0.017          0.233
7672491         0.017          0.733
7672743         0.017          0.608
7673403         0.017          0.483
7674057         0.017          0.233
7674612         0.017          0.733
7675075         0.017          0.483
7675195         0.017          0.483
7676125         0.017          0.483
7676569         0.017          0.358
7677332         0.017          0.358
7677796         0.017          0.483
7677932         0.017          0.108
7678227         0.017          0.733
7678300         0.017          0.483
7678557         0.017          0.733
7680524         0.017          0.483
7681424         0.017          0.233
7682626         0.017          0.608
7682786         0.017          0.483
7683093         0.017          0.108
7683561         0.017          0.000
7683867         0.017          0.858
7684885         0.017          0.608
7685312         0.017          0.483
7685379         0.017          0.483
7685459         0.017          0.108
7685521         0.017          0.483
7685758         0.017          0.483
7686093         0.017          0.483
7686429         0.017          0.233
7686848         0.017          0.000
7686932         0.017          0.233
7687109         0.017          0.608
7687288         0.017          0.483
7687653         0.017          0.733
7687947         0.017          0.608
7688036         0.017          0.483
7688201         0.017          0.733
7688429         0.017          0.358
7688651         0.017          0.483
7689837         0.017          0.608
7692000         0.017          0.358
7692088         0.017          0.483
7693377         0.017          0.608
7693758         0.017          0.733
7696268         0.017          0.608
7696727         0.017          0.000
7697333         0.017          0.608
7698322         0.017          0.483
7700422         0.017          0.483
7700642         0.017          0.233
7701692         0.017          0.733
7705253         0.017          0.233
7706565         0.017          0.733
7708843         0.017          0.608
7709809         0.017          0.108
7711001         0.017          0.358
7711082         0.017          0.733
7711408         0.017          0.358
7712371         0.017          0.108
7715861         0.017          0.358
7719935         0.017          0.358
7720908         0.017          0.608
7724459         0.017          0.233
7726305         0.017          0.983



COUNT:           809
WAC:     7.163730639
WAM:     358.8836504
WALTV:   72.34174388



<PAGE>


                                   EXHIBIT F-3

            [Schedule of Mortgage Loans Serviced by Other Servicers]

<TABLE>

NASCOR
NMI / 1999-16  Exhibit F-3 (Part A)
30 YEAR FIXED RATE NON RELOCATION LOANS

<CAPTION>


(i)          (ii)                                       (iii)       (iv)         (v)        (vi)       (vii)      (viii)
- -----        ---------------------------    -----     --------    --------    --------   ----------  --------   -----------
                                                                                 NET
MORTGAGE                                                          MORTGAGE    MORTGAGE    CURRENT    ORIGINAL    SCHEDULED
LOAN                                         ZIP      PROPERTY    INTEREST    INTEREST    MONTHLY     TERM TO    MATURITY
NUMBER       CITY               STATE       CODE        TYPE        RATE        RATE      PAYMENT    MATURITY      DATE
- --------     -------------------------------------------------------------    --------   ----------  --------   -----------
<S>         <C>                 <C>         <C>        <C>        <C>         <C>      <C>            <C>      <C>
4859345      MEDINA              OH         44256        SFD        7.500       6.500    $2,202.53      360      1-Aug-28
4885986      MISSION VIEJO       CA         92692        SFD        7.250       6.500    $2,101.11      360      1-Oct-28
4906880      VISTA               CA         92084        SFD        7.375       6.500    $1,899.36      360      1-Oct-28
4943567      HOUSTON             TX         77024        SFD        6.875       6.500    $5,255.43      360      1-Oct-28
4959872      MAITLAND            FL         32751        SFD        7.625       6.500    $2,374.30      360      1-Mar-28
4961092      ATLANTA             GA         30350        SFD        6.500       6.233    $1,625.42      360      1-Dec-26
4972511      ATLANTA             GA         30327        SFD        6.625       6.358    $4,642.25      360      1-Jan-29
4981473      CLAYTON             CA         94517        SFD        7.250       6.500    $3,274.45      360      1-Jan-29
4981853      FREMONT             CA         94539        SFD        7.000       6.500    $2,328.56      360      1-Jan-29
4992496      SUWANEE             GA         30024        SFD        7.000       6.500    $2,102.36      360      1-Feb-29
5000641      FLORENCE            MA         01060        SFD        7.250       6.500    $2,387.62      360      1-Apr-29
5003476      ALBUQUERQUE         NM         87114        SFD        7.000       6.500    $1,676.57      360      1-Mar-29
5011166      ENGLEWOOD           FL         34223        SFD        7.375       6.500    $2,762.70      360      1-Apr-29
5020436      SALT LAKE CITY      UT         84105        SFD        7.250       6.500    $2,054.98      240      1-May-19
5025087      BOGART              GA         30622        SFD        7.000       6.500    $2,208.80      360      1-Mar-29
5025103      POWDER SPRINGS      GA         30127        SFD        7.000       6.500    $2,561.41      360      1-Feb-29
5025179      ATLANTA             GA         30331        PUD        6.875       6.500    $1,767.14      360      1-Apr-29
5025197      BIRMINGHAM          AL         35213        SFD        6.875       6.500    $2,516.04      360      1-Nov-28
5025220      FRANKLIN            TN         37064        SFD        6.500       6.233    $3,033.93      360      1-Nov-28
5025244      PONTE VEDRA BEACH   FL         32082        SFD        7.000       6.500    $2,228.76      360      1-Feb-29
5025302      PALMETTO            FL         34221        SFD        7.375       6.500    $2,055.62      360      1-Mar-29
5025318      NASHVILLE           TN         37221        SFD        6.875       6.500    $2,299.25      360      1-Mar-29
5025332      KNOXVILLE           TN         37922        SFD        6.875       6.500    $2,627.72      360      1-Mar-29
5025361      LOOKOUT MOUNTAIN    TN         37350        SFD        6.875       6.500    $1,970.79      360      1-Nov-28
5025380      ATLANTA             GA         30306        SFD        6.875       6.500    $2,135.02      360      1-Mar-29
5025410      BRENTWOOD           TN         37027        SFD        7.000       6.500    $1,816.28      360      1-Jan-29
5025449      TAMPA               FL         33611        SFD        7.125       6.500    $1,829.15      360      1-Dec-28
5025483      BRENTWOOD           TN         37027        SFD        6.625       6.358    $1,536.75      360      1-Feb-29
5025488      LEXINGTON           KY         40502        SFD        6.875       6.500    $2,299.25      360      1-Mar-29
5026593      CANTON              GA         30114        SFD        6.750       6.483    $1,725.27      360      1-Oct-28

</TABLE>
<PAGE>

<TABLE>
NASCOR
NMI / 1999-16  Exhibit F-3 (Part A)
30 YEAR FIXED RATE NON RELOCATION LOANS


(continued)

<CAPTION>

(i)             (ix)         (x)        (xi)        (xii)      (xiii)      (xIv)       (xv)        (xvI)
- -----        -----------   ------     ---------  ----------   --------   ---------------------- ----------
               CUT-OFF
MORTGAGE        DATE                              MORTGAGE                 T.O.P.     MASTER       FIXED
LOAN          PRINCIPAL                           INSURANCE    SERVICE    MORTGAGE    SERVICE    RETAINED
NUMBER         BALANCE       LTV       SUBSIDY      CODE         FEE        LOAN        FEE        YIELD
- --------    -----------   ------     ---------  ----------   --------   ---------------------- ----------
<S>          <C>            <C>       <C>       <C>             <C>      <C>         <C>         <C>
4859345      $312,827.29    90.00                               0.250                  0.017       0.483
4885986      $306,287.26    80.00                               0.250                  0.017       0.108
4906880      $273,411.68    73.33                               0.250                  0.017       0.483
4943567      $795,213.70    64.00                               0.250                  0.017       0.233
4959872      $293,930.62    89.99                               0.250                  0.017       0.483
4961092      $255,708.42    76.76                               0.250                  0.017       0.233
4972511      $722,420.13    55.77                               0.250                  0.017       0.608
4981473      $478,488.57    75.00                               0.250                  0.017       0.483
4981853      $348,842.35    74.47                    06         0.250                  0.017       0.733
4992496      $315,218.37    79.80                    12         0.250                  0.017       0.858
5000641      $349,726.96    69.03                               0.250                  0.017       0.000
5003476      $251,585.66    75.00                               0.250                  0.017       0.000
5011166      $399,695.63    68.38                               0.250                  0.017       0.233
5020436      $260,000.00    74.71                               0.250                  0.017       0.608
5025087      $331,454.15    80.00                               0.250                  0.017       0.233
5025103      $383,162.86    78.25                               0.250                  0.017       0.233
5025179      $268,774.01    75.56                               0.250                  0.017       0.108
5025197      $381,041.52    75.10                               0.250                  0.017       0.108
5025220      $477,360.91    80.00                               0.250                  0.017       0.000
5025244      $334,171.40    66.34                               0.250                  0.017       0.233
5025302      $297,170.67    68.42                               0.250                  0.017       0.608
5025318      $349,410.23    58.33                               0.250                  0.017       0.108
5025332      $399,325.97    80.00                               0.250                  0.017       0.108
5025361      $298,465.93    70.59                               0.250                  0.017       0.108
5025380      $324,452.35    68.19                               0.250                  0.017       0.108
5025410      $271,801.63    73.78                               0.250                  0.017       0.233
5025449      $270,300.25    75.00                               0.250                  0.017       0.358
5025483      $239,361.24    53.47                               0.250                  0.017       0.000
5025488      $349,129.09    63.64                               0.250                  0.017       0.108
5026593      $264,369.55    77.10                               0.250                  0.017       0.000


          $10,603,108.40



COUNT:                    30
WAC:             6.990320394
WAM:             351.3420771
WALTV:           73.66656199

</TABLE>

<PAGE>



NASCOR
NMI / 1999-16 Exhibit F-3 (Part B)
30 YEAR FIXED RATE NON RELOCATION  LOANS

(i)             (xvii)                          (xviii)
- -----           -----------                     -----------
MORTGAGE                                        NMI
LOAN                                            LOAN
NUMBER          SERVICER                        SELLER
- --------        -----------------------------  ---------------------------------
4859345         AMERICA FIRST CREDIT UNION      AMERICA FIRST CREDIT UNION
4885986         BANK UNITED OF TEXAS            BANK UNITED OF TEXAS
4906880         BANK UNITED OF TEXAS            BANK UNITED OF TEXAS
4943567         BANK UNITED OF TEXAS            BANK UNITED OF TEXAS
4959872         BANKNORTH MORTGAGE COMPANY      BANKNORTH MORTGAGE COMPANY
4961092         CHARTER BANK FOR SAVINGS        CHARTER BANK FOR SAVINGS
4972511         COUNTRYWIDE FUNDING CORP.       COUNTRYWIDE FUNDING CORP.
4981473         GMAC MORTGAGE CORP. OF PA       GMAC MORTGAGE CORP. OF PA
4981853         NATIONAL CITY MORTGAGE CO.      NATIONAL CITY MORTGAGE CO.
4992496         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5000641         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5003476         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5011166         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5020436         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025087         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025103         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025179         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025197         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025220         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025244         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025302         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025318         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025332         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025361         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025380         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025410         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025449         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025483         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5025488         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.
5026593         SUNTRUST MORTGAGE, INC.         SUNTRUST MORTGAGE, INC.

COUNT:                                       30
WAC:                                6.990320394
WAM:                                351.3420771
WALTV:                              73.66656199

<PAGE>


                                    EXHIBIT G

                               REQUEST FOR RELEASE
                             (for Trustee/Custodian)

Loan Information

      Name of Mortgagor:               _____________________________

      Servicer
      Loan No.:                        _____________________________

Custodian/Trustee

      Name:                            _____________________________

      Address:                         _____________________________

                                       _____________________________

      Custodian/Trustee
      Mortgage File No.:               _____________________________

Seller

      Name:                            _____________________________

      Address:                         _____________________________

                                       _____________________________

      Certificates:                    Mortgage Pass-Through Certificates,
                                       Series 1999-16

            The  undersigned  Master Servicer  hereby  acknowledges  that it has
received from First Union  National Bank, as Trustee for the Holders of Mortgage
Pass-Through Certificates,  Series 1999-16, the documents referred to below (the
"Documents").  All capitalized  terms not otherwise  defined in this Request for
Release  shall  have  the  meanings  given  them in the  Pooling  and  Servicing
Agreement dated as of May 28, 1999 (the "Pooling and Servicing Agreement") among
the Trustee, the Seller and the Master Servicer.

( )   Promissory Note dated  ______________,  199__, in the original principal
      sum of $___________, made by ____________________, payable to, or endorsed
      to the order of, the Trustee.

( )   Mortgage   recorded   on    _____________________    as   instrument   No.
      ______________   in  the  County   Recorder's  Office  of  the  County  of
      ____________________, State of _______________________ in book/reel/docket
      ____________________ of official records at page/image ------------.

( )   Deed  of  Trust  recorded  on   ____________________   as  instrument  No.
      _________________  in  the  County  Recorder's  Office  of the  County  of
      ___________________,   State  of   _________________  in  book/reel/docket
      ____________________ of official records at page/image ____________.

( )   Assignment  of  Mortgage  or Deed of Trust  to the  Trustee,  recorded  on
      ______________________________  as instrument  No.  ______________  in the
      County Recorder's Office of the County of ______________________, State of
      _____________________ in book/reel/docket ____________________ of official
      records at page/image ____________.

( )   Other   documents,   including  any   amendments,   assignments  or  other
      assumptions of the Mortgage Note or Mortgage.

( )   ---------------------------------------------

( )   ---------------------------------------------

( )   ---------------------------------------------

( )   ---------------------------------------------

           The undersigned  Master Servicer  hereby  acknowledges  and agrees as
follows:

            (1) The Master  Servicer  shall hold and  retain  possession  of the
      Documents in trust for the benefit of the Trustee, solely for the purposes
      provided in the Agreement.

            (2) The Master  Servicer  shall not cause or permit the Documents to
      become subject to, or encumbered by, any claim, liens,  security interest,
      charges,  writs of  attachment or other  impositions  nor shall the Master
      Servicer  assert  or seek to assert  any  claims or rights of setoff to or
      against the Documents or any proceeds thereof.

            (3) The Master  Servicer  shall return the  Documents to the Trustee
      when the need therefor no longer exists, unless the Mortgage Loan relating
      to the Documents has been  liquidated  and the proceeds  thereof have been
      remitted to the  Certificate  Account and except as expressly  provided in
      the Agreement.

            (4) The Documents and any proceeds  thereof,  including any proceeds
      of proceeds,  coming into the possession or control of the Master Servicer
      shall at all times be earmarked  for the account of the  Trustee,  and the
      Master  Servicer  shall keep the Documents  and any proceeds  separate and
      distinct  from all other  property  in the Master  Servicer's  possession,
      custody or control.



                                            NORWEST BANK MINNESOTA, NATIONAL
                                                      ASSOCIATION



                                             By: __________________________



                                            Title: ________________________

Date: ________________, 19__


<PAGE>


                                    EXHIBIT H

                                         AFFIDAVIT    PURSUANT    TO   SECTION
                                         860E(e)(4)  OF THE  INTERNAL  REVENUE
                                         CODE OF  1986,  AS  AMENDED,  AND FOR
                                         NON-ERISA INVESTORS



STATE OF                )
                        )  ss.:
COUNTY OF               )


            [NAME OF  OFFICER],  being first duly sworn,  deposes and says:

      (1)  That  he  is  [Title  of  Officer]  of  [Name  of   Purchaser]   (the
"Purchaser"),  a  [description  of type of entity] duly  organized  and existing
under the laws of the [State of ] [United  States],  on behalf of which he makes
this affidavit.

      (2) That the Purchaser's Taxpayer  Identification  Number is [ ].

      (3) That the  Purchaser is not a  "disqualified  organization"  within the
meaning of Section  860E(e)(5),of  the Internal Revenue Code of 1986, as amended
(the "Code"),  or an ERISA  Prohibited  Holder,  and will not be a "disqualified
organization" or an ERISA Prohibited Holder, as of [date of transfer],  and that
the Purchaser is not acquiring  Norwest Asset  Securities  Corporation  Mortgage
Pass-Through  Certificates,  Series 1999-16, Class [A-R] [A-LR] Certificate (the
"Class [A-R] [A-LR]  Certificate")  for the account of, or as agent (including a
broker, nominee, or other middleman) for, any person or entity from which it has
not received an affidavit substantially in the form of this affidavit. For these
purposes,  a "disqualified  organization"  means the United States, any state or
political  subdivision  thereof,  any  foreign  government,   any  international
organization,  any agency or instrumentality of any of the foregoing (other than
an instrumentality if all of its activities are subject to tax and a majority of
its  board of  directors  is not  selected  by such  governmental  entity),  any
cooperative  organization  furnishing  electric  energy or  providing  telephone
service to persons in rural areas as described in Code Section 1381(a)(2)(C), or
any organization  (other than a farmers'  cooperative  described in Code Section
521) that is exempt from  taxation  under the Code unless such  organization  is
subject to the tax on unrelated business income imposed by Code Section 511. For
these purposes,  an "ERISA Prohibited  Holder" means an employee benefit plan or
other  retirement  arrangement  subject  to Title I of the  Employee  Retirement
Income  Security Act of 1974,  as amended  ("ERISA"),  or Code Section 4975 or a
governmental plan, as defined in Section 3(32) of ERISA, subject to any federal,
state or local law which is, to a  material  extent,  similar  to the  foregoing
provisions of ERISA or the Code  (collectively,  a "Plan") or a Person acting on
behalf  of or  investing  the  assets  of such a Plan.

      (4) That the Purchaser  historically  has paid its debts as they have come
due and  intends  to pay  its  debts  as they  come  due in the  future  and the
Purchaser  intends to pay taxes  associated  with holding the Class [A-R] [A-LR]
Certificate as they become due.

      (5) That the Purchaser  understands that it may incur tax liabilities with
respect to the Class [A-R] [A-LR]  Certificate in excess of cash flows generated
by the Class [A-R] [A-LR] Certificate.

      (6)  That  the  Purchaser  will  not  transfer  the  Class  [A-R]  [A-LR]
Certificate to any person or entity from which the Purchaser has not received an
affidavit  substantially  in the  form of this  affidavit  and as to  which  the
Purchaser has actual knowledge that the requirements set forth in paragraph 3, 4
or 7 hereof are not  satisfied or that the Purchaser has reason to know does not
satisfy  the  requirements  set  forth in  paragraph  4  hereof.

      (7) That the  Purchaser  (i) is a U.S.  Person or (ii) is a person  other
than a U.S.  Person (a  "Non-U.S.  Person")  that holds the Class  [A-R]  [A-LR]
Certificate  in  connection  with the conduct of a trade or business  within the
United States and has furnished the transferor and the Trustee with an effective
Internal  Revenue  Service  Form 4224 or  successor  form at the time and in the
manner required by the Code or (iii) is a Non-U.S.  Person that has delivered to
both the  transferor  and the Trustee an opinion of a nationally  recognized tax
counsel to the effect that the transfer of the Class [A-R] [A-LR] Certificate to
it is in  accordance  with the  requirements  of the  Code  and the  regulations
promulgated  thereunder  and  that  such  transfer  of the  Class  [A-R]  [A-LR]
Certificate  will not be  disregarded  for federal  income tax  purposes.  "U.S.
Person"  means a citizen or resident of the United  States,  a  corporation,  or
partnership  (unless,  in the case of a partnership,  Treasury  regulations  are
adopted that provide otherwise) created or organized in or under the laws of the
United States any state thereof or the District of Columbia, including an entity
treated as a corporation  or  partnership  for federal  income tax purposes,  an
estate  whose income is subject to U.S.  federal  income tax  regardless  of its
source  or a trust if a court  within  the  United  States  is able to  exercise
primary  supervision over the administration of such trust, and one or more such
U.S.  Persons have the  authority to control all  substantial  decisions of such
trust (or, to the extent provided in applicable  Treasury  regulations,  certain
trusts in existence on August 20, 1996 which are eligible to elect to be treated
as U.S.  Persons).

      (8) That the  Purchaser  agrees to such  amendments  of the  Pooling  and
Servicing Agreement as may be required to further effectuate the restrictions on
transfer of the Class A-R Certificate to such a "disqualified  organization," an
agent thereof,  an ERISA Prohibited Holder or a person that does not satisfy the
requirements  of paragraph 4, paragraph 5 and paragraph 7 hereof.

      (9) That the Purchaser consents to the designation of the Master Servicer
as  its  agent  to  act as  "tax  matters  person"  of  the  [Upper-Tier  REMIC]
[Lower-Tier  REMIC]  pursuant  to  Section  3.01 of the  Pooling  and  Servicing
Agreement,  and if such  designation is not permitted by the Code and applicable
law, to act as tax matters person if requested to do so.

            IN WITNESS  WHEREOF,  the Purchaser has caused this instrument to be
executed on its behalf,  pursuant to authority of its Board of Directors, by its
[Title of Officer] this ___ day of , 19 __.


                                       [NAME OF PURCHASER]


                                       By:__________________________
                                          [Name of Officer]
                                          [Title of Officer]

            Personally  appeared  before me the  above-named  [Name of Officer],
known  or  proved  to me to be  the  same  person  who  executed  the  foregoing
instrument and to be the [Title of Officer], of the Purchaser,  and acknowledged
to me that he [she]  executed  the same as his  [her]  free act and deed and the
free act and deed of the Purchaser.

            Subscribed and sworn before me this __ day of __________, 19 __.


- ---------------------------------------
NOTARY PUBLIC

COUNTY OF   ___________________________

STATE OF    ___________________________

My commission expires the __ day of __________, 19__.


<PAGE>


                                    EXHIBIT I

           [Letter from Transferor of Class [A-R] [A-LR] Certificate]

                                     [Date]

First Union National Bank
230 South Tryon Street
Charlotte, North Carolina 28288

     Re:   Norwest Asset Securities Corporation,
           Series 1999-16, Class [A-R] [A-LR]

Ladies and Gentlemen:

            [Transferor]  has reviewed the attached  affidavit of  [Transferee],
and has no actual knowledge that such affidavit is not true and has no reason to
know that the information contained in paragraph 4 thereof is not true.



                                       Very truly yours,



                                       [Transferor]


<PAGE>


                                    EXHIBIT J

                      NORWEST ASSET SECURITIES CORPORATION

                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1999-16
                    CLASS [A-PO][B-4][B-5][B-6] CERTIFICATES

                               TRANSFEREE'S LETTER

                                                      ----------------- --, ----

First Union National Bank
230 South Tryon Street
Charlotte, North Carolina 28288

Norwest Asset Securities Corporation
7485 New Horizon Way
Frederick, Maryland 21703

            The undersigned (the "Purchaser") proposes to purchase Norwest Asset
Securities Corporation Mortgage Pass-Through Certificates, Series 1999-16, Class
[A-PO][B-4][B-5][B-6]    Certificates    (the    "Class    [A-PO][B-4][B-5][B-6]
Certificates")  in the  principal  amount  of  $___________.  In doing  so,  the
Purchaser hereby acknowledges and agrees as follows:

            Section 1.  Definitions.  Each  capitalized term used herein and not
otherwise  defined  herein shall have the meaning  ascribed to it in the Pooling
and  Servicing  Agreement,  dated as of  January  28,  1999  (the  "Pooling  and
Servicing Agreement") among Norwest Asset Securities Corporation, as seller (the
"Seller"), Norwest Bank Minnesota, National Association, as master servicer (the
"Master Servicer") and First Union National Bank, as trustee (the "Trustee"), of
Norwest Asset Securities Corporation Mortgage Pass-Through Certificates,  Series
1999-16.

            Section 2.  Representations  and  Warranties  of the  Purchaser.  In
connection with the proposed transfer,  the Purchaser represents and warrants to
the Seller, the Master Servicer and the Trustee that:

            (a) The Purchaser is duly  organized,  validly  existing and in good
standing under the laws of the jurisdiction in which the Purchaser is organized,
is authorized to invest in the Class [A-PO][B-4][B-5][B-6]  Certificates, and to
enter into this Agreement, and duly executed and delivered this Agreement.

            (b) The  Purchaser  is  acquiring  the  Class  [A-PO][B-4][B-5][B-6]
Certificates  for its  own  account  as  principal  and  not  with a view to the
distribution thereof, in whole or in part.

            [(c) The Purchaser  has knowledge of financial and business  matters
and is capable of evaluating  the merits and risks of an investment in the Class
[A-PO][B-4][B-5][B-6]  Certificates;  the Purchaser has sought such  accounting,
legal  and tax  advice  as it has  considered  necessary  to  make  an  informed
investment  decision;  and the Purchaser is able to bear the economic risk of an
investment  in the Class  [A-PO][B-4][B-5][B-6]  Certificates  and can  afford a
complete loss of such investment.]

            [(c) Re: The Purchaser is a "Qualified  Institutional  Buyer" within
the meaning of Rule 144A of the Act.]

            (d) The  Purchaser  confirms that (a) it has received and reviewed a
copy of the Private Placement  Memorandum dated __________ __, 19__, relating to
the Class  [A-PO][B-4][B-5][B-6]  Certificates  and  reviewed,  to the extent it
deemed appropriate,  the documents attached thereto or incorporated by reference
therein, (b) it has had the opportunity to ask questions of, and receive answers
from the Seller concerning the Class [A-PO][B-4][B-5][B-6]  Certificates and all
matters  relating  thereto,  and obtain any  additional  information  (including
documents) relevant to its decision to purchase the Class  [A-PO][B-4][B-5][B-6]
Certificates  that the Seller  possesses  or can  possess  without  unreasonable
effort or expense and (c) it has undertaken its own independent  analysis of the
investment in the Class [A-PO][B-4][B-5][B-6]  Certificates.  The Purchaser will
not use or disclose any  information it receives in connection with its purchase
of the Class [A-PO][B-4][B-5][B-6]  Certificates other than in connection with a
subsequent sale of Class [A-PO][B-4][B-5][B-6] Certificates.

            (e) Either (i) the  Purchaser  is not an  employee  benefit  plan or
other  retirement  arrangement  subject  to Title I of the  Employee  Retirement
Income  Security  Act of 1974,  as amended,  ("ERISA"),  or Section  4975 of the
Internal Revenue Code of 1986, as amended (the "Code"),  or a governmental plan,
as defined in Section 3(32) of ERISA subject to any federal,  state or local law
("Similar  Law")  which is,  to a  material  extent,  similar  to the  foregoing
provisions  of ERISA or the Code  (collectively,  a "Plan"),  an agent acting on
behalf of a Plan, or a person  utilizing the assets of a Plan or (ii) [for Class
[B-4][B-5][B-6] Certificates only] if the Purchaser is an insurance company, (A)
the source of funds used to purchase the Class [B-4][B-5][B-6] Certificate is an
"insurance  company general account" (as such term is defined in Section V(e) of
Prohibited  Transaction Class Exemption 95-60 ("PTE 95-60"),  60 Fed. Reg. 35925
(July 12,  1995),  (B) there is no Plan with respect to which the amount of such
general  account's  reserves and liabilities  for the contract(s)  held by or on
behalf of such Plan and all other  Plans  maintained  by the same  employer  (or
affiliate  thereof as  defined  in Section  V(a)(1) of PTE 95-60) or by the same
employee  organization  exceeds 10% of the total of all reserves and liabilities
of such general  account (as such amounts are  determined  under Section I(a) of
PTE 95-60) at the date of  acquisition  and (C) the purchase and holding of such
Class  [B-4][B-5][B-6]  Certificates  are  covered by  Sections I and III of PTE
95-60  or  (iii)  the  Purchaser  has  provided  (a) a  "Benefit  Plan  Opinion"
satisfactory  to the  Seller and the  Trustee  of the Trust  Estate and (b) such
other opinions of counsel,  officers'  certificates and agreements as the Seller
or the Master  Servicer may have required.  A Benefit Plan Opinion is an opinion
of counsel to the effect that the proposed transfer will not cause the assets of
the Trust Estate to be regarded as "plan  assets" and subject to the  prohibited
transaction  provisions  of ERISA,  the Code or Similar Law and will not subject
the Trustee,  the Seller or the Master Servicer to any obligation in addition to
those undertaken in the Pooling and Servicing Agreement (including any liability
for civil penalties or excise taxes imposed  pursuant to ERISA,  Section 4975 of
the Code or Similar Law).

            (f) If the  Purchaser  is a  depository  institution  subject to the
jurisdiction of the Office of the Comptroller of the Currency ("OCC"), the Board
of  Governors  of the  Federal  Reserve  System  ("FRB"),  the  Federal  Deposit
Insurance Corporation ("FDIC"),  the Office of Thrift Supervision ("OTS") or the
National Credit Union  Administration  ("NCUA"),  the Purchaser has reviewed the
"Supervisory Policy Statement on Securities  Activities" dated April 29, 1992 of
the Federal Financial  Institutions  Examination  Council and the April 15, 1994
Interim  Revision  thereto as adopted by the OCC, FRB,  FDIC, OTS and NCUA (with
modifications  as  applicable),  as  appropriate,  other  applicable  investment
authority,  rules, supervisory policies and guidelines of these agencies and, to
the extent  appropriate,  state banking  authorities  and has concluded that its
purchase  of  the  Class  [A-PO][B-4][B-5][B-6]  Certificates  is in  compliance
therewith.

            Section 3. Transfer of Class [A-PO][B-4][B-5][B-6] Certificates.

            (a) The Purchaser  understands that the Class  [A-PO][B-4][B-5][B-6]
Certificates  have not been  registered  under the  Securities  Act of 1933 (the
"Act") or any state  securities laws and that no transfer may be made unless the
Class  [A-PO][B-4][B-5][B-6]  Certificates  are  registered  under  the  Act and
applicable state law or unless an exemption from registration is available.  The
Purchaser further  understands that neither the Seller,  the Master Servicer nor
the Trustee is under any obligation to register the Class  [A-PO][B-4][B-5][B-6]
Certificates or make an exemption  available.  In the event that such a transfer
is to be made in reliance  upon an exemption  from the Act or  applicable  state
securities  laws, (i) the Trustee shall require,  in order to assure  compliance
with such laws, that the  Certificateholder's  prospective transferee certify to
the  Trustee  as to the  factual  basis for the  registration  or  qualification
exemption   relied  upon,  and  (ii)  unless  the  transferee  is  a  "Qualified
Institutional  Buyer" within the meaning of Rule 144A of the Act, the Trustee or
the Seller  may, if such  transfer is made within  three years from the later of
(a) the Closing  Date or (b) the last date on which the Seller or any  affiliate
thereof was a holder of the Certificates proposed to be transferred,  require an
Opinion of Counsel that such transfer may be made pursuant to an exemption  from
the Act and state  securities  laws,  which  Opinion of Counsel  shall not be an
expense  of  the  Trustee,   the  Master  Servicer  or  the  Seller.   Any  such
Certificateholder  desiring to effect such transfer shall, and does hereby agree
to,  indemnify  the  Trustee,  the Master  Servicer,  any Paying Agent acting on
behalf of the Trustee and the Seller  against any  liability  that may result if
the transfer is not so exempt or is not made in accordance with such federal and
state laws.

            (b) No transfer of a Class  [A-PO][B-4][B-5][B-6]  Certificate shall
be made  unless  the  transferee  provides  the Seller  and the  Trustee  with a
Transferee's Letter, substantially in the form of this Agreement.

            (c) The Purchaser acknowledges that its Class  [A-PO][B-4][B-5][B-6]
Certificates  bear  a  legend  setting  forth  the  applicable  restrictions  on
transfer.

            IN WITNESS WHEREOF,  the undersigned has caused this Agreement to be
validly  executed by its duly  authorized  representative  as of the day and the
year first above written.


                                       [PURCHASER]


                                       By: ______________________________


                                       Its: ______________________________


<PAGE>


                                    EXHIBIT K

                      NORWEST ASSET SECURITIES CORPORATION

                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1999-16
                   CLASS [A-14] [B-1] [B-2] [B-3] CERTIFICATES

                               TRANSFEREE'S LETTER

                                                      ---------------- --, ----

First Union National Bank
230 South Tryon Street
Charlotte, North Carolina 28288

Norwest Asset Securities Corporation
7485 New Horizon Way
Frederick, Maryland 21703

            The undersigned (the "Purchaser") proposes to purchase Norwest Asset
Securities Corporation Mortgage Pass-Through Certificates, Series 1999-16, Class
[A-14]  [B-1] [B-2] [B-3]  Certificates  (the  "Class  [A-14]  [B-1] [B-2] [B-3]
Certificates")  in the  principal  amount  of  $___________.  In doing  so,  the
Purchaser hereby acknowledges and agrees as follows:

            Section 1.  Definitions.  Each  capitalized term used herein and not
otherwise  defined  herein shall have the meaning  ascribed to it in the Pooling
and  Servicing  Agreement,  dated as of May 28, 1999 (the "Pooling and Servicing
Agreement")  among  Norwest  Asset  Securities   Corporation,   as  seller  (the
"Seller"), Norwest Bank Minnesota, National Association, as master servicer (the
"Master  Servicer") and First Union National Bank, as trustee (the "Trustee") of
Norwest Asset Securities Corporation Mortgage Pass-Through Certificates,  Series
1999-16.

            Section 2.  Representations  and  Warranties  of the  Purchaser.  In
connection with the proposed transfer,  the Purchaser represents and warrants to
the Seller, the Master Servicer and the Trustee that:

            Either (i) the  Purchaser  is not an employee  benefit plan or other
retirement  arrangement  subject to Title I of the  Employee  Retirement  Income
Security  Act of 1974,  as amended,  ("ERISA"),  or Section 4975 of the Internal
Revenue Code of 1986,  as amended  (the  "Code"),  or a  governmental  plan,  as
defined in Section  3(32) of ERISA  subject to any  federal,  state or local law
("Similar  Law")  which is,  to a  material  extent,  similar  to the  foregoing
provisions  of ERISA or the Code  (collectively,  a "Plan"),  an agent acting on
behalf  of a Plan,  or a person  utilizing  the  assets of a Plan or (ii) if the
Purchaser is an insurance company,  (A) the source of funds used to purchase the
Class [A-14] [B-1] [B-2] [B-3]  Certificate  is an  "insurance  company  general
account"  (as such term is  defined in Section  V(e) of  Prohibited  Transaction
Class  Exemption  95-60 ("PTE 95-60"),  60 Fed. Reg. 35925 (July 12, 1995),  (B)
there is no Plan with  respect  to which the  amount of such  general  account's
reserves and liabilities  for the contract(s)  held by or on behalf of such Plan
and all other Plans  maintained by the same  employer (or  affiliate  thereof as
defined in Section  V(a)(1) of PTE 95-60) or by the same employee  organization,
exceed 10% of the total of all reserves and  liabilities of such general account
(as such amounts are determined  under Section I(a) of PTE 95-60) at the date of
acquisition   and  (C)  the   purchase   and   holding  of  such  Class   [A-14]
[B-1][B-2][B-3]  Certificate  are  covered by Sections I and III of PTE 95-60 or
(iii) the Purchaser has provided (a) a "Benefit  Plan Opinion"  satisfactory  to
the Seller and the  Trustee of the Trust  Estate and (b) such other  opinions of
counsel,  officers'  certificates  and  agreements  as the  Seller or the Master
Servicer may have  required.  A Benefit Plan Opinion is an opinion of counsel to
the effect  that the  proposed  transfer  will not cause the assets of the Trust
Estate to be regarded as "plan assets" and subject to the prohibited transaction
provisions  of ERISA,  the Code or Similar Law and will not subject the Trustee,
the  Seller or the  Master  Servicer  to any  obligation  in  addition  to those
undertaken in the Pooling and Servicing  Agreement  (including any liability for
civil penalties or excise taxes imposed  pursuant to ERISA,  Section 4975 of the
Code or Similar Law).

            IN WITNESS WHEREOF,  the undersigned has caused this Agreement to be
validly  executed by its duly  authorized  representative  as of the day and the
year first above written.


                                       [PURCHASER]


                                       By: _____________________________


                                       Its: _____________________________


                                       [Reserved]


<PAGE>


                                    EXHIBIT L

                              SERVICING AGREEMENTS

                   Norwest Mortgage, Inc. Servicing Agreement

                   SunTrust Mortgage, Inc. Servicing Agreement

                         Bank United Servicing Agreement

                 BankNorth Mortgage Company Servicing Agreement

               National City Mortgage Company Servicing Agreement

                  GMAC Mortgage Corporation Servicing Agreement

                Countrywide Home Loans, Inc. Servicing Agreement

                 America First Credit Union Servicing Agreement

                Charter Bank for Savings, FSB Servicing Agreement


<PAGE>


                                    EXHIBIT M

                      [FORM OF SPECIAL SERVICING AGREEMENT]

                 SPECIAL SERVICING AND COLLATERAL FUND AGREEMENT

            This  SPECIAL   SERVICING  AND   COLLATERAL   FUND   AGREEMENT  (the
"Agreement") is made and entered int,  between Norwest Bank Minnesota,  National
Association (the "Company" and "Norwest Bank") and (the "Purchaser").

                              PRELIMINARY STATEMENT

__________________  is the  holder  of the  entire  interest  in  Norwest  Asset
Securities Corporation Mortgage Pass-Through Certificates, Series 1999-16, Class
____ (the "Class B Certificates"). The Class B Certificates were issued pursuant
to a Pooling and  Servicing  Agreement  dated as of May 28,  1999 among  Norwest
Asset Securities Corporation, as seller (the "Seller"),  Norwest Bank Minnesota,
National  Association,  as Master  Servicer and First Union  National  Bank,  as
Trustee.

__________________ intends to resell all of the Class B Certificates directly to
the Purchaser on or promptly after the date hereof.

            In connection  with such sale,  the parties  hereto have agreed that
the  Company  will cause,  to the extent that the Company as Master  Servicer is
granted  such  authority  in  the  related  Servicing  Agreements,  the  related
servicers  (each a related  "Servicer"),  which service the Mortgage Loans which
comprise  the Trust  Estate  related to the above  referenced  series  under the
related servicing agreements (each a related "Servicing  Agreement"),  to engage
in certain special servicing procedures relating to foreclosures for the benefit
of the Purchaser, and that the Purchaser will deposit funds in a collateral fund
to cover any losses  attributable to such procedures as well as all advances and
costs in connection therewith, as set forth herein.

            In  consideration of the mutual  agreements  herein  contained,  the
receipt and  sufficiency of which are hereby  acknowledged,  the Company and the
Purchaser agree that the following  provisions  shall become effective and shall
be binding on and enforceable by the Company and the Purchaser:


                                    ARTICLE V

                                   DEFINITIONS

            Section 5.01      Defined Terms.

            Whenever used in this  Agreement,  the following  words and phrases,
unless the context otherwise requires, shall have the following meanings:

            Business  Day: Any day other than (i) a Saturday or a Sunday or (ii)
a day on which  banking  institutions  in the State of New York are  required or
authorized by law or executive order to be closed.

            Collateral  Fund: The fund  established  and maintained  pursuant to
Section 3.01 hereof.

            Collateral Fund Permitted Investments: Either (i) obligations of, or
obligations fully guaranteed as to principal and interest by, the United States,
or any agency or instrumentality  thereof,  provided such obligations are backed
by the full faith and  credit of the United  States,  (ii) a money  market  fund
rated in the highest rating  category by a nationally  recognized  rating agency
selected by the Company,  (iii) cash,  (iv) mortgage  pass-through  certificates
issued or guaranteed by Government National Mortgage Association, FNMA or FHLMC,
(v) commercial paper (including both  non-interest-bearing  discount obligations
and interest-bearing  obligations payable on demand or on a specified date), the
issuer of which may be an affiliate  of the Company,  having at the time of such
investment  a  rating  of at  least  P-1  by  Moody's  Investors  Service,  Inc.
("Moody's")  or at least D-1 by Duff & Phelps Credit Rating Co.  ("DCR") or (vi)
demand  and time  deposits  in,  certificates  of  deposit  of,  any  depository
institution  or  trust  company  (which  may be an  affiliate  of  the  Company)
incorporated under the laws of the United States of America or any state thereof
and subject to  supervision  and  examination  by federal  and/or state  banking
authorities,  so long as at the time of such investment either (x) the long-term
debt  obligations of such depository  institution or trust company have a rating
of at least AA by DCR or Aa2 by Moody's, (y) the certificate of deposit or other
unsecured  short-term debt  obligations of such depository  institution or trust
company  have a  rating  of at  least  D-1 by DCR or P-1 by  Moody's  or (z) the
depository  institution or trust company is one that is acceptable to either DCR
or Moody's and, for each of the preceding  clauses (i),  (iv), (v) and (vi), the
maturity  thereof  shall be not later  than the  earlier to occur of (A) 30 days
from the date of the related investment and (B) the next succeeding Distribution
Date as defined in the related Pooling and Servicing Agreement.

            Commencement  of  Foreclosure:  The first official  action  required
under local law in order to commence  foreclosure  proceedings  or to schedule a
trustee's  sale under a deed of trust,  including (i) in the case of a mortgage,
any filing or service of process  necessary to commence an action to  foreclose,
or (ii) in the case of a deed of  trust,  posting,  the  publishing,  filing  or
delivery of a notice of sale, but not including in either case (x) any notice of
default,  notice of intent to foreclose or sell or any other action prerequisite
to  the  actions  specified  in (i) or  (ii)  above,  (y)  the  acceptance  of a
deed-in-lieu  of foreclosure  (whether in connection  with a sale of the related
property or otherwise) or (z) initiation and completion of a short pay-off.

            Current Appraisal: With respect to any Mortgage Loan as to which the
Purchaser has made an Election to Delay Foreclosure, an appraisal of the related
Mortgaged  Property  obtained  by the  Purchaser  at its  own  expense  from  an
independent  appraiser  (which  shall  not be an  affiliate  of  the  Purchaser)
acceptable to the Company as nearly contemporaneously as practicable to the time
of  the  Purchaser's  election,   prepared  based  on  the  Company's  customary
requirements for such appraisals.

            Election to Delay  Foreclosure:  Any  election by the  Purchaser  to
delay the Commencement of Foreclosure, made in accordance with Section 2.02(b).

            Election to Foreclose: Any election by the Purchaser to proceed with
the Commencement of Foreclosure, made in accordance with Section 2.03(a).

            Monthly  Advances:  Principal  and interest  advances and  servicing
advances including costs and expenses of foreclosure.

            Required  Collateral Fund Balance:  As of any date of determination,
an amount  equal to the  aggregate  of all  amounts  previously  required  to be
deposited in the Collateral Fund pursuant to Section  2.02(d) (after  adjustment
for all  withdrawals  and  deposits  pursuant  to Section  2.02(e))  and Section
2.03(b) (after  adjustment for all withdrawals and deposits  pursuant to Section
2.03(c)) and Section 3.02 to be reduced by all withdrawals therefrom pursuant to
Section 2.02(g) and Section 2.03(d).

            Section 1.02      Definitions Incorporated by Reference.

            All capitalized  terms not otherwise defined in this Agreement shall
have the meanings assigned in the Pooling and Servicing Agreement.


                                   ARTICLE VI

                          SPECIAL SERVICING PROCEDURES

            Section 6.01      Reports and Notices.

            (a) In  connection  with the  performance  of its  duties  under the
Pooling and  Servicing  Agreement  relating to the  realization  upon  defaulted
Mortgage  Loans,  the Company as Master  Servicer shall provide to the Purchaser
the following notices and reports:

               (i) Within five  Business Days after each  Distribution  Date (or
      included in or with the monthly statements to Certificateholders  pursuant
      to the Pooling and Servicing Agreement), the Company, shall provide to the
      Purchaser a report,  using the same  methodology  and  calculations in its
      standard servicing reports,  indicating for the Trust Estate the number of
      Mortgage  Loans that are (A) thirty days,  (B) sixty days, (C) ninety days
      or more  delinquent or (D) in  foreclosure,  and  indicating for each such
      Mortgage Loan the loan number and outstanding principal balance.

               (ii) Prior to the  Commencement of Foreclosure in connection with
      any Mortgage Loan, the Company shall cause (to the extent that the Company
      as Master  Servicer is granted  such  authority  in the related  Servicing
      Agreement)  the Servicer to provide the  Purchaser  with a notice (sent by
      telecopier)  of such proposed and imminent  foreclosure,  stating the loan
      number and the aggregate amount owing under the Mortgage Loan. Such notice
      may be  provided  to the  Purchaser  in the  form of a copy of a  referral
      letter from such Servicer to an attorney  requesting  the  institution  of
      foreclosure.

            (b) If  requested  by the  Purchaser,  the  Company  shall cause the
Servicer  (to the extent  that the Company as Master  Servicer  is granted  such
authority in the related  Servicing  Agreement) to make its servicing  personnel
available  (during  their  normal  business  hours)  to  respond  to  reasonable
inquiries,  by phone or in writing by facsimile,  electronic,  or overnight mail
transmission,  by the Purchaser in connection  with any Mortgage Loan identified
in a report under  subsection (a) (i) (B), (a) (i) (C), (a) (i) (D), or (a) (ii)
which has been given to the Purchaser;  provided,  that (1) the related Servicer
shall only be required to provide  information that is readily accessible to its
servicing personnel and is  non-confidential  and (2) the related Servicer shall
respond   within  five   Business   Days  orally  or  in  writing  by  facsimile
transmission.

            (c) In  addition  to the  foregoing,  the  Company  shall  cause the
Servicer  (to the extent  that the Company as Master  Servicer  is granted  such
authority in the related  Servicing  Agreement) to provide to the Purchaser such
information as the Purchaser may reasonably request provided, however, that such
information  is consistent  with normal  reporting  practices,  concerning  each
Mortgage  Loan that is at least ninety days  delinquent  and each  Mortgage Loan
which has become  real estate  owned,  through  the final  liquidation  thereof;
provided,   that  the  related  Servicer  shall  only  be  required  to  provide
information  that  is  readily  accessible  to its  servicing  personnel  and is
non-confidential  provided,  however,  that the  Purchaser  will  reimburse  the
Company and the related Servicer for any out of pocket expenses.

            Section 6.02 Purchaser's Election to Delay Foreclosure Proceedings.

            (a) The  Purchaser  shall be deemed to direct the  Company to direct
(to the extent that the Company as Master  Servicer is granted such authority in
the related Servicing Agreement) the related Servicer that in the event that the
Company does not receive written notice of the Purchaser's  election pursuant to
subsection (b) below within 24 hours (exclusive of any intervening  non-Business
Days) of  transmission  of the notice provided by the Company under Section 2.01
(a) (ii)  subject to  extension  as set forth in Section  2.02(b),  the  related
Servicer may proceed with the  Commencement  of  Foreclosure  in respect of such
Mortgage Loan in accordance with its normal foreclosure policies without further
notice  to the  Purchaser.  Any  foreclosure  that  has  been  initiated  may be
discontinued  (i) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage  Loan  (including  by means of a short  payoff  approved by the related
Servicer) or (ii) if the related Servicer has reached the terms of a forbearance
agreement  with the  borrower.  In the latter  case,  the related  Servicer  may
complete such forbearance agreement unless instructed otherwise by the Purchaser
within two Business Days notification.

            (b) In  connection  with any  Mortgage  Loan with respect to which a
notice under Section 2.01(a)(ii) has been given to the Purchaser,  the Purchaser
may elect to instruct  the  Company to cause,  to the extent that the Company as
Master  Servicer is granted such authority in the related  Servicing  Agreement,
the related Servicer to delay the Commencement of Foreclosure until such time as
the  Purchaser  determines  that  the  related  Servicer  may  proceed  with the
Commencement of  Foreclosure.  Such election must be evidenced by written notice
received  within 24 hours  (exclusive of any intervening  non-Business  Days) of
transmission  of the notice  provided by the Company under Section  2.01(a)(ii).
Such 24 hour period  shall be extended  for no longer  than an  additional  four
Business Days after the receipt of the  information  if the  Purchaser  requests
additional information related to such foreclosure;  provided, however, that the
Purchaser  will have at least  one  Business  Day to  respond  to any  requested
additional  information.  Any such additional information shall be provided only
to the extent it (i) is not confidential in nature and (ii) is obtainable by the
related  Servicer  from  existing  reports,  certificates  or  statements  or is
otherwise readily  accessible to its servicing  personnel.  The Purchaser agrees
that it has no right to deal with the mortgagor during such period.  However, if
such servicing activities include acceptance of a deed-in-lieu of foreclosure or
short  payoff,  the  Purchaser  will be notified and given two Business  Days to
respond.

            (c) With respect to any Mortgage  Loan as to which the Purchaser has
made an Election to Delay  Foreclosure,  the  Purchaser  shall  obtain a Current
Appraisal  as soon as  practicable,  but in no event more than 15 business  days
thereafter, and shall provide the Company with a copy of such Current Appraisal.

            (d)  Within  two  Business  Days of  making  any  Election  to Delay
Foreclosure,  the  Purchaser  shall remit by wire  transfer to the Company,  for
deposit in the Collateral Fund, an amount,  as calculated by the Company,  equal
to the sum of (i) 125% of the  greater  of the unpaid  principal  balance of the
Mortgage  Loan and the  value  shown in the  Current  Appraisal  referred  to in
subsection  (c) above (or, if such Current  Appraisal has not yet been obtained,
the Company's  estimate  thereof,  in which case the required deposit under this
subsection  shall be adjusted upon obtaining such Current  Appraisal),  and (ii)
three months' interest on the Mortgage Loan at the applicable  Mortgage Interest
Rate.  If any  Election to Delay  Foreclosure  extends for a period in excess of
three  months  (such  excess  period  being  referred  to herein as the  "Excess
Period"), within two Business Days the Purchaser shall remit by wire transfer in
advance to the  Company for  deposit in the  Collateral  Fund the amount of each
additional month's interest, as calculated by the Company,  equal to interest on
the  Mortgage  Loan at the  applicable  Mortgage  Interest  Rate for the  Excess
Period. The terms of this Agreement will no longer apply to the servicing of any
Mortgage  Loan upon the  failure of the  Purchaser  to deposit  any of the above
amounts  relating to the Mortgage  Loan within two Business Days of the Election
to Delay  Foreclosure  or within two Business  Days of the  commencement  of the
Excess Period subject to Section 3.01.

            (e) With respect to any Mortgage  Loan as to which the Purchaser has
made an  Election  to Delay  Foreclosure,  the  Company  may  withdraw  from the
Collateral  Fund from time to time amounts  necessary  to reimburse  the related
Servicer for all related Monthly  Advances and Liquidation  Expenses  thereafter
made by such Servicer in accordance with the Pooling and Servicing Agreement and
the  related  Servicing  Agreement.  To the  extent  that the amount of any such
Liquidation  Expenses is determined by the Company based on estimated costs, and
the actual  costs are  subsequently  determined  to be higher,  the  Company may
withdraw the additional  amount from the Collateral  Fund. In the event that the
Mortgage Loan is brought current by the mortgagor and the foreclosure  action is
discontinued,  the  amounts  so  withdrawn  from the  Collateral  Fund  shall be
redeposited if and to the extent that  reimbursement  therefor from amounts paid
by the  mortgagor  is not  prohibited  pursuant  to the  Pooling  and  Servicing
Agreement  or the related  Servicing  Agreement,  applicable  law or the related
mortgage note. Except as provided in the preceding  sentence,  amounts withdrawn
from the  Collateral  Fund to cover Monthly  Advances and  Liquidation  Expenses
shall not be redeposited  therein or otherwise  reimbursed to the Purchaser.  If
and when any such Mortgage Loan is brought current by the mortgagor, all amounts
remaining  in the  Collateral  Fund in  respect  of such  Mortgage  Loan  (after
adjustment  for  all  permitted   withdrawals  and  deposits  pursuant  to  this
subsection) shall be released to the Purchaser.

            (f) With respect to any Mortgage  Loan as to which the Purchaser has
made an Election to Delay  Foreclosure,  the related  Servicer shall continue to
service the Mortgage Loan in accordance  with its  customary  procedures  (other
than the delay in Commencement of Foreclosure as provided  herein).  If and when
the Purchaser  shall notify the Company that it believes that it is  appropriate
to do so, the related Servicer may proceed with the Commencement of Foreclosure.
In any event,  if the Mortgage  Loan is not brought  current by the mortgagor by
the time the loan becomes 6 months delinquent, the Purchaser's election shall no
longer be effective  and at the  Purchaser's  option,  either (i) the  Purchaser
shall  purchase  the Mortgage  Loan from the related  Trust Estate at a purchase
price equal to the fair market  value as shown on the Current  Appraisal,  to be
paid by (x) applying any balance in the Collateral Fund to such to such purchase
price, and (y) to the extent of any deficiency,  by wire transfer of immediately
available  funds from the  Purchaser  to the  Company for deposit in the related
Certificate  Account;  or (ii)  the  related  Servicer  shall  proceed  with the
Commencement of Foreclosure.

            (g)  Upon  the  occurrence  of a  liquidation  with  respect  to any
Mortgage  Loan as to which the Purchaser  made an Election to Delay  Foreclosure
and as to  which  the  related  Servicer  proceeded  with  the  Commencement  of
Foreclosure in accordance with subsection (f) above, the Company shall calculate
the amount, if any, by which the value shown on the Current  Appraisal  obtained
under  subsection  (c) exceeds the actual  sales price  obtained for the related
Mortgaged Property (net of Liquidation  Expenses and accrued interest related to
the extended  foreclosure  period), and the Company shall withdraw the amount of
such excess from the Collateral  Fund,  shall remit the same to the Trust Estate
and in its  capacity as Master  Servicer  shall apply such amount as  additional
Liquidation  Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After
making such withdrawal,  all amounts remaining in the Collateral Fund in respect
of such  Mortgage  Loan (after  adjustment  for all  permitted  withdrawals  and
deposits pursuant to this Agreement) shall be released to the Purchaser.

            Section 6.03    Purchaser's   Election  to  Commence  Foreclosure
Proceedings.

            (a) In  connection  with any Mortgage  Loan  identified  in a report
under Section 2.01(a)(i)(B),  the Purchaser may elect to instruct the Company to
cause,  to the extent  that the  Company  as Master  Servicer  is  granted  such
authority in the related  Servicing  Agreement,  the related Servicer to proceed
with the Commencement of Foreclosure as soon as practicable.  Such election must
be evidenced by written  notice  received by the Company by 5:00 p.m.,  New York
City time, on the third Business Day following the delivery of such report under
Section 2.01(a)(i).

            (b) Within two Business  Days of making any  Election to  Foreclose,
the Purchaser shall remit to the Company, for deposit in the Collateral Fund, an
amount,  as  calculated  by the  Company,  equal to 125% of the  current  unpaid
principal balance of the Mortgage Loan and three months interest on the Mortgage
Loan at the  applicable  Mortgage  Interest  Rate. If and when any such Mortgage
Loan is brought current by the mortgagor,  all amounts in the Collateral Fund in
respect of such Mortgage Loan (after  adjustment  for all permitted  withdrawals
and deposits  pursuant to this Agreement)  shall be released to the Purchaser if
and to the extent that reimbursement therefor from amounts paid by the mortgagor
is not prohibited pursuant to the Pooling and Servicing Agreement or the related
Servicing  Agreement,  applicable law or the related mortgage note. The terms of
this  Agreement  will no longer apply to the servicing of any Mortgage Loan upon
the  failure of the  Purchaser  to deposit  the above  amounts  relating  to the
Mortgage Loan within two Business  Days of the Election to Foreclose  subject to
Section 3.01.

            (c) With respect to any Mortgage  Loan as to which the Purchaser has
made an Election to Foreclose,  the related  Servicer  shall continue to service
the  Mortgage  Loan in  accordance  with its  customary  procedures  (other than
Commencement of Foreclosure as provided herein).  In connection  therewith,  the
Company shall have the same rights to make  withdrawals for Monthly Advances and
Liquidations  Expenses from the  Collateral  Fund as are provided  under Section
2.02(e), and the Company shall make reimbursements thereto to the limited extent
provided under such subsection in accordance with its customary procedures.  The
Company shall not be required to cause, to the extent that the Company as Master
Servicer is granted  such  authority  in the related  Servicing  Agreement,  the
related Servicer to proceed with the Commencement of Foreclosure if (i) the same
is stayed as a result of the  mortgagor's  bankruptcy or is otherwise  barred by
applicable  law, or to the extent that all legal  conditions  precedent  thereto
have not yet been complied with, or (ii) the Company  believes there is a breach
of representations or warranties by the Company, a Servicer,  or a Seller, which
may result in a repurchase or  substitution  of such Mortgage Loan, or (iii) the
Company or related Servicer  reasonably  believes the Mortgaged  Property may be
contaminated with or affected by hazardous wastes or hazardous  substances (and,
without  limiting  the  related   Servicer's  right  not  to  proceed  with  the
Commencement of Foreclosure, the Company supplies the Purchaser with information
supporting  such  belief).  Any  foreclosure  that  has  been  initiated  may be
discontinued  (x) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage Loan  (including by means of a short payoff  approved by the Purchaser)
or (y) with  notice to the  Purchaser  if the related  Servicer  has reached the
terms of a forbearance  agreement unless  instructed  otherwise by the Purchaser
within two Business Days of such  notification.  Any such  instruction  shall be
based upon a decision that such forbearance  agreement is not in conformity with
reasonable servicing practices.

            (d)  Upon  the  occurrence  of a  liquidation  with  respect  to any
Mortgage Loan as to which the Purchaser  made an Election to Foreclose and as to
which the related  Servicer  proceeded with the  Commencement  of Foreclosure in
accordance with subsection (c) above, the Company shall calculate the amount, if
any, by which the unpaid  principal  balance of the Mortgage Loan at the time of
liquidation  (plus  all  unreimbursed   interest  and  servicing   advances  and
Liquidation  Expenses  in  connection  therewith  other than those paid from the
Collateral  Fund)  exceeds  the actual  sales  price  obtained  for the  related
Mortgaged  Property,  and the Company  shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining in the Collateral Fund (after adjustment for
all  withdrawals  and  deposits  pursuant to  subsection  (c) in respect of such
Mortgage Loan shall be released to the Purchaser.

            Section 6.04      Termination.

            (a) With respect to all Mortgage Loans included in the Trust Estate,
the Purchaser's  right to make any Election to Delay Foreclosure or any Election
to Foreclose and the Company's  obligations  under Section 2.01 shall  terminate
(i) at such time as the Principal  Balance of the Class B Certificates  has been
reduced  to  zero,  (ii) if the  greater  of (x) 43% (or such  lower  or  higher
percentage  that  represents  the  related  Servicer's  actual  historical  loss
experience  with respect to the Mortgage Loans in the related pool as determined
by the Company) of the aggregate  principal  balance of all Mortgage  Loans that
are in  foreclosure or are more than 90 days  delinquent on a contractual  basis
and REO  properties  or (y) the  aggregate  amount  that the  Company  estimates
through the normal servicing  practices of the related Servicer will be required
to be withdrawn  from the  Collateral  Fund with respect to Mortgage Loans as to
which the Purchaser has made an Election to Delay  Foreclosure or an Election to
Foreclosure,  exceeds  (z) the  then-current  principal  balance  of the Class B
Certificates,  (iii) upon any transfer by the  Purchaser of any interest  (other
than the minority interest therein,  but only if the transferee provides written
acknowledgment  to the Company of the Purchaser's  right hereunder and that such
transferee will have no rights  hereunder) in the Class B Certificates  (whether
or not such transfer is registered  under the Pooling and Servicing  Agreement),
including any such transfer in connection with a termination of the Trust Estate
or (iv) upon any breach of the terms of this Agreement by the Purchaser.

            (b)  Except  as  set  forth  in  2.04(a),  this  Agreement  and  the
respective  rights,  obligations and  responsibilities  of the Purchaser and the
Company  hereunder  shall  terminate  upon the  later to occur of (i) the  final
liquidation  of the  last  Mortgage  Loan as to  which  the  Purchaser  made any
Election to Delay Foreclosure or any Election to Foreclose and the withdrawal of
all remaining  amounts in the  Collateral  Fund as provided  herein and (ii) ten
Business Days' notice.  The  Purchaser's  right to make an election  pursuant to
Section 2.02 or Section 2.03 hereof with respect to a particular  Mortgage  Loan
shall terminate if the Purchaser fails to make any deposit required  pursuant to
Section  2.02(d) or 2.03(b) or if the Purchaser  fails to make any other deposit
to the Collateral Fund pursuant to this Agreement.


                                   ARTICLE VII

                       COLLATERAL FUND; SECURITY INTEREST

            Section 7.01      Collateral Fund.

            Upon receipt from the Purchaser of the initial amount required to be
deposited  in the  Collateral  Fund  pursuant to Article  II, the Company  shall
establish and maintain with Bankers Trust Company as a segregated account on its
books and records an account (the  "Collateral  Fund"),  entitled  "Norwest Bank
Minnesota,  National  Association,  as  Master  Servicer,  for  the  benefit  of
registered holders of Norwest Asset Securities Corporation Mortgage Pass-Through
Certificates, Series 1999-16. Amounts held in the Collateral Fund shall continue
to be the  property of the  Purchaser,  subject to the first  priority  security
interest  granted  hereunder  for the benefit of the  Certificateholders,  until
withdrawn from the Collateral Fund pursuant to Section 2.02 or 2.03 hereof.  The
Collateral  Fund shall be an "outside  reserve  fund"  within the meaning of the
REMIC  Provisions,  beneficially  owned by the Purchaser for federal  income tax
purposes.  All income,  gain,  deduction or loss with respect to the  Collateral
Fund shall be that of the Purchaser.  All  distributions  from the Trust Fund to
the  Collateral  Fund shall be treated as  distributed  to the  Purchaser as the
beneficial owner thereof.

            Upon the  termination of this  Agreement and the  liquidation of all
Mortgage  Loans as to  which  the  Purchaser  has  made  any  Election  to Delay
Foreclosure  or any Election to Foreclose  pursuant to Section 2.04 hereof,  the
Company shall distribute or cause to be distributed to the Purchaser all amounts
remaining  in the  Collateral  Fund  (after  adjustment  for  all  deposits  and
permitted  withdrawals  pursuant to this Agreement) together with any investment
earnings  thereon.  In the event the  Purchaser  has made any  Election to Delay
Foreclosure  or any  Election to  Foreclose,  prior to any  distribution  to the
Purchaser  of  all  amounts  remaining  in the  Collateral  Fund,  funds  in the
Collateral Fund shall be applied consistent with the terms of this Agreement.

            Section 7.02      Collateral Fund Permitted Investments.

            The Company shall, at the written direction of the Purchaser, invest
the funds in the Collateral Fund in Collateral Fund Permitted Investments.  Such
direction shall not be changed more frequently than quarterly. In the absence of
any direction,  the Company shall select such investments in accordance with the
definition of Collateral Fund Permitted Investments in its discretion.

            All  income and gain  realized  from any  investment  as well as any
interest  earned on deposits in the  Collateral  Fund (net of any losses on such
investments)  and any  payments of principal  made in respect of any  Collateral
Fund  Permitted  Investment  shall be  deposited  in the  Collateral  Fund  upon
receipt.  All costs and realized losses associated with the purchase and sale of
Collateral  Fund Permitted  Investments  shall be borne by the Purchaser and the
amount  of net  realized  losses  shall be  deposited  by the  Purchaser  in the
Collateral Fund promptly upon realization.  The Company shall  periodically (but
not more  frequently  than monthly)  distribute to the Purchaser upon request an
amount of cash,  to the extent cash is  available  therefore  in the  Collateral
Fund,  equal to the amount by which the balance of the  Collateral  Fund,  after
giving effect to all other  distributions to be made from the Collateral Fund on
such  date,  exceeds  the  Required  Collateral  Fund  Balance.  Any  amounts so
distributed  shall be  released  from the lien  and  security  interest  of this
Agreement.

            Section 7.03      Grant of Security Interest.

            The  Purchaser  hereby  grants to the Company for the benefit of the
Certificateholders under the Pooling and Servicing Agreement a security interest
in and lien on all of the  Purchaser's  right,  title and interest,  whether now
owned or hereafter acquired, in and to: (1) the Collateral Fund, (2) all amounts
deposited in the Collateral  Fund and Collateral  Fund Permitted  Investments in
which such  amounts are  invested  (and the  distributions  and proceeds of such
investments)  and (3) all cash and  non-cash  proceeds of any of the  foregoing,
including  proceeds of the  voluntary  conversion  thereof (all of the foregoing
collectively, the "Collateral").

            The Purchaser  acknowledges the lien on and the security interest in
the Collateral for the benefit of the  Certificateholders.  The Purchaser  shall
take all actions  requested  by the Company as may be  reasonably  necessary  to
perfect the security interest created under this Agreement in the Collateral and
cause it to be prior to all other  security  interests and liens,  including the
execution  and  delivery  to the  Company  for filing of  appropriate  financing
statements in accordance with applicable law. The Company shall file appropriate
continuation  statements,  or  appoint  an  agent  on its  behalf  to file  such
statements, in accordance with applicable law.

            Section 3.04      Collateral Shortfalls.

            In the event that amounts on deposit in the  Collateral  Fund at any
time are  insufficient  to cover any  withdrawals  therefrom that the Company is
then entitled to make  hereunder,  the Purchaser  shall be obligated to pay such
amounts to the Company immediately upon demand. Such obligation shall constitute
a general corporate obligation of the Purchaser. The failure to pay such amounts
within two Business Days of such demand (except for amounts to cover interest on
a Mortgage  Loan  pursuant  to Sections  2.02(d)  and 2.03 (b)),  shall cause an
immediate  termination  of the  Purchaser's  right to make any Election to Delay
Foreclosure  or Election to Foreclose and the Company's  obligations  under this
Agreement  with  respect to all  Mortgage  Loans to which  such  insufficiencies
relate, without the necessity of any further notice or demand on the part of the
Company.


                                   ARTICLE VIII

                            MISCELLANEOUS PROVISIONS

            Section 8.01      Amendment.

            This  Agreement  may be amended from time to time by the Company and
the Purchaser by written agreement signed by the Company and the Purchaser.

            Section 8.02      Counterparts.

            This  Agreement  may be  executed  simultaneously  in any  number of
counterparts,  each of which counterparts shall be deemed to be an original, and
such counterparts shall constitute but one and the same instrument.

            Section 8.03      Governing Law.

            This Agreement shall be construed in accordance with the laws of the
State  of New York and the  obligations,  rights  and  remedies  of the  parties
hereunder shall be determined in accordance with such laws.

            Section 8.04      Notices.

            All demands,  notices and direction hereunder shall be in writing or
by telecopy and shall be deemed effective upon receipt to:

            (a)   in the case of the Company,

                  Norwest Bank Minnesota, National Association
                  7485 New Horizon Way
                  Frederick, MD 21703

                  Attention:  Vice President, Master Servicing
                  Phone:      301-696-7800
                  Fax:        301-815-6365

            (b)   in the case of the Purchaser,

                  -----------------------------
                  -----------------------------
                  -----------------------------
                  -----------------------------
                  Attention: __________

            Section 8.05      Severability of Provisions.

            If any one or more of the covenants,  agreements, provision or terms
of this Agreement shall be for any reason whatsoever, including regulatory, held
invalid, then such covenants, agreements,  provisions or terms of this Agreement
and  shall  in no way  affect  the  validity  or  enforceability  of  the  other
provisions of this Agreement.

            Section 8.06      Successors and Assigns.

            The provisions of this Agreement  shall be binding upon and inure to
the benefit of the respective  successors and assigns of the parties hereto, and
all such  provisions  shall  inure  to the  benefit  of the  Certificateholders;
provided,  however,  that the rights under this Agreement  cannot be assigned by
the Purchaser without the consent of the Company.

            Section 8.07      Article and Section Headings.

            The article  and  section  headings  herein are for  convenience  of
reference only and shall not limit or otherwise affect the meaning hereof.

            Section 8.08      Confidentiality.

            The Purchaser  agrees that all information  supplied by or on behalf
of the Company pursuant to Sections 2.01 or 2.02,  including  individual account
information,  is the  property of the Company and the  Purchaser  agrees to hold
such information confidential and not to disclose such information.

            Each party hereto agrees that neither it, nor any officer, director,
employee,  affiliate or independent  contractor acting at such party's direction
will  disclose  the terms of  Section  4.09 of this  Agreement  to any person or
entity  other  than such  party's  legal  counsel  except  pursuant  to a final,
non-appealable  order of court,  the pendency of such order the other party will
have  received  notice of at least five business days prior to the date thereof,
or pursuant to the other party's prior express written consent.

            Section 8.09      Indemnification.

            The Purchaser agrees to indemnify and hold harmless the Company, the
Seller, and each Servicer and each person who controls the Company,  the Seller,
or a Servicer and each of their respective officers,  directors,  affiliates and
agents acting at the  Company's,  the Seller's,  or a Servicer's  direction (the
"Indemnified   Parties")  against  any  and  all  losses,   claims,  damages  or
liabilities  to which  they may be  subject,  insofar  as such  losses,  claims,
damages or  liabilities  (or  actions in respect  thereof)  arise out of, or are
based upon, actions taken by, or actions not taken by, the Company,  the Seller,
or a Servicer,  or on their behalf,  in accordance  with the  provisions of this
Agreement and (i) which actions conflict with the Company's,  the Seller's, or a
Servicer's  obligations under the Pooling and Servicing Agreement or the related
Servicing Agreement, or (ii) give rise to securities law liability under federal
or state securities laws with respect to the Certificates.  The Purchaser hereby
agrees to reimburse the  Indemnified  Parties for the reasonable  legal or other
expenses incurred by them in connection with investigating or defending any such
loss, claim, damage, liability or action. The indemnification obligations of the
Purchaser  hereunder  shall  survive  the  termination  or  expiration  of  this
Agreement.

          IN WITNESS WHEREOF,  the Company and the Purchaser have caused their
names  to  be  signed  hereto  by  their  respective   officers  thereunto  duly
authorized, all as of the day and year first above written.



                                            Norwest Bank Minnesota, National
                                                      Association



                                        By:____________________________________
                                        Name:__________________________________
                                        Title: ________________________________



                                        _______________________________________



                                        By:____________________________________
                                        Name:__________________________________
                                        Title: ________________________________






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