NORWEST ASSET SEC CORP MORT PASS THR CERT SER 1999-12 TRUST
8-K, 1999-05-21
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: April 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 April 28, 1999, Norwest Asset Securities Corporation,  a Delaware
corporation (the "Registrant"),  sold Mortgage Pass-Through Certificates, Series
1999-12, Class A-1, Class A-2, Class A-3, Class A-4, Class A-R, Class B-1, Class
B-2 and Class B-3 (the  "Offered  Certificates"),  having an aggregate  original
principal  balance of  $196,709,100.00.  The  Offered  Certificates  were issued
pursuant to a Pooling and Servicing Agreement, dated as of April 28, 1999, among
the Registrant, Norwest Bank Minnesota, National Association, as master servicer
(the "Master  Servicer" or "Norwest  Bank"),  United States Trust Company of New
York, as trustee,  and First Union  National Bank, as trust  administrator  (the
"Agreement"),  a  copy  of  which  is  filed  as  an  exhibit  hereto.  Mortgage
Pass-Through  Certificates,  Series 1999-12, Class A-PO Certificates,  having an
aggregate  initial  principal  balance of $2,320,384.62 and Class B-4, Class B-5
and Class B-6  Certificates,  having an aggregate  initial  principal balance of
$1,000,491.13  (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  98.34% 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,
originated in connection  with the relocation of employees by various  corporate
employers that participated in the relocation program of Norwest Mortgage,  Inc.
and of employees of various non-participant  employees.  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 a REMIC for
federal income tax purposes (the "REMIC").  The Class A-1, Class A-2, Class A-3,
Class A-4, 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 REMIC and
the Class A-R  Certificate  will be treated as the  "residual  interest"  in the
REMIC.



<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 April 28,  1999,  among  Norwest  Asset
                                      Securities   Corporation,   Norwest   Bank
                                      Minnesota,  National  Association,  United
                                      States  Trust  Company  of  New  York,  as
                                      trustee, and First Union National Bank, as
                                      trust administrator.





<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

April 28, 1999
                                    /s/ ALAN MCKENNEY
                                    ------------------------------------
                                    Alan McKenney
                                    Vice President

<PAGE>




                                INDEX TO EXHIBITS


                                                              Paper (P) or
Exhibit No.              Description                          Electronic (E)
- -----------              -----------                          --------------

  (EX-4)                 Pooling      and      Servicing            E
                         Agreement,  dated  as of April
                         28, 1999 among  Norwest  Asset
                         Securities        Corporation,
                         Norwest    Bank     Minnesota,
                         National  Association,  United
                         States  Trust  Company  of New
                         York,  as  trustee  and  First
                         Union  National Bank, as trust
                         administrator.











                      NORWEST ASSET SECURITIES CORPORATION
                                    (Seller)


                                       and


                 NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION
                                (Master Servicer)


                     UNITED STATES TRUST COMPANY OF NEW YORK
                                    (Trustee)


                                       and


                            FIRST UNION NATIONAL BANK
                              (Trust Administrator)


                         POOLING AND SERVICING AGREEMENT


                           Dated as of April 28, 1999


                                $200,029,975.75


                       Mortgage Pass-Through Certificates
                                 Series 1999-12


<PAGE>


                                TABLE OF CONTENTS

                                                                           PAGE


                                    ARTICLE I

                                   DEFINITIONS

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


                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01  Conveyance of Mortgage Loans..................................
Section 2.02  Acceptance by Trust Administrator.............................
Section 2.03  Representations and Warranties of the Master Servicer
               and the Seller...............................................
Section 2.04  Execution and Delivery of Certificates........................
Section 2.05  Designation of Certificates; Designation of Startup Day
               and Latest Possible Maturity Date............................


                                   ARTICLE III

                 administration of the trust estate. servicing
                              of the mortgage loans

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


                                   ARTICLE IV

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

Section 4.01  Distributions.................................................
Section 4.02  Allocation of Realized Losses.................................
Section 4.03  Paying Agent..................................................
Section 4.04  Statements to Certificateholders; Report to the Trust
               Administrator and the Seller.................................
Section 4.05  Reports to Mortgagors and the Internal Revenue Service........
Section 4.06  Calculation of Amounts; Binding Effect of Interpretations
               and Actions of Master Servicer...............................


                                    ARTICLE V

                                THE CERTIFICATES

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


                                   ARTICLE VI

                       THE SELLER AND THE MASTER SERVICER

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


                                   ARTICLE VII

                                     DEFAULT

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


                                  ARTICLE VIII

              CONCERNING THE TRUSTEE AND THE TRUST ADMINISTRATOR

Section 8.01  Duties of Trustee and the Trust Administrator.................
Section 8.02  Certain Matters Affecting the Trustee and the Trust
               Administrator................................................
Section 8.03  Neither Trustee nor Trust Administrator Required to Make
               Investigation................................................
Section 8.04  Neither Trustee nor Trust Administrator Liable for
               Certificates or Mortgage Loans...............................
Section 8.05  Trustee and Trust Administrator May Own Certificates..........
Section 8.06  The Master Servicer to Pay Fees and Expenses..................
Section 8.07  Eligibility Requirements......................................
Section 8.08  Resignation and Removal.......................................
Section 8.09  Successor.....................................................
Section 8.10  Merger or Consolidation.......................................
Section 8.11  Authenticating Agent..........................................
Section 8.12  Separate Trustees and Co-Trustees.............................
Section 8.13  Appointment of Custodians.....................................
Section 8.14  Tax Matters; Compliance with REMIC Provisions.................
Section 8.15  Monthly Advances..............................................
Section 8.16  Trustee Covenants Concerning Year 2000 Compliance.............
Section 8.17  Trust Administrator Covenants Concerning Year 2000
               Compliance...................................................


                                   ARTICLE IX

                                   TERMINATION

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


                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

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


                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

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



<PAGE>



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-PO    -     Form of Face of Class A-PO Certificate
EXHIBIT A-R     -     Form of Face of Class A-R 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 1999-12 Certificates
EXHIBIT D       -     Reserved
EXHIBIT E       -     Custodial Agreement
EXHIBIT F-1     -     Schedule of Mortgage Loans Serviced by Norwest Mortgage
EXHIBIT F-2     -     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 [B-1] [B-2] [B-3] Certificates)
EXHIBIT L       -     Servicing Agreements
EXHIBIT M       -     Form of Special Servicing Agreement
SCHEDULE I      -     Applicable Unscheduled Principal Receipt Period



<PAGE>


            This  Pooling and  Servicing  Agreement,  dated as of April 28, 1999
executed  by NORWEST  ASSET  SECURITIES  CORPORATION,  as Seller,  NORWEST  BANK
MINNESOTA, NATIONAL ASSOCIATION, as Master Servicer, UNITED STATES TRUST COMPANY
OF NEW YORK, as Trustee and FIRST UNION NATIONAL BANK, as Trust Administrator.

                         W I T N E S S E T H   T H A T:

            In  consideration of the mutual  agreements  herein  contained,  the
Seller, the Master Servicer,  the Trustee and the Trust  Administrator  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.

            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) 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) 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
Trust  Administrator  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 Trust Administrator 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
$100,000.00  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.

            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 and Class A-4 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 Trust Administrator.

            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-PO
Certificates or Class A-R 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-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).  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) 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).

            CLASS A LOSS DENOMINATOR:  As to any  Determination  Date, an amount
equal to the Class A Non-PO Principal Balance.

            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 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 Trust  Administrator  in respect of
                  such defective Mortgage Loan.

            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, will be equal to the amount distributed pursuant to Paragraph third clause
(A) of Section 4.01(a).

            CLASS A  PASS-THROUGH  RATE: As to the Class A-1,  Class A-2,  Class
A-3, Class A-4 and Class A-R Certificates,  the Class A Fixed 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 April 2004, 100%. As to any Distribution Date
subsequent to April 2004 to and including the  Distribution  Date in April 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 April 2005 to and including the Distribution  Date in April 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 April
2006  to and  including  the  Distribution  Date  in  April  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 April
2007  to and  including  the  Distribution  Date  in  April  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 April
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 April 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
May 2004 and April 2005 (2) 35% of the  Original  Class B  Principal  Balance if
such Distribution Date occurs between and including May 2005 and April 2006, (3)
40% of the Original Class B Principal  Balance if such  Distribution Date occurs
between and including May 2006 and April 2007,  (4) 45% of the Original  Class B
Principal  Balance if such  Distribution  Date occurs  between and including May
2007 and April 2008,  and (5) 50% of the Original  Class B Principal  Balance if
such  Distribution  Date occurs  during or after May 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 Trust  Administrator,  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-PO
Certificates and Class A-R 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 on prior
Distribution Dates pursuant to Paragraph second of Section 4.01(a).

            CLASS A-1 CERTIFICATE:  Any one of the Certificates  executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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-PO CERTIFICATE:  Any one of the Certificates executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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)  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). 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 Trust
                  Administrator in respect of such defective Mortgage Loan.

            CLASS  A-R  CERTIFICATE:  The  Certificate  executed  by  the  Trust
Administrator and authenticated by the Trust Administrator 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  B 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,  6.250%
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
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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).

            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).

            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 Trust  Administrator  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)
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).

            CLASS B-2 CERTIFICATE:  Any one of the Certificates  executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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).

            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).

            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 Trust  Administrator  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) 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).

            CLASS B-3 CERTIFICATE:  Any one of the Certificates  executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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).

            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).

            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 Trust  Administrator  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)
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).

            CLASS B-4 CERTIFICATE:  Any one of the Certificates  executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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).

            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).

            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 Trust  Administrator  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)
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).

            CLASS B-5 CERTIFICATE:  Any one of the Certificates  executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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).

            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 Trust  Administrator  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)
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).

            CLASS B-6 CERTIFICATE:  Any one of the Certificates  executed by the
Trust  Administrator  and  authenticated  by  the  Trust  Administrator  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).

            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).

            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 Trust  Administrator  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)
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).

            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  Trust
Administrator  or the  Trustee,  as the case may be, at which at any  particular
time its corporate  trust business  shall be  administered,  which office,  with
respect  to the  Trust  Administrator,  at the  date  of the  execution  of this
instrument is located at 230 South Tryon Street, Charlotte, North Carolina 28288
and with respect to the Trustee,  at the date of execution of this instrument is
located at 114 West 47th Street, New York, New York 10036.

            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) 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) 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 Trust  Administrator,  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 Trust Administrator,  and thereafter the
Custodian,  if any, hereafter appointed by the Trust  Administrator  pursuant to
Section 8.13, or its successor in interest  under the Custodial  Agreement.  The
Custodian  may (but need not) be the  Trustee,  the Trust  Administrator  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.

            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  representing  the principal  portion of the Cut-Off Date Aggregate
Principal Balance evidenced by such Certificate.

            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 6.250%.

            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 Trust Administrator,  such that the Trust Administrator, 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 a REMIC or
result in the imposition of any federal tax on the 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 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 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 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-PO,  Class A-R, Class
B-1, Class B-2, Class B-3,  Class B-4, Class B-5 and Class B-6  Certificates  is
May 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.

            FITCH:  Fitch IBCA, Inc. or its successor in interest.

            FIXED  RETAINED  YIELD:  The fixed  percentage  of  interest on each
Mortgage Loan with a Mortgage  Interest Rate greater than the sum of (a) 6.250%,
(b) the  applicable  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) 6.250%, (ii) the applicable 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  $4,000,599.52  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,  trust  administrator,  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-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). 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).

            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  Trust  Administrator
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;  PROVIDED, HOWEVER, that with respect to
certain  Mortgage Loans serviced by GMAC Mortgage  Corporation,  the denominator
will be the sale price.

            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.

            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 April 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 Trust  Administrator  on the Closing Date as part of the Trust Estate and
attached hereto as Exhibits F-1 and F-2, 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 applicable Servicing Fee Rate;

            (xiv)  the Master Servicing Fee Rate;

            (xv)   Fixed Retained Yield, if applicable; and

            (xvi)  for each Exhibit F-2 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 Trust  Administrator 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 applicable  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 6.250%.

            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  Trust
Administrator,  as the case may be, and which the Servicer,  the Master Servicer
or the Trust  Administrator  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 Trust Administrator (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 Trust  Administrator or, in the case of a Master Servicer or a
Trust  Administrator  determination,  an  Officer's  Certificate  of the  Master
Servicer  or the Trust  Administrator  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(f).

            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  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 or the Trust Administrator, as the case may be.

            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,  or acceptable to the
Trust   Administrator   if  such  opinion  is  to  be  delivered  to  the  Trust
Administrator;  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 and Class
A-R Certificates, as set forth in Section 11.06.

            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  Trust
Administrator  (or the  Custodian,  if any) for each Mortgage Loan that contains
the  documents  specified in the  Servicing  Agreements  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.

            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  or  the  Trust
Administrator. 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,  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 B  Certificate,  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 Trust Administrator 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 Trust  Administrator  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 Trust Administrator,  as the case may be and (z) have not
been determined by the Master Servicer,  such Servicer or Trust Administrator 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 Trust  Administrator  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 Trust  Administrator 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   Trust
                  Administrator  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
                  Trust Administrator;

            (c)   those  portions of each  payment of  interest on a  particular
                  Mortgage Loan which represent (i) the Fixed Retained Yield, if
                  any,  (ii) the  applicable  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.

            PREPAYMENT  SHIFT  PERCENTAGE:  As to any  Distribution  Date,  the
percentage indicated below:

                                                      Prepayment Shift
           Distribution Date Occurring In                Percentage
           ------------------------------                ----------

     May 1999 through April 2004................              0%
     May 2004 through April 2005................             30%
     May 2005 through April 2006................             40%
     May 2006 through April 2007................             60%
     May 2007 through April 2008................             80%
     May 2008 and thereafter....................            100%

            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) 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,  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-PO  Certificates),  the
Original  Principal  Balance  of such  Class  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) and (ii) as a result
of a Principal  Adjustment 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  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.

            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) 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.

            PRIORITY AMOUNT:  For any  Distribution  Date, the lesser of (i) the
Principal  Balance  of the  Class A-4  Certificates  and (ii) the sum of (A) the
product of (1) the Priority  Percentage,  (2) the Shift  Percentage  and (3) the
Scheduled  Principal Amount and (B) the product of (1) the Priority  Percentage,
(2) the Prepayment Shift Percentage and (3) the Unscheduled
Principal Amount.

            PRIORITY  PERCENTAGE:  The  Principal  Balance  of  the  Class  A-4
Certificates divided by the Pool Balance (Non-PO Portion).

            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.

            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 Fitch and
S&P. The Rating Agency for the Class B-1,  Class B-2,  Class B-3,  Class B-4 and
Class B-5  Certificates is Fitch. 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,  the Trust Administrator and the Master Servicer.
References  herein to the highest  short-term rating category of a Rating Agency
shall mean F-1+ in the case of Fitch, A-1+ in the case of S&P 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.

            RELEVANT ANNIVERSARY:  See "BANKRUPTCY LOSS AMOUNT."

            REMIC: A "real estate  mortgage  investment  conduit" as defined in
Code  Section  860D.  "The  REMIC"  means  the REMIC  constituted  by the Trust
Estate.

            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 or the
Trust Administrator,  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  or  the  Trust
Administrator,  as the case may be, 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.

            S&P:  Standard & Poor's, or its successor in interest.

            SCHEDULED  PRINCIPAL AMOUNT:  The sum for each outstanding  Mortgage
Loan (including each defaulted Mortgage Loan, other than a Liquidated Loan, with
respect to which the related  Mortgaged  Property has been acquired by the Trust
Estate) of the product of (A) the Non-PO Fraction for such Mortgage Loan and (B)
the sum of the amounts  described in clauses y(i) and y(iv) of the definition of
Class A  Non-PO  Optimal  Principal  Amount,  but  without  such  amounts  being
multiplied by the Class A Percentage.

            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.

            SERVICER  MORTGAGE  LOAN FILE:  As defined in each of the Servicing
Agreements.

            SERVICERS:   Each  of  Norwest   Mortgage,   Inc.,  The  Huntington
Mortgage Company, GMAC Mortgage  Corporation,  First Union Mortgage Corp., Bank
of America,  NT&SA,  Star Bank and National City  Mortgage  Company as 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.

            SHIFT  PERCENTAGE:  As to any  Distribution  Date,  the  percentage
indicated below:


                     Distribution Date                           Shift
                       Occurring In                           Percentage
                       ------------                           ----------

     May 1999 through April 2004........................             0%
     May 2004 and thereafter............................           100%

            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:

            (A)   normal wear and tear;

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

            (C)   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  $2,921,416.42  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 Trust Administrator. 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.

            TRUST  ADMINISTRATOR:  First Union National Bank, a national banking
association with its principal office located in Charlotte,  North Carolina,  or
any successor trust administrator 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 Trust  Administrator,  on behalf 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.

            TRUSTEE:   United   States  Trust  Company  of  New  York,  or  any
successor trustee appointed as herein provided.

            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 AMOUNT: The sum for each outstanding Mortgage
Loan (including each defaulted Mortgage Loan, other than a Liquidated Loan, with
respect to which the related  Mortgaged  Property has been acquired by the Trust
Estate) of the product of (A) the Non-PO Fraction for such Mortgage Loan and (B)
the sum of the amounts  described in clauses y(ii) and y(iii) of the  definition
of Class A Non-PO  Optimal  Principal  Amount,  but without such  amounts  being
multiplied by the Class A Prepayment Percentage.

            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.

            U.S. PERSON:  As defined in Section 4.01(f).

            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 Holders of each Class of
Certificates will collectively be entitled to the then applicable  percentage of
the aggregate Voting Interest represented by all Certificates equal to the ratio
obtained by dividing the Principal Balance of such Class by the sum of the Class
A Principal Balance and the Class B 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 and the Trust  Administrator.  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  and  the  Trust
Administrator,  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  or the  Trust
Administrator 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,  the  Trust
Administrator and the  Authenticating  Agent) shall be proved by the Certificate
Register,  and neither the Trustee, the Trust Administrator,  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 Trust Administrator,  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  Trust
Administrator,  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 Trust
Administrator 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 Trust  Administrator  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 Trust Administrator 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 Trust Administrator within one (1)
year  following  the  Closing  Date any  original  Mortgage or  assignment  of a
Mortgage not delivered to the Trust Administrator 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 Trust  Administrator  the assignment of the Mortgage Loan
from the Seller to the Trust  Administrator  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 Trust Administrator and the Trust Administrator shall within
five Business Days (or such other reasonable period of time mutually agreed upon
by the  Master  Servicer  and the Trust  Administrator)  of its  receipt of such
notice deliver each previously unrecorded assignment to the related Servicer for
recordation.

            SECTION 2.02      ACCEPTANCE BY TRUST ADMINISTRATOR.

            The Trust  Administrator,  on behalf  of 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 Trust Administrator 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  Trust
Administrator  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  Trust   Administrator   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 Trust  Administrator
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 Trust  Administrator'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 Trust Administrator 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 Trust  Administrator  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 Trust
Administrator  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
Trust  Administrator 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,  the Trust  Administrator  on behalf of the  Trustee and the
Trustee  on  behalf  of  the  Certificateholders.   The  failure  of  the  Trust
Administrator 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 Trust  Administrator  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  Trust
Administrator  appoints a Custodian to hold the Mortgage  Notes,  the Mortgages,
the assignments  and other  documents  related to the Mortgage Loans received by
the Trust  Administrator,  as agent for 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 and the Trust Administrator 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,   the  Trust  Administrator  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 Trust Administrator or the Custodian.

            (b)   The  Seller hereby  represents and warrants to the Trustee and
the Trust  Administrator 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 Trust  Administrator
      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 Trust  Administrator  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 Trust Administrator 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 Trust  Administrator,  on
      behalf of 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 Trust  Administrator,  on behalf 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 Trust Administrator 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 Trust Administrator and shall inure to the benefit of
the  Trust  Administrator,  on  behalf  of  the  Trustee,   notwithstanding  any
restrictive or qualified endorsement or assignment.

            (c)   Upon discovery by either the Seller, the Master Servicer,  the
Trust   Administrator,   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,  the Trust  Administrator  on behalf of the Trustee,  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 Trust  Administrator  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, has executed and delivered to or upon the order
of the Seller, in exchange for the Mortgage Loans together with all other assets
included  in the  definition  of  "Trust  Estate,"  receipt  of which is  hereby
acknowledged,  Certificates in authorized denominations which 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  Certificate)  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 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 the REMIC within the meaning of Code Section 860G(a)(9).
The "latest possible maturity date" of the regular interests in the REMIC is May
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  Trust  Administrator,  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
the Trust  Estate 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 Trust  Administrator or
      any  Servicer  for Periodic  Advances  made by the Master  Servicer or the
      Trust  Administrator  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 Trust
      Administrator 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 Trust
      Administrator  (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   TRUST
                              ADMINISTRATOR.

            (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 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 Trust Administrator shall, to the extent required by Section 8.15, make
such Periodic  Advance to the extent  provided  hereby,  provided that the Trust
Administrator  has previously  received the  certificate of the Master  Servicer
described in the following  sentence.  The Master  Servicer shall certify to the
Trust Administrator 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 Trust  Administrator  or Master Servicer is
required  to  advance  hereunder  and  (iv)  whether  the  Master  Servicer  has
determined  that  it  reasonably  believes  that  such  Periodic  Advance  is  a
Nonrecoverable  Advance.  Amounts advanced by the Trust  Administrator or Master
Servicer  shall  be  deposited  in  the  Certificate   Account  on  the  related
Distribution Date.  Notwithstanding  the foregoing,  neither the Master Servicer
nor the Trust Administrator will be obligated to make a Periodic Advance that it
reasonably believes to be a Nonrecoverable  Advance. The Trust Administrator 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 Trust
Administrator   that  such   failure  has   occurred.   Upon   receipt  of  such
certification,  the Trust  Administrator  shall advance such funds and take such
steps as are necessary to pay such taxes or insurance premiums.

            (c)   The Master Servicer and the Trust  Administrator 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 Trust  Administrator 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 Trust Administrator,  withdraw from the Certificate Account and remit to the
Trust  Administrator any amounts to which the Trust Administrator 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 Trust  Administrator 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      TRUST ADMINISTRATOR 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  Trust  Administrator  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 Trust
Administrator.  The Trust Administrator  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 Trust  Administrator and the Trust  Administrator  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 Trust  Administrator 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 Trust Administrator
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 Trust Administrator to the Master Servicer or such Servicer,  as
appropriate.

            Upon written certification of the Master Servicer or the Servicer of
a Mortgage Loan, the Trust Administrator 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 Trust  Administrator  and a  statement  as to the
reason such  documents or pleadings  are  required  and that the  execution  and
delivery  thereof by the Trust  Administrator  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 AND TRUST ADMINISTRATOR;
                              ANNUAL COMPLIANCE STATEMENTS.

            (a)   Not  later  than 15 days  after each  Distribution  Date,  the
Master  Servicer  shall  deliver to the  Trustee and the Trust  Administrator  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 Trust
Administrator  to any  Certificateholder  upon written  request,  provided  such
statement is delivered, or caused to be delivered, by the Master Servicer to the
Trust Administrator.

            (b)   The Master Servicer shall deliver to the Trustee and the Trust
Administrator  on or before  April 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 Trust Administrator to any  Certificateholder  upon written request provided
such certificate is delivered, or caused to be delivered, by the Master Servicer
to the Trust Administrator.

            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 Trust  Administrator  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 Trust  Administrator shall have
no  further  responsibility  with  regard to such  Owner  Mortgage  Loan File or
Servicer  Mortgage  Loan  File.  Neither  the Trust  Administrator,  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 and the
Trust Administrator  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  and the Trust
Administrator 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 and the Trust  Administrator  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 and the Trust  Administrator 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,  either the Trustee or the Trust Administrator
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,  the  Trustee,  or the  Trust  Administrator,  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  (including
the  obligation  to maintain an Errors and Omissions  Policy and Fidelity  Bond)
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  Trust  Administrator'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  Trust  Estate  of REMIC  status  for  federal  income  tax
purposes  or (iii)  the  imposition  of any  Prohibited  Transaction  Tax or any
federal taxes on the 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 Trust  Administrator  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 Trust  Administrator  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 and the Trust
Administrator  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 Trust Administrator on behalf of 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 Trust  Administrator the  certification  required by Section 3.04
and the Trust Administrator 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 Trust Administrator  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 Trust Administrator shall have no further  responsibility with regard to
such Owner Mortgage Loan File or Servicer Mortgage Loan File.  Neither the Trust
Administrator,  the Master  Servicer nor any  Servicer,  acting on behalf of the
Trust  Administrator,  shall  provide  financing  from the  Trust  Estate to any
purchaser of a Mortgage Loan.

            The Master Servicer,  on behalf of the Trust  Administrator,  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 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 Trust Administrator is obligated to make an advance pursuant to Section 3.03
and (ii) the Trust Administrator 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 Trust  Administrator  shall
recommend  to the Trustee the  termination  of the Norwest  Servicing  Agreement
without the recommendation of the Master Servicer and upon such  recommendation,
the Trustee shall terminate the Norwest Servicing Agreement. The Master Servicer
shall indemnify the Trustee and the Trust  Administrator  and hold each 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 or the Trust Administrator in connection with termination of
such Servicing  Agreement at the direction of the Master Servicer.  In addition,
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 attorney's fees) arising out of, or assessed against the
Trustee in connection with the termination of the Norwest Servicing Agreement as
provided  in the second  preceding  sentence.  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  Trust
Administrator, 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)   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
Class A Interest Accrual Amount with respect to such Distribution Date;

            second, to the Classes of Class A Certificates, pro rata, based upon
their respective Class A Unpaid Interest  Shortfalls,  in an aggregate amount up
to the Aggregate Class A Unpaid Interest Shortfall;

            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.

            Notwithstanding  the foregoing,  after the Principal  Balance of any
Class  (other than the Class A-R  Certificate)  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-R
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-PO
Certificates)  and any  Class of  Class B  Certificates  with a lower  numerical
designation pro rata based on their outstanding Principal Balances.

            (b)   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:

            first,  to the Class A-4  Certificates,  up to the Priority  Amount
for such Distribution Date;

            second,  sequentially,  to the Class A-R,  Class A-1,  Class A-2 and
Class A-3 Certificates,  in that order, until the Principal Balance of each such
Class has been reduced to zero; and

            third, to the Class A-4 Certificates, without regard to the Priority
Amount for such Distribution  Date, until the Principal Balance thereof has been
reduced to zero;

            (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)   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 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(e)  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-R Certificate) or the Principal  Balance of any Class of
Class B Certificates  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 Trust  Administrator.  The Trust  Administrator  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 Trust Administrator 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).

            (f)   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(f)  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 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.

            SECTION 4.03      PAYING AGENT.

            (a)   The Master Servicer hereby appoints the Trust Administrator 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
Trust  Administrator  to  execute  and  deliver  to the Trust  Administrator  an
instrument in which such Paying Agent agrees with the Trust  Administrator  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 Trust  Administrator  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 Trust Administrator, forthwith pay to the Trust
      Administrator 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 Trust Administrator,  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
                              TRUST ADMINISTRATOR AND THE SELLER.

            Concurrently with each distribution pursuant to Section 4.01(e), 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) 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 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 Trust Administrator  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)     the Class A-PO Deferred Amount, if any; and

            (xxiv) 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 Trust  Administrator,
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  Certificate)  with a $1,000  Denomination,  and as a
dollar amount per Class A-R Certificate 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
Trust  Administrator,  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 Trust
Administrator  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.



<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 and
Class A-R Certificates,  integral multiples of $1,000 in excess thereof (except,
if necessary, for one Certificate of each Class (other than Class A-PO and Class
A-R  Certificates)  that evidences one Single  Certificate  plus such additional
principal  portion 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-PO,  A-R, 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 Trust  Administrator  to or upon the order of the Seller upon receipt by the
Trust Administrator or the Custodian of the documents specified in Section 2.01.
The  aggregate   principal  portion  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 Trust  Administrator  by any  Responsible
Officer  thereof.  Certificates  bearing the manual or facsimile  signatures  of
individuals who were at any time the proper officers of the Trust  Administrator
shall bind the Trust Administrator  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 Trust Administrator,  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 Trust Administrator 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 Trust Administrator at the Corporate Trust Office.

            SECTION 5.02      REGISTRATION OF CERTIFICATES.

            (a)   The Trust  Administrator  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 Trust  Administrator shall provide for the
registration of  Certificates  and of transfers and exchanges of Certificates as
herein  provided.  The Trust  Administrator  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 Trust  Administrator  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 Trust  Administrator  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 Trust  Administrator)  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 Trust  Administrator  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  Trust  Administrator  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 Trust  Administrator 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
Trust Administrator 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 Trust Administrator, the
Trustee,  the Seller or the Master  Servicer,  and (ii) the Trust  Administrator
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 Trust  Administrator the facts surrounding such
transfer,  which  investment  letter  shall  not  be an  expense  of  the  Trust
Administrator,  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  Trust
Administrator, 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  Trust  Administrator  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-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 Trust  Administrator  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 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 Trust  Administrator,  the  Trustee,  the
Seller or the Master  Servicer or (b) with  respect to the Class B  Certificates
only, if such transferee is an insurance  company,  (A) the source of funds used
to purchase the 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 B  Certificates  are
covered by Sections I and III of PTE 95-60 or (ii) in the case of any such 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 Trust
Administrator  and the Seller to the effect that the purchase or holding of such
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 Trust  Administrator,  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 Trust  Administrator,  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 Trust Administrator,  the Trustee,
the Seller or the Master Servicer. The 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  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
Certificate  in  connection  with the conduct of a trade or business  within the
United States and has furnished the transferor and the Trust  Administrator 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 Trust Administrator an opinion
of a  nationally  recognized  tax counsel to the effect that the transfer of the
Class A-R 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  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 Trust  Administrator  shall not
execute,  and shall not  authenticate  (or  cause  the  Authenticating  Agent to
authenticate)  and deliver,  a new Class A-R  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  Trust
Administrator shall accept a surrender for transfer or registration of transfer,
or register the transfer of, the Class A-R  Certificate,  unless the  transferor
shall have provided to the Trust  Administrator  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
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  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  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  Certificate  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  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
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 the Class A-R  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 Certificate, and (ii) the Master Servicer agrees to furnish to the
Internal  Revenue  Service and to any transferor of the Class A-R 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 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  Trust
Administrator  or the  Authenticating  Agent, or the Trust  Administrator 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  Trust
Administrator 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 Trust Administrator or the Authenticating Agent that such Certificate has
been acquired by a bona fide purchaser,  the Trust  Administrator  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 Trust  Administrator  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 Trust  Administrator  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 Trust Administrator,
the Certificate Registrar and any agent of the Seller, the Master Servicer,  the
Trustee,  the Trust  Administrator  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 Trust Administrator,  the Certificate  Registrar nor
any  agent  of  the  Seller,  the  Master  Servicer,   the  Trustee,  the  Trust
Administrator  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  Trust  Administrator  is not  acting  as  Certificate
Registrar,  the Certificate  Registrar shall furnish or cause to be furnished to
the  Trust  Administrator,  within  15 days  after  receipt  by the  Certificate
Registrar of a request by the Trust  Administrator  in writing,  a list, in such
form as the  Trust  Administrator  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 Trust Administrator,  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  Trust  Administrator  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
Trust Administrator. 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 Trust  Administrator is
not the Certificate  Registrar,  the Trust  Administrator 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,  the Trust Administrator and the Trustee that neither the Seller, the
Master Servicer,  the Certificate  Registrar,  the Trust  Administrator  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 Trust Administrator 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  Trust
Administrator  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 Trust  Administrator  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  Trust
Administrator  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 Trust  Administrator
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 Trust  Administrator  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 Trust  Administrator  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 Trust Administrator 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,  the Trustee nor the Trust Administrator 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 Trust  Administrator  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 and
the Trust  Administrator.  No such resignation  shall become effective until the
Trustee,  the Trust Administrator 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 the Trust  Administrator,
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 or the Trust  Administrator  (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 and the
Trust Administrator,  in the exercise of its reasonable  judgment,  and executes
and delivers to the Trustee and the Trust  Administrator  an agreement,  in form
and   substance   reasonably   satisfactory   to  the   Trustee  and  the  Trust
Administrator,  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, Trust Administrator 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, TRUST ADMINISTRATOR
                              AND SELLER BY MASTER SERVICER.

            The Master  Servicer shall  indemnify and hold harmless the Trustee,
the Trust  Administrator  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,  the Trust  Administrator 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 the Trust  Administrator (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 Trust  Administrator  on behalf of the Trustee pursuant to and under this
Section, subject to the provisions of Section 7.05; and, without limitation, the
Trust  Administrator on behalf of 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 Trust  Administrator  and 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 Trust Administrator
on behalf of 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 or the Trust  Administrator 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 Trust Administrator may, but
need not if the Trustee or the Trust Administrator, as the case may be, 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 or the Trust  Administrator,  the
Trustee or the Trust  Administrator,  as the case may be, 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      TRUST   ADMINISTRATOR  TO  ACT;   APPOINTMENT  OF
                              SUCCESSOR.

            When the Master Servicer receives notice of termination  pursuant to
Section 7.01 or the Trustee or the Trust Administrator  receives the resignation
of the Master  Servicer  evidenced by an Opinion of Counsel  pursuant to Section
6.04, the Trust Administrator on behalf of 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 Trust  Administrator  is  succeeding  to the Master  Servicer  as the Master
Servicer, as compensation therefor, the Trust Administrator 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  Trust
Administrator  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 Trust Administrator 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 Trust  Administrator  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  Trust
Administrator  is  required  to  solicit  bids  as  provided  above,  the  Trust
Administrator 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 Trust  Administrator  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 Trust  Administrator  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
Trust Administrator 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 Trust  Administrator  to the Master Servicer at the time of
such sale, transfer and assignment to the Master Servicer's successor. The Trust
Administrator  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 Trust  Administrator  and any  successor
servicer  in  effecting  the  termination  of the  Master  Servicer's  servicing
responsibilities  and rights  hereunder  and shall  promptly  provide  the Trust
Administrator 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 Trust
Administrator  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 Trust  Administrator  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 Trust
Administrator)  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  Trust
Administrator shall give prompt written notice thereof to  Certificateholders at
their  respective  addresses  appearing in the Certificate  Register.  The Trust
Administrator  shall also,  within 45 days after the  occurrence of any Event of
Default  known to the  Trust  Administrator,  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 AND THE TRUST ADMINISTRATOR

            SECTION 8.01      DUTIES OF TRUSTEE AND THE TRUST ADMINISTRATOR.

            The Trustee and the Trust Administrator,  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 and the Trust  Administrator,
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  and  the  Trust  Administrator,  upon  receipt  of all
resolutions,  certificates,  statements, opinions, reports, documents, orders or
other instruments  furnished to the Trustee and the Trust  Administrator,  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  and  the  Trust
Administrator  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 and the Trust Administrator 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  and the  Trust  Administrator  shall be
      determined solely by the express provisions of this Agreement, the Trustee
      and the Trust Administrator 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 the Trust  Administrator  and, in the
      absence  of  bad  faith  on  the  part  of  the   Trustee  and  the  Trust
      Administrator,  the Trustee and the Trust  Administrator  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  the  Trust   Administrator,   and   conforming  to  the
      requirements of this Agreement;

            (ii) The Trustee and the Trust Administrator 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 and the Trust Administrator,  or exercising any trust or power
      conferred  upon  the  Trustee  and the  Trust  Administrator,  under  this
      Agreement; and

            (iii) The  Trustee and the Trust  Administrator  shall not be liable
      for any error of  judgment  made in good faith by any of their  respective
      Responsible  Officers,  unless it shall be proved  that the Trustee or the
      Trust  Administrator 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 or the Trust  Administrator 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 AND THE
                              TRUST ADMINISTRATOR.

            Except as otherwise provided in Section 8.01:

            (i) Each of the Trustee and the Trust  Administrator 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 or Trust  Administrator,  as  applicable,  may
      prescribe;

            (ii) Each of the  Trustee  and the Trust  Administrator  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 Opinion of Counsel;

            (iii)  Neither of the Trustee nor the Trust  Administrator  shall 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 Trust  Administrator  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
      Trust  Administrator may be required to act as Master Servicer pursuant to
      Section  7.05 and  thereupon  only for the acts or  omissions of the Trust
      Administrator as successor Master Servicer; and

            (v) Each of the Trustee and the Trust  Administrator 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      NEITHER TRUSTEE NOR TRUST ADMINISTRATOR
                              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, neither the Trustee
nor the Trust  Administrator  shall 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  or the  Trust  Administrator  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 or the Trust Administrator, not reasonably assured
to the Trustee or the Trust  Administrator by the security afforded to it by the
terms of this  Agreement,  the  Trustee or the Trust  Administrator  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 or the Trust Administrator, shall
be repaid by the Master Servicer upon demand.

            SECTION 8.04      NEITHER  TRUSTEE NOR TRUST  ADMINISTRATOR  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 neither the Trustee nor the Trust  Administrator
assumes  responsibility  as to the correctness of the same.  Neither the Trustee
nor the Trust  Administrator makes any representation for the correctness of the
same. Neither the Trustee nor the Trust  Administrator  makes 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,  neither the
Trustee  nor  the  Trust  Administrator  shall  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   AND   TRUST   ADMINISTRATOR   MAY   OWN
                              CERTIFICATES.

            Each of the Trustee,  the Trust Administrator 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,  Trust
Administrator  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 each of the
Trustee and the Trust  Administrator  from time to time, and each of the Trustee
and  the  Trust   Administrator   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 or the
Trust  Administrator,  as the case may be, and the Master  Servicer  will pay or
reimburse the Trustee or the Trust  Administrator,  as the case may be, 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.

            Each of the Trustee and the Trust  Administrator  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  or the Trust  Administrator  shall
cease to be eligible in accordance  with the  provisions  of this Section,  such
entity shall resign  immediately in the manner and with the effect  specified in
Section 8.08.

            SECTION 8.08      RESIGNATION AND REMOVAL.

            Either of the  Trustee  or the Trust  Administrator  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 or trust  administrator.  Upon receiving such
notice of resignation,  the Master  Servicer shall promptly  appoint a successor
trustee or trust administrator 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  or trust  administrator  shall  have been
appointed and have accepted  appointment within 30 days after the giving of such
notice of resignation, the resigning Trustee or Trust Administrator, as the case
may be, may petition any court of competent  jurisdiction for the appointment of
a successor trustee or trust administrator.

            If at any time the Trustee or the Trust Administrator 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 or the Trust  Administrator  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 the Trust  Administrator  or of the  property  or
affairs  of  the  Trustee  or  the  Trust   Administrator  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/or the Trust
Administrator,  as the case may be,  and  appoint  a  successor  trustee  and/or
successor trust administrator by written instrument,  in duplicate,  one copy of
which  instrument  shall be delivered to the Trustee or Trust  Administrator  so
removed and one copy to the successor trustee or successor trust  administrator,
as the case may be.

            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/or the Trust  Administrator 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 or the Trust Administrator
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 or successor trust administrator  appointed as
provided in Section 8.08 shall  execute,  acknowledge  and deliver to the Master
Servicer and to its predecessor trustee or trust administrator,  as the case may
be, an  instrument  accepting  such  appointment  hereunder,  and  thereupon the
resignation or removal of the predecessor  trustee or trust  administrator 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  or trust  administrator,  as the  case  may be,  herein.  The
predecessor  trustee or trust  administrator  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 or successor trust  administrator,  as the case may be, 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
or  trust  administrator  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 or
successor  trust  administrator,  as the case may be, the  successor  trustee or
trust  administrator  shall cause such notice to be mailed at the expense of the
Master Servicer.

            SECTION 8.10      MERGER OR CONSOLIDATION.

            Any Person into which either the Trustee or the Trust  Administrator
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  or the  Trust
Administrator shall be a party, or any Person succeeding to the business of such
entity,  shall be the  successor of the Trustee or Trust  Administrator,  as the
case  may be,  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 or the
Trust Administrator,  as the case may be, 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 the REMIC to federal, state or
local tax or cause the Trust Estate to fail to qualify as a REMIC, which Opinion
of  Counsel  shall  be  at  the  sole  expense  of  the  Trustee  or  the  Trust
Administrator, as the case may be.

            SECTION 8.11      AUTHENTICATING AGENT.

            The Trust  Administrator may appoint an Authenticating  Agent, which
shall  be   authorized  to  act  on  behalf  of  the  Trust   Administrator   in
authenticating Certificates. Wherever reference is made in this Agreement to the
authentication  of  Certificates  by  the  Trust   Administrator  or  the  Trust
Administrator's  countersignature,  such  reference  shall be deemed to  include
authentication on behalf of the Trust Administrator by the Authenticating  Agent
and  a  certificate   of   authentication   executed  on  behalf  of  the  Trust
Administrator  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 Trust
Administrator 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 Trust
Administrator,  the Seller and the Master Servicer.  The Trust Administrator 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 Trust  Administrator  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 Trust  Administrator.
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  Trust  Administrator  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 Trust  Administrator,  by  entering  into a  Custodial  Agreement.
Subject to this Article VIII, the Trust Administrator  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,  the Trust  Administrator  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 a REMIC;  or (ii) cause the imposition of any federal,
state or local  income,  prohibited  transaction,  contribution  or other tax on
either the 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 Trust  Administrator,  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 using a calendar year
as the taxable year for the REMIC and the accrual method of accounting;  (ii) in
the  first  such  federal  tax  return,  make,  or cause  to be made,  elections
satisfying  the  requirements  of the REMIC  Provisions,  on behalf of the Trust
Estate,  to treat  the Trust  Estate  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 REMIC, 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 Trust  Administrator  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  REMIC,  including  but not  limited  to the  income,  expenses,  individual
Mortgage Loans  (including REO Mortgage  Loans,  other assets and liabilities of
the REMIC,  and the fair market value and adjusted  basis of the REMIC  property
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 the REMIC within
the meaning of Code Section  860D(a)(2) other than the interests  represented by
the Class  A-1,  Class  A-2,  Class  A-3,  Class  A-4,  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;  (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 Trust Estate or the REMIC to tax or (c) cause the
Trust Estate to fail to qualify as a REMIC; (ix) exercise reasonable care not to
allow the 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  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 REMIC, 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 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  Certificateholder  for such  purpose  (or if the Master  Servicer is not so
permitted, the Holder of the Class A-R Certificate shall be a tax matters person
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's  sole  duties  with  respect to the REMIC are to sign the tax  returns
referred  to in clause  (i) of the second  preceding  sentence  and comply  with
written directions from the Master Servicer or the Trust Administrator.

            In order to enable the Master Servicer,  the Trust  Administrator 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,  the Trust  Administrator  or the Trustee,  as the case may be,
promptly upon request therefor, any such additional information or data that the
Master Servicer, the Trust Administrator 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,
the Trust  Administrator  or the  Trustee,  as the case may be, for any  losses,
liabilities,  damages,  claims or  expenses  of the Master  Servicer,  the Trust
Administrator or the Trustee arising from any errors or  miscalculations  by the
Master Servicer, the Trust Administrator 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,  the  Trust
Administrator or the Trustee,  as the case may be, on a timely basis. The Master
Servicer hereby indemnifies the Seller, the Trust  Administrator and the Trustee
for any losses,  liabilities,  damages,  claims or  expenses of the Seller,  the
Trust  Administrator 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 the REMIC as described  above.  In the event that
the Trust Administrator prepares any of the federal, state and local tax returns
of the REMIC as described above, the Trust Administrator  hereby indemnifies the
Seller,  the  Master  Servicer  and the  Trustee  for any  losses,  liabilities,
damages,  claims or expenses of the Seller,  the Master  Servicer or the Trustee
arising  from  the  Trust  Administrator'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,  the Trust  Administrator 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,  the Trust  Administrator  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 Trust  Administrator  shall make a Periodic  Advance as
required by Section  3.03 hereof;  PROVIDED,  HOWEVER,  the Trust  Administrator
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  Trust  Administrator  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.

            SECTION 8.17      TRUST  ADMINISTRATOR  COVENANTS  CONCERNING  YEAR
                              2000 COMPLIANCE.

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



                                    ARTICLE I

<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, the Trust Administrator and
the Trustee created hereby (other than the obligation of the Trust Administrator
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  Trust
Administrator  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 Trust  Administrator  the  certification
required by Section 3.04 and the Trust  Administrator  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  Trust
Administrator 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 Trust  Administrator  (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 Trust
Administrator  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
Trust  Administrator  therein specified.  If the Master Servicer is obligated to
give notice to Certificateholders as aforesaid, it shall give such notice to the
Trust  Administrator  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 Trust
Administrator 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 Certificate,  the amounts, if any, which remain on
deposit in the Certificate  Account (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.  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 Trust  Administrator  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 Trust  Administrator  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 Trust  Administrator  (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 Trust  Administrator  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 Trust Administrator 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  the REMIC to federal tax or cause the
Trust Estate to fail to qualify as a REMIC 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 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 return of the 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 Trust
      Administrator  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 a REMIC
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 or the REMIC
pursuant to the Code that would be a claim  against the Trust  Estate,  provided
that (a) the Trustee  and the Trust  Administrator  have  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 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
Trust Estate or the 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,  neither
the Trustee nor the Trust  Administrator  shall 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 the REMIC to tax or cause the Trust
Estate  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  Trust   Administrator   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 Trust Administrator 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,  the  Trust  Administrator  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 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 Trust Administrator.

            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 Trust
Administrator,  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 Trust  Administrator 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 Trust  Administrator to institute such action, suit or proceeding in its own
name as Trust  Administrator  hereunder  and  shall  have  offered  to the Trust
Administrator  such  reasonable  indemnity  as it may require  against the cost,
expenses  and  liabilities  to be  incurred  therein or  thereby,  and the Trust
Administrator,  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 Trust
Administrator,  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 Trust  Administrator 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,  the Trust
Administrator 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, (iii) in the case of the Trustee, to the Corporate Trust
Office and (iv) in the case of the Trust  Administrator,  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 or the Trust  Administrator,  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,  the  Trust
Administrator 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,  the Trust  Administrator,  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  Trust  Administrator  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  or the  Trust
      Administrator pursuant to Section 8.08;

            (iii) the appointment of a successor trustee or trust  administrator
      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 6.250% per annum.

            SECTION 11.02     CUT-OFF DATE.

            The Cut-Off Date for the Certificates is April 1, 1999.

            SECTION 11.03     CUT-OFF DATE AGGREGATE PRINCIPAL BALANCE.

            The Cut-Off Date Aggregate Principal Balance is $200,029,975.75.

            SECTION 11.04     ORIGINAL CLASS A PERCENTAGE.

            The Original Class A Percentage is 96.81275395%.

            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              $155,995,000.00
            Class A-2               $10,038,000.00
            Class A-3                $5,642,000.00
            Class A-4               $19,733,000.00
            Class A-PO               $2,320,384.62
            Class A-R                      $100.00

            SECTION 11.06     ORIGINAL CLASS A NON-PO PRINCIPAL BALANCE.

            The Original Class A Non-PO Principal Balance is $191,408,100.00.

            SECTION 11.07     ORIGINAL SUBORDINATED PERCENTAGE.

            The Original Subordinated Percentage is 3.18724605%.

            SECTION 11.08     ORIGINAL CLASS B-1 PERCENTAGE.

            The Original Class B-1 Percentage is 2.02367522%.

            SECTION 11.09     ORIGINAL CLASS B-2 PERCENTAGE.

            The Original Class B-2 Percentage is 0.40463389%.

            SECTION 11.10     ORIGINAL CLASS B-3 PERCENTAGE.

            The Original Class B-3 Percentage is 0.25289618%.

            SECTION 11.11     ORIGINAL CLASS B-4 PERCENTAGE.

            The Original Class B-4 Percentage is 0.25289618%.

            SECTION 11.12     ORIGINAL CLASS B-5 PERCENTAGE.

            The Original Class B-5 Percentage is 0.10115847%.

            SECTION 11.13     ORIGINAL CLASS B-6 PERCENTAGE.

            The Original Class B-6 Percentage is 0.15198612%.

            SECTION 11.14     ORIGINAL CLASS B PRINCIPAL BALANCE.

            The Original Class B Principal Balance is $6,301,491.13

            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                      $4,001,000.00
            Class B-2                        $800,000.00
            Class B-3                        $500,000.00
            Class B-4                        $500,000.00
            Class B-5                        $200,000.00
            Class B-6                        $300,491.13

            SECTION 11.16     ORIGINAL CLASS B-1 FRACTIONAL INTEREST.

            The Original Class B-1 Fractional Interest is 1.16357082%.

            SECTION 11.17     ORIGINAL CLASS B-2 FRACTIONAL INTEREST.

            The Original Class B-2 Fractional Interest is 0.75893694%.

            SECTION 11.18     ORIGINAL CLASS B-3 FRACTIONAL INTEREST.

            The Original Class B-3 Fractional Interest is 0.50604076%.

            SECTION 11.19     ORIGINAL CLASS B-4 FRACTIONAL INTEREST.

            The Original Class B-4 Fractional Interest is 0.25314458%.

            SECTION 11.20     ORIGINAL CLASS B-5 FRACTIONAL INTEREST.

            The Original Class B-5 Fractional Interest is 0.15198611%.

            SECTION 11.21     CLOSING DATE.

            The Closing Date is April 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  $20,002,997.58  (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-PO and Class A-R
Certificates)  and the Class B Certificates  (other than the Class B-5 and Class
B-6 Certificates),  the minimum Denomination  eligible for wire transfer on each
Distribution Date is $500,000. With respect to the Class A-PO Certificates,  the
minimum  Denomination  eligible for wire transfer on each  Distribution  Date is
100% Percentage  Interest.  The Class A-R, Class B-5 and Class B-6  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-2, Class A-3, Class A-PO and Class A-R  Certificates)  and each
Class of the Class B  Certificates  (other than the Class B-4, B-5 and Class B-6
Certificates)  represents a $100,000 Denomination.  A Single Certificate for the
Class A-2 and Class A-3 Certificates represents a $1,000 Denomination.  A Single
Certificate  for the Class A-R  Certificate  represents a $100  Denomination.  A
Single  Certificate  for  the  Class  B-4  Certificates  represents  a  $250,000
Denomination.  A Single Certificate for the Class B-5 and Class B-6 Certificates
represents a $200,000.00 and $300,419.13  Denomination,  respectively.  A Single
Certificate  for  the  Class  A-PO   Certificates   represents  a  $2,320,384.62
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.


<PAGE>





            IN WITNESS  WHEREOF,  the  Seller,  the Master  Servicer,  the Trust
Administrator  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 Trust Administrator


                                   By: 
                                       -----------------------------------------
                                       Name
                                       Title:


Attest:

By:
      -------------------------
Name:                   
      -------------------------
Title:                  
      -------------------------


                                 UNITED STATES TRUST COMPANY
                                   OF NEW YORK
                                       as Trustee


                                   By: 
                                       -----------------------------------------
                                       Name
                                       Title:



<PAGE>



STATE OF MARYLAND       )
                        )  ss.:
COUNTY OF FREDERICK     )


            On this 28th day of April,  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 April,  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                )
                        )  ss.:
COUNTY OF               )


            On this 28th day of April,  1999,  before me, a notary public in and
for _________________, personally appeared ___________________, known to me who,
being  by  me  duly   sworn,   did   depose   and  say  that  s/he   resides  at
_________________,  _________________;  that s/he is a  ____________________  of
United States Trust Company of New York, a ________________,  one of the parties
that  executed  the  foregoing  instrument;  and that s/he signed  his/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 April,  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 1999-12 Applicable Unscheduled Principal Receipt Period


                                      Full Unscheduled     Partial Unscheduled
Servicer                             Principal Receipts     Principal Receipts
- --------                             ------------------     ------------------
Norwest Mortgage, Inc. Exhibit F-1        Mid-Month              Mid-Month
The Huntington Mortgage Company           Mid-Month              Prior Month
GMAC Mortgage Corporation                 Mid-Month              Prior Month
Star Bank                                 Mid-Month              Prior Month
First Union Mortgage Corp.                Mid-Month              Prior Month
National City Mortgage Company            Mid-Month              Prior Month
Bank of America, NT&SA                    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 1999-12 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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-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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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 6.250% 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 Trust  Administrator  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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



      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 1999-12 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination: $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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-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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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 6.250% 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 Trust  Administrator  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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:

First Union National Bank,
Trust Administrator



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 1999-12 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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-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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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 6.250% 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 Trust  Administrator  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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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 6.250% 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 Trust  Administrator  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 April 28, 1999, and based on its issue
price of 96.78125%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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  3.27083333%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  6.70%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.01765886%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

                                           First Distribution Date: May 25, 1999
Percentage Interest evidenced :
by this Certificate:  %                    Denomination:  $

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator  (the "Trust  Administrator"),  and United States Trust Company of
New York,  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 Trust  Administrator  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 Trust  Administrator  or the Seller may
require  the Holder to deliver an opinion of counsel  acceptable  to and in form
and substance  satisfactory to the Trust  Administrator 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 Trust  Administrator,  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 Trust Administrator 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  Trust
Administrator  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 April 28, 1999, at an issue price of
68.09375%  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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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 31.90625000%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  8.60%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.43924298%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                            Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 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-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.



<PAGE>




                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $100.00
by this Certificate:  100%

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the "Agreement")  among the
Seller,  Norwest Bank Minnesota,  National Association,  as master servicer (the
"Master  Servicer"),  First Union  National  Bank, as trust  administrator  (the
"Trust  Administrator")  and the United  States  Trust  Company of New York,  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 6.250% 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 Trust Administrator 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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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 6.250% 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 Trust  Administrator  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 Trust
Administrator  (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 Trust Administrator
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 April 28, 1999, and based on its issue
price of 96.56250%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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  3.48958333%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  6.76%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.02039733%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                            Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination: $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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
6.250% 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 Trust  Administrator  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 Trust
Administrator  (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 Trust Administrator
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 April 28, 1999, and based on its issue
price of 94.53125%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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  5.52083333%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  7.06%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.03181142%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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
6.250% 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 Trust  Administrator  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 Trust
Administrator  (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 Trust Administrator
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 April 28, 1999, and based on its issue
price of 91.73075%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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  8.32133333%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  7.50%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.04706442%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator


                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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
6.250% 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 Trust  Administrator  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 Trust  Administrator  or the Seller may
require  the Holder to deliver an opinion of counsel  acceptable  to and in form
and substance  satisfactory to the Trust  Administrator 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 Trust  Administrator,  the Seller,  the Master
Servicer,  and any  Paying  Agent  acting on  behalf of the Trust  Administrator
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 Trust Administrator 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 Trust Administrator 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 April 28, 1999, and based on its issue
price of 73.82775%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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 26.22433333%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  10.82%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.12992719%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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
6.250% 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.
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 Trust Administrator 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 Trust  Administrator  or the Seller may
require  the Holder to deliver an opinion of counsel  acceptable  to and in form
and substance  satisfactory to the Trust  Administrator 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 Trust  Administrator,  the Seller,  the Master
Servicer,  and any  Paying  Agent  acting on  behalf of the Trust  Administrator
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 Trust Administrator 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 Trust Administrator 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 April 28, 1999, and based on its issue
price of 49.87975%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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 50.17233333%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  17.66%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.19124567%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



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 1999-12, 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, THE TRUST ADMINISTRATOR OR ANY
OF THEIR AFFILIATES,  AND IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER
SERVICER, THE TRUSTEE, THE TRUST ADMINISTRATOR 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:  April 1, 1999

CUSIP No.:  66937R                         First Distribution Date: May 25, 1999

Percentage Interest evidenced :            Denomination:  $
by this Certificate:  %

Final Scheduled Maturity
Date:  May 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 April 28, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer (the "Master  Servicer"),  First Union  National Bank, as trust
administrator (the "Trust Administrator") and the United States Trust Company of
New York,  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
6.250% 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.
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 Trust Administrator 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 Trust  Administrator  or the Seller may
require  the Holder to deliver an opinion of counsel  acceptable  to and in form
and substance  satisfactory to the Trust  Administrator 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 Trust  Administrator,  the Seller,  the Master
Servicer,  and any  Paying  Agent  acting on  behalf of the Trust  Administrator
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 Trust Administrator 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 Trust Administrator 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 April 28, 1999, and based on its issue
price of 23.46875%, 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 350% SPA (as
defined in the  Prospectus  Supplement  dated April 20, 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 76.58333333%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  35.77%; and (iii) the
amount of OID allocable to the short first accrual period (April 28, 1999 to May
25, 1999) as a percentage of the initial  principal balance of this Certificate,
calculated using the exact method, is approximately 0.15992118%.

            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 Trust Administrator,  by manual signature, this Certificate shall
not be entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




            IN  WITNESS  WHEREOF,   the  Trust  Administrator  has  caused  this
Certificate to be duly executed as of the date set forth below.

Dated:


                                       First Union National Bank,
                                          Trust Administrator



                                       By ____________________________
                                          Authorized Officer

Countersigned:



       First Union National Bank,
          Trust Administrator



By ________________________
   Authorized Officer



<PAGE>



                                    EXHIBIT C
                [Form of Reverse of Series 1999-12 Certificates]

                      NORWEST ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1999-12

            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 Trust  Administrator,  such advances are reimbursable to such Servicer,  the
Master  Servicer  or the  Trust  Administrator  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 Trust Administrator,  as applicable,  of advances made by
such Servicer, the Master Servicer or the Trust Administrator.

            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, the Trust Administrator and the Trustee and the
rights of the Certificateholders  under the Agreement at any 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 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 Trust  Administrator,  duly
endorsed by, or  accompanied by an assignment in the form below or other written
instrument of transfer in form  satisfactory to the Trust  Administrator 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 Trust  Administrator  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 Trust  Administrator,  the
Trustee and the Certificate  Registrar,  and any agent of the Seller, the Master
Servicer, the Trust Administrator, 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 Trust
Administrator,  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 Trust Administrator 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 Trust  Administrator  (including
its successors  under the Pooling and Servicing  Agreement  defined  below,  the
"Trust Administrator"),  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

            WHEREAS,  the Seller, the Master Servicer,  the Trust  Administrator
and United  States Trust  Company of New York,  as trustee,  have entered into a
Pooling  and  Servicing  Agreement  dated as of April 28,  1999  relating to the
issuance of Mortgage Pass-Through Certificates,  Series 1999-12 (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 Trust
Administrator  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 Trust  Administrator,  the
Seller, the Master Servicer and the Custodian hereby agree as follows:


                                   ARTICLE XII

                                   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 XIII

                          CUSTODY OF MORTGAGE DOCUMENTS

            Section  13.01  CUSTODIAN TO ACT AS AGENT;  ACCEPTANCE  OF CUSTODIAL
FILES. The Custodian, as the duly appointed agent of the Trust Administrator 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  Trust  Administrator  subsequent  to  the  date  hereof  (the
"Custodial Files") as agent for the Trust  Administrator,  in trust, for the use
and benefit of all present and future Certificateholders.

            Section 13.02  RECORDATION  OF  ASSIGNMENTS.  If any Custodial  File
includes one or more  assignments to the Trust  Administrator  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 13.03 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 Trust Administrator.

            Section  13.04  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 Trust Administrator.

            Section 13.05  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  13.06  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 XIV

                            CONCERNING THE CUSTODIAN

            Section   14.01   CUSTODIAN   A  BAILEE   AND  AGENT  OF  THE  TRUST
ADMINISTRATOR.  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 Trust Administrator,  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 14.02 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 14.03 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 14.04 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 14.05 CUSTODIAN MAY RESIGN;  TRUST  ADMINISTRATOR 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 Trust
Administrator  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 Trust Administrator 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 Trust  Administrator  may remove the  Custodian at any time.  In
such  event,  the Trust  Administrator  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
Trust  Administrator  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 Trust  Administrator
without the prior approval of the Seller and the Master Servicer.

            Section 14.06 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 14.07 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 XV

                            MISCELLANEOUS PROVISIONS

            Section 15.01 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  15.02  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 Trust  Administrator  shall  enter into any  amendment  hereof
except  as  permitted  by  the  Pooling  and  Servicing  Agreement.   The  Trust
Administrator  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  15.03  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 15.04  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 Trust Administrator,  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 15.05 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
Frederick, Maryland 21703                By:    ________________________________
                                         Name:  ________________________________
                                         Title: ________________________________

Address:                                 NORWEST BANK MINNESOTA, NATIONAL
                                            ASSOCIATION
7485 New Horizon Way
Frederick, Maryland 21703                By:    ________________________________
                                         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]

NASCOR
NMI / 1999-12  Exhibit F-1
30 YEAR FIXED RATE RELOCATION LOANS


<TABLE>
<CAPTION>
(i)       (ii)                                       (iii)     (iv)      (v)       (vi)        (vii)     (viii)      (ix)          
- --------  ---------------------------  -----  -----  --------  --------  --------  ----------  --------  ----------  --------------
                                                                         NET                                         CUT-OFF       
MORTGAGE                                                       MORTGAGE  MORTGAGE  CURRENT     ORIGINAL  SCHEDULED   DATE          
LOAN                                          ZIP    PROPERTY  INTEREST  INTEREST  MONTHLY     TERM TO   MATURITY    PRINCIPAL     
NUMBER    CITY                         STATE  CODE   TYPE      RATE      RATE      PAYMENT     MATURITY  DATE        BALANCE       
- --------  ---------------------------  -----  -----  --------  --------  --------  ----------  --------  ----------  --------------
<S>       <C>                          <C>    <C>    <C>       <C>       <C>       <C>         <C>       <C>         <C>

THERE ARE NO DES MOINES LOANS


<CAPTION>
(i)       (x)     (xi)       (xii)       (xiii)    (xiv)        (xv)         (xvi)      
- --------  ------  ---------  ----------  --------  -----------  -----------  -----------
                                                                                        
MORTGAGE                     MORTGAGE              T.O.P.       MASTER       FIXED      
LOAN                         INSURANCE   SERVICE   MORTGAGE     SERVICE      RETAINED   
NUMBER    LTV     SUBSIDY    CODE        FEE       LOAN         FEE          YIELD      
- --------  ------  ---------  ----------  --------  -----------  -----------  -----------
<S>       <C>     <C>        <C>         <C>       <C>          <C>          <C>


</TABLE>



<PAGE>



                                   EXHIBIT F-2

           [Schedule of Mortgage Loans Serviced by Other Servicers]

NASCOR
NMI / 1999-12  Exhibit F-2
30 YEAR FIXED RATE RELOCATION  LOANS

<TABLE>
<CAPTION>
(i)       (ii)                                       (iii)     (iv)      (v)       (vi)       (vii)     (viii)     (ix)       
- --------  ---------------------------  -----  -----  --------  --------  --------  ---------  --------  ---------  -----------
                                                                         NET                                       CUT-OFF    
MORTGAGE                                                       MORTGAGE  MORTGAGE  CURRENT    ORIGINAL  SCHEDULED  DATE       
LOAN                                          ZIP    PROPERTY  INTEREST  INTEREST  MONTHLY    TERM TO   MATURITY   PRINCIPAL  
NUMBER    CITY                         STATE  CODE   TYPE      RATE      RATE      PAYMENT    MATURITY  DATE       BALANCE    
- --------  ---------------------------  -----  -----  --------  --------  --------  ---------  --------  ---------  -----------
<S>       <C>                          <C>    <C>    <C>       <C>       <C>       <C>        <C>       <C>        <C>        
4675406   SPARTA                       NJ     07871  SFD          6.625     6.250  $3,278.40      360   1-Apr-29   $512,000.00
4723027   BASKING RIDGE                NJ     07920  SFD          6.125     5.858  $3,038.06      360   1-Apr-29   $500,000.00
4734434   SCOTTSDALE                   AZ     85259  SFD          6.375     6.108  $2,538.84      360   1-Mar-29   $406,573.08
4740444   MONROE                       NY     10950  SFD          6.625     6.250  $1,581.57      360   1-Feb-29   $246,562.95
4760324   LA JOLLA                     CA     92037  SFD          6.750     6.250  $3,061.39      360   1-Jul-28   $468,259.11
4765883   WEST CHESTER                 PA     19382  SFD          6.625     6.250  $1,920.94      360   1-Jan-29   $299,195.16
4766089   DUBLIN                       OH     43017  SFD          6.500     6.233  $1,802.66      360   1-Feb-29   $284,682.95
4768610   DANVILLE                     CA     94526  SFD          6.500     6.233  $3,483.96      360   1-Apr-29   $551,200.00
4772218   ROUND ROCK                   TX     78681  SFD          6.750     6.250  $  964.47      360   1-Jul-28   $147,521.44
4782758   EVERETT                      WA     98203  SFD          6.625     6.250  $1,592.14      360   1-Jan-29   $247,887.10
4783423   MANDAN                       ND     58554  SFD          6.875     6.250  $1,839.41      360   1-Feb-29   $279,456.44
4783563   SCOTTSDALE                   AZ     85259  SFD          6.250     5.983  $1,847.16      360   1-Apr-29   $300,000.00
4783746   MADISON                      NJ     07940  SFD          6.625     6.250  $2,146.33      360   1-Sep-28   $332,985.46
4785080   BURLINGAME                   CA     94010  SFD          6.250     5.983  $1,847.16      360   1-Mar-29   $299,715.34
4787001   COTO DE CAZA                 CA     92679  SFD          6.375     6.108  $2,339.52      360   1-Apr-29   $375,000.00
4787591   HOUSTON                      TX     77005  SFD          6.625     6.250  $2,241.09      360   1-Feb-29   $349,380.70
4788385   MANDEVILLE                   LA     70471  SFD          6.750     6.250  $1,994.44      360   1-Jul-28   $305,017.29
4790208   CRANBURY                     NJ     08512  SFD          6.625     6.250  $2,206.20      360   1-Jan-29   $343,296.28
4792111   FALMOUTH                     ME     04105  SFD          6.375     6.108  $2,183.55      360   1-Feb-29   $349,349.93
4792570   OMAHA                        NE     68130  SFD          7.250     6.250  $1,684.98      360   1-Aug-28   $245,421.35
4793226   BRANCHBURG                   NJ     08876  SFD          6.625     6.250  $1,433.50      360   1-Sep-28   $222,469.23
4794791   SAN JOSE                     CA     95138  SFD          7.000     6.250  $4,284.55      360   1-Sep-28   $640,239.52
4800782   LONG GROVE                   IL     60047  SFD          7.125     6.250  $4,360.65      360   1-Mar-29   $646,732.40
4801205   NEW HOPE                     PA     18938  SFD          6.500     6.233  $2,451.48      360   1-Mar-29   $387,499.37
4801848   MEDFORD                      NJ     08055  SFD          6.500     6.233  $2,054.23      360   1-Feb-29   $274,039.95
4803591   SAN JOSE                     CA     95120  SFD          6.625     6.250  $3,299.98      360   1-Feb-29   $514,458.07
4809723   GREENFIELD                   MN     55357  SFD          6.250     5.983  $2,061.12      360   1-Mar-29   $334,432.37
4812771   YARDLEY                      PA     19067  SFD          6.500     6.233  $1,833.63      360   1-Mar-29   $289,821.38
4820700   TRUMBULL                     CT     06611  SFD          6.750     6.250  $2,594.40      360   1-Apr-29   $400,000.00
4826635   FREEHOLD                     NJ     07728  SFD          6.875     6.250  $2,662.21      360   1-Mar-29   $404,909.53
4827830   NAPERVILLE                   IL     60540  SFD          6.625     6.250  $1,824.89      360   1-Jan-29   $284,241.47
4829004   WILDWOOD                     MO     63005  SFD          6.750     6.250  $1,778.79      360   1-Feb-29   $273,776.41
4831001   CORDOVA                      TN     38018  SFD          6.875     6.250  $1,902.47      360   1-Mar-29   $289,356.70
4831766   COTO DE CAZA                 CA     92679  SFD          6.750     6.250  $2,957.61      360   1-Feb-29   $455,212.57
4831855   BOCA RATON                   FL     33428  SFD          6.500     6.233  $1,580.18      360   1-Mar-29   $249,773.99
4832443   MILFORD                      CT     06460  SFD          6.750     6.250  $1,748.30      360   1-Mar-29   $269,317.92
4832872   PEAPACK                      NJ     07977  SFD          6.250     5.983  $3,103.22      360   1-Apr-29   $504,000.00
4833272   MARTINEZ                     CA     94553  SFD          6.625     6.250  $1,757.98      360   1-Mar-29   $274,307.76
4834310   ALBUQUERQUE                  NM     87100  SFD          6.375     6.108  $2,339.52      360   1-Feb-29   $374,303.49
4834328   HOPKINTON                    MA     01748  SFD          7.000     6.250  $2,884.09      360   1-Feb-29   $432,787.25
4835224   OAKLAND                      CA     94611  SFD          6.500     6.233  $2,781.10      360   1-Mar-29   $439,602.23
4835660   THOUSAND OAKS                CA     91320  SFD          6.500     6.233  $1,927.81      360   1-Mar-29   $304,724.27
4840025   BERKELEY                     CA     94707  SFD          7.000     6.250  $1,655.28      360   1-Apr-29   $248,800.00
4841765   SALT LAKE CITY               UT     84117  SFD          6.750     6.250  $1,636.42      360   1-Mar-29   $252,082.77
4845448   COLTS NECK                   NJ     07722  SFD          6.625     6.250  $2,561.25      360   1-Jan-29   $398,935.39
4845484   UNION CITY                   CA     94587  SFD          6.875     6.250  $2,627.72      360   1-Feb-29   $399,325.97
4847564   FAIRFIELD                    CT     06430  SFD          6.000     5.733  $1,828.63      360   1-Apr-29   $305,000.00
4847758   CINCINNATI                   OH     45242  SFD          6.375     6.108  $1,816.71      360   1-Nov-28   $289,837.05
4852388   SCOTTSDALE                   AZ     85259  SFD          6.625     6.250  $1,600.78      360   1-Jan-29   $249,334.63
4853655   YARDLEY                      PA     19067  SFD          6.625     6.250  $2,305.12      360   1-Mar-29   $359,682.38
4853876   OCEANSIDE                    CA     92057  SFD          7.125     6.250  $2,009.71      360   1-Mar-29   $298,061.45
4854376   CASTRO VALLEY                CA     94552  SFD          6.375     6.108  $2,337.02      360   1-Mar-29   $374,253.04
4855032   LITTLETON                    CO     80128  SFD          6.625     6.250  $2,968.49      360   1-Feb-29   $460,774.16
4857937   LEWIS CENTER                 OH     43035  SFD          7.000     6.250  $1,729.79      360   1-Apr-29   $260,000.00
4858112   NEW CANAAN                   CT     06840  SFD          6.125     5.858  $3,773.27      360   1-Dec-28   $618,567.11
4858905   CUMMING                      GA     30128  SFD          6.375     6.108  $1,737.48      360   1-Mar-29   $278,242.05
4860066   HOPKINTON                    MA     01748  SFD          6.625     6.250  $2,444.39      360   1-Mar-29   $381,413.19
4860249   DAVIDSONVILLE                MD     21035  SFD          6.625     6.250  $1,920.94      360   1-Mar-29   $299,735.31
4861596   DES MOINES                   IA     50312  SFD          6.625     6.250  $2,033.63      360   1-Feb-29   $317,038.03
4862281   FLORHAM PARK                 NJ     07932  LCO          6.375     6.108  $1,137.01      360   1-Oct-28   $181,223.61
4863024   EXTON                        PA     19341  SFD          6.750     6.250  $2,010.66      360   1-Apr-29   $310,000.00
4864089   KELLER                       TX     76248  SFD          6.625     6.250  $1,686.58      360   1-Apr-29   $263,400.00
4864155   MILL CREEK                   WA     98012  SFD          6.500     6.233  $1,706.90      360   1-Feb-29   $269,560.42
4865260   LANSDALE                     PA     19446  SFD          6.875     6.250  $2,141.26      360   1-Apr-29   $325,950.00
4867492   WEST JORDAN                  UT     84088  SFD          6.500     6.233   $939.89       360   1-Nov-28   $148,020.52
4868966   TIMONIUM                     MD     21093  SFD          6.500     6.233  $1,834.58      360   1-Mar-29   $289,987.61
4869964   NAPERVILLE                   IL     60564  SFD          6.125     5.858  $2,430.45      360   1-Mar-29   $399,611.22
4870423   DAVIDSONVILLE                MD     21035  SFD          6.625     6.250  $2,220.28      360   1-Mar-29   $346,444.07
4871776   CHATHAM                      NJ     07928  SFD          6.000     5.733  $2,566.08      360   1-Apr-29   $428,000.00
4874465   ROWAYTON                     CT     06853  SFD          6.750     6.250  $3,748.90      360   1-Apr-29   $578,000.00
4876427   ATLANTA                      GA     30306  SFD          6.500     6.233  $1,946.77      360   1-Mar-29   $307,721.56
4876608   LAFAYETTE                    CO     80026  SFD          6.500     6.233  $1,795.71      360   1-Feb-29   $283,584.94
4878341   WESTBOROUGH                  MA     01581  SFD          6.500     6.233  $1,769.80      360   1-Dec-28   $278,979.21
4879089   ALPHARETTA                   GA     30004  SFD          6.625     6.250  $1,901.73      360   1-Feb-29   $296,474.47
4879358   WALNUT CREEK                 CA     94598  SFD          6.625     6.250  $1,844.10      360   1-Feb-29   $287,490.40
4879803   COLFAX                       NC     27235  SFD          6.875     6.250  $1,655.47      360   1-Mar-29   $251,788.28
4886731   PORT CHESTER                 NY     10573  SFD          6.750     6.250  $1,576.10      360   1-Jan-29   $240,860.19
4886888   LANGHORNE                    PA     19047  SFD          6.375     6.108  $1,597.11      360   1-Feb-29   $255,524.52
4887169   NORWALK                      CT     06854  SFD          6.500     6.233  $2,528.28      360   1-Mar-29   $399,638.39
4887382   HOUSTON                      TX     77005  SFD          6.625     6.250  $2,689.31      360   1-Jan-29   $418,658.95
4890143   MILLERSVILLE                 MD     21108  SFD          6.750     6.250  $2,497.11      360   1-Mar-29   $384,668.52
4890429   HIGHLAND                     UT     84003  SFD          6.375     6.108  $1,990.15      360   1-Feb-29   $318,407.51
4892244   SAN FRANCISCO                CA     94100  SFD          7.125     6.250  $2,637.61      360   1-Apr-29   $391,500.00
4892963   LIVERMORE                    CA     94550  SFD          6.250     5.983  $2,495.81      360   1-Feb-29   $404,578.77
4894765   NIWOT                        CO     80503  SFD          6.625     6.250  $3,649.14      360   1-Jan-29   $568,383.21
4896358   ATLANTA                      GA     30360  SFD          7.250     6.250  $1,705.79      360   1-Apr-29   $250,050.00
4896784   TRABUCO CANYON               CA     92679  SFD          6.625     6.250  $2,033.63      360   1-Dec-28   $316,469.83
4896810   FORT LAUDERDALE              FL     33327  SFD          6.500     6.233  $1,738.19      360   1-Feb-29   $274,501.44
4897463   NEW ROCHELLE                 NY     10804  SFD          6.750     6.250  $1,790.14      360   1-Mar-29   $275,762.36
4897748   CHESTER                      NJ     07930  SFD          6.750     6.250  $2,333.34      360   1-Mar-29   $359,440.25
4897806   PLEASANTON                   CA     94588  SFD          6.250     5.983  $3,632.74      360   1-Apr-29   $590,000.00
4899462   ROCHESTER HILLS              MI     48306  SFD          6.250     5.983  $3,989.85      360   1-Feb-29   $646,767.10
4899511   FLEMINGTON                   NJ     08822  SFD          6.375     6.108  $2,171.07      360   1-Mar-29   $347,677.68
4899815   BELLE MEAD                   NJ     08502  SFD          6.750     6.250  $2,905.72      360   1-Feb-29   $447,131.58
4900126   DANVILLE                     CA     94506  SFD          6.625     6.250  $3,175.95      360   1-Jan-29   $494,679.89
4901165   NORTHVILLE                   MI     48167  SFD          6.625     6.250  $2,125.84      360   1-Jan-29   $331,116.37
4901193   RANDOLPH                     NJ     07869  SFD          6.625     6.250  $1,813.37      360   1-Feb-29   $282,698.88
4901959   SOMERS                       NY     10589  SFD          6.625     6.250  $2,914.70      360   1-Feb-29   $454,394.55
4902137   KENNESAW                     GA     30144  SFD          7.250     6.250  $2,156.71      360   1-Apr-29   $316,150.00
4902327   SAN JOSE                     CA     95120  SFD          6.500     6.233  $3,463.74      360   1-Mar-29   $547,504.59
4902354   WALNUT CREEK                 CA     94598  SFD          6.875     6.250  $2,527.54      360   1-Jan-29   $383,161.50
4902498   WINCHESTER                   VA     22603  SFD          6.625     6.250  $1,581.89      360   1-Mar-29   $246,832.03
4902533   DACULA                       GA     30019  SFD          7.250     6.250  $2,067.34      360   1-Mar-29   $302,813.59
4903310   DANBURY                      CT     06810  LCO          6.250     5.983  $1,551.61      360   1-Mar-29   $251,760.89
4903695   CONCORD                      CA     94521  SFD          6.625     6.250  $2,287.20      360   1-Feb-29   $356,567.94
4904578   OWINGS MILLS                 MD     21117  SFD          6.875     6.250  $3,810.19      360   1-Mar-29   $579,512.73
4904708   VALRICO                      FL     33594  SFD          6.625     6.250  $1,888.92      360   1-Mar-29   $294,739.73
4905654   PALO ALTO                    CA     94301  SFD          6.625     6.250  $4,162.03      360   1-Mar-29   $649,426.51
4907604   LAWRENCEVILLE                GA     30043  SFD          6.250     5.983  $1,634.73      360   1-Feb-29   $264,994.85
4908360   OAKLAND                      CA     94705  SFD          6.625     6.250  $2,020.51      360   1-Feb-29   $314,871.64
4908383   PERRINEVILLE                 NJ     08535  SFD          6.875     6.250  $1,675.17      360   1-Feb-29   $254,570.31
4909378   RIDGEWOOD                    NJ     07450  SFD          6.875     6.250  $2,158.02      360   1-Mar-29   $328,224.01
4909428   WOODBURY                     MN     55119  SFD          6.750     6.250  $1,629.93      360   1-Jan-29   $250,464.61
4909526   CEDAR RAPIDS                 IA     52402  SFD          7.000     6.250  $1,646.63      360   1-Mar-29   $247,297.12
4909791   LAGRANGEVILLE                NY     12540  SFD          7.125     6.250  $1,792.10      360   1-Feb-29   $265,372.70
4910583   ALPHARETTA                   GA     30005  SFD          6.750     6.250  $3,450.55      360   1-Apr-29   $532,000.00
4910628   ORLANDO                      FL     32836  SFD          6.875     6.250  $2,206.63      360   1-Apr-29   $335,900.00
4910765   SAN JOSE                     CA     95125  SFD          6.875     6.250  $2,627.72      360   1-Mar-29   $399,663.95
4910937   PROSPECT                     KY     40059  SFD          6.625     6.250  $2,081.02      360   1-Mar-29   $324,713.25
4911366   POTTERSVILLE                 NJ     07979  LCO          6.375     6.108  $2,121.16      360   1-Mar-29   $339,685.09
4911955   FREEHOLD                     NJ     07728  SFD          6.875     6.250  $2,207.29      360   1-Apr-29   $336,000.00
4914584   AGOURA                       CA     91301  SFD          6.625     6.250  $2,113.03      360   1-Jan-29   $329,121.70
4915005   TAMPA                        FL     33602  SFD          7.000     6.250  $2,113.01      360   1-Mar-29   $317,339.66
4915029   WEST BLOOMFIELD              MI     48324  SFD          6.500     6.233  $1,653.49      360   1-Mar-29   $261,363.51
4915478   FARMINGTON                   CT     06085  SFD          6.625     6.250  $2,330.74      360   1-Jan-29   $363,031.20
4915532   SAN DIEGO                    CA     92129  SFD          7.000     6.250  $2,114.67      360   1-Mar-29   $317,589.45
4915992   MUKILTEO                     WA     98275  SFD          6.625     6.250  $1,760.86      360   1-Jan-29   $274,268.08
4916526   BRIDGEWATER                  NJ     08807  SFD          6.875     6.250  $1,839.41      360   1-Mar-29   $279,764.76
4916603   SOUTH WINDSOR                CT     06074  SFD          7.000     6.250  $1,047.86      360   1-Jan-29   $157,110.41
4916628   SAN CARLOS                   CA     94070  SFD          6.375     6.108  $3,297.16      360   1-Feb-29   $527,518.40
4917401   SMITHTOWN                    NY     11787  SFD          7.125     6.250  $1,804.90      360   1-Mar-29   $267,685.76
4917605   SHAWNEE                      KS     66216  SFD          6.625     6.250  $1,609.75      360   1-Jan-29   $250,730.88
4917731   WARREN                       NJ     07059  SFD          6.625     6.250  $3,508.91      360   1-Jan-29   $546,541.50
4917987   NEWBURY PARK                 CA     91320  SFD          6.375     6.108  $1,324.17      360   1-Feb-29   $211,855.77
4918082   HILLSBOROUGH                 NJ     08876  SFD          7.000     6.250  $1,769.04      360   1-Mar-29   $265,682.04
4918122   UNION                        NJ     08867  SFD          6.500     6.233  $1,860.81      360   1-Apr-29   $294,400.00
4918945   NIWOT                        CO     80503  SFD          6.375     6.108  $3,431.29      360   1-Mar-29   $549,490.59
4919451   GILROY                       CA     95020  SFD          6.625     6.250  $1,652.01      360   1-Feb-29   $257,543.47
4919662   SIMPSONVILLE                 SC     29681  SFD          6.750     6.250  $1,760.30      360   1-Mar-29   $271,166.33
4919707   CHESTERFIELD                 MO     63017  SFD          6.750     6.250  $1,634.47      360   1-Apr-29   $252,000.00
4921866   WAKE FOREST                  NC     27587  SFD          6.625     6.250  $1,632.80      360   1-Apr-29   $255,000.00
4922017   SAUGUS                       CA     91350  SFD          7.125     6.250  $1,811.30      360   1-Mar-29   $268,635.00
4922152   BRENTWOOD                    TN     37027  SFD          6.250     5.983  $2,290.47      360   1-Mar-29   $371,647.03
4922216   FRANKLIN TOWNSHIP            NJ     08873  SFD          7.625     6.250  $1,775.15      360   1-Feb-29   $250,435.80
4922321   BOXBORO                      MA     01719  SFD          6.625     6.250  $1,792.88      360   1-Feb-29   $279,504.54
4922413   BASKING RIDGE                NJ     07920  SFD          6.625     6.250  $1,798.00      360   1-Feb-29   $280,303.13
4922527   ALEXANDRIA                   VA     22314  SFD          6.125     5.858  $1,866.58      360   1-Mar-29   $306,901.42
4922648   NEW CANAAN                   CT     06840  SFD          6.250     5.983  $3,324.88      360   1-Mar-29   $539,487.62
4922704   NAPERVILLE                   IL     60564  SFD          6.750     6.250  $1,808.95      360   1-Mar-29   $278,659.86
4922973   FALLS CHURCH                 VA     22044  PUD          6.375     6.108  $2,991.15      360   1-Mar-29   $479,005.93
4923463   ALPHARETTA                   GA     30202  SFD          6.625     6.250  $2,122.64      360   1-Jan-29   $330,617.70
4923626   FRAMINGHAM                   MA     01701  SFD          7.125     6.250  $1,879.68      360   1-Jan-29   $278,326.67
4924056   BEDMINSTER                   NJ     07921  SFD          6.875     6.250  $2,903.63      360   1-Mar-29   $441,628.66
4924592   GUILFORD                     CT     06437  SFD          7.000     6.250  $2,182.20      360   1-Mar-29   $327,731.13
4924946   RIDGEFIELD                   CT     06877  SFD          6.250     5.983  $2,327.42      360   1-Apr-29   $378,000.00
4925419   LANDENBERG                   PA     19350  SFD          6.875     6.250  $2,196.77      360   1-Feb-29   $333,836.51
4925908   RIDGEFIELD                   CT     06877  SFD          7.125     6.250  $2,561.82      360   1-Mar-29   $379,945.91
4926436   MONTVALE                     NJ     07645  SFD          6.625     6.250  $2,420.38      360   1-Nov-28   $376,313.96
4926439   BAKERSFIELD                  CA     93312  SFD          7.125     6.250  $2,021.16      360   1-Mar-29   $299,760.09
4926573   GREENSBORO                   NC     27408  SFD          7.000     6.250  $1,910.09      360   1-Apr-29   $287,100.00
4927090   SPARTA                       NJ     07871  SFD          6.375     6.108  $1,921.52      360   1-Mar-29   $307,714.73
4927240   LAFAYETTE                    CO     80026  SFD          6.625     6.250  $1,575.17      360   1-Apr-29   $246,000.00
4927286   VACAVILLE                    CA     95687  SFD          6.500     6.233  $1,766.32      360   1-Apr-29   $279,450.00
4927530   GAITHERSBURG                 MD     20882  SFD          7.000     6.250  $1,953.33      360   1-Feb-29   $293,117.27
4927608   COMMERCE TOWNSHIP            MI     48382  SFD          6.625     6.250  $1,685.30      360   1-Feb-29   $262,719.50
4927734   WESTFIELD                    NJ     07090  SFD          6.625     6.250  $2,817.37      360   1-Jan-29   $438,612.83
4928212   NAPERVILLE                   IL     60564  SFD          6.375     6.108  $2,164.83      360   1-Mar-29   $346,678.61
4928312   PORT JEFFERSON               NY     11777  SFD          6.625     6.250  $1,838.98      360   1-Apr-29   $287,200.00
4928941   NEW MILFORD                  CT     06776  SFD          7.000     6.250  $1,995.91      360   1-Mar-29   $299,754.09
4929009   HIGHLANDS RANCH              CO     80126  SFD          7.375     6.250  $1,968.43      360   1-Mar-29   $284,783.13
4929178   GAITHERSBURG                 MD     20886  SFD          6.625     6.250  $1,581.57      360   1-Mar-29   $246,782.08
4929397   SHELTON                      CT     06484  SFD          6.000     5.733  $1,672.75      360   1-Mar-29   $278,722.25
4929532   DANA POINT                   CA     92629  LCO          7.250     6.250  $3,756.41      360   1-Mar-29   $550,220.43
4929711   NIWOT                        CO     80503  SFD          6.625     6.250  $2,045.80      360   1-Feb-29   $318,934.66
4929885   CHATHAM                      NJ     07928  SFD          6.375     6.108  $2,932.19      360   1-Feb-29   $469,127.06
4929890   SCOTTSDALE                   AZ     85260  SFD          7.000     6.250  $1,674.90      360   1-Mar-29   $251,543.64
4930074   MANDEVILLE                   LA     70471  SFD          6.625     6.250  $1,544.44      360   1-Jan-29   $240,558.02
4930227   WOODSTOCK                    GA     30188  SFD          6.500     6.233  $1,884.20      360   1-Apr-29   $298,100.00
4930353   EDEN PRAIRIE                 MN     55347  SFD          6.500     6.233  $1,837.43      360   1-Mar-29   $290,437.20
4931183   ROCKLIN                      CA     95765  SFD          6.750     6.250  $1,640.63      360   1-Feb-29   $252,513.20
4931228   SAN DIMAS                    CA     91773  SFD          6.625     6.250  $2,095.42      360   1-Mar-29   $326,961.27
4931398   PORTLAND                     OR     97229  SFD          6.250     5.983  $1,871.17      360   1-Mar-29   $303,611.64
4931772   FAIRFAX                      VA     22031  SFD          7.125     6.250  $1,819.05      360   1-Apr-29   $270,000.00
4931800   EDMOND                       OK     73034  SFD          6.375     6.108  $1,559.68      360   1-Feb-29   $249,535.66
4931968   MIDDLEFIELD                  CT     06455  SFD          6.625     6.250  $1,613.59      360   1-Feb-29   $251,554.09
4932643   SMYRNA                       GA     30126  SFD          6.625     6.250  $1,876.11      360   1-Dec-28   $291,957.38
4932766   DOYLESTOWN                   PA     18901  SFD          6.125     5.858  $1,481.36      360   1-Mar-29   $243,563.04
4933460   WILTON                       CT     06897  SFD          6.250     5.983  $3,211.59      360   1-Mar-29   $521,105.08
4933797   ATLANTA                      GA     30324  SFD          7.250     6.250  $2,639.35      360   1-Feb-29   $386,294.52
4933924   WHEATON                      IL     60187  SFD          6.875     6.250  $4,270.04      360   1-Apr-29   $650,000.00
4934509   LIBERTYVILLE                 IL     60048  SFD          6.625     6.250  $3,355.23      360   1-Feb-29   $523,072.81
4934577   MILL CREEK                   WA     98012  SFD          6.625     6.250  $2,305.12      360   1-Feb-29   $359,041.87
4934641   CARLISLE                     MA     01741  SFD          6.625     6.250  $3,617.76      360   1-Feb-29   $564,000.27
4934661   YARDLEY                      PA     19067  SFD          7.000     6.250  $1,995.91      360   1-Mar-29   $299,754.09
4934807   PLANO                        TX     75025  SFD          7.375     6.250  $1,836.86      360   1-Apr-29   $265,950.00
4934879   HIGHLAND                     MD     20777  SFD          6.125     5.858  $1,471.33      360   1-Feb-29   $241,678.08
4934951   ANNANDALE                    NJ     08801  SFD          7.125     6.250  $1,824.10      360   1-Mar-29   $270,533.48
4935430   ALEXANDRIA                   VA     22314  SFD          6.250     5.983  $1,999.24      360   1-Feb-29   $324,082.21
4935468   ELKHART                      IN     46516  SFD          6.500     6.233  $1,621.26      360   1-Apr-29   $256,500.00
4935508   MATTHEWS                     NC     28105  SFD          7.000     6.250  $1,952.67      360   1-Jan-29   $292,774.02
4935713   ENGLEWOOD                    CO     80111  SFD          6.750     6.250  $1,770.68      360   1-Mar-29   $272,764.95
4936379   WARREN                       NJ     07059  SFD          6.625     6.250  $2,529.23      360   1-Mar-29   $394,651.50
4936517   LIVERMORE                    CA     94550  SFD          6.125     5.858  $1,822.84      360   1-Feb-29   $299,415.33
4936856   DARIEN                       CT     06820  SFD          6.500     6.233  $2,877.18      360   1-Apr-29   $455,200.00
4937030   WESTFIELD                    NJ     07090  SFD          6.375     6.108  $3,034.51      360   1-Feb-29   $485,496.59
4937786   LIBERTYVILLE                 IL     60048  SFD          6.875     6.250  $2,049.62      360   1-Mar-29   $311,737.88
4937891   RANDOLPH                     NJ     07869  SFD          6.375     6.108  $1,902.81      360   1-Mar-29   $304,717.50
4937979   SIMI VALLEY                  CA     93065  SFD          6.625     6.250  $2,215.80      360   1-Feb-29   $345,036.78
4938769   CINCINNATI                   OH     45244  SFD          6.750     6.250  $1,597.50      360   1-Feb-29   $245,872.17
4938961   JACKSONVILLE                 FL     32225  SFD          6.500     6.233  $2,479.29      360   1-Mar-29   $391,895.40
4939000   RALEIGH                      NC     27614  SFD          6.375     6.108  $1,570.91      360   1-Mar-29   $251,566.78
4939455   SANDY HOOK                   CT     06482  SFD          6.500     6.233  $2,212.24      360   1-Apr-29   $350,000.00
4939471   CHESTER                      NJ     07930  SFD          6.625     6.250  $2,523.79      360   1-Mar-29   $393,802.25
4939485   LAKE ORION                   MI     48360  SFD          6.250     5.983  $1,847.16      360   1-Mar-29   $299,712.50
4940139   HOUSTON                      TX     77024  SFD          6.500     6.233  $3,868.26      360   1-Feb-29   $610,890.48
4940301   NORTHPORT                    NY     11768  SFD          6.250     5.983  $1,847.16      360   1-Mar-29   $299,715.34
4940390   ALPHARETTA                   GA     30005  SFD          6.625     6.250  $2,304.48      360   1-Feb-29   $359,263.18
4940637   CHICAGO                      IL     60610  SFD          6.375     6.108  $3,718.27      360   1-Mar-29   $595,447.98
4940638   MONKTON                      MD     21111  SFD          6.125     5.858  $2,430.45      360   1-Mar-29   $399,611.22
4940677   CAMARILLO                    CA     93012  SFD          6.625     6.250  $2,561.25      360   1-Feb-29   $399,292.21
4940782   FISHKILL                     NY     12524  SFD          6.875     6.250  $2,434.58      360   1-Mar-29   $370,288.65
4940837   SAN ANTONIO                  TX     78209  SFD          6.750     6.250  $1,608.53      360   1-Feb-29   $247,571.74
4940891   NASHVILLE                    TN     37221  SFD          6.000     5.733  $2,458.16      360   1-Mar-29   $409,591.84
4940969   CROTON ON HUDSON             NY     10520  SFD          6.625     6.250  $3,294.08      360   1-Apr-29   $514,450.00
4941181   NEWTOWN                      PA     18940  SFD          6.500     6.233  $1,721.76      360   1-Mar-29   $272,153.74
4941271   NAPERVILLE                   IL     60540  SFD          6.625     6.250  $2,151.45      360   1-Mar-29   $335,703.55
4941296   SAINT JOSEPH                 MI     49085  SFD          6.375     6.108  $1,946.48      360   1-Feb-29   $311,420.50
4941368   SAVANNAH                     GA     31405  SFD          6.250     5.983  $1,600.87      360   1-Feb-29   $259,505.31
4941758   LOUISVILLE                   KY     40241  SFD          6.625     6.250  $2,561.25      360   1-Feb-29   $399,292.21
4942212   MADBURY                      NH     03820  SFD          6.875     6.250  $1,970.79      360   1-Apr-29   $300,000.00
4942386   MEDINA                       OH     44256  SFD          6.500     6.233  $2,098.47      360   1-Mar-29   $331,699.86
4942442   CARMEL                       IN     46032  SFD          6.500     6.233  $2,528.28      360   1-Mar-29   $399,638.39
4942464   MENDHAM                      NJ     07945  SFD          6.625     6.250  $3,009.47      360   1-Feb-29   $469,168.35
4942630   BARRINGTON                   IL     60010  SFD          6.625     6.250  $2,145.05      360   1-Mar-29   $334,704.43
4943101   LARKSPUR                     CO     80118  SFD          7.500     6.250  $1,753.63      360   1-Apr-29   $250,800.00
4943117   BELLEVUE                     WA     98006  SFD          6.500     6.233  $2,844.31      360   1-Feb-29   $449,184.18
4943612   GENEVA                       IL     60134  SFD          7.375     6.250  $2,175.29      360   1-Mar-29   $314,710.34
4943808   SAN RAFAEL                   CA     94903  SFD          6.750     6.250  $2,594.40      360   1-Apr-29   $400,000.00
4944043   CHAPPAQUA                    NY     10514  SFD          6.875     6.250  $2,464.80      360   1-Feb-29   $374,567.76
4944202   NAPERVILLE                   IL     60564  SFD          6.500     6.233  $2,320.96      360   1-Apr-29   $367,200.00
4944253   CHELMSFORD                   MA     01824  SFD          5.750     5.483  $1,582.65      360   1-Mar-29   $270,916.85
4944458   KILDEER                      IL     60047  SFD          6.375     6.108  $1,840.42      360   1-Feb-29   $294,452.09
4944523   THE WOODLANDS                TX     77382  SFD          6.875     6.250  $1,940.90      360   1-Mar-29   $295,201.78
4944640   SUNNYVALE                    CA     94086  LCO          6.875     6.250  $1,970.79      360   1-Feb-29   $299,393.90
4944723   CROWNSVILLE                  MD     21032  SFD          6.250     5.983  $2,231.98      360   1-Mar-29   $362,156.04
4944754   MATTHEWS                     NC     28105  SFD          6.625     6.250  $2,054.44      360   1-Jan-29   $319,996.05
4944820   GLENVIEW                     IL     60025  SFD          7.250     6.250  $2,179.56      360   1-Mar-29   $319,250.75
4944835   BELLE MEAD                   NJ     08502  SFD          6.375     6.108  $1,948.35      360   1-Mar-29   $311,652.10
4944851   PRINCETON                    NJ     08540  SFD          6.500     6.233  $2,844.31      360   1-Mar-29   $449,593.19
4944974   COLLEYVILLE                  TX     76034  SFD          6.625     6.250  $2,028.51      360   1-Feb-29   $316,239.44
4945199   BILLINGS                     MT     59101  SFD          7.125     6.250  $1,849.36      360   1-Mar-29   $274,280.48
4945260   NAPERVILLE                   IL     60565  SFD          7.250     6.250  $2,627.75      360   1-Mar-29   $384,899.50
4945486   IPSWICH                      MA     01938  SFD          6.375     6.108  $2,819.90      360   1-Mar-29   $451,581.35
4945519   SIMSBURY                     CT     06070  SFD          6.750     6.250  $1,844.62      360   1-Mar-29   $284,155.13
4946098   NEW PROVIDENCE               NJ     07974  SFD          7.000     6.250  $1,832.91      360   1-Feb-29   $275,047.03
4946170   MARIETTA                     GA     30068  SFD          6.125     5.858  $2,266.39      360   1-Feb-29   $372,273.07
4946186   MORRISON                     CO     80465  SFD          6.625     6.250  $1,690.43      360   1-Mar-29   $263,767.07
4946228   WOODBURY                     MN     55125  SFD          7.000     6.250  $2,021.86      360   1-Mar-29   $303,650.89
4946229   PHOENIX                      MD     21131  SFD          6.625     6.250  $1,984.97      360   1-Mar-29   $309,726.49
4946705   AVON                         CT     06001  SFD          6.500     6.233  $2,209.08      360   1-Feb-29   $348,866.38
4946722   COLLIERVILLE                 TN     38017  SFD          6.250     5.983  $1,847.16      360   1-Apr-29   $300,000.00
4946746   COSTA MESA                   CA     92627  SFD          6.625     6.250  $1,792.88      360   1-Mar-29   $279,752.95
4946905   PORTAGE                      MI     49024  SFD          6.125     5.858  $1,476.50      360   1-Feb-29   $242,526.42
4946989   TRABUCO CANYON               CA     92679  SFD          7.125     6.250  $2,288.96      360   1-Apr-29   $339,750.00
4947318   WILDWOOD                     MO     63038  SFD          6.375     6.108  $2,214.74      360   1-Apr-29   $355,000.00
4947343   ANAHEIM                      CA     92808  SFD          6.500     6.233  $1,908.85      360   1-Mar-29   $301,726.98
4947501   PROSPECT                     KY     40059  SFD          6.875     6.250  $2,049.62      360   1-Feb-29   $311,474.26
4947741   MEQUON                       WI     53092  SFD          6.500     6.233  $2,275.45      360   1-Feb-29   $359,347.34
4948054   BROOKEVILLE                  MD     20833  SFD          6.500     6.233  $2,224.88      360   1-Feb-29   $351,361.85
4948083   HIGHLANDS RANCH              CO     80126  SFD          7.000     6.250  $1,796.32      360   1-Jan-29   $269,332.16
4948270   MASON                        OH     45040  SFD          6.500     6.233  $2,020.09      360   1-Apr-29   $319,600.00
4948362   WEST LINN                    OR     97068  SFD          7.375     6.250  $4,662.06      360   1-Feb-29   $673,969.60
4948430   ALBUQUERQUE                  NM     87112  SFD          6.875     6.250  $2,594.87      360   1-Feb-29   $394,334.40
4948462   WINCHESTER                   MA     01890  SFD          6.500     6.233  $2,288.09      360   1-Mar-29   $361,672.74
4948487   CYPRESS                      TX     77429  SFD          6.875     6.250  $2,167.87      360   1-Apr-29   $330,000.00
4948783   LAFAYETTE                    CA     94549  SFD          6.125     5.858  $2,100.21      360   1-Apr-29   $345,650.00
4948844   HIGHLANDS RANCH              CO     80126  SFD          7.250     6.250  $1,749.79      360   1-Apr-29   $256,500.00
4948874   CONCORD                      MA     01742  SFD          6.125     5.858  $1,749.92      360   1-Mar-29   $287,720.08
4949065   NEW YORK                     NY     10128  LCO          6.125     5.858  $3,645.67      360   1-Mar-29   $599,416.83
4949103   HOLLAND                      PA     18966  SFD          6.500     6.233  $1,999.24      360   1-Mar-29   $316,014.05
4949301   SCOTTSDALE                   AZ     85254  SFD          7.125     6.250  $1,785.70      360   1-Mar-29   $264,838.03
4949395   GREENVILLE                   SC     29615  SFD          6.000     5.733  $2,098.43      360   1-Mar-29   $349,476.57
4949468   SAN DIEGO                    CA     92128  SFD          7.250     6.250  $2,728.71      360   1-Apr-29   $400,000.00
4949517   GRANITE BAY                  CA     95746  SFD          6.250     5.983  $1,607.03      360   1-Mar-29   $260,752.34
4949528   SCOTTSDALE                   AZ     85259  SFD          7.000     6.250  $2,315.26      360   1-Mar-29   $347,714.74
4949591   DUXBURY                      MA     02332  SFD          6.750     6.250  $2,367.39      360   1-Apr-29   $365,000.00
4949606   PLANO                        TX     75093  SFD          6.625     6.250  $1,696.83      360   1-Mar-29   $264,766.19
4949768   RIDGEFIELD                   CT     06877  SFD          6.500     6.233  $2,275.45      360   1-Mar-29   $359,674.55
4949819   FAIRFAX STATION              VA     22039  SFD          7.000     6.250  $2,328.56      360   1-Feb-29   $349,424.54
4949885   GREENVILLE                   DE     19807  SFD          6.875     6.250  $2,135.02      360   1-Mar-29   $324,726.96
4950003   WILTON                       CT     06897  SFD          6.625     6.250  $4,162.03      360   1-Apr-29   $650,000.00
4950005   MANDEVILLE                   LA     70448  SFD          7.000     6.250  $2,022.52      360   1-Mar-29   $303,750.81
4950114   GREEN OAKS                   IL     60048  SFD          6.625     6.250  $1,792.88      360   1-Jan-29   $279,254.77
4950431   SKILLMAN                     NJ     08558  SFD          6.625     6.250  $2,433.51      360   1-Apr-29   $380,050.00
4950619   CUPERTINO                    CA     95014  SFD          7.125     6.250  $2,829.62      360   1-Mar-29   $419,664.13
4950652   SANTA ANA                    CA     92705  SFD          6.500     6.233  $1,896.21      360   1-Mar-29   $299,728.79
4950764   BARTLESVILLE                 OK     74006  SFD          6.625     6.250  $1,863.30      360   1-Jan-29   $290,225.51
4950779   CHICAGO                      IL     60610  SFD          6.000     5.733  $2,609.25      360   1-Mar-29   $434,766.75
4950825   RIDGEWOOD                    NJ     07450  SFD          6.500     6.233  $3,476.38      360   1-Mar-29   $549,502.79
4950854   CAMPBELL                     CA     95008  SFD          6.875     6.250  $3,678.81      360   1-Mar-29   $559,529.52
4950877   OLNEY                        MD     20832  SFD          6.500     6.233  $1,907.27      360   1-Mar-29   $301,477.21
4951093   WOODSTOCK                    GA     30188  SFD          6.625     6.250  $1,958.40      360   1-Mar-29   $305,580.15
4951275   DANVILLE                     CA     94526  SFD          6.250     5.983  $2,001.09      360   1-Mar-29   $324,691.62
4951399   OAKLAND                      CA     94611  SFD          6.750     6.250  $2,381.66      360   1-Mar-29   $366,883.84
4951513   NEW YORK                     NY     10017  HCO          6.500     6.233  $3,476.38      360   1-Apr-29   $550,000.00
4951606   FOSTER CITY                  CA     94404  LCO          6.625     6.250  $1,821.05      360   1-Mar-29   $284,149.07
4951702   GLENDALE                     CA     91207  SFD          6.375     6.108  $2,595.30      360   1-Mar-29   $415,614.70
4951713   BOCA RATON                   FL     33498  SFD          7.500     6.250  $1,730.56      360   1-Apr-29   $247,500.00
4951788   PITTSFORD                    NY     14534  SFD          6.125     5.858  $1,883.60      360   1-Apr-29   $310,000.00
4952095   SCOTTSDALE                   AZ     85259  SFD          6.250     5.983  $2,462.87      360   1-Apr-29   $400,000.00
4952114   SAN JOSE                     CA     95120  SFD          7.125     6.250  $2,134.35      360   1-Feb-29   $316,291.80
4952481   DENVILLE                     NJ     07834  SFD          6.500     6.233  $2,471.39      360   1-Mar-29   $390,646.53
4952492   RANDOLPH                     NJ     07869  SFD          6.250     5.983  $2,290.47      360   1-Apr-29   $372,000.00
4952519   COTO DE CAZA                 CA     92679  SFD          7.000     6.250  $3,033.78      360   1-Mar-29   $455,626.22
4952555   ORLANDO                      FL     32817  SFD          6.500     6.233  $1,630.74      360   1-Mar-29   $257,766.76
4952670   TRUMBULL                     CT     06611  SFD          6.000     5.733  $1,798.66      360   1-Feb-29   $299,401.19
4952726   BARRINGTON                   IL     60010  LCO          6.375     6.108  $1,647.02      360   1-Mar-29   $263,755.48
4952746   ROSWELL                      GA     30075  SFD          6.500     6.233  $1,663.61      360   1-Mar-29   $262,962.06
4952779   THE WOODLANDS                TX     77381  SFD          6.500     6.233  $2,200.55      360   1-Mar-29   $347,835.26
4952781   DALLAS                       TX     75225  SFD          6.875     6.250  $3,074.43      360   1-Mar-29   $467,606.82
4952815   SETAUKET                     NY     11733  SFD          6.250     5.983  $1,539.30      360   1-Mar-29   $248,906.48
4952987   AURORA                       CO     80016  SFD          6.500     6.233  $1,801.40      360   1-Mar-29   $284,742.35
4953163   WALNUT CREEK                 CA     94595  SFD          6.625     6.250  $1,920.94      360   1-Apr-29   $300,000.00
4953198   LAS FLORES                   CA     92688  SFD          6.750     6.250  $2,197.46      360   1-Mar-29   $338,508.29
4953288   KINNELON                     NJ     07405  SFD          6.500     6.233  $2,588.96      360   1-Mar-29   $409,229.71
4953307   WEXFORD                      PA     15090  SFD          6.250     5.983  $1,724.01      360   1-Mar-29   $279,734.32
4953354   MADISON                      CT     06443  SFD          6.500     6.233  $1,763.47      360   1-Mar-29   $278,747.78
4953385   SAN FRANCISCO                CA     94109  LCO          6.250     5.983  $2,019.56      360   1-Mar-29   $327,688.77
4953762   NAPERVILLE                   IL     60564  SFD          6.750     6.250  $1,796.62      360   1-Mar-29   $276,761.51
4953769   BARRINGTON                   IL     60010  SFD          6.875     6.250  $3,279.39      360   1-Feb-29   $498,358.82
4953861   BETHLEHEM                    PA     18015  SFD          6.625     6.250  $2,177.06      360   1-Mar-29   $339,700.02
4954349   ANNANDALE                    VA     22003  SFD          6.375     6.108  $2,363.22      360   1-Mar-29   $378,449.16
4954619   MILL CREEK                   WA     98012  SFD          6.375     6.108  $1,617.08      360   1-Mar-29   $258,959.92
4954625   RIDGEFIELD                   CT     06877  SFD          6.125     5.858  $1,944.36      360   1-Mar-29   $319,688.97
4954631   SMARTVILLE                   CA     95977  SFD          7.125     6.250  $1,664.09      360   1-Mar-29   $246,802.47
4954690   AUSTIN                       TX     78733  SFD          6.375     6.108  $2,121.16      360   1-Mar-29   $339,685.09
4954760   CINCINNATI                   OH     45208  SFD          6.750     6.250  $3,891.59      360   1-Feb-29   $598,963.91
4954828   KEY BISCAYNE                 FL     33149  HCO          7.375     6.250  $1,771.59      360   1-Apr-29   $256,500.00
4954883   BAINBRIDGE ISLAND            WA     98110  SFD          6.250     5.983  $1,917.04      360   1-Apr-29   $311,350.00
4955042   THE WOODLANDS                TX     77381  SFD          6.750     6.250  $2,270.10      360   1-Mar-29   $349,698.65
4955057   THE WOODLANDS                TX     77382  SFD          6.500     6.233  $1,898.42      360   1-Feb-29   $299,800.31
4955276   TUCSON                       AZ     85749  SFD          7.250     6.250  $1,841.88      360   1-Mar-29   $269,789.37
4955326   SOUTHLAKE                    TX     76092  SFD          7.125     6.250  $2,419.33      360   1-Mar-29   $358,812.83
4955367   CRESTWOOD                    KY     40014  SFD          6.750     6.250  $1,779.76      360   1-Feb-29   $273,926.15
4955511   LAKE BLUFF                   IL     60044  SFD          6.375     6.108  $3,212.93      360   1-Mar-29   $514,523.01
4955558   KAILUA                       HI     96734  SFD          6.500     6.233  $2,629.41      360   1-Apr-29   $416,000.00
4955573   LOS ALTOS                    CA     94022  SFD          6.750     6.250  $3,243.00      360   1-Mar-29   $499,569.50
4955834   ROCKVILLE                    MD     20855  SFD          7.750     6.250  $2,865.65      360   1-Feb-29   $399,433.54
4956113   NEWPORT COAST                CA     92657  SFD          6.625     6.250  $3,470.49      360   1-Mar-29   $541,521.80
4956156   MORGAN HILL                  CA     95037  SFD          7.000     6.250  $2,217.13      360   1-Mar-29   $332,976.83
4956236   COLLEYVILLE                  TX     76034  SFD          6.250     5.983  $2,647.59      360   1-Mar-29   $429,591.99
4956444   COLLIERVILLE                 TN     38017  SFD          6.500     6.233  $2,117.43      360   1-Apr-29   $335,000.00
4956545   BETHESDA                     MD     20816  SFD          6.125     5.858  $2,114.49      360   1-Apr-29   $348,000.00
4956572   OVERLAND PARK                KS     66221  SFD          6.625     6.250  $1,824.89      360   1-Mar-29   $284,748.55
4956930   SAN DIEGO                    CA     92129  SFD          7.250     6.250  $1,891.00      360   1-Apr-29   $277,200.00
4957068   NORWALK                      CT     06851  SFD          6.750     6.250  $2,438.73      360   1-Mar-29   $375,676.27
4957176   CARY                         IL     60013  SFD          6.250     5.983  $1,526.98      360   1-Mar-29   $247,764.69
4957260   MEDFORD                      NJ     08055  SFD          7.250     6.250  $2,489.95      360   1-Mar-29   $364,715.26
4957673   TIBURON                      CA     94920  LCO          7.375     6.250  $1,795.76      360   1-Apr-29   $260,000.00
4957948   MARIETTA                     GA     30062  SFD          7.125     6.250  $2,016.11      360   1-Mar-29   $299,010.69
4958151   DANBURY                      CT     06811  SFD          7.000     6.250  $2,361.83      360   1-Apr-29   $355,000.00
4958158   SUGAR LAND                   TX     77479  SFD          6.000     5.733  $2,245.02      360   1-Mar-29   $374,077.23
4958167   AVON                         CT     06001  SFD          6.125     5.858  $1,735.34      360   1-Apr-29   $285,600.00
4958212   MISSION VIEJO                CA     92692  SFD          6.625     6.250  $2,612.47      360   1-Mar-29   $407,640.03
4958319   JACKSONVILLE                 FL     32259  SFD          7.375     6.250  $1,913.17      360   1-Feb-29   $276,577.16
4958545   FRANKLIN                     MA     02038  SFD          6.625     6.250  $1,706.43      360   1-Mar-29   $266,264.87
4958713   NOVI                         MI     48374  SFD          6.750     6.250  $2,276.58      360   1-Mar-29   $350,697.80
4958787   STILLWATER                   MN     55082  SFD          6.625     6.250  $1,620.95      360   1-Mar-29   $252,626.65
4959283   ROSEVILLE                    CA     95747  SFD          6.250     5.983  $1,551.61      360   1-Mar-29   $251,760.89
4959316   RIDGEFIELD                   CT     06877  SFD          6.125     5.858  $3,038.06      360   1-Apr-29   $500,000.00
4959356   ALPHARETTA                   GA     30005  SFD          6.500     6.233  $2,045.38      360   1-Mar-29   $323,307.45
4959495   SAN FRANCISCO                CA     94114  LCO          7.625     6.250  $2,831.18      360   1-Mar-29   $399,710.49
4959595   THE WOODLANDS                TX     77381  SFD          6.500     6.233  $1,620.63      360   1-Mar-29   $256,168.20
4959834   TUSTIN                       CA     92782  LCO          7.250     6.250  $1,859.96      360   1-Mar-29   $272,437.30
4960040   ARLINGTON                    VA     22209  SFD          6.750     6.250  $1,968.50      360   1-Apr-29   $303,500.00
4960477   BOSTON                       MA     02116  LCO          6.500     6.233  $2,932.80      360   1-Apr-29   $464,000.00
4961026   DANVILLE                     CA     94506  SFD          6.625     6.250  $2,401.17      360   1-Apr-29   $375,000.00
4961149   SAN JOSE                     CA     95124  SFD          6.500     6.233  $2,701.78      360   1-Mar-29   $427,063.57
4961340   RIDGEFIELD                   CT     06877  SFD          6.625     6.250  $2,228.29      360   1-Apr-29   $348,000.00
4961715   NORTHRIDGE                   CA     91326  SFD          7.250     6.250  $2,067.34      360   1-Mar-29   $302,813.59
4961802   SOUTHLAKE                    TX     76092  SFD          6.125     5.858  $2,743.97      360   1-Mar-29   $451,161.07
4961906   CHESTER                      NJ     07930  SFD          6.250     5.983  $2,155.02      360   1-Apr-29   $350,000.00
4961931   BOULDER                      CO     80303  SFD          6.375     6.108  $2,021.34      360   1-Mar-29   $323,699.91
4962025   GREENSBORO                   NC     27455  SFD          6.375     6.108  $2,563.17      360   1-Mar-29   $410,469.47
4962109   LONG GROVE                   IL     60047  SFD          6.500     6.233  $3,400.53      360   1-Mar-29   $537,513.64
4962441   IRVINE                       CA     92614  SFD          6.250     5.983  $2,339.73      360   1-Apr-29   $380,000.00
4962461   CLAYTON                      CA     94517  SFD          7.375     6.250  $2,389.74      360   1-Apr-29   $346,000.00
4962603   CHICAGO                      IL     60611  HCO          6.500     6.233  $1,681.31      360   1-Mar-29   $265,759.52
4962719   TOMBALL                      TX     77375  SFD          6.875     6.250  $1,918.24      360   1-Mar-29   $291,754.68
4963266   PLEASANTON                   CA     94588  SFD          6.750     6.250  $1,878.35      360   1-Apr-29   $289,600.00
4963272   LAKE FOREST                  IL     60045  SFD          6.625     6.250  $3,521.72      360   1-Apr-29   $550,000.00
4963353   BELLE MEAD                   NJ     08502  SFD          6.125     5.858  $1,519.03      360   1-Mar-29   $249,757.01
4963555   SUPERIOR                     CO     80027  SFD          6.625     6.250  $1,736.53      360   1-Feb-29   $270,720.12
4963704   VERNON HILLS                 IL     60061  SFD          6.500     6.233  $3,097.14      360   1-Apr-29   $490,000.00
4963931   ROSEMONT                     PA     19010  SFD          7.000     6.250  $2,185.52      360   1-Feb-29   $327,959.89
4964217   SOUTHLAKE                    TX     76092  SFD          6.375     6.108  $2,495.48      360   1-Mar-29   $399,629.52
4964374   BRIDGEWATER                  MA     02324  SFD          7.375     6.250  $1,880.36      360   1-Feb-29   $271,834.41
4964406   LA VERNE                     CA     91750  SFD          7.000     6.250  $1,946.01      360   1-Mar-29   $292,260.24
4964452   KALAMAZOO                    MI     49009  SFD          6.500     6.233  $1,791.92      360   1-Mar-29   $283,243.71
4964626   CINCINNATI                   OH     45244  SFD          6.250     5.983  $2,265.23      360   1-Mar-29   $367,550.92
4964697   SUGAR LAND                   TX     77479  SFD          6.625     6.250  $2,145.05      360   1-Mar-29   $334,704.43
4964754   ELY                          IA     52227  SFD          6.125     5.858  $1,749.92      360   1-Mar-29   $287,720.08
4964945   JONESBOROUGH                 TN     37659  SFD          6.500     6.233  $1,870.93      360   1-Mar-29   $295,732.40
4964961   SAN DIEGO                    CA     92122  LCO          7.250     6.250  $2,394.44      360   1-Feb-29   $350,450.72
4964965   THE WOODLANDS                TX     77381  SFD          6.500     6.233  $1,774.85      360   1-Mar-29   $280,467.11
4965015   TUCSON                       AZ     85749  SFD          6.750     6.250  $1,786.24      360   1-Apr-29   $275,400.00
4965063   NEWTOWN                      PA     18940  SFD          6.500     6.233  $1,643.38      360   1-Apr-29   $260,000.00
4965129   WOODINVILLE                  WA     98072  SFD          6.875     6.250  $2,989.03      360   1-Mar-29   $454,617.74
4965295   SPARTA                       NJ     07871  SFD          6.875     6.250  $1,793.42      360   1-Apr-29   $273,000.00
4965327   FLANDERS                     NJ     07836  SFD          6.750     6.250  $1,854.67      360   1-Mar-29   $285,703.80
4965657   FRANKLIN                     TN     37069  SFD          6.625     6.250  $2,081.02      360   1-Mar-29   $324,713.25
4965734   PORTAGE                      MI     49024  SFD          6.500     6.233  $2,440.42      360   1-Apr-29   $386,100.00
4965829   SAN JOSE                     CA     95123  SFD          6.500     6.233  $2,603.49      360   1-Mar-29   $411,527.64
4965839   SAN JOSE                     CA     95135  SFD          6.375     6.108  $2,695.12      360   1-Mar-29   $431,599.88
4965866   MORAGA                       CA     94556  SFD          6.125     5.858  $2,466.90      360   1-Feb-29   $405,208.77
4966002   CLINTON                      NJ     08809  SFD          6.250     5.983  $1,812.68      360   1-Apr-29   $294,400.00
4966059   REDONDO BEACH                CA     90277  SFD          6.500     6.233  $1,946.77      360   1-Apr-29   $308,000.00
4966184   SAN JOSE                     CA     95138  SFD          6.250     5.983  $3,250.38      360   1-Mar-29   $527,399.10
4966194   WESTLAKE                     OH     44145  SFD          6.500     6.233  $1,719.23      360   1-Apr-29   $272,000.00
4966219   PHOENIX                      AZ     85012  SFD          7.125     6.250  $2,504.22      360   1-Mar-29   $371,402.75
4966242   HARTLAND                     WI     53029  SFD          6.750     6.250  $3,114.90      360   1-Apr-29   $480,250.00
4966354   RAMONA                       CA     92065  SFD          7.125     6.250  $1,824.10      360   1-Feb-29   $270,315.67
4966679   BROOKLINE                    MA     02445  LCO          6.875     6.250  $3,258.37      360   1-Apr-29   $496,000.00
4966695   BEAVERTON                    OR     97007  SFD          6.625     6.250  $1,661.93      360   1-Jan-29   $258,859.22
4966824   FITCHBURG                    WI     53711  SFD          6.875     6.250  $2,246.70      360   1-Feb-29   $341,423.71
4966829   WELLESLEY                    MA     02481  SFD          6.250     5.983  $3,083.52      360   1-Mar-29   $500,324.81
4966892   CUMMING                      GA     30041  SFD          6.375     6.108  $1,834.18      360   1-Mar-29   $293,727.70
4966915   BERWYN                       PA     19312  SFD          6.250     5.983  $2,004.16      360   1-Apr-29   $325,500.00
4966948   ALPHARETTA                   GA     30022  SFD          6.500     6.233  $2,382.11      240   1-Mar-19   $318,848.52
4966968   LOS ANGELES                  CA     90027  SFD          6.750     6.250  $2,153.35      360   1-Mar-29   $331,714.15
4967088   SMYRNA                       GA     30080  SFD          6.750     6.250  $2,037.25      360   1-Mar-29   $313,829.56
4967331   RIDGEFIELD                   CT     06877  SFD          7.125     6.250  $2,468.51      360   1-Mar-29   $366,106.99
4967405   GURNEE                       IL     60031  SFD          6.625     6.250  $1,696.83      360   1-Apr-29   $265,000.00
4967570   ORINDA                       CA     94563  SFD          6.125     5.858  $2,460.83      360   1-Apr-29   $405,000.00
4967610   THOUSAND OAKS                CA     91362  SFD          6.375     6.108  $2,086.23      360   1-Mar-29   $334,090.27
4967646   HOUSTON                      TX     77024  SFD          6.500     6.233  $4,108.45      360   1-Apr-29   $650,000.00
4967748   LITTLETON                    CO     80124  SFD          6.875     6.250  $2,112.69      360   1-Apr-29   $321,600.00
4967780   CENTREVILLE                  VA     20120  SFD          6.750     6.250  $1,605.29      360   1-Apr-29   $247,500.00
4967958   MORRISVILLE                  NC     27560  SFD          6.750     6.250  $2,760.44      360   1-Mar-29   $425,233.56
4968002   MCKINNEY                     TX     75070  SFD          6.375     6.108  $2,214.74      360   1-Mar-29   $354,671.20
4968016   NAPERVILLE                   IL     60565  SFD          6.625     6.250  $1,959.36      360   1-Apr-29   $306,000.00
4968021   BARRINGTON HILLS             IL     60010  SFD          6.500     6.233  $4,108.45      360   1-Mar-29   $649,412.38
4968130   PLANO                        TX     75093  SFD          6.500     6.233  $2,580.11      360   1-Mar-29   $407,830.97
4968419   ANNANDALE                    NJ     08801  SFD          6.500     6.233  $2,856.95      360   1-Apr-29   $452,000.00
4968440   WEST CHESTER                 PA     19382  SFD          6.750     6.250  $2,983.56      360   1-Mar-29   $459,603.94
4968522   FLOWER MOUND                 TX     75028  SFD          6.125     5.858  $2,187.40      360   1-Mar-29   $359,650.10
4968592   NAVARRE                      FL     32566  SFD          6.875     6.250  $2,108.75      360   1-Mar-29   $320,730.31
4968685   EASTON                       CT     06612  SFD          6.750     6.250  $1,751.22      360   1-Feb-29   $269,533.75
4968689   AUSTIN                       TX     78703  SFD          6.125     5.858  $1,822.84      360   1-Mar-29   $299,708.41
4968743   WELLESLEY                    MA     02181  SFD          6.750     6.250  $3,243.00      360   1-Apr-29   $500,000.00
4968760   HAWTHORN WOODS               IL     60047  SFD          6.750     6.250  $2,801.95      360   1-Mar-29   $431,611.62
4968908   ALPHARETTA                   GA     30004  SFD          6.500     6.233  $1,738.19      360   1-Mar-29   $274,751.39
4968937   ALBUQUERQUE                  NM     87112  SFD          6.750     6.250  $1,711.98      360   1-Apr-29   $263,950.00
4968952   SAN JOSE                     CA     95120  SFD          6.625     6.250  $2,196.27      360   1-Mar-29   $332,697.38
4969044   HINGHAM                      MA     02043  SFD          6.500     6.233  $1,693.95      360   1-Mar-29   $267,757.72
4969081   GAINESVILLE                  GA     30506  SFD          6.750     6.250  $2,983.56      360   1-Mar-29   $459,603.94
4969342   TULSA                        OK     74137  SFD          6.875     6.250  $2,128.45      360   1-Apr-29   $324,000.00
4969563   BASKING RIDGE                NJ     07920  SFD          6.125     5.858  $3,038.06      360   1-Mar-29   $499,514.02
4969625   ALPHARETTA                   GA     30005  SFD          6.875     6.250  $2,026.17      360   1-Mar-29   $308,170.88
4969685   SANDY HOOK                   CT     06482  SFD          6.500     6.233  $1,810.25      360   1-Mar-29   $286,141.08
4969701   FLEMINGTON                   NJ     08822  SFD          6.000     5.733  $2,220.74      360   1-Apr-29   $370,400.00
4969964   MENOMONEE FALLS              WI     53051  SFD          7.250     6.250  $1,799.59      360   1-Mar-29   $263,594.20
4970006   HINSDALE                     IL     60521  SFD          6.250     5.983  $3,999.09      360   1-Apr-29   $649,500.00
4970135   ALPHARETTA                   GA     30022  SFD          6.250     5.983  $1,620.57      360   1-Mar-29   $262,950.26
4970151   RIDGEWOOD                    NJ     07450  SFD          6.125     5.858  $1,944.36      360   1-Apr-29   $320,000.00
4970191   TRUMBULL                     CT     06611  SFD          6.000     5.733  $1,678.75      360   1-Mar-29   $279,721.25
4970667   WESTPORT                     CT     06880  SFD          6.375     6.108  $2,932.19      360   1-Apr-29   $470,000.00
4970938   YORBA LINDA                  CA     92886  SFD          6.750     6.250  $1,816.08      360   1-Apr-29   $280,000.00
4971584   POTOMAC                      MD     20854  SFD          6.375     6.108  $3,376.70      360   1-Feb-29   $540,244.72
4971634   WEST CHESTER                 PA     19382  SFD          6.375     6.108  $2,031.95      360   1-Mar-29   $325,398.33
4971866   BOULDER                      CO     80304  SFD          6.375     6.108  $3,119.35      360   1-Apr-29   $500,000.00
4972036   KEY BISCAYNE                 FL     33149  SFD          7.125     6.250  $2,304.12      360   1-Mar-29   $341,726.51
4972079   NORCROSS                     GA     30092  SFD          7.125     6.250  $1,748.30      360   1-Apr-29   $259,500.00
4972126   SAN DIEGO                    CA     92129  SFD          6.750     6.250  $1,653.93      360   1-Apr-29   $255,000.00
4972138   HINSDALE                     IL     60521  SFD          6.875     6.250  $2,791.95      360   1-Mar-29   $424,642.95
4972679   DULUTH                       GA     30097  SFD          6.625     6.250  $2,561.25      360   1-Apr-29   $400,000.00
4972714   SAN JOSE                     CA     95138  SFD          6.250     5.983  $2,413.62      360   1-Mar-29   $391,628.05
4972841   CORONA                       CA     91720  SFD          6.500     6.233  $1,603.25      360   1-Mar-29   $253,420.69
4972859   MARIETTA                     GA     30066  SFD          7.125     6.250  $1,881.03      360   1-Feb-29   $278,752.11
4972940   SALEM                        NH     03079  SFD          6.875     6.250  $1,707.36      360   1-Apr-29   $259,900.00
4973340   JACKSONVILLE                 FL     32256  SFD          6.750     6.250  $1,803.11      360   1-Apr-29   $278,000.00
4973365   REDMOND                      WA     98052  SFD          7.375     6.250  $2,405.63      360   1-Apr-29   $348,300.00
4973515   THOUSAND OAKS                CA     91362  SFD          6.375     6.108  $1,831.69      360   1-Mar-29   $293,328.06
4973540   THE WOODLANDS                TX     77381  SFD          6.500     6.233  $1,905.69      360   1-Mar-29   $301,227.44
4973565   BELLEVUE                     WA     98006  SFD          6.500     6.233  $3,822.75      360   1-Apr-29   $604,800.00
4973840   UNIVERSITY PARK              TX     75205  SFD          6.875     6.250  $2,276.26      360   1-Apr-29   $346,500.00
4973931   THOUSAND OAKS                CA     91362  SFD          6.375     6.108  $2,002.63      360   1-Mar-29   $320,702.68
4973979   BELLAIRE                     TX     77401  SFD          6.375     6.108  $2,495.48      360   1-Mar-29   $399,629.52
4974080   GUILFORD                     CT     06437  SFD          6.875     6.250  $2,416.52      360   1-Apr-29   $367,850.00
4974170   WRENTHAM                     MA     02093  SFD          6.375     6.108  $1,927.76      360   1-Mar-29   $308,713.80
4974278   NEWPORT BEACH                CA     92660  SFD          6.375     6.108  $3,796.88      360   1-Mar-29   $608,036.31
4974322   LEXINGTON                    SC     29072  SFD          6.750     6.250  $1,706.79      360   1-Mar-29   $262,923.43
4974379   WHITEHOUSE STATION           NJ     08889  SFD          7.125     6.250  $1,684.30      360   1-Apr-29   $250,000.00
4974443   THE WOODLANDS                TX     77382  SFD          6.750     6.250  $2,827.89      360   1-Apr-29   $436,000.00
4974605   HUNTINGTON BEACH             CA     92648  SFD          6.375     6.108  $2,445.58      360   1-Mar-29   $391,636.92
4974671   MALVERN                      PA     19355  SFD          6.375     6.108  $2,651.45      360   1-Mar-29   $424,606.36
4975018   TAMPA                        FL     33626  SFD          6.750     6.250  $1,844.62      360   1-Apr-29   $284,400.00
4975147   LAGUNA NIGUEL                CA     92677  SFD          6.625     6.250  $1,984.97      360   1-Mar-29   $309,726.49
4975434   SAN RAMON                    CA     94583  SFD          6.500     6.233  $1,926.55      360   1-Mar-29   $304,524.45
4975454   ENGLEWOOD                    CO     80111  SFD          6.750     6.250  $2,010.66      360   1-Mar-29   $309,733.09
4975817   AUSTIN                       TX     78746  SFD          6.625     6.250  $2,663.70      360   1-Mar-29   $415,632.97
4976158   THE WOODLANDS                TX     77381  SFD          6.625     6.250  $1,920.94      360   1-Apr-29   $300,000.00
4976356   PLANO                        TX     75093  SFD          6.250     5.983  $3,303.64      360   1-Mar-29   $536,040.89
4976402   POWELL                       OH     43065  SFD          6.250     5.983  $2,387.76      360   1-Mar-29   $387,432.03
4976824   WILDWOOD                     MO     63038  SFD          7.125     6.250  $1,751.67      360   1-Apr-29   $260,000.00
4976890   ALISO VIEJO                  CA     92656  SFD          6.625     6.250  $1,727.56      360   1-Apr-29   $269,800.00
4976912   HARTLAND                     WI     53029  SFD          6.875     6.250  $1,806.56      360   1-Apr-29   $275,000.00
4976954   MEDIA                        PA     19063  SFD          6.875     6.250  $1,951.08      360   1-Mar-29   $296,750.48
4977016   RIDGEFIELD                   CT     06877  SFD          6.625     6.250  $1,728.84      360   1-Apr-29   $270,000.00
4977047   COLUMBIA                     MD     21044  SFD          6.625     6.250  $1,864.59      360   1-Apr-29   $291,200.00
4977207   GREAT FALLS                  VA     22066  SFD          6.375     6.108  $2,120.54      360   1-Apr-29   $339,900.00
4977293   AUSTIN                       TX     78733  SFD          6.875     6.250  $1,865.68      360   1-Mar-29   $283,761.40
4977569   STONY POINT                  NY     10980  SFD          6.500     6.233  $2,679.97      360   1-Apr-29   $424,000.00
4977576   NEWARK                       DE     19711  SFD          7.375     6.250  $2,112.78      360   1-Apr-29   $305,900.00
4977585   AUSTIN                       TX     78708  SFD          7.000     6.250  $2,314.93      360   1-Apr-29   $347,950.00
4977599   MARIETTA                     GA     30062  SFD          7.000     6.250  $2,042.82      360   1-Apr-29   $307,050.00
4977723   PHOENIX                      AZ     85022  SFD          6.250     5.983  $1,624.27      360   1-Apr-29   $263,800.00
4977790   THE WOODLANDS                TX     77380  PUD          6.500     6.233  $2,149.04      360   1-Mar-29   $339,692.63
4978020   MISSION VIEJO                CA     92692  SFD          6.625     6.250  $2,822.50      360   1-Mar-29   $440,411.08
4978136   SMYRNA                       GA     30080  SFD          7.625     6.250  $2,814.90      360   1-Apr-29   $397,700.00
4978328   LOVELAND                     OH     45140  SFD          7.000     6.250  $1,813.95      360   1-Apr-29   $272,650.00
4978765   CHESTER SPRINGS              PA     19425  SFD          6.375     6.108  $1,653.26      360   1-Apr-29   $265,000.00
4979021   LAS FLORES                   CA     92688  SFD          6.625     6.250  $1,960.00      360   1-Apr-29   $306,100.00
4979736   CLAYTON                      CA     94517  SFD          7.125     6.250  $2,386.65      360   1-Apr-29   $354,250.00
4980016   CLIFTON                      VA     20124  SFD          6.500     6.233  $1,896.21      360   1-Apr-29   $300,000.00
4980136   WINDERMERE                   FL     34786  SFD          6.875     6.250  $1,802.62      360   1-Apr-29   $274,400.00
4980430   AUSTIN                       TX     78731  SFD          7.125     6.250  $1,879.68      360   1-Apr-29   $279,000.00
4980778   VENTURA                      CA     93001  SFD          6.625     6.250  $1,579.97      360   1-Mar-29   $246,532.30
4981489   SAN DIEGO                    CA     92131  SFD          6.500     6.233  $2,199.60      360   1-Apr-29   $348,000.00
4981644   HUMBLE                       TX     77339  SFD          6.125     5.858  $1,731.70      360   1-Apr-29   $285,000.00
4981648   LITTLETON                    CO     80126  SFD          7.250     6.250  $1,719.09      360   1-Apr-29   $252,000.00
4982206   HOUSTON                      TX     77077  SFD          6.625     6.250  $1,972.16      360   1-Apr-29   $308,000.00
4982405   CHICAGO                      IL     60622  MF2          6.875     6.250  $2,036.48      360   1-Apr-29   $310,000.00
4983186   ANNANDALE                    NJ     08801  SFD          6.500     6.233  $2,174.64      360   1-Apr-29   $344,050.00
4983355   MAPLE GROVE                  MN     55311  SFD          6.625     6.250  $1,818.81      360   1-Apr-29   $284,050.00
4984839   ATLANTA                      GA     30306  SFD          6.750     6.250  $2,773.41      360   1-Apr-29   $427,600.00
4985474   BOULDER                      CO     80304  SFD          6.625     6.250  $3,841.87      360   1-Apr-29   $600,000.00
4985840   ANNANDALE                    NJ     08801  SFD          6.500     6.233  $1,592.18      360   1-Apr-29   $251,900.00
4986385   MIDLOTHIAN                   VA     23113  SFD          7.250     6.250  $1,781.85      360   1-Apr-29   $261,200.00
4986561   REDMOND                      WA     98053  SFD          6.000     5.733  $1,625.99      360   1-Apr-29   $271,200.00
4986615   MCKINNEY                     TX     75070  SFD          6.500     6.233  $1,776.12      360   1-Apr-29   $281,000.00
4987725   SUNNYVALE                    CA     94087  SFD          6.750     6.250  $2,864.86      360   1-Apr-29   $441,700.00
4988252   TAMPA                        FL     33609  SFD          6.500     6.233  $2,844.31      360   1-Apr-29   $450,000.00
4988730   MADISON                      MS     39110  SFD          6.875     6.250  $1,734.30      360   1-Apr-29   $264,000.00
4826008   WHEATON                      IL     60187  SFD          6.625     6.250  $2,151.45      360   1-Aug-28   $333,582.06
4834251   SAN LUIS OBISPO              CA     93401  SFD          6.750     6.250  $1,933.48      360   1-Sep-28   $296,272.73
4848822   HUNTINGTON BEACH             CA     92646  SFD          6.500     6.233  $2,047.91      360   1-Oct-28   $322,218.56
4875737   YORBA LINDA                  CA     92886  SFD          6.375     6.108  $2,152.36      360   1-Nov-28   $343,385.19
4891019   SARATOGA SPRINGS             NY     12866  SFD          6.250     5.983  $2,222.13      360   1-Dec-28   $359,519.49
4891051   NAPERVILLE                   IL     60564  SFD          6.250     5.983  $1,884.10      360   1-Dec-28   $304,829.50
4891070   DENVER                       NC     28037  SFD          6.625     6.250  $1,873.23      360   1-Dec-28   $291,508.97
4904564   SUWANEE                      GA     30024  SFD          6.125     5.858  $1,444.60      360   1-Nov-28   $236,582.73


<CAPTION>
(i)       (x)     (xi)       (xii)       (xiii)   (xiv)        (xv)     (xvi)   
- --------  ------  ---------  ----------  -------  -----------  -------  --------
                                                                                
MORTGAGE                     MORTGAGE             T.O.P.       MASTER   FIXED   
LOAN                         INSURANCE   SERVICE  MORTGAGE     SERVICE  RETAINED
NUMBER    LTV     SUBSIDY    CODE        FEE      LOAN         FEE      YIELD   
- --------  ------  ---------  ----------  -------  -----------  -------  --------
<S>       <C>     <C>        <C>         <C>      <C>          <C>      <C>     
4675406   80.00                            0.25                  0.017    0.108 
4723027   68.79   FX 5YR                   0.25                  0.017    0.000 
4734434   85.00                    11      0.25                  0.017    0.000 
4740444   83.17                            0.25                  0.017    0.108 
4760324   80.00                            0.25                  0.017    0.233 
4765883   66.36   GD 3YR                   0.25                  0.017    0.108 
4766089   79.97                            0.25                  0.017    0.000 
4768610   78.88                            0.25                  0.017    0.000 
4772218   89.98                    33      0.25                  0.017    0.233 
4782758   80.00                            0.25                  0.017    0.108 
4783423   89.19                            0.25                  0.017    0.358 
4783563   65.93   GD 3YR                   0.25                  0.017    0.000 
4783746   93.11                            0.25                  0.017    0.108 
4785080   58.54                            0.25                  0.017    0.000 
4787001   60.25                            0.25                  0.017    0.000 
4787591   43.29                            0.25                  0.017    0.108 
4788385   79.87                            0.25                  0.017    0.233 
4790208   80.00                            0.25                  0.017    0.108 
4792111   79.56                            0.25                  0.017    0.000 
4792570   95.74                            0.25                  0.017    0.733 
4793226   95.27   GD 5YR           17      0.25                  0.017    0.108 
4794791   80.00   GD 5YR                   0.25                  0.017    0.483 
4800782   80.00                            0.25                  0.017    0.608 
4801205   79.99                            0.25                  0.017    0.000 
4801848   78.40                            0.25                  0.017    0.000 
4803591   80.00                            0.25                  0.017    0.108 
4809723   79.99                            0.25                  0.017    0.000 
4812771   80.00                            0.25                  0.017    0.000 
4820700   79.29                            0.25                  0.017    0.233 
4826635   79.99                            0.25                  0.017    0.358 
4827830   75.60                            0.25                  0.017    0.108 
4829004   75.01                            0.25                  0.017    0.233 
4831001   90.00                            0.25                  0.017    0.358 
4831766   80.00                            0.25                  0.017    0.233 
4831855   74.13                            0.25                  0.017    0.000 
4832443   94.99                            0.25                  0.017    0.233 
4832872   80.00                            0.25                  0.017    0.000 
4833272   80.00   GD 8YR                   0.25                  0.017    0.108 
4834310   79.12                            0.25                  0.017    0.000 
4834328   85.00                            0.25                  0.017    0.483 
4835224   67.69   GD 3YR                   0.25                  0.017    0.000 
4835660   50.33                            0.25                  0.017    0.000 
4840025   80.00   GD 8YR                   0.25                  0.017    0.483 
4841765   79.99                            0.25                  0.017    0.233 
4845448   57.39                            0.25                  0.017    0.108 
4845484   89.89                    11      0.25                  0.017    0.358 
4847564   70.11                            0.25                  0.017    0.000 
4847758   80.00                            0.25                  0.017    0.000 
4852388   71.72                            0.25                  0.017    0.108 
4853655   88.86   GD 4YR                   0.25                  0.017    0.108 
4853876   94.99                            0.25                  0.017    0.608 
4854376   77.40                            0.25                  0.017    0.000 
4855032   80.00                            0.25                  0.017    0.108 
4857937   80.00                            0.25                  0.017    0.483 
4858112   90.00                    17      0.25                  0.017    0.000 
4858905   80.00                            0.25                  0.017    0.000 
4860066   80.00                            0.25                  0.017    0.108 
4860249   62.88   GD 3YR                   0.25                  0.017    0.108 
4861596   80.00                            0.25                  0.017    0.108 
4862281   95.42                    06      0.25                  0.017    0.000 
4863024   78.67                            0.25                  0.017    0.233 
4864089   80.60                            0.25                  0.017    0.108 
4864155   85.00                            0.25                  0.017    0.000 
4865260   94.99                            0.25                  0.017    0.358 
4867492   95.63                    06      0.25                  0.017    0.000 
4868966   75.00                            0.25                  0.017    0.000 
4869964   67.89   GD 1YR                   0.25                  0.017    0.000 
4870423   80.00                            0.25                  0.017    0.108 
4871776   80.00                            0.25                  0.017    0.000 
4874465   85.00   GD 4YR                   0.25                  0.017    0.233 
4876427   80.00                            0.25                  0.017    0.000 
4876608   79.99                            0.25                  0.017    0.000 
4878341   84.91                    12      0.25                  0.017    0.000 
4879089   92.81                    17      0.25                  0.017    0.108 
4879358   79.99                            0.25                  0.017    0.108 
4879803   89.45                            0.25                  0.017    0.358 
4886731   90.00   GD 4YR                   0.25                  0.017    0.233 
4886888   80.00                            0.25                  0.017    0.000 
4887169   79.90                            0.25                  0.017    0.000 
4887382   80.00                            0.25                  0.017    0.108 
4890143   88.51                    11      0.25                  0.017    0.233 
4890429   86.45                            0.25                  0.017    0.000 
4892244   90.00   GD 4YR                   0.25                  0.017    0.608 
4892963   79.99   GD 3YR                   0.25                  0.017    0.000 
4894765   76.00                            0.25                  0.017    0.108 
4896358   90.00                            0.25                  0.017    0.733 
4896784   80.00                            0.25                  0.017    0.108 
4896810   61.84                            0.25                  0.017    0.000 
4897463   80.00                            0.25                  0.017    0.233 
4897748   80.00                            0.25                  0.017    0.233 
4897806   74.25   GD 3YR                   0.25                  0.017    0.000 
4899462   79.92                            0.25                  0.017    0.000 
4899511   80.00   GD 5YR                   0.25                  0.017    0.000 
4899815   80.00                            0.25                  0.017    0.233 
4900126   80.00                            0.25                  0.017    0.108 
4901165   80.00                            0.25                  0.017    0.108 
4901193   80.00                            0.25                  0.017    0.108 
4901959   80.00                            0.25                  0.017    0.108 
4902137   79.98   GD 4YR                   0.25                  0.017    0.733 
4902327   80.00                            0.25                  0.017    0.000 
4902354   90.00                    17      0.25                  0.017    0.358 
4902498   80.00                            0.25                  0.017    0.108 
4902533   90.00                            0.25                  0.017    0.733 
4903310   80.00                            0.25                  0.017    0.000 
4903695   79.99   GD 5YR                   0.25                  0.017    0.108 
4904578   82.86                            0.25                  0.017    0.358 
4904708   87.28                    11      0.25                  0.017    0.108 
4905654   71.82                            0.25                  0.017    0.108 
4907604   79.99   GD 5YR                   0.25                  0.017    0.000 
4908360   59.37   GD 3YR                   0.25                  0.017    0.108 
4908383   69.48                            0.25                  0.017    0.358 
4909378   90.00                            0.25                  0.017    0.358 
4909428   84.98                    33      0.25                  0.017    0.233 
4909526   90.00                            0.25                  0.017    0.483 
4909791   95.00                    33      0.25                  0.017    0.608 
4910583   80.00                            0.25                  0.017    0.233 
4910628   90.00                            0.25                  0.017    0.358 
4910765   84.66   GD 3YR                   0.25                  0.017    0.358 
4910937   68.32                            0.25                  0.017    0.108 
4911366   80.00                            0.25                  0.017    0.000 
4911955   80.00                            0.25                  0.017    0.358 
4914584   73.01                            0.25                  0.017    0.108 
4915005   80.00                            0.25                  0.017    0.483 
4915029   80.00                            0.25                  0.017    0.000 
4915478   49.86                            0.25                  0.017    0.108 
4915532   89.99                            0.25                  0.017    0.483 
4915992   69.62                            0.25                  0.017    0.108 
4916526   87.49                    06      0.25                  0.017    0.358 
4916603   95.45                    06      0.25                  0.017    0.483 
4916628   70.00                            0.25                  0.017    0.000 
4917401   95.00   GD 5YR           17      0.25                  0.017    0.608 
4917605   79.99                            0.25                  0.017    0.108 
4917731   80.00                            0.25                  0.017    0.108 
4917987   75.00                            0.25                  0.017    0.000 
4918082   95.00                            0.25                  0.017    0.483 
4918122   80.00                            0.25                  0.017    0.000 
4918945   69.23                            0.25                  0.017    0.000 
4919451   83.77   GD 3YR           17      0.25                  0.017    0.108 
4919662   69.99                            0.25                  0.017    0.233 
4919707   80.00                            0.25                  0.017    0.233 
4921866   76.12                            0.25                  0.017    0.108 
4922017   95.00                            0.25                  0.017    0.608 
4922152   80.00                            0.25                  0.017    0.000 
4922216   95.00                            0.25                  0.017    1.108 
4922321   74.07                            0.25                  0.017    0.108 
4922413   80.00                            0.25                  0.017    0.108 
4922527   79.38                            0.25                  0.017    0.000 
4922648   65.06                            0.25                  0.017    0.000 
4922704   51.66                            0.25                  0.017    0.233 
4922973   69.99                            0.25                  0.017    0.000 
4923463   62.37                            0.25                  0.017    0.108 
4923626   90.00                    12      0.25                  0.017    0.608 
4924056   85.00                            0.25                  0.017    0.358 
4924592   74.55                            0.25                  0.017    0.483 
4924946   80.00                            0.25                  0.017    0.000 
4925419   85.09                            0.25                  0.017    0.358 
4925908   90.00   GD 3YR                   0.25                  0.017    0.608 
4926436   80.00                            0.25                  0.017    0.108 
4926439   80.00                            0.25                  0.017    0.608 
4926573   90.00                            0.25                  0.017    0.483 
4927090   80.00                            0.25                  0.017    0.000 
4927240   80.00                            0.25                  0.017    0.108 
4927286   89.99                            0.25                  0.017    0.000 
4927530   79.35                            0.25                  0.017    0.483 
4927608   80.00                            0.25                  0.017    0.108 
4927734   80.00   GD 3YR                   0.25                  0.017    0.108 
4928212   84.99                    33      0.25                  0.017    0.000 
4928312   80.00                            0.25                  0.017    0.108 
4928941   94.34                            0.25                  0.017    0.483 
4929009   69.51                            0.25                  0.017    0.858 
4929178   95.00                            0.25                  0.017    0.108 
4929397   90.00                    17      0.25                  0.017    0.000 
4929532   84.07   GD 3YR                   0.25                  0.017    0.733 
4929711   90.00                    12      0.25                  0.017    0.108 
4929885   77.05                            0.25                  0.017    0.000 
4929890   95.00                            0.25                  0.017    0.483 
4930074   80.00                            0.25                  0.017    0.108 
4930227   79.99                            0.25                  0.017    0.000 
4930353   85.00                    06      0.25                  0.017    0.000 
4931183   95.00                            0.25                  0.017    0.233 
4931228   85.00   GD 2YR           11      0.25                  0.017    0.108 
4931398   79.99                            0.25                  0.017    0.000 
4931772   94.74                            0.25                  0.017    0.608 
4931800   52.91                            0.25                  0.017    0.000 
4931968   80.00                            0.25                  0.017    0.108 
4932643   79.97                            0.25                  0.017    0.108 
4932766   90.00                    33      0.25                  0.017    0.000 
4933460   80.00   GD 3YR                   0.25                  0.017    0.000 
4933797   90.00                            0.25                  0.017    0.733 
4933924   63.41   GD 5YR                   0.25                  0.017    0.358 
4934509   79.39                            0.25                  0.017    0.108 
4934577   80.00                            0.25                  0.017    0.108 
4934641   84.96                    33      0.25                  0.017    0.108 
4934661   75.32                            0.25                  0.017    0.483 
4934807   94.99                            0.25                  0.017    0.858 
4934879   69.99                            0.25                  0.017    0.000 
4934951   95.00   GD 5YR           11      0.25                  0.017    0.608 
4935430   79.99                            0.25                  0.017    0.000 
4935468   90.00                            0.25                  0.017    0.000 
4935508   80.00                            0.25                  0.017    0.483 
4935713   70.00                            0.25                  0.017    0.233 
4936379   55.63                            0.25                  0.017    0.108 
4936517   65.93                            0.25                  0.017    0.000 
4936856   80.00   GD 3YR                   0.25                  0.017    0.000 
4937030   80.00                            0.25                  0.017    0.000 
4937786   80.00   GD10YR                   0.25                  0.017    0.358 
4937891   67.03                            0.25                  0.017    0.000 
4937979   79.94                            0.25                  0.017    0.108 
4938769   79.99                            0.25                  0.017    0.233 
4938961   89.99                    06      0.25                  0.017    0.000 
4939000   94.99                    33      0.25                  0.017    0.000 
4939455   79.56   GD 3YR                   0.25                  0.017    0.000 
4939471   79.96                            0.25                  0.017    0.108 
4939485   59.41                            0.25                  0.017    0.000 
4940139   80.00                            0.25                  0.017    0.000 
4940301   55.56                            0.25                  0.017    0.000 
4940390   80.00                            0.25                  0.017    0.108 
4940637   80.00                            0.25                  0.017    0.000 
4940638   69.57                            0.25                  0.017    0.000 
4940677   57.14                            0.25                  0.017    0.108 
4940782   85.00                            0.25                  0.017    0.358 
4940837   80.00                            0.25                  0.017    0.233 
4940891   61.58                            0.25                  0.017    0.000 
4940969   80.00                            0.25                  0.017    0.108 
4941181   70.00   GD 3YR                   0.25                  0.017    0.000 
4941271   80.00                            0.25                  0.017    0.108 
4941296   67.83                            0.25                  0.017    0.000 
4941368   80.00                            0.25                  0.017    0.000 
4941758   75.47                            0.25                  0.017    0.108 
4942212   80.00                            0.25                  0.017    0.358 
4942386   79.05                            0.25                  0.017    0.000 
4942442   77.22                            0.25                  0.017    0.000 
4942464   51.65                            0.25                  0.017    0.108 
4942630   62.62                            0.25                  0.017    0.108 
4943101   95.00                            0.25                  0.017    0.983 
4943117   77.59                            0.25                  0.017    0.000 
4943612   90.00                            0.25                  0.017    0.858 
4943808   76.92                            0.25                  0.017    0.233 
4944043   80.00                            0.25                  0.017    0.358 
4944202   80.00                            0.25                  0.017    0.000 
4944253   80.00                            0.25                  0.017    0.000 
4944458   79.75                            0.25                  0.017    0.000 
4944523   79.99                            0.25                  0.017    0.358 
4944640   80.00                            0.25                  0.017    0.358 
4944723   79.93                            0.25                  0.017    0.000 
4944754   80.00                            0.25                  0.017    0.108 
4944820   90.00                            0.25                  0.017    0.733 
4944835   79.99                            0.25                  0.017    0.000 
4944851   63.38   GD 3YR                   0.25                  0.017    0.000 
4944974   90.00                    12      0.25                  0.017    0.108 
4945199   90.00                            0.25                  0.017    0.608 
4945260   90.00   GD 4YR                   0.25                  0.017    0.733 
4945486   80.00                            0.25                  0.017    0.000 
4945519   80.00                            0.25                  0.017    0.233 
4946098   95.00                            0.25                  0.017    0.483 
4946170   63.76                            0.25                  0.017    0.000 
4946186   80.00                            0.25                  0.017    0.108 
4946228   79.99                            0.25                  0.017    0.483 
4946229   59.62                            0.25                  0.017    0.108 
4946705   75.00                            0.25                  0.017    0.000 
4946722   66.67                            0.25                  0.017    0.000 
4946746   88.89                            0.25                  0.017    0.108 
4946905   90.00                    11      0.25                  0.017    0.000 
4946989   90.00   GD 5YR                   0.25                  0.017    0.608 
4947318   88.51                    11      0.25                  0.017    0.000 
4947343   77.04                            0.25                  0.017    0.000 
4947501   80.00                            0.25                  0.017    0.358 
4947741   80.00                            0.25                  0.017    0.000 
4948054   79.78                            0.25                  0.017    0.000 
4948083   79.41                            0.25                  0.017    0.483 
4948270   80.00                            0.25                  0.017    0.000 
4948362   55.10                            0.25                  0.017    0.858 
4948430   88.76                            0.25                  0.017    0.358 
4948462   78.35                            0.25                  0.017    0.000 
4948487   72.53                            0.25                  0.017    0.358 
4948783   69.74                            0.25                  0.017    0.000 
4948844   95.00                    12      0.25                  0.017    0.733 
4948874   52.36                            0.25                  0.017    0.000 
4949065   66.67                            0.25                  0.017    0.000 
4949103   79.88   GD 3YR                   0.25                  0.017    0.000 
4949301   90.00                            0.25                  0.017    0.608 
4949395   70.42                            0.25                  0.017    0.000 
4949468   89.96                            0.25                  0.017    0.733 
4949517   78.85                            0.25                  0.017    0.000 
4949528   80.00                            0.25                  0.017    0.483 
4949591   49.42                            0.25                  0.017    0.233 
4949606   68.83                            0.25                  0.017    0.108 
4949768   76.19                            0.25                  0.017    0.000 
4949819   76.09                            0.25                  0.017    0.483 
4949885   51.60                            0.25                  0.017    0.358 
4950003   54.17                            0.25                  0.017    0.108 
4950005   80.00                            0.25                  0.017    0.483 
4950114   70.00                            0.25                  0.017    0.108 
4950431   70.00   GD 3YR                   0.25                  0.017    0.108 
4950619   63.64                            0.25                  0.017    0.608 
4950652   39.55                            0.25                  0.017    0.000 
4950764   89.97                    13      0.25                  0.017    0.108 
4950779   80.00                            0.25                  0.017    0.000 
4950825   58.20                            0.25                  0.017    0.000 
4950854   78.87   GD 5YR                   0.25                  0.017    0.358 
4950877   80.00                            0.25                  0.017    0.000 
4951093   89.99                            0.25                  0.017    0.108 
4951275   52.00   GD 6YR                   0.25                  0.017    0.000 
4951399   90.00   GD 5YR                   0.25                  0.017    0.233 
4951513   64.71                            0.25                  0.017    0.000 
4951606   80.00                            0.25                  0.017    0.108 
4951702   80.00                            0.25                  0.017    0.000 
4951713   90.00                            0.25                  0.017    0.983 
4951788   62.00                            0.25                  0.017    0.000 
4952095   79.99                            0.25                  0.017    0.000 
4952114   80.00                            0.25                  0.017    0.608 
4952481   85.00   GD 4YR           12      0.25                  0.017    0.000 
4952492   80.00   GD 3YR                   0.25                  0.017    0.000 
4952519   80.00                            0.25                  0.017    0.483 
4952555   89.58                    11      0.25                  0.017    0.000 
4952670   61.22                            0.25                  0.017    0.000 
4952726   80.00                            0.25                  0.017    0.000 
4952746   80.00                            0.25                  0.017    0.000 
4952779   79.99                            0.25                  0.017    0.000 
4952781   80.00                            0.25                  0.017    0.358 
4952815   59.35                            0.25                  0.017    0.000 
4952987   75.00   GD 3YR                   0.25                  0.017    0.000 
4953163   80.00                            0.25                  0.017    0.108 
4953198   77.20                            0.25                  0.017    0.233 
4953288   80.00                            0.25                  0.017    0.000 
4953307   80.00                            0.25                  0.017    0.000 
4953354   79.99   GD 3YR                   0.25                  0.017    0.000 
4953385   80.00   GD 3YR                   0.25                  0.017    0.000 
4953762   89.35                            0.25                  0.017    0.233 
4953769   80.00                            0.25                  0.017    0.358 
4953861   80.00                            0.25                  0.017    0.108 
4954349   80.00                            0.25                  0.017    0.000 
4954619   90.00                    33      0.25                  0.017    0.000 
4954625   67.72                            0.25                  0.017    0.000 
4954631   95.00   GD 6YR                   0.25                  0.017    0.608 
4954690   80.00                            0.25                  0.017    0.000 
4954760   80.00                            0.25                  0.017    0.233 
4954828   90.00                            0.25                  0.017    0.858 
4954883   90.00                    11      0.25                  0.017    0.000 
4955042   39.11                            0.25                  0.017    0.233 
4955057   89.99                            0.25                  0.017    0.000 
4955276   70.13                            0.25                  0.017    0.733 
4955326   90.00                            0.25                  0.017    0.608 
4955367   80.00                            0.25                  0.017    0.233 
4955511   77.44   GD 4YR                   0.25                  0.017    0.000 
4955558   80.00   GD 3YR                   0.25                  0.017    0.000 
4955573   68.59                            0.25                  0.017    0.233 
4955834   88.13                            0.25                  0.017    1.233 
4956113   80.00                            0.25                  0.017    0.108 
4956156   90.00                            0.25                  0.017    0.483 
4956236   63.70                            0.25                  0.017    0.000 
4956444   68.77                            0.25                  0.017    0.000 
4956545   80.00                            0.25                  0.017    0.000 
4956572   79.17                            0.25                  0.017    0.108 
4956930   90.00                            0.25                  0.017    0.733 
4957068   80.00                            0.25                  0.017    0.233 
4957176   80.00                            0.25                  0.017    0.000 
4957260   89.92                            0.25                  0.017    0.733 
4957673   65.00   GD 4YR                   0.25                  0.017    0.858 
4957948   95.00                            0.25                  0.017    0.608 
4958151   87.65   GD 3YR                   0.25                  0.017    0.483 
4958158   70.00                            0.25                  0.017    0.000 
4958167   74.18   GD 3YR                   0.25                  0.017    0.000 
4958212   80.00                            0.25                  0.017    0.108 
4958319   73.47                            0.25                  0.017    0.858 
4958545   84.20   GD 4YR                   0.25                  0.017    0.108 
4958713   90.00                            0.25                  0.017    0.233 
4958787   94.99                    33      0.25                  0.017    0.108 
4959283   80.00                            0.25                  0.017    0.000 
4959316   64.31                            0.25                  0.017    0.000 
4959356   80.00                            0.25                  0.017    0.000 
4959495   84.21                            0.25                  0.017    1.108 
4959595   95.00                    11      0.25                  0.017    0.000 
4959834   95.00                            0.25                  0.017    0.733 
4960040   75.22                            0.25                  0.017    0.233 
4960477   80.00                            0.25                  0.017    0.000 
4961026   59.90   GD 3YR                   0.25                  0.017    0.108 
4961149   77.30   GD 5YR                   0.25                  0.017    0.000 
4961340   79.45   GD 3YR                   0.25                  0.017    0.108 
4961715   95.00   GD 5YR                   0.25                  0.017    0.733 
4961802   80.00                            0.25                  0.017    0.000 
4961906   72.92                            0.25                  0.017    0.000 
4961931   48.07                            0.25                  0.017    0.000 
4962025   77.52                            0.25                  0.017    0.000 
4962109   80.00                            0.25                  0.017    0.000 
4962441   58.69                            0.25                  0.017    0.000 
4962461   64.07   GD 5YR                   0.25                  0.017    0.858 
4962603   80.00                            0.25                  0.017    0.000 
4962719   80.00                            0.25                  0.017    0.358 
4963266   80.00                            0.25                  0.017    0.233 
4963272   64.71                            0.25                  0.017    0.108 
4963353   59.67                            0.25                  0.017    0.000 
4963555   80.00                            0.25                  0.017    0.108 
4963704   80.00                            0.25                  0.017    0.000 
4963931   90.00                    06      0.25                  0.017    0.483 
4964217   53.40                            0.25                  0.017    0.000 
4964374   90.00                    06      0.25                  0.017    0.858 
4964406   90.00   GD 6YR           11      0.25                  0.017    0.483 
4964452   90.00                            0.25                  0.017    0.000 
4964626   80.00                            0.25                  0.017    0.000 
4964697   50.53                            0.25                  0.017    0.108 
4964754   80.00                            0.25                  0.017    0.000 
4964945   80.00                            0.25                  0.017    0.000 
4964961   90.00                    33      0.25                  0.017    0.733 
4964965   90.00                            0.25                  0.017    0.000 
4965015   79.99                            0.25                  0.017    0.233 
4965063   68.42   GD 3YR                   0.25                  0.017    0.000 
4965129   70.00                            0.25                  0.017    0.358 
4965295   82.73                    33      0.25                  0.017    0.358 
4965327   95.00                            0.25                  0.017    0.233 
4965657   72.22                            0.25                  0.017    0.108 
4965734   90.00                            0.25                  0.017    0.000 
4965829   84.88                            0.25                  0.017    0.000 
4965839   80.00                            0.25                  0.017    0.000 
4965866   80.00                            0.25                  0.017    0.000 
4966002   80.00   GD 3YR                   0.25                  0.017    0.000 
4966059   80.00                            0.25                  0.017    0.000 
4966184   80.00   GD 3YR                   0.25                  0.017    0.000 
4966194   80.00                            0.25                  0.017    0.000 
4966219   90.00                            0.25                  0.017    0.608 
4966242   85.00                    06      0.25                  0.017    0.233 
4966354   95.00                            0.25                  0.017    0.608 
4966679   80.00                            0.25                  0.017    0.358 
4966695   79.99                            0.25                  0.017    0.108 
4966824   95.00                    06      0.25                  0.017    0.358 
4966829   80.00                            0.25                  0.017    0.000 
4966892   70.00                            0.25                  0.017    0.000 
4966915   70.00                            0.25                  0.017    0.000 
4966948   84.22                    06      0.25                  0.017    0.000 
4966968   80.00                            0.25                  0.017    0.233 
4967088   74.98                            0.25                  0.017    0.233 
4967331   80.00                            0.25                  0.017    0.608 
4967405   74.65                            0.25                  0.017    0.108 
4967570   61.09                            0.25                  0.017    0.000 
4967610   80.00                            0.25                  0.017    0.000 
4967646   78.96                            0.25                  0.017    0.000 
4967748   80.00                            0.25                  0.017    0.358 
4967780   90.00                            0.25                  0.017    0.233 
4967958   80.00                            0.25                  0.017    0.233 
4968002   79.97                            0.25                  0.017    0.000 
4968016   90.00                            0.25                  0.017    0.108 
4968021   64.68                            0.25                  0.017    0.000 
4968130   80.00                            0.25                  0.017    0.000 
4968419   80.00                            0.25                  0.017    0.000 
4968440   80.00                            0.25                  0.017    0.233 
4968522   80.00                            0.25                  0.017    0.000 
4968592   89.92                            0.25                  0.017    0.358 
4968685   80.00                            0.25                  0.017    0.233 
4968689   49.18                            0.25                  0.017    0.000 
4968743   60.98                            0.25                  0.017    0.233 
4968760   80.00                            0.25                  0.017    0.233 
4968908   54.46                            0.25                  0.017    0.000 
4968937   80.00                            0.25                  0.017    0.233 
4968952   53.34                            0.25                  0.017    0.108 
4969044   80.00                            0.25                  0.017    0.000 
4969081   79.31                            0.25                  0.017    0.233 
4969342   90.00                    11      0.25                  0.017    0.358 
4969563   62.77                            0.25                  0.017    0.000 
4969625   90.00                            0.25                  0.017    0.358 
4969685   80.00   GD 3YR                   0.25                  0.017    0.000 
4969701   80.00                            0.25                  0.017    0.000 
4969964   94.99                            0.25                  0.017    0.733 
4970006   72.05                            0.25                  0.017    0.000 
4970135   80.00                            0.25                  0.017    0.000 
4970151   45.07                            0.25                  0.017    0.000 
4970191   80.00                            0.25                  0.017    0.000 
4970667   70.57   GD 4YR                   0.25                  0.017    0.000 
4970938   78.54                            0.25                  0.017    0.233 
4971584   79.99                            0.25                  0.017    0.000 
4971634   69.98                            0.25                  0.017    0.000 
4971866   68.49                            0.25                  0.017    0.000 
4972036   90.00                            0.25                  0.017    0.608 
4972079   75.00                            0.25                  0.017    0.608 
4972126   79.94                            0.25                  0.017    0.233 
4972138   68.77                            0.25                  0.017    0.358 
4972679   59.26                            0.25                  0.017    0.108 
4972714   80.00                            0.25                  0.017    0.000 
4972841   95.00                    11      0.25                  0.017    0.000 
4972859   90.00                    13      0.25                  0.017    0.608 
4972940   89.99                            0.25                  0.017    0.358 
4973340   71.65                            0.25                  0.017    0.233 
4973365   90.00                            0.25                  0.017    0.858 
4973515   80.00                            0.25                  0.017    0.000 
4973540   90.00                    33      0.25                  0.017    0.000 
4973565   76.58                            0.25                  0.017    0.000 
4973840   90.00                    11      0.25                  0.017    0.358 
4973931   75.00                            0.25                  0.017    0.000 
4973979   88.12                            0.25                  0.017    0.000 
4974080   88.45                            0.25                  0.017    0.358 
4974170   72.99                            0.25                  0.017    0.000 
4974278   85.00                            0.25                  0.017    0.000 
4974322   95.00   GD 3YR           12      0.25                  0.017    0.233 
4974379   79.37                            0.25                  0.017    0.608 
4974443   80.00                            0.25                  0.017    0.233 
4974605   79.67                            0.25                  0.017    0.000 
4974671   70.00                            0.25                  0.017    0.000 
4975018   79.85                            0.25                  0.017    0.233 
4975147   24.31                            0.25                  0.017    0.108 
4975434   80.00                            0.25                  0.017    0.000 
4975454   62.12                            0.25                  0.017    0.233 
4975817   80.00                            0.25                  0.017    0.108 
4976158   66.39                            0.25                  0.017    0.108 
4976356   79.99                            0.25                  0.017    0.000 
4976402   79.96                            0.25                  0.017    0.000 
4976824   80.00                            0.25                  0.017    0.608 
4976890   95.00                            0.25                  0.017    0.108 
4976912   77.46                            0.25                  0.017    0.358 
4976954   90.00                            0.25                  0.017    0.358 
4977016   68.44                            0.25                  0.017    0.108 
4977047   80.00                            0.25                  0.017    0.108 
4977207   80.00   GD 3YR                   0.25                  0.017    0.000 
4977293   80.00                            0.25                  0.017    0.358 
4977569   80.00   GD 2YR                   0.25                  0.017    0.000 
4977576   90.00                            0.25                  0.017    0.858 
4977585   80.00                            0.25                  0.017    0.483 
4977599   94.99                            0.25                  0.017    0.483 
4977723   72.51                            0.25                  0.017    0.000 
4977790   80.00                            0.25                  0.017    0.000 
4978020   80.00                            0.25                  0.017    0.108 
4978136   85.00                            0.25                  0.017    1.108 
4978328   79.99                            0.25                  0.017    0.483 
4978765   75.71                            0.25                  0.017    0.000 
4979021   89.99                            0.25                  0.017    0.108 
4979736   68.79                            0.25                  0.017    0.608 
4980016   50.85                            0.25                  0.017    0.000 
4980136   80.00                            0.25                  0.017    0.358 
4980430   90.00                            0.25                  0.017    0.608 
4980778   75.00                            0.25                  0.017    0.108 
4981489   80.00                            0.25                  0.017    0.000 
4981644   68.02                            0.25                  0.017    0.000 
4981648   80.00                            0.25                  0.017    0.733 
4982206   56.83                            0.25                  0.017    0.108 
4982405   79.08   GD 8YR                   0.25                  0.017    0.358 
4983186   79.99                            0.25                  0.017    0.000 
4983355   95.00                    06      0.25                  0.017    0.108 
4984839   80.00                            0.25                  0.017    0.233 
4985474   68.97                            0.25                  0.017    0.108 
4985840   90.00                            0.25                  0.017    0.000 
4986385   95.00                            0.25                  0.017    0.733 
4986561   80.00                            0.25                  0.017    0.000 
4986615   89.99                    33      0.25                  0.017    0.000 
4987725   70.00                            0.25                  0.017    0.233 
4988252   51.14                            0.25                  0.017    0.000 
4988730   80.00                            0.25                  0.017    0.358 
4826008   80.00                            0.25                  0.017    0.108 
4834251   89.99                            0.25                  0.017    0.233 
4848822   90.00                    17      0.25                  0.017    0.000 
4875737   79.31                            0.25                  0.017    0.000 
4891019   91.72                     6      0.25                  0.017    0.000 
4891051   75.37                            0.25                  0.017    0.000 
4891070   79.07                            0.25                  0.017    0.108 
4904564   89.98                    17      0.25                  0.017    0.000 
</TABLE>

COUNT:               552
WAC:         6.628227886
WAM:         358.6746588
WALTV:       78.13520376


<PAGE>



                                   EXHIBIT F-3

NASCOR
NMI / 1999-12  Exhibit F-3 (Part A)
30 YEAR FIXED RATE RELOCATION LOANS

<TABLE>
<CAPTION>
(i)       (ii)                                       (iii)     (iv)      (v)       (vi)       (vii)     (viii)     (ix)       
- --------  ---------------------------  -----  -----  --------  --------  --------  ---------  --------  ---------  -----------
                                                                         NET                                       CUT-OFF    
MORTGAGE                                                       MORTGAGE  MORTGAGE  CURRENT    ORIGINAL  SCHEDULED  DATE       
LOAN                                          ZIP    PROPERTY  INTEREST  INTEREST  MONTHLY    TERM TO   MATURITY   PRINCIPAL  
NUMBER    CITY                         STATE  CODE   TYPE      RATE      RATE      PAYMENT    MATURITY  DATE       BALANCE    
- --------  ---------------------------  -----  -----  --------  --------  --------  ---------  --------  ---------  -----------
<S>       <C>                          <C>    <C>    <C>       <C>       <C>       <C>        <C>       <C>        <C>        
4826008   WHEATON                      IL     60187  SFD          6.625     6.250  $2,151.45      360   1-Aug-28   $333,582.06
4834251   SAN LUIS OBISPO              CA     93401  SFD          6.750     6.250  $1,933.48      360   1-Sep-28   $296,272.73
4848822   HUNTINGTON BEACH             CA     92646  SFD          6.500     6.233  $2,047.91      360   1-Oct-28   $322,218.56
4875737   YORBA LINDA                  CA     92886  SFD          6.375     6.108  $2,152.36      360   1-Nov-28   $343,385.19
4891019   SARATOGA SPRINGS             NY     12866  SFD          6.250     5.983  $2,222.13      360   1-Dec-28   $359,519.49
4891051   NAPERVILLE                   IL     60564  SFD          6.250     5.983  $1,884.10      360   1-Dec-28   $304,829.50
4891070   DENVER                       NC     28037  SFD          6.625     6.250  $1,873.23      360   1-Dec-28   $291,508.97
4901298   MILLINGTON                   NJ     07946  SFD          7.250     6.250  $2,213.06      240   1-Jul-18   $275,192.45
4901314   TEMPE                        AZ     85284  SFD          6.875     6.250  $1,886.83      300   1-Oct-23   $267,930.84
4904564   SUWANEE                      GA     30024  SFD          6.125     5.858  $1,444.60      360   1-Nov-28   $236,582.73
4930165   VICTOR                       NY     14564  SFD          6.625     6.250  $1,628.96      360   1-Jan-29   $253,722.89
4931654   MASON                        OH     45040  SFD          6.500     6.233  $1,940.45      360   1-Jan-29   $306,162.88
4932581   SPRINGBORO                   OH     45066  SFD          6.625     6.250  $1,639.20      360   1-Oct-28   $254,625.95
4932628   PLANO                        TX     75093  SFD          7.000     6.250  $1,995.91      360   1-Aug-28   $287,734.62
4932700   DUNWOOD                      GA     30350  SFD          6.625     6.250  $1,508.58      360   1-Nov-28   $234,549.11
4934121   OKEMOS                       MI     48864  SFD          6.750     6.250  $1,589.07      360   1-Aug-28   $243,278.86
4936039   WESTON                       CT     06883  SFD          6.500     6.233  $3,236.19      360   1-Feb-29   $511,007.87
4936973   HUNTINGTON                   NY     11743  SFD          6.750     6.250  $3,015.99      360   1-Dec-28   $463,384.98
4941501   LEESBURG                     GA     31763  SFD          6.500     6.233  $1,766.64      360   1-Jan-29   $278,737.84
4949551   VERNON HILLS                 IL     60061  SFD          7.000     6.250  $1,767.53      360   1-Feb-29   $265,235.17
4954938   BELEWS CREEK                 NC     27320  SFD          6.500     6.233  $1,681.21      360   1-Feb-29   $265,212.81
4956818   SPRING                       TX     77379  SFD          6.625     6.250  $1,850.50      360   1-Nov-28   $287,609.84
4957223   CORNELIUS                    NC     28031  SFD          6.750     6.250  $1,751.21      360   1-Dec-28   $269,062.29
4957255   DUXBURY                      MA     02332  SFD          6.625     6.250  $3,611.35      360   1-Nov-28   $561,484.37
4957832   PLANT CITY                   FL     33565  SFD          6.750     6.250  $1,705.81      360   1-Nov-28   $261,633.76
4959258   ATLANTA                      GA     30312  SFD          6.750     6.250  $1,617.44      360   1-Nov-28   $248,289.32
4963027   STAMFORD                     CT     06905  SFD          7.000     6.250  $1,829.58      360   1-Dec-28   $274,090.43
4966146   CHARLOTTE                    NC     28270  SFD          6.375     6.108  $1,684.45      360   1-Feb-29   $269,498.53
4974884   PERRYSBURG                   OH     43551  SFD          6.625     6.250  $  713.95      360   1-Aug-28   $109,981.99
4974899   FAIRFIELD                    CA     94585  SFD          7.000     6.250  $1,545.17      360   1-Dec-28   $231,481.79
4974920   GAITHERSBURG                 MD     20878  SFD          6.250     5.983  $1,600.87      360   1-Dec-28   $259,005.45
4974921   AUSTIN                       TX     78732  SFD          6.500     6.233  $1,641.49      360   1-Nov-28   $258,513.31
4974935   PETALUMA                     CA     94954  SFD          6.750     6.250  $2,312.58      360   1-Dec-28   $354,612.56
4975002   CANTON                       OH     44708  SFD          6.375     6.108  $  908.36      360   1-Oct-28   $144,272.00
4975004   BEAVERCREEK                  OH     45434  SFD          6.250     5.983  $1,093.52      360   1-Oct-28   $176,575.62
4975015   KENNESAW                     GA     30144  SFD          6.250     5.983  $1,002.89      360   1-Oct-28   $161,940.51
4975026   ROANOKE                      VA     24018  SFD          6.500     6.233  $1,697.11      360   1-Dec-28   $267,434.37
4975035   SYLVANIA                     OH     43560  SFD          6.500     6.233  $  948.11      360   1-Sep-28   $149,035.17
4975168   LENOIR CITY                  TN     37772  SFD          6.875     6.250  $1,733.77      360   1-Dec-28   $263,025.43


<CAPTION>
(i)       (x)     (xi)       (xii)       (xiii)   (xiv)        (xv)     (xvi)   
- --------  ------  ---------  ----------  -------  -----------  -------  --------
                                                                                
MORTGAGE                     MORTGAGE             T.O.P.       MASTER   FIXED   
LOAN                         INSURANCE   SERVICE  MORTGAGE     SERVICE  RETAINED
NUMBER    LTV     SUBSIDY    CODE        FEE      LOAN         FEE      YIELD   
- --------  ------  ---------  ----------  -------  -----------  -------  --------
<S>       <C>     <C>        <C>         <C>      <C>          <C>      <C>     
4826008   80.00                             0.25                 0.017    0.108 
4834251   89.99                             0.25                 0.017    0.233 
4848822   90.00                    17       0.25                 0.017        0 
4875737   79.31                             0.25                 0.017        0 
4891019   91.72                    06       0.25                 0.017        0 
4891051   75.37                             0.25                 0.017        0 
4891070   79.07                             0.25                 0.017    0.108 
4901298   80.00                              0.5                 0.017    0.483 
4901314   90.00                              0.5                 0.017    0.108 
4904564   89.98                    17       0.25                 0.017        0 
4930165   80.00                             0.25                 0.017    0.108 
4931654   79.99                             0.25                 0.017        0 
4932581   80.00                             0.25                 0.017    0.108 
4932628   80.00                             0.25                 0.017    0.483 
4932700   95.00                    33       0.25                 0.017    0.108 
4934121   67.49                             0.25                 0.017    0.233 
4936039   80.00                             0.25                 0.017        0 
4936973   69.92                             0.25                 0.017    0.233 
4941501   80.00                             0.25                 0.017        0 
4949551   89.00                    12       0.25                 0.017    0.483 
4954938   79.85                             0.25                 0.017        0 
4956818   84.34                    12       0.25                 0.017    0.108 
4957223   90.00                    11       0.25                 0.017    0.233 
4957255   80.00                             0.25                 0.017    0.108 
4957832   76.23                             0.25                 0.017    0.233 
4959258   95.00                    12       0.25                 0.017    0.233 
4963027   77.46                             0.25                 0.017    0.483 
4966146   68.78                             0.25                 0.017        0 
4974884   63.90                             0.25                 0.017    0.108 
4974899   94.98                    13       0.25                 0.017    0.483 
4974920   80.00                             0.25                 0.017        0 
4974921   89.98                    11       0.25                 0.017    0.000 
4974935   80.00                             0.25                 0.017    0.233 
4975002   80.00                             0.25                 0.017    0.000 
4975004   80.00                             0.25                 0.017    0.000 
4975015   90.00                    33       0.25                 0.017    0.000 
4975026   80.89                     1       0.25                 0.017    0.000 
4975035   81.30                    33       0.25                 0.017    0.000 
4975168   80.00                             0.25                 0.017    0.358 
</TABLE>

COUNT:               39
WAC:        6.615238025
WAM:        350.7601336
WALTV:      81.91456336

<PAGE>


NASCOR
NMI / 1999-12 Exhibit F-3 (Part B)
30 YEAR FIXED RATE RELOCATION  LOANS


<TABLE>
<CAPTION>
(i)       (xvii)                                   (xviii)                                 
- --------  ---------------------------------------  --------------------------------------- 
                                                                                           
MORTGAGE                                           NMI                                     
LOAN                                               LOAN                                    
NUMBER    SERVICER                                 SELLER                                  
- --------  ---------------------------------------  --------------------------------------- 
<S>       <C>                                      <C>                                     
4826008   STAR BANK                                STAR BANK                               
4834251   STAR BANK                                STAR BANK                               
4848822   STAR BANK                                STAR BANK                               
4875737   STAR BANK                                STAR BANK                               
4891019   STAR BANK                                STAR BANK                               
4891051   STAR BANK                                STAR BANK                               
4891070   STAR BANK                                STAR BANK                               
4901298   BANK OF AMERICA, NT & SA                 BANK OF AMERICA, NT & SA                
4901314   BANK OF AMERICA, NT & SA                 BANK OF AMERICA, NT & SA                
4904564   STAR BANK                                STAR BANK                               
4930165   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4931654   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4932581   GMAC MORTGAGE CORP                       GMAC MORTGAGE CORP                      
4932628   GMAC MORTGAGE CORP                       GMAC MORTGAGE CORP                      
4932700   GMAC MORTGAGE CORP                       GMAC MORTGAGE CORP                      
4934121   GMAC MORTGAGE CORP                       GMAC MORTGAGE CORP                      
4936039   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4936973   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4941501   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4949551   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4954938   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4956818   FIRST UNION MORTGAGE CORP                FIRST UNION MORTGAGE CORP               
4957223   FIRST UNION MORTGAGE CORP                FIRST UNION MORTGAGE CORP               
4957255   FIRST UNION MORTGAGE CORP                FIRST UNION MORTGAGE CORP               
4957832   FIRST UNION MORTGAGE CORP                FIRST UNION MORTGAGE CORP               
4959258   FIRST UNION MORTGAGE CORP                FIRST UNION MORTGAGE CORP               
4963027   FIRST UNION MORTGAGE CORP                FIRST UNION MORTGAGE CORP               
4966146   HUNTINGTON MORTGAGE COMPANY              HUNTINGTON MORTGAGE COMPANY             
4974884   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4974899   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4974920   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4974921   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4974935   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4975002   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4975004   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4975015   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4975026   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4975035   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
4975168   NATIONAL CITY MORTGAGE C                 NATIONAL CITY MORTGAGE C                
</TABLE>


COUNT:                        39
WAC:                 6.615238025
WAM:                 350.7601336
WALTV:               81.91456336


<PAGE>



                                    EXHIBIT G

                               REQUEST FOR RELEASE
                       (for Trust Administrator/Custodian)

LOAN INFORMATION

      Name of Mortgagor:                  _____________________________

      Servicer
      Loan No.:                           _____________________________

CUSTODIAN/TRUST ADMINISTRATOR

      Name:                               _____________________________

      Address:                            _____________________________

      Custodian/Trustee                   _____________________________

      Mortgage File No.:                  _____________________________

SELLER

      Name:                               _____________________________

      Address:                            _____________________________

      Certificates:                                                     
                                          Mortgage Pass-Through Certificates,
                                          Series 1999-12

            The  undersigned  Master Servicer  hereby  acknowledges  that it has
received from First Union National Bank, as Trust  Administrator for the Holders
of Mortgage Pass-Through Certificates, Series 1999-12, 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 April 28,  1999 (the  "Pooling  and  Servicing
Agreement") among the Trust  Administrator,  the Seller, the Master Servicer and
the United States Trust Company of New York, as Trustee.



( )                     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 Trust
      Administrator 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  Trust
      Administrator,  on behalf 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  1999-12,  Class  A-R
Certificate  (the  "Class  A-R  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 Certificate
as they become due.

            5. That the Purchaser  understands that it may incur tax liabilities
with respect to the Class A-R  Certificate in excess of cash flows  generated by
the Class A-R Certificate.

            6. That the Purchaser will not transfer the Class A-R 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 Certificate in
connection  with the conduct of a trade or business within the United States and
has  furnished  the  transferor  and the Trust  Administrator  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 Trust  Administrator  an opinion  of a  nationally
recognized  tax  counsel  to the  effect  that the  transfer  of the  Class  A-R
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
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 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 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 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.



<PAGE>



            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 Certificate]





                                     [Date]

First Union National Bank
230 South Tryon Street
Charlotte, North Carolina 28288

      Re:   NORWEST ASSET SECURITIES CORPORATION,
            SERIES 1999-12, CLASS A-R         
            -------------------------------------

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 1999-12
                   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 1999-12, 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 April 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"),  First Union  National  Bank, as trust  administrator  (the
"Trust  Administrator")  and the United  States  Trust  Company of New York,  as
trustee  (the  "Trustee"),  of Norwest  Asset  Securities  Corporation  Mortgage
Pass-Through Certificates, Series 1999-12.

            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 Trust Administrator 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)  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 Trust  Administrator  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 Trust Administrator,  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 January 28, 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  Trust   Administrator  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 Trust  Administrator shall require, in
order  to  assure  compliance  with  such  laws,  that  the  Certificateholder's
prospective  transferee certify to the Seller and the Trust  Administrator 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 Trust  Administrator  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 Trust
Administrator,  the Master  Servicer or the Seller.  Any such  Certificateholder
desiring to effect such transfer shall,  and does hereby agree to, indemnify the
Trustee, the Trust Administrator,  the Master Servicer,  any Paying Agent acting
on behalf of the Trust  Administrator  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 Trust  Administrator
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 ransfer.



<PAGE>




            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 1999-12
                      CLASS [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 1999-12, Class
[B-1][B-2][B-3]  Certificates (the "Class [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 April 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"),  First Union  National  Bank, as trust  administrator  (the
"Trust  Administrator")  and the United  States  Trust  Company of New York,  as
trustee  (the  "Trustee")  of  Norwest  Asset  Securities  Corporation  Mortgage
Pass-Through Certificates, Series 1999-12.

            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 Trust Administrator 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 [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
      [B-1][B-2][B-3]  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 Trust Administrator 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
      Trust Administrator, 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

                          Star Bank Servicing Agreement

                 GMAC Mortgage Corporation Servicing Agreement

              The Huntington Mortgage Company Servicing Agreement

                 Bank of America, NT & SA Servicing Agreement

                First Union Mortgage Corp. Servicing Agreement

              National City Mortgage Company 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 into as of , 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 1999-12, Class
____ (the "Class B Certificates"). The Class B Certificates were issued pursuant
to a Pooling and  Servicing  Agreement  dated as of April 28, 1999 among Norwest
Asset Securities Corporation, as seller (the "Seller"),  Norwest Bank Minnesota,
National  Association,  as Master Servicer,  First Union National Bank, as Trust
Administrator, and United States Trust Company of New York, 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 I

                                   DEFINITIONS

            Section 1.01      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 A-1 by Standard  and Poor's  ("S&P") or at least
F-1 by  Fitch  IBCA,  Inc.  ("Fitch")  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 Fitch or S&P, (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 F-1 by
Fitch or A-1 by S&P or (z) the  depository  institution  or trust company is one
that is acceptable to either Fitch or S&P 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 II

                          SPECIAL SERVICING PROCEDURES

            Section 2.01      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 2.02      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 2.03      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 2.04      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 III

                       COLLATERAL FUND; SECURITY INTEREST

            Section 3.01      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 1999-12. 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 3.02      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 3.03      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 IV

                            MISCELLANEOUS PROVISIONS

            Section 4.01      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 4.02      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 4.03      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 4.04      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)   bin the case of the Purchaser,

                  ______________________________
                  ______________________________
                  ______________________________
                  Attention: ___________________

            Section 4.05      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 4.06      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 4.07      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 4.08      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 4.09      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.



<PAGE>




            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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