MORTGAGE PASS THROUGH CERT SERIES 1999-26
8-K/A, 2000-01-13
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 8-K/A

                        AMENDMENT NO. 1 TO CURRENT REPORT

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


Date of Report: January 13, 2000
(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

            Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant hereby amends its Current Report on Form 8-K, dated November 23,
1999 and filed with the Commission on December 8, 1999 (the "Current Report") by
replacing Exhibit No. 4 attached to the Current Report with Exhibit No. 4
attached hereto.



<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 November 23, 1999, among Norwest
                                         Asset Securities Corporation, Norwest
                                         Bank Minnesota, National Association
                                         and First Union National Bank, as
                                         trustee.



<PAGE>




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


                                       NORWEST ASSET SECURITIES CORPORATION

January 13, 2000

                                       -----------------------------------------
                                       Alan McKenney
                                       Vice President




<PAGE>







                                    INDEX TO EXHIBITS

Exhibit No.                 Description                         Paper (P) or
                                                                Electronic (E)
- -------------               ---------------                     ---------------
(EX-4)                      Pooling and Servicing Agreement,          E
                            dated as of November 23, 1999
                            among Norwest Asset Securities
                            Corporation, Norwest Bank
                            Minnesota, National Association
                            and First Union National Bank, as
                            trustee.







  ===========================================================================



                      NORWEST ASSET SECURITIES CORPORATION

                                    (Seller)

                                       and

                 NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION

                                (Master Servicer)

                                       and

                            FIRST UNION NATIONAL BANK

                                    (Trustee)




                         POOLING AND SERVICING AGREEMENT

                          Dated as of November 23, 1999

                               $229,365,447.09

                       Mortgage Pass-Through Certificates
                                 Series 1999-26



  ===========================================================================

<PAGE>




                                TABLE OF CONTENTS




                                    ARTICLE I

                                   DEFINITIONS

Section 1.01. Definitions..................................................
Section 1.02. Acts of Holders..............................................
Section 1.03. Effect 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 Trustee........................................
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 Trustee......................
Section 3.04. Trustee to Cooperate; Release of Owner Mortgage Loan
               Files.......................................................
Section 3.05. Reports to the Trustee; 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. 1934 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;
               Reports to the Trustee, Ambac and the Seller................
Section 4.05. Reports to Mortgagors and the Internal Revenue Service.......
Section 4.06. Reserve Funds................................................
Section 4.07. Distributions in Reduction of the Class A-2 Certificates.....
Section 4.08. Policy Matters...............................................
Section 4.09. 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 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. Trustee to Act; Appointment of Successor.....................
Section 7.06. Notification to Certificateholders...........................


                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

Section 8.01. Duties of Trustee............................................
Section 8.02. Certain Matters Affecting the Trustee........................
Section 8.03. Trustee Not Required to Make Investigation...................
Section 8.04. Trustee Not Liable for Certificates or Mortgage Loans........
Section 8.05. Trustee 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............


                                   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 and Ambac................
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...................................
Section 11.27. Ambac Contact Person........................................



<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 1999-26 Certificates
EXHIBIT D         -     Reserved
EXHIBIT E         -     Custodial Agreement
EXHIBIT F-1       -     Schedule of Mortgage Loans Serviced by Norwest
                        Mortgage in locations other than Frederick, Maryland
EXHIBIT F-2       -     Schedule of Mortgage Loans Serviced by Norwest
                        Mortgage from Frederick, Maryland
EXHIBIT F-3       -     Schedule of Mortgage Loans Serviced by Other Servicers
EXHIBIT G         -     Request for Release
EXHIBIT H         -     Affidavit Pursuant to Section 860E(e)(4) of the
                        Internal Revenue Code of 1986, as amended, and for
                        Non-ERISA Investors
EXHIBIT I         -     Letter from Transferor of Residual Certificates
EXHIBIT J         -     Transferee's Letter (Class [A-PO] [B-4] [B-5] [B-6]
                        Certificates)
EXHIBIT K         -     Transferee's Letter (Class [B-1] [B-2] [B-3]
                        Certificates)
EXHIBIT L         -     Servicing Agreements
EXHIBIT M         -     Form of Special Servicing Agreement
EXHIBIT N         -     Policy


<PAGE>








            This Pooling and Servicing Agreement,  dated as of November 23, 1999
executed  by NORWEST  ASSET  SECURITIES  CORPORATION,  as Seller,  NORWEST  BANK
MINNESOTA,  NATIONAL  ASSOCIATION,  as Master  Servicer and FIRST UNION NATIONAL
BANK, as Trustee.

                                WITNESSETH THAT:

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


                                    ARTICLE I

                                   DEFINITIONS

SECTION 1.01. DEFINITIONS.

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

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

            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.

            Ambac:  Ambac Assurance  Corporation,  a  Wisconsin-domiciled  stock
insurance company, or any successor thereto.

            Ambac Contact Person:  The officer designated by the Master Servicer
to provide  information to Ambac pursuant to Section 4.08(g).  The initial Ambac
Contact Person is appointed in Section 11.27.

            Ambac  Default:   The  existence  and  continuance  of  any  of  the
following:

            (a)  Ambac  fails  to make a  payment  required  under a  policy  in
      accordance with its terms;

            (b) Ambac (A) files any petition or commences any case or proceeding
      under  any  provision  or  similar   federal  or  state  law  relating  to
      insolvency, bankruptcy, rehabilitation, liquidation or reorganization, (B)
      makes a general assignment for the benefit of its creditors, or (C) has an
      order for relief  entered  against it under the United  States  Bankruptcy
      code  or  any  similar  federal  or  state  law  relating  to  insolvency,
      bankruptcy,  rehabilitation,  liquidation or reorganization which is final
      and nonappealable; or

            (c) a court of competent  jurisdiction,  the New York  Department of
      Insurance  or other  competent  regulatory  authority  enters a final  and
      nonappealable  order,  judgment  or decree  (1)  appointing  a  custodian,
      trustee, agent or receiver for Ambac or for all or any material portion of
      its property or (2)  authorizing  the taking of possession by a custodian,
      trustee, agent or receiver of Ambac (or the taking of possession of all or
      any material portion of the property of Ambac).

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

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

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

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

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

            Bankruptcy  Loss Amount:  As of any  Distribution  Date prior to the
first  anniversary of the Cut-Off Date,  the  Bankruptcy  Loss Amount will equal
$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)  (or,  in the case of the Class A-2  Certificates,  without
giving  effect to the guaranty  provided by Ambac) by either Rating Agency minus
(2) the aggregate  amount of Bankruptcy  Losses  allocated solely to the Class B
Certificates in accordance with Section 4.02(a) since the Relevant  Anniversary.
On and after the Cross-Over Date the Bankruptcy Loss Amount shall be zero.

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

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

            Book-Entry Certificate: Any one of the Class A-1 Certificates, Class
A-2 Certificates 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  Custodian:   Initially,   First  Union  National  Bank;
thereafter any other  Certificate  Custodian  acceptable to The Depository Trust
Company and selected by the Trustee.

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

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

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

            Class A Certificate:  Any one of the Class A-1  Certificates,  Class
A-2  Certificates,  Class A-3 Certificates,  Class A-4 Certificates,  Class A-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-3 and  Class  A-PO
Certificates),  the amount  distributable  to such Class of Class A Certificates
pursuant to Paragraphs first, second and third clause (A) of Section 4.01(a). As
to the Class A-3 Certificates,  the amount  distributable to such Class pursuant
to Paragraph 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 sum
of (a) the Class A Interest Accrual Amount (determined  without regard to clause
(ii) of the  definition  of each  Interest  Accrual  Amount) and (b) the Premium
Payment  (determined  without regard to clause (ii) of the definition of Premium
Payment).

            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  Shortfalls,  (iii) the Premium Payment,  (iv)
the  Premium  Unpaid  Shortfall  and (v) the  Class A Non-PO  Optimal  Principal
Amount.

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

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

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

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

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

            Class A Non-PO Principal 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-4
and Class A-R Certificates,  the Class A Fixed  Pass-Through Rate. The Class A-3
and 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 November 2004, 100%. As to any Distribution
Date  subsequent  to November 2004 to and  including  the  Distribution  Date in
November 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 November 2005 to and  including  the  Distribution  Date in
November 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 November 2006 to and  including  the  Distribution  Date in
November 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 November 2007 to and  including  the  Distribution  Date in
November 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 November 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  November
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  December 2004 and November 2005,
(2) 35% of the  Original  Class B Principal  Balance if such  Distribution  Date
occurs  between and including  December 2005 and November  2006,  (3) 40% of the
Original Class B Principal  Balance if such Distribution Date occurs between and
including  December  2006 and November  2007,  (4) 45% of the  Original  Class B
Principal  Balance  if such  Distribution  Date  occurs  between  and  including
December 2007 and November  2008,  and (5) 50% of the Original Class B Principal
Balance if such  Distribution  Date occurs during or after December  2008.  With
respect to any Distribution  Date on which the Class A Prepayment  Percentage is
reduced below the Class A Prepayment Percentage for the prior Distribution Date,
the Master  Servicer  shall  certify  to the  Trustee,  based  upon  information
provided  by each  Servicer  as to the  Mortgage  Loans  serviced by it that the
criteria set forth in the preceding sentence are met.

            Class A Principal  Balance:  As of any date,  an amount equal to the
sum of the  Principal  Balances  for  the  Class  A-1  Certificates,  Class  A-2
Certificates,  Class  A-3  Certificates,  Class  A-4  Certificates,  Class  A-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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit A-1 and Exhibit C hereto.

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

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

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

            Class A-2  Distribution  Deficiency:  With  respect to the Class A-2
Certificates  on each  Distribution  Date, the sum of (i) the Class A-2 Interest
Loss Amount for such  Distribution  Date and (ii) the Class A-2  Principal  Loss
Amount for such Distribution.

            Class A-2 Interest Loss Amount:  As to any  Distribution  Date,  the
excess, if any, of (i) the Interest Accrual Amount of the Class A-2 Certificates
(determined without regard to clause (ii) of the definition thereof), net of any
Non-Supported  Interest Shortfalls  allocated to the Class A-2 Certificates that
are covered by the Reserve Fund over (ii) the amount available to be distributed
in respect of the Class A-2 Certificates on such  Distribution  Date pursuant to
Paragraph first of Section 4.01(a).

            Class A-2 Principal Loss Amount:  As to any  Distribution  Date, the
sum of, without  duplication,  (i) the Class A Loss  Percentage of the Class A-2
Certificates of the principal  portion of Realized Losses allocated to the Class
A  Certificates  (other than the Class A-PO  Certificates)  with respect to such
Distribution  Date pursuant to Section 4.02(b) and (ii) any amount  allocated to
the Class  A-2  Certificates  after the  Cross-Over  Date with  respect  to such
Distribution  Date pursuant to the third sentence in the definition of Principal
Balance of the Class A-2 Certificates.

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

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

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

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

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

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

            Class A-PO Deferred Amount:  For any Distribution  Date prior to the
Cross-Over  Date, the difference  between (A) the sum of (x) the amount by which
the sum of the Class A-PO Optimal Principal  Amounts for all prior  Distribution
Dates exceeded the amounts  distributed on the Class A-PO  Certificates  on such
prior  Distribution  Dates  pursuant to  Paragraph  third  clause (B) of Section
4.01(a)  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
       Trustee in respect of such defective Mortgage Loan.

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

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

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

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

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

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

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

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

            Class B Loss Percentage:  As to any Determination Date and any Class
of Class B Certificates then outstanding,  the percentage calculated by dividing
the  Principal  Balance  of  such  Class  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, 7.250% 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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-1 and Exhibit C hereto.

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

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

            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 Trustee in respect of
       such defective Mortgage Loan;

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

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

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

            Class B-1 Principal Balance: As to the first Determination Date, the
Original Class B-1 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-1 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-1 Certificates on
prior  Distribution  Dates (A) pursuant to Paragraph  seventh of Section 4.01(a)
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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-2 and Exhibit C hereto.

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

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

            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 Trustee in respect of
       such defective Mortgage Loan;

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

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

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

            Class B-2 Principal Balance: As to the first Determination Date, the
Original Class B-2 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-2 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-2 Certificates on
prior  Distribution Dates (A) pursuant to Paragraph tenth of Section 4.01(a) 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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-3 and Exhibit C hereto.

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

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

            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 Trustee in respect of
       such defective Mortgage Loan;

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

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

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

            Class B-3 Principal Balance: As to the first Determination Date, the
Original Class B-3 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-3 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-3 Certificates on
prior Distribution Dates (A) pursuant to Paragraph thirteenth of Section 4.01(a)
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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-4 and Exhibit C hereto.

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

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

            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 Trustee in respect of
       such defective Mortgage Loan;

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

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

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

            Class B-4 Principal Balance: As to the first Determination Date, the
Original Class B-4 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-4 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-4 Certificates on
prior Distribution Dates (A) pursuant to Paragraph  sixteenth of Section 4.01(a)
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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-5 and Exhibit C hereto.

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

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

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

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

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

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

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

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

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

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

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

            Class B-5 Principal Balance: As to the first Determination Date, the
Original Class B-5 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-5 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-5 Certificates on
prior Distribution Dates (A) pursuant to Paragraph nineteenth of Section 4.01(a)
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
Trustee  and  authenticated  by the  Trustee  or  the  Authenticating  Agent  in
substantially the form set forth in Exhibit B-6 and Exhibit C hereto.

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

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

            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 Trustee in respect of
       such defective Mortgage Loan;

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

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

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

            Class B-6 Principal Balance: As to the first Determination Date, the
Original Class B-6 Principal Balance.  As of any subsequent  Determination Date,
the lesser of (i) the Original  Class B-6 Principal  Balance less the sum of (a)
all amounts  previously  distributed in respect of the Class B-6 Certificates on
prior Distribution Dates pursuant to Paragraph  twenty-second of Section 4.01(a)
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  Indirect  Participant:  A  broker,  dealer,  bank,
financial  institution  or other  Person  that  clears  securities  transactions
through  or  maintains  a  custodial   relationship   with  a  Clearing   Agency
Participant, either directly or indirectly.

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

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

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

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

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

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

            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
and the Premium  Payment  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 Trustee,  substantially in the form of Exhibit E hereto, as the
same may be amended or modified from time to time in  accordance  with the terms
thereof.

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

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

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

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

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

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

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

            Deceased  Holder:  A Beneficial Owner of a Class A-2 Certificate who
was living at the time such interest was acquired, whose death is deemed to have
occurred pursuant to Section 4.07(b),  and with respect to which the Trustee has
received  through the  Clearing  Agency  evidence of death  satisfactory  to the
Trustee and any tax waivers requested by the Trustee.

            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 7.250%.

            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.

            Dual Collateral Pledge Agreement:  As defined in the NOVUS Servicing
Agreement.

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

            Eligible Account:  One or more accounts (i) that are maintained with
a depository institution (which may be the Master Servicer) whose long-term debt
obligations  (or,  in the case of a  depository  institution  which is part of a
holding company structure, the long-term debt obligations of such parent holding
company)  at the  time of  deposit  therein  are  rated  at  least  "AA" (or the
equivalent) by each of the Rating Agencies, (ii) the deposits in which are fully
insured  by the FDIC  through  either  the Bank  Insurance  Fund or the  Savings
Association  Insurance Fund, (iii) the deposits in which are insured by the FDIC
through either the Bank Insurance Fund or the Savings Association Insurance Fund
(to the  limit  established  by the FDIC) and the  uninsured  deposits  in which
accounts are otherwise secured,  as evidenced by an Opinion of Counsel delivered
to the Trustee, such that the Trustee, on behalf of the Certificateholders has a
claim with respect to the funds in such accounts or a perfected  first  security
interest  against any collateral  securing such funds that is superior to claims
of any other  depositors or creditors of the depository  institution  with which
such accounts are maintained,  (iv) that are trust accounts  maintained with the
trust department of a federal or state chartered depository institution or trust
company  acting in its  fiduciary  capacity  or (v) such other  account  that is
acceptable  to each of the Rating  Agencies and would not cause the Trust Estate
to fail to qualify as 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)  (or,  in the case of the  Class  A-2  Certificates,
       without giving effect to the guaranty provided by Ambac) 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)  (or,  in the case of the  Class  A-2  Certificates,
       without giving effect to the guaranty provided by Ambac) by either Rating
       Agency;

                 (iv) certificates of deposit, demand or time deposits,  federal
       funds or banker's  acceptances  issued by any  depository  institution or
       trust company  incorporated under the laws of the United States or of any
       state  thereof  and subject to  supervision  and  examination  by federal
       and/or state  banking  authorities,  provided that the  commercial  paper
       and/or debt  obligations of such depository  institution or trust company
       (or in the case of the  principal  depository  institution  in a  holding
       company system,  the commercial paper or debt obligations of such holding
       company)  are  then  rated  in the  highest  short-term  or  the  highest
       long-term  rating  category  for such  securities  of each of the  Rating
       Agencies,  or such  lower  rating  categories  as would not result in the
       downgrading  or  withdrawal  of the rating  then  assigned  to any of the
       Certificates  by either  Rating  Agency  or  result in any of such  rated
       Certificates  being  placed  on  credit  review  status  (other  than for
       possible  upgrading)  (or,  in the case of the  Class  A-2  Certificates,
       without giving effect to the guaranty provided by Ambac) 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)  (or,  in the case of the  Class  A-2  Certificates,
       without giving effect to the guaranty provided by Ambac) 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)  (or,  in the case of the  Class  A-2  Certificates,
       without giving effect to the guaranty provided by Ambac) by either Rating
       Agency.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

            Final Scheduled Maturity Date: The Final Scheduled Maturity Date for
the Class A-1, Class A-2,  Class A-3,  Class A-4,  Class A-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
December 25, 2029 which  corresponds to the "latest possible  maturity date" for
purposes of Section 860G(a)(1) of the Internal Revenue Code of 1986, as amended.

            Fixed  Retained  Yield:  The fixed  percentage  of  interest on each
Mortgage Loan with a Mortgage  Interest Rate greater than the sum of (a) 7.250%,
(b) the Servicing Fee Rate and (c) the Master  Servicing Fee Rate, which will be
determined on a loan by loan basis and will equal the Mortgage  Interest Rate on
each Mortgage  Loan minus the sum of (a), (b) and (c),  which is not assigned to
and not part of the Trust Estate.

            Fixed Retained Yield Rate: With respect to each Mortgage Loan, a per
annum rate equal to the greater of (a) zero and (b) the Mortgage  Interest  Rate
on such Mortgage  Loan minus the sum of (i) 7.250%,  (ii) the Servicing Fee Rate
and (iii) the Master Servicing Fee Rate.

            FNMA:  Fannie Mae or any successor thereto.

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

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

            Fraud Loss  Amount:  As of any  Distribution  Date after the Cut-Off
Date an amount equal to: (X) prior to the first  anniversary of the Cut-Off Date
an amount  equal to  $4,587,308.94  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.

            Individual  Class A-2  Certificate:  A Class A-2  Certificate  which
evidences $1,000 Original Principal Balance.

            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-3 and Class A-PO Certificates),
(a) the  product of (i) 1/12th of the Class A  Pass-Through  Rate for such Class
and (ii) the  Principal  Balance  of such  Class  as of the  Determination  Date
preceding such  Distribution  Date minus (b) the Class A Interest  Percentage of
such Class of (i) any Non-Supported  Interest Shortfall allocated to the Class A
Certificates  and the Premium  Payment 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 and
the Premium Payment 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  and the Premium  Payment on or after the
Cross-Over  Date  pursuant  to  Section  4.02(e).  The Class A-3 and 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).

            Lehman Brothers: Lehman Brothers, Inc. or its successor in interest.

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

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

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

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

            Living Holder:  Beneficial Owner of the Class A-2 Certificates other
than a Deceased Holder.

            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.

            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.

            MERS:  As defined in Section 2.01.

            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.

            MLCC Additional Collateral: The Additional Collateral, as defined in
the MLCC Servicing Agreement.

            MLCC Additional Collateral Mortgage Loans: The Additional Collateral
Mortgage Loans, as defined in the MLCC Servicing Agreement.

            MLCC  Mortgage  Loan Purchase  Agreement:  The master  mortgage loan
purchase  agreement  dated as of April 1,  1998  between  Merrill  Lynch  Credit
Corporation, as seller, and Norwest Funding, Inc., as purchaser.

            MLCC  Servicing  Agreement:  The  Servicing  Agreement  executed  by
Merrill Lynch Credit Corporation, as Servicer.

            MLCC Surety Bond:  The Surety Bond, as defined in the MLCC Servicing
Agreement.

            Month End Interest:  As defined in each Servicing  Agreement or with
respect to the MLCC Servicing  Agreement,  the amount  defined as  "Compensating
Interest."

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

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

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

            Mortgage  100sm Pledge  Agreement:  As defined in the MLCC Servicing
Agreement.

            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 November 23, 1999 between Norwest Mortgage, as seller, and
the Seller, as purchaser.

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

            Mortgage Loan Schedule:  The list of the Mortgage Loans  transferred
to the  Trustee on the  Closing  Date as part of the Trust  Estate and  attached
hereto as Exhibits  F-1, F-2 and F-3,  which list may be amended  following  the
Closing Date upon  conveyance of a Substitute  Mortgage Loan pursuant to Section
2.02 or 2.03  and  which  list  shall  set  forth  at a  minimum  the  following
information  of the close of business on the Cut-Off  Date (or,  with respect to
Substitute  Mortgage  Loans,  as  of  the  close  of  business  on  the  day  of
substitution)  as to each  Mortgage  Loan:  (i) the  Mortgage  Loan  identifying
number; (ii) the city, state and zip code of the Mortgaged  Property;  (iii) the
type of property; (iv) the Mortgage Interest Rate; (v) the Net Mortgage Interest
Rate; (vi) the Monthly Payment; (vii) the original number of months to maturity;
(viii) the scheduled maturity date; (ix) the Cut-Off Date Principal Balance; (x)
the  Loan-to-Value  Ratio at  origination;  (xi) whether such Mortgage Loan is a
Subsidy Loan;  (xii)  whether such Mortgage Loan is covered by primary  mortgage
insurance;  (xiii) the Servicing Fee Rate;  (xiv) the Master Servicing Fee Rate;
(xv)  Fixed  Retained  Yield,  if  applicable;  and (xvi) for each  Exhibit  F-3
Mortgage Loan, the name of the Servicer with
      respect thereto.

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

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

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

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

            Mortgagor: The obligor on a Mortgage Note.

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

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

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

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

            Net Rounding  Amount:  With respect to any  Distribution  Date,  the
amount  (which may be  negative) of any  required  withdrawls  from the Rounding
Account  less any  required  payments  thereto,  as of such  Distribution  Date,
pursuant to Section 4.07(e).

            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 7.250%.

            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 Trustee,  as
the case may be, and which the  Servicer,  the Master  Servicer  or the  Trustee
determines will not, or in the case of a proposed Periodic Advance would not, be
ultimately  recoverable from Liquidation Proceeds or other recoveries in respect
of the related  Mortgage Loan.  The  determination  by the Servicer,  the Master
Servicer or the Trustee  (i) that it has made a  Nonrecoverable  Advance or (ii)
that any proposed Periodic  Advance,  if made, would constitute a Nonrecoverable
Advance,  shall  be  evidenced  by an  Officer's  Certificate  of  the  Servicer
delivered to the Master  Servicer for  redelivery to the Trustee or, in the case
of a Master  Servicer  determination,  an  Officer's  Certificate  of the Master
Servicer  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  and the Premium
Payment  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 and Exhibit F-2 Mortgage  Loans
initially by Norwest Mortgage.

            Notice of  Nonpayment:  The notice to be delivered by the Trustee to
Ambac with  respect to any  Distribution  Date as to which  there is a Class A-2
Distribution Deficiency, which shall be in the form attached to the Policy.

            NOVUS Additional Collateral:  The Additional Collateral,  as defined
in the NOVUS Servicing Agreement.

            NOVUS   Additional   Collateral   Mortgage  Loans:   The  Additional
Collateral Mortgage Loans, as defined in the NOVUS Servicing Agreement.

            NOVUS  Servicing  Agreement:  The  Servicing  Agreement  executed by
NOVUS, as Servicer.

            NOVUS  Surety  Bond:  The  Surety  Bond,  as  defined  in the  NOVUS
Servicing Agreement.

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

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

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

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

            Original Class A Non-PO Principal  Balance:  The sum of the Original
Principal  Balances of the Class A-1,  Class A-2, Class A-3, Class A-4 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 Trustee (or the
Custodian,  if any) for each Mortgage Loan that contains the documents specified
in the  Servicing  Agreements  or, in the case of each Mortgage Loan serviced by
Bank United or Merrill Lynch Credit Corporation,  the documents specified in the
Bank United  Mortgage  Loan Sale  Agreement  and the MLCC Mortgage Loan Purchase
Agreement  under their  respective  "Owner  Mortgage  Loan File"  definition  or
similar  definition  and/or  other  provisions  requiring  delivery of specified
documents  to the owner of the  Mortgage  Loan in  connection  with the purchase
thereof, and any additional documents required to be added to the Owner Mortgage
Loan File pursuant to this Agreement.

            Parent Power(R)  Guaranty  Agreement for Real Estate:  As defined in
the MLCC Servicing Agreement.

            Parent  Power(R)  Guaranty  and  Security   Agreement  for  Security
Account: As defined in the MLCC Servicing 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.  The initial  Paying
Agent is appointed in Section 4.03(a).

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

            Percentage  Interest:  With respect to a Class A Certificate  (other
than Class A-2  Certificates),  the undivided  percentage  interest  obtained by
dividing  the original  principal  balance of such  Certificate  by the Original
Principal Balance of such Class of Class A Certificates. With respect to a Class
A-2  Certificate,  the undivided  percentage  interest  obtained by dividing the
current  principal  balance of such Certificate by the 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 Trustee  hereunder,  the amount of any such advances
being equal to the total of all Monthly Payments (adjusted,  in each case (i) in
respect  of  interest,  to  the  applicable  Mortgage  Interest  Rate  less  the
applicable Servicing Fee in the case of Periodic Advances made by a Servicer and
to the  applicable Net Mortgage  Interest Rate in the case of Periodic  Advances
made by the Master  Servicer  or Trustee  and (ii) by the amount of any  related
Debt Service Reductions or reductions in the amount of interest collectable from
the Mortgagor  pursuant to the Soldiers' and Sailors'  Civil Relief Act of 1940,
as  amended,  or  similar  legislation  or  regulations  then in  effect) on the
Mortgage  Loans,  that (x) were  delinquent  as of the close of  business on the
related  Determination  Date,  (y) were not the  subject of a previous  Periodic
Advance by such Servicer or of a Periodic  Advance by the Master Servicer or the
Trustee,  as the case may be and (z) have  not  been  determined  by the  Master
Servicer, such Servicer or Trustee to be Nonrecoverable Advances.

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

            Plan:  As defined in Section 5.02(c).

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

            Policy:   The  irrevocable  Ambac  Insurance  Policy  No.  AB0321BE,
including any  endorsements  thereto,  issued by Ambac with respect to the Class
A-2 Certificates, in the form attached hereto as Exhibit N.

            Policy Payments Account:  The account maintained pursuant to Section
4.08(b).

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

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

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

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

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

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

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

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

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

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

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

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

                 (j) Net Foreclosure Profits;

                 (k) Month End Interest; and

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

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

            Premium Payment: As to any Distribution Date, (i) the product of (a)
1/12th of 0.060% and (b) the Principal  Balance of the Class A-2 Certificates as
of the  Determination  Date immediately  preceding such  Distribution Date minus
(ii)  the  Premium  Percentage  of  (x)  any  Non-Supported  Interest  Shortfall
allocated to the Class A  Certificates  and the Premium  Payment with respect to
such  Distribution  Date, (y) the interest  portion of any Excess Special Hazard
Losses,  Excess Fraud Losses and Excess Bankruptcy Losses allocated to the Class
A Certificates  and the Premium Payment with respect to such  Distribution  Date
pursuant to Section 4.02(e) and (z) the interest  portion of any Realized Losses
(other  than  Excess  Special  Hazard  Losses,  Excess  Fraud  Losses and Excess
Bankruptcy Losses) allocated to the Class A Certificates and the Premium Payment
on or after the Cross-Over Date pursuant to Section 4.02(e).

            Premium  Percentage:  As to any  Distribution  Date,  the percentage
calculated by dividing the Premium Payment  (determined without regard to clause
(ii) of the definition  thereof) by the sum of (a) the Class A Interest  Accrual
Amount  (determined  without  regard to clause  (ii) of the  definition  of each
Interest Accrual Amount) and (b) the Premium Payment  (determined without regard
to clause (ii) of the definition of Premium Payment).

            Premium Shortfall Amount: As to any Distribution Date, any amount by
which the Premium  Payment  with respect to such  Distribution  Date exceeds the
amount  distributed  to Ambac on such  Distribution  Date  pursuant to Paragraph
first of Section 4.01(a).

            Premium Unpaid Shortfall:  As to any Distribution  Date, the amount,
if any,  by which the  aggregate  of the  Premium  Shortfall  Amounts  for prior
Distribution  Dates is in excess of the  amounts  distributed  to Ambac on prior
Distribution Dates pursuant to Paragraph second of Section 4.01(a).

            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:


Distribution Date Occurring In                              Prepayment Shift
                                                            Percentage

December 1999 through November 2004............                0%
December 2004 through November 2005............               30%
December 2005 through November 2006............               40%
December 2006 through November 2007............               60%
December 2007 through November 2008............               80%
December 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,  (b) the  Realized  Losses  allocated  through  such
Determination  Date to such Class  pursuant  to Section  4.02(b) and (c) the Net
Rounding  Amount.  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 lesser of (i) 100% and (ii) (a) the sum of
the Principal  Balance of the Class A-4 Certificates and $28,000,000  divided by
(b) 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  (other than the
Class A-R Certificate) are DCR and Moody's. The Rating Agency for the Class A-R,
Class B-1, Class B-2, Class B-3, Class B-4 and Class B-5 Certificates is DCR. If
any such agency or a successor is no longer in existence,  "Rating Agency" shall
be such statistical credit rating agency, or other comparable Person, designated
by the Seller, notice of which designation shall be given to the Trustee,  Ambac
and the Master  Servicer.  References  herein to the highest  short-term  rating
category of a Rating Agency shall mean D-1+ in the case of DCR, P-1+ in the case
of Moody's and in the case of any other Rating Agency shall mean its  equivalent
of such ratings. References herein to the highest long-term rating categories of
a Rating Agency shall mean AAA, and in the case of any other Rating Agency shall
mean its equivalent of such rating without any plus or minus.

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

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

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

            Relevant Anniversary: See "Bankruptcy Loss Amount."

            REMIC:  A "real estate  mortgage  investment  conduit" as defined in
Code Section  860D.  "REMIC"  means the REMIC  constituted  by the Trust Estate,
other than the Reserve Fund, the Policy and the Policy Payment Account.

            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.

            Reserve  Fund:  The  separate  non-interest  bearing  trust  account
established  with the Trustee and maintained by the Trustee  pursuant to Section
4.06 for the benefit of the Class A-2 Certificateholders. The Reserve Fund shall
be an Eligible Account.

            Reserve  Withdrawal:  With  respect to any  Distribution  Date,  the
lesser of (a) the amount on deposit  in the  Reserve  Fund and (b) the amount of
Non-Supported Interest Shortfalls allocated to the Class A-2 Certificates.

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

            Rounding Account:  The special account  established with the Trustee
and maintained by the Trustee pursuant to Section 4.07(e).  The Rounding Account
shall be an Eligible Account.

            Rounding Amount:  With respect to any Distribution Date, the amount,
if any,  required to be withdrawn from the Rounding  Account pursuant to Section
4.07(e).

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

            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.

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

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

            Servicers:  Each of Norwest Mortgage, Inc., Columbia National, Inc.,
SunTrust  Mortgage,  Inc.,  NOVUS  Financial  Corporation,  Merrill Lynch Credit
Corporation,  Home Savings of America, FSB, Bank United,  National City Mortgage
Company,  FT Mortgage  Companies and  Countrywide  Home Loans,  Inc. 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 OCCURRING IN               SHIFT PERCENTAGE
            ------------------------------               ----------------

            December 1999 through November 2004.......         0%
            December 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:

            (1)   normal wear and tear;

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

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

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

            Special Hazard Loss Amount:  As of any Distribution  Date, an amount
equal to  $2,293,654.47  minus the sum of (i) the  aggregate  amount of  Special
Hazard Losses  allocated  solely to the Class B Certificates  in accordance with
Section 4.02(a) and (ii) the Special Hazard Adjustment Amount (as defined below)
as most recently  calculated.  For each  anniversary  of the Cut-Off  Date,  the
Special Hazard  Adjustment  Amount shall be calculated and shall be equal to the
amount,  if any, by which the amount calculated in accordance with the preceding
sentence  (without  giving  effect  to  the  deduction  of  the  Special  Hazard
Adjustment Amount for such  anniversary)  exceeds the greater of (A) the product
of  the  Special  Hazard  Percentage  for  such  anniversary  multiplied  by the
outstanding principal balance of all the Mortgage Loans on the Distribution Date
immediately  preceding such  anniversary,  (B) twice the  outstanding  principal
balance  of the  Mortgage  Loan  in the  Trust  Estate  which  has  the  largest
outstanding  principal  balance on the Distribution  Date immediately  preceding
such  anniversary  and (C) that which is  necessary  to  maintain  the  original
ratings on the  Certificates as evidenced by letters to that effect delivered by
Rating  Agencies  to the  Master  Servicer  and the  Trustee.  On and  after the
Cross-Over Date, the Special Hazard Loss Amount shall be zero.

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

            Startup Day:  As defined in Section 2.05.

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

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

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

            Substitute Mortgage Loan:  As defined in Section 2.02.

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

            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 Rounding Account,  the rights of the Trustee,  to
receive the proceeds of all insurance  policies and  performance  bonds, if any,
required to be maintained  hereunder or under the related  Servicing  Agreement,
property  which  secured  a  Mortgage  Loan  and  which  has  been  acquired  by
foreclosure or deed in lieu of  foreclosure,  the Reserve Fund and the rights of
the Trustee under the Policy.

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

            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.  Proof of execution of any such  instrument or of a writing  appointing
any such  agent  shall be  sufficient  for any  purpose  of this  Agreement  and
conclusive  in favor of the  Trustee,  if made in the  manner  provided  in this
Section 1.02. The Trustee shall promptly  notify the Master  Servicer in writing
of the receipt of any such instrument or writing.

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

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

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

SECTION 1.03. EFFECT OF HEADINGS AND TABLE OF CONTENTS.

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

SECTION 1.04. BENEFITS OF AGREEMENT.

            Nothing  in  this  Agreement  or in  the  Certificates,  express  or
implied,  shall give to any Person, other than the parties to this Agreement and
their  successors  hereunder and the Holders of the  Certificates  and Ambac 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, (d)
all of the  Seller's  right,  title and interest in and to each  Mortgage  100SM
Pledge  Agreement,  each Parent  Power(R)  Guaranty and Security  Agreement  for
Securities  Account and each Parent Power(R) Guaranty  Agreement for Real Estate
with respect to each MLCC  Additional  Collateral  Mortgage Loan, (e) all of the
Seller's  right,  title  and  interest  in and to each  Dual  Collateral  Pledge
Agreement with respect to each NOVUS Additional Collateral Mortgage Loan and (f)
proceeds of all the foregoing.

            In connection with such assignment,  the Seller shall,  with respect
to each Mortgage Loan,  deliver,  or cause to be delivered,  to the Trustee,  as
initial  Custodian,  on or before the Closing Date, an Owner Mortgage Loan File.
If any  Mortgage  or an  assignment  of a Mortgage  to the  Trustee or any prior
assignment is in the process of being  recorded on the Closing Date,  the Seller
shall deliver a copy thereof,  certified by Norwest  Mortgage or the  applicable
Norwest  Mortgage  Correspondent  to be a true and complete copy of the document
sent for recording, and the Seller shall use its best efforts to cause each such
original  recorded  document or  certified  copy  thereof to be delivered to the
Trustee promptly  following its recordation,  but in no event later than one (1)
year  following  the Closing Date. If any Mortgage has been recorded in the name
of Mortgage Electronic  Registration  System, Inc. ("MERS") or its designee,  no
assignment  of Mortgage in favor of the Trustee  will be required to be prepared
or delivered  and  instead,  the Master  Servicer  shall take all actions as are
necessary  to cause  the Trust  Estate  to be shown as the owner of the  related
Mortgage  Loan on the records of MERS for the purpose of the system of recording
transfers of beneficial  ownership of mortgages  maintained by MERS.  The Seller
shall also cause to be delivered to the Trustee any other original mortgage loan
document to be included in the Owner  Mortgage  Loan File if a copy  thereof has
been  delivered.  The Seller shall pay from its own funds,  without any right of
reimbursement  therefor,  the  amount of any  costs,  liabilities  and  expenses
incurred by the Trust  Estate by reason of the failure of the Seller to cause to
be delivered to the Trustee  within one (1) year  following the Closing Date any
original  Mortgage  or  assignment  of a Mortgage  (except  with  respect to any
Mortgage  recorded  in the name of MERS) not  delivered  to the  Trustee  on the
Closing Date.

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

SECTION 2.02. ACCEPTANCE BY TRUSTEE.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

            (c) Upon discovery by either the Seller,  the Master  Servicer,  the
Trustee or the Custodian that any of the  representations and warranties made in
subsection  (b) above is not accurate  (referred  to herein as a "breach")  and,
except for a breach of the  representation  and warranty set forth in subsection
(b)(i), where such breach is a result of the Cut-Off Date Principal Balance of a
Mortgage  Loan  being  greater,  by $5,000 or  greater,  than the  Cut-Off  Date
Principal Balance of such Mortgage Loan indicated on the Mortgage Loan Schedule,
that  such  breach  materially  and  adversely  affects  the  interests  of  the
Certificateholders  in the related  Mortgage  Loan, the party  discovering  such
breach shall give prompt  written  notice to the other  parties  (any  Custodian
being so obligated under a Custodial  Agreement).  Within 60 days of the earlier
of its  discovery or its receipt of notice of any such breach,  the Seller shall
cure such breach in all  material  respects or shall either (i)  repurchase  the
Mortgage Loan or any property  acquired in respect thereof from the Trust Estate
at a price equal to (A) 100% of the unpaid  principal  balance of such  Mortgage
Loan  plus (B)  accrued  interest  at the Net  Mortgage  Interest  Rate for such
Mortgage  Loan through the last day of the month in which such  repurchase  took
place or (ii) if within  two years of the  Startup  Day,  or such  other  period
permitted by the REMIC  Provisions,  substitute  for such  Mortgage  Loan in the
manner described in Section 2.02. The purchase price of any repurchase described
in this paragraph and the Substitution  Principal  Amount,  if any, plus accrued
interest  thereon and the other amounts  referred to in Section  2.02,  shall be
deposited  in the  Certificate  Account.  It is  understood  and agreed that the
obligation of the Seller to  repurchase  or substitute  for any Mortgage Loan or
property  as to  which  such a  breach  has  occurred  and is  continuing  shall
constitute   the   sole   remedy    respecting   such   breach    available   to
Certificateholders  or the  Trustee  on behalf of  Certificateholders,  and such
obligation shall survive until termination of the Trust Estate hereunder.

SECTION 2.04. EXECUTION AND DELIVERY OF CERTIFICATES.

            The Trustee  acknowledges the assignment to it of the Mortgage Loans
and the delivery of the Owner Mortgage Loan Files to it, and,  concurrently with
such delivery, 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
December 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, any amounts received by it upon the
sale of any (A) MLCC Additional Collateral pursuant to the terms of the Mortgage
100SM Pledge Agreement,  the Parent Power(R) Guaranty and Security Agreement for
Securities Account or the Parent Power(R) Guaranty Agreement for Real Estate, or
(B) NOVUS  Additional  Collateral  pursuant to the terms of the Dual  Collateral
Pledge Agreement or any amounts received pursuant to the MLCC Surety Bond or the
NOVUS Surety Bond, and shall, in addition,  deposit into the Certificate Account
the following amounts, in the case of amounts specified in clause (i), not later
than the Distribution  Date on which such amounts are required to be distributed
to Certificateholders  and, in the case of the amounts specified in clause (ii),
not later than the Business Day next following the day of receipt and posting by
the Master Servicer:

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

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

            (c) The Master  Servicer  shall  cause the funds in the  Certificate
Account to be invested in Eligible  Investments.  No such  Eligible  Investments
will be sold or  disposed  of at a gain  prior to  maturity  unless  the  Master
Servicer has received an Opinion of Counsel or other evidence satisfactory to it
that such sale or  disposition  will not cause the Trust Estate to be subject to
Prohibited Transactions Tax, otherwise subject the Trust Estate to tax, or cause
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  Trustee or any
      Servicer for Periodic  Advances made by the Master Servicer or the Trustee
      pursuant to Section  3.03(a) or any  Servicer  pursuant  to any  Servicing
      Agreement  with  respect to  previous  Distribution  Dates,  such right to
      reimbursement  pursuant  to this  subclause  (i) being  limited to amounts
      received on or in respect of particular  Mortgage  Loans  (including,  for
      this  purpose,  Liquidation  Proceeds,  REO Proceeds and proceeds from the
      purchase,  sale,  repurchase or substitution of Mortgage Loans pursuant to
      Sections  2.02,  2.03,  3.08 or 9.01)  respecting  which any such Periodic
      Advance was made;

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

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

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

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

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

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

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

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

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

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

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

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

SECTION 3.03. ADVANCES BY MASTER SERVICER AND TRUSTEE.

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

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

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

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

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

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

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

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

SECTION 3.05. REPORTS TO THE TRUSTEE; ANNUAL COMPLIANCE STATEMENTS.

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

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

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

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

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

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

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

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

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

SECTION 3.08. OVERSIGHT OF SERVICING.

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

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

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

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

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

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

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

            MLCC Additional  Collateral and NOVUS  Additional  Collateral may be
liquidated and the proceeds applied to cover any shortfalls upon the liquidation
of a Mortgaged Property;  provided,  however,  that the Trust Estate in no event
shall acquire  ownership of either the MLCC  Additional  Collateral or the NOVUS
Additional  Collateral  unless the  Trustee  shall have  received  an Opinion of
Counsel that such ownership  shall not cause the Trust Estate to fail to qualify
as a REMIC or subject the REMIC to any tax.

            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)  (without,  in
the case of the Class A-2  Certificates,  giving effect to the guaranty provided
by  Ambac)  as a result  of such  agreement.  Any  such  agreement  may  contain
provisions  whereby such holder may  instruct the Master  Servicer to instruct a
Servicer  to the  extent  provided  in the  applicable  Servicing  Agreement  to
commence or delay  foreclosure  proceedings with respect to delinquent  Mortgage
Loans and will  contain  provisions  for the  deposit of cash by the holder that
would  be  available  for  distribution  to  Certificateholders  if  Liquidation
Proceeds are less than they  otherwise  may have been had the Servicer  acted in
accordance with its normal procedures.

SECTION 3.09. TERMINATION AND SUBSTITUTION OF SERVICING AGREEMENTS.

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

SECTION 3.10. APPLICATION OF NET LIQUIDATION PROCEEDS.

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

SECTION 3.11. 1934 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  and to Ambac,
      pro rata,  based upon their  respective  Interest  Accrual Amounts and the
      Premium Payment, respectively, in an aggregate amount up to the sum of the
      Class A Interest  Accrual  Amount and the Premium  Payment with respect to
      such Distribution Date;

                  second,  to the Classes of Class A Certificates  and to Ambac,
      pro rata, based upon their  respective Class A Unpaid Interest  Shortfalls
      and Premium Unpaid Shortfall,  respectively,  in an aggregate amount up to
      the sum of the  Aggregate  Class A Unpaid  Interest  Shortfall and Premium
      Unpaid 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,
Ambac will not be entitled to its Premium Payments and Premium Unpaid Shortfalls
after the Principal  Balance of the Class A-2  Certificates  has been reduced to
zero.

            Furthermore,  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 Class A-PO  Certificates)  in accordance  with the
following priorities:


      first, to the Class A-R Certificate, until  the  Principal Balance thereof
has been reduced to zero;

      second,  on each  Distribution  Date on or after the Distribution  Date in
December 2002,  concurrently,  to the Class A-2 and Class A-3 Certificates,  pro
rata, based on their respective Original Principal  Balances,  up to $44,000 for
such Distribution  Date, until the Principal Balance of each such Class has been
reduced to zero;

      third, to the Class A-4 Certificates, up to the lesser of (i) the Priority
Amount for such Distribution Date and (ii) 94.0% of the Class A Non-PO Principal
Distribution Amount;

      fourth, to the Class A-1 Certificates, until the Principal Balance thereof
has been reduced to zero;

      fifth,  concurrently,  to the Class A-2 and  Class A-3  Certificates,  pro
rata, based on their respective Original Principal Balances, until the Principal
Balance of each such Class has been reduced to zero; and

      sixth, to the Class A-4 Certificates,  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) (o) 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   (other  than  the  Class  A-2   Certificates)  and  the  Class  B
Distribution  Amount with respect to each such Class of Class B Certificates and
in the case of the Class A-2 Certificates, as provided in Section 4.07.

            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 Trustee.  The Trustee will then send a notice to each
Certificateholder  of  such  Class  with a copy  to the  Certificate  Registrar,
specifying that the final  distribution  with respect to such Class will be made
on such  Distribution  Date only upon the  presentation  and  surrender  of such
Certificateholder's  Certificates at the office or agency of the Trustee therein
specified;  provided,  however,  that the  failure to give such  notice will not
entitle a  Certificateholder  to any interest  beyond the interest  payable with
respect to such Distribution Date in accordance with Section 4.01(a).

            (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  partnership,
Treasury regulations are adopted that provide otherwise) created or organized in
or under the laws of the United  States,  any state  thereof or the  District of
Columbia,  including  an entity  treated as a  corporation  or  partnership  for
federal income tax purposes,  an estate whose income is subject to United States
federal  income tax  regardless of its source,  or a trust if a court within the
United States is able to exercise primary supervision over the administration of
such trust,  and one or more such U.S. Persons have the authority to control all
substantial  decisions of such trust (or, to the extent  provided in  applicable
Treasury  regulations,  certain trusts in existence on August 20, 1996 which are
eligible to elect to be treated as U.S. Persons).

SECTION 4.02. ALLOCATION OF REALIZED LOSSES.

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

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

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

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

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

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

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

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

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

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

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

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

            (e) The interest  portion of Excess Special  Hazard  Losses,  Excess
Fraud Losses and Excess  Bankruptcy  Losses  shall be allocated  between (i) the
Class A Certificates  and the Premium Payment and (ii) the Class B Certificates,
pro rata based on the Class A Interest  Accrual  Amount and the Premium  Payment
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 and the Premium Payment shall be allocated
among the  outstanding  Classes of Class A Certificates  and the Premium Payment
based on their Class A Interest  Percentages and the Premium Percentage,  as the
case  may be.  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 and the
Premium  Payment  based on their  Class A Interest  Percentages  and the Premium
Percentage, as the case may be.

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

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

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

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

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

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

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

SECTION 4.04. STATEMENTS TO CERTIFICATEHOLDERS;
              REPORTS TO THE TRUSTEE, AMBAC 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,  the Seller and Ambac a
statement setting forth:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                  (xxiv)  in the case of the  Class  A-2  Certificates,  (a) the
      Class A-2 Distribution Deficiency, if any, for such Distribution Date, (b)
      amounts,  if any in respect of the Class A-2 Distribution  Deficiency paid
      under  the  Policy  and (c) the  amounts  attributable  to the  Class  A-2
      Certificates;

                  (xxv) in the case of the Class A-2  Certificates,  the  amount
      remaining  in the  Reserve  Fund after  taking  into  account  the Reserve
      Withdrawal for such Distribution Date; and

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

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

            In the case of  information  furnished  with  respect  to a Class of
Class A Certificates  pursuant to clauses (i) and (ii) above and with respect to
a Class of Class B  Certificates  pursuant to clauses (iii) and (iv) above,  the
amounts shall be expressed as a dollar amount per Class A or Class B Certificate
(other  than the Class A-R  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
Trustee,  any Paying Agent and the Seller (the  information in such statement to
be made  available  to  Certificateholders  by the  Master  Servicer  on written
request)  setting  forth the Class A  Distribution  Amount with  respect to each
Class of Class A Certificates  and the Class B Distribution  Amount with respect
to each Class of Class B Certificates.  Upon receipt of any such statement,  the
Trustee  shall  promptly  forward  a  copy  of  such  statement  to  Ambac.  The
determination  by the Master  Servicer of such amounts shall,  in the absence of
obvious error, be presumptively  deemed to be correct for all purposes hereunder
and the Trustee and the Paying Agent shall be protected in relying upon the same
without any independent check or verification.

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

SECTION 4.05. REPORTS TO MORTGAGORS AND THE INTERNAL REVENUE SERVICE.

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

SECTION 4.06. RESERVE FUNDS.

            (a) A separate Reserve Fund shall be established on the Closing Date
for the Class A-2  Certificates.  The Reserve  Fund shall be  maintained  by the
Trustee in  accordance  with this Section  4.06. At the time the Reserve Fund is
established,  the Seller shall cause to be  deposited  into the Reserve Fund the
amount of $15,975.00.

            With  respect to each  Distribution  Date,  the  applicable  Reserve
Withdrawal  shall be  withdrawn by the Trustee from the amount on deposit in the
Reserve  Fund in  accordance  with this  Section  4.06 and  distributed  on such
Distribution Date to the Holders of the Class A-2 Certificates,  pro rata, based
on Percentage Interest.

            Notwithstanding anything herein to the contrary, on the Distribution
Date on which the Class A Principal  Balance of the Class A-2  Certificates  has
been  reduced to zero,  any funds then on deposit in the  Reserve  Fund shall be
distributed to Lehman Brothers at the address provided by it to the Trustee.

            (b) The  Reserve  Fund will be an "outside  reserve  fund" under the
REMIC  Provisions that is beneficially  owned for federal income tax purposes by
Lehman  Brothers,  which shall report all income,  gain,  deduction or loss with
respect thereto, and will not be an asset of the REMIC.

SECTION 4.07. DISTRIBUTIONS IN REDUCTION OF THE CLASS A-2 CERTIFICATES.

            Distributions in reduction of the Principal Balance of the Class A-2
Certificates will be made in integral  multiples of $1,000 at the request of the
appropriate representatives of Deceased Holders of such Class and at the request
of Living  Holders of such Class or by  mandatory  distributions  by random lot,
pursuant to clauses (a) and (d) below, or on a pro rata basis pursuant to clause
(f) below.

            (a) On each Distribution Date on which distributions in reduction of
the Principal Balance of the Class A-2 Certificates are made, such distributions
will be made with respect to such Class in the following priority:

                  (i) any request by the personal  representatives of a Deceased
      Holder or by a surviving  tenant by the  entirety,  by a  surviving  joint
      tenant or by a surviving tenant in common,  but not exceeding an aggregate
      principal balance for such Class of $100,000 per request; and

                  (ii) any  request by a Living  Holder,  but not  exceeding  an
      aggregate principal balance for such Class of $10,000 per request.

            Thereafter,  distributions will be made, with respect to such Class,
as provided in clauses (i) and (ii) above up to a second  $100,000  and $10,000,
respectively.  This sequence of priorities will be repeated for each request for
principal  distributions  for such  Class made by the  Beneficial  Owners of the
Class A-2 Certificates until all such requests have been honored.

            For each such sequence of priorities  described above,  requests for
distributions  in reduction of the principal  balance of Class A-2  Certificates
presented on behalf of Deceased  Holders in  accordance  with the  provisions of
clause  (i) above will be  accepted  in order of their  receipt by the  Clearing
Agency and requests for  distributions in reduction of the principal  balance of
Class A-2  Certificates  presented  by Living  Holders  in  accordance  with the
provisions  of clause (ii) above will be accepted in the order of their  receipt
by the Clearing  Agency after all requests with respect to such Class  presented
in accordance with clause (i) have been honored.  All requests for distributions
in  reduction of the  principal  balance of the Class A-2  Certificates  will be
accepted in accordance  with the  provisions set forth in Section  4.07(c).  All
requests for  distributions  in reduction of the principal  balance of Class A-2
Certificates  with  respect to any  Distribution  Date must be  received  by the
Clearing Agency and forwarded to, and received by, the Trustee no later than the
close of business on the related Record Date.  Requests for distributions  which
are  received by the  Clearing  Agency and  forwarded  to, and  received by, the
Trustee  after  the  related  Record  Date and  requests,  in either  case,  for
distributions  not  accepted  with  respect to any  Distribution  Date,  will be
treated as requests for  distributions in reduction of the principal  balance of
Class  A-2  Certificates  on the next  succeeding  Distribution  Date,  and each
succeeding Distribution Date thereafter,  until each such request is accepted or
is  withdrawn  as  provided  in Section  4.07(c).  Such  requests  as are not so
withdrawn shall retain their order of priority  without the need for any further
action on the part of the appropriate  Beneficial Owner of the related Class A-2
Certificate,  all in accordance  with the procedures of the Clearing  Agency and
the  Trustee.  Upon the  transfer  of  beneficial  ownership  of any  Class  A-2
Certificate,  any distribution request previously submitted with respect to such
Certificate  will be deemed to have been  withdrawn only upon the receipt by the
Trustee  of  notification  of such  withdrawal  in the  manner  required  by the
Clearing Agency under its APUT System.

            Distributions in reduction of the principal balance of the Class A-2
Certificates will be applied, in the aggregate with respect to such Class, in an
amount equal to the Class A Non-PO  Principal  Distribution  Amount allocable to
such Class  pursuant to Section  4.01(b) plus any amounts  distributable  to the
Class A-2  Certificates  as a payment  under the Policy of a Class A-2 Principal
Loss Amount of the type  described in clause (i) of the  respective  definitions
thereof,  minus amounts to repay any funds  withdrawn from the Rounding  Account
for such Class for the prior  Distribution  Date, plus any amounts available for
distribution from the Rounding Account for such Class established as provided in
Section  4.07(e),  provided that the aggregate  distribution in reduction of the
Principal  Balance of such Class on any Distribution Date is made in an integral
multiple of $1,000.

            To the  extent  that the  portion  of the  Class A Non-PO  Principal
Distribution  Amount  allocable to  distributions  in reduction of the Principal
Balance of the Class A-2 Certificates on any Distribution  Date plus any amounts
distributable  to the Class A-2  Certificates as a payment under the Policy of a
Class A-2  Principal  Loss  Amount of the type  described  in clause  (i) of the
respective  definitions  hereof (minus amounts to repay any funds withdrawn from
the Rounding Account for such Class on the prior  Distribution Date and plus any
amounts  required to be  distributed  from the  Rounding  Account for such Class
pursuant to Section  4.07(e)) exceeds the aggregate  principal  balance of Class
A-2  Certificates  with  respect to which  distribution  requests,  as set forth
above, have been received distributions in reduction of the Principal Balance of
the Class A-2 Certificates  will be made by mandatory  distribution  pursuant to
Section 4.07(d).

            (b) A Class A-2 Certificate shall be deemed to be held by a Deceased
Holder for purposes of this Section  4.07 if the death of the  Beneficial  Owner
thereof is deemed to have occurred. Class A-2 Certificates beneficially owned by
tenants by the  entirety,  joint tenants or tenants in common will be considered
to be  beneficially  owned  by a single  owner.  The  death  of a tenant  by the
entirety, joint tenant or tenant in common will be deemed to be the death of the
Beneficial  Owner, and the Class A-2 Certificates so beneficially  owned will be
eligible  for  priority  with  respect  to  distributions  in  reduction  of the
principal  balance of such Class  thereof,  subject  to the  limitations  stated
above.  Class A-2 Certificates  beneficially owned by a trust will be considered
to be beneficially  owned by each beneficiary of the trust to the extent of such
beneficiary's  beneficial  interest  therein,  but in no  event  will a  trust's
beneficiaries  collectively  be  deemed to be  Beneficial  Owners of a number of
Individual  Class A-2  Certificates  greater than the number of Individual Class
A-2 Certificates of which such trust is the owner. The death of a beneficiary of
a trust  will be deemed to be the death of a  Beneficial  Owner of the Class A-2
Certificates owned by the trust to the extent of such  beneficiary's  beneficial
interest  in such  trust.  The  death of an  individual  who was a tenant by the
entirety, joint tenant or tenant in common in a tenancy which is the beneficiary
of a trust will be deemed to be the death of the beneficiary of such trust.  The
death of a person who, during his or her lifetime, was entitled to substantially
all of the beneficial  ownership  interests in Individual Class A-2 Certificates
will be  deemed  to be the  death  of the  Beneficial  Owner of such  Class  A-2
Certificates  regardless of the  registration  of ownership,  if such beneficial
interest can be established to the satisfaction of the Trustee.  Such beneficial
interest  will be deemed to exist in  typical  cases of street  name or  nominee
ownership,  ownership by a Trustee,  ownership under the Uniform Gifts to Minors
Act and  community  property or other  joint  ownership  arrangements  between a
husband and wife. Beneficial interests shall include the power to sell, transfer
or  otherwise  dispose of a Class A-2  Certificate  and the right to receive the
proceeds  therefrom,  as well as interest and  distributions in reduction of the
principal  balance of the Class A-2  Certificates  payable with respect thereto.
The  Trustee  shall  not be  under  any  duty  to  determine  independently  the
occurrence of the death of any deceased  Beneficial  Owner. The Trustee may rely
entirely  upon  documentation  delivered  to it pursuant  to Section  4.07(c) in
establishing  the  eligibility of any  Beneficial  Owner to receive the priority
accorded Deceased Holders in Section 4.07(a).

            (c) Requests for distributions in reduction of the principal balance
of Class A-2 Certificates  must be made by delivering a written request therefor
to the Clearing Agency Participant or Clearing Agency Indirect  Participant that
maintains the account  evidencing such Beneficial  Owner's interest in Class A-2
Certificates.  In  the  case  of a  request  on  behalf  of a  Deceased  Holder,
appropriate  evidence of death and any tax waivers are  required to be forwarded
to the Trustee under separate cover. The Clearing Agency  Participant  should in
turn make the  request of the  Clearing  Agency  (or,  in the case of a Clearing
Agency Indirect  Participant,  such Clearing Agency  Indirect  Participant  must
notify the related Clearing Agency  Participant of such request,  which Clearing
Agency Participant should make the request of the Clearing Agency) in the manner
required under the rules and  regulations  of the Clearing  Agency's APUT System
and provided to the Clearing Agency  Participant.  Upon receipt of such request,
the  Clearing  Agency will date and time stamp such  request  and  forward  such
request to the Trustee.  The Clearing Agency may establish such procedures as it
deems fair and  equitable to establish the order of receipt of requests for such
distributions  received by it on the same day.  Neither the Master  Servicer nor
the  Trustee  shall  be  liable  for any  delay  in  delivery  of  requests  for
distributions or withdrawals of such requests by the Clearing Agency, a Clearing
Agency Participant or any Clearing Agency Indirect Participant.

            The  Trustee  shall  maintain  a  list  of  those  Clearing   Agency
Participants  representing  the  appropriate  Beneficial  Owners  of  Class  A-2
Certificates that have submitted  requests for distributions in reduction of the
principal  balance of  Certificates  of such Class,  together  with the order of
receipt  and the  amounts  of such  requests.  The  Clearing  Agency  will honor
requests  for  distributions  in the  order of  their  receipt  (subject  to the
priorities  described in Section  4.07(a)  above).  The Trustee shall notify the
Clearing  Agency and the appropriate  Clearing  Agency  Participants as to which
requests should be honored on each Distribution Date.  Requests shall be honored
by the Clearing  Agency in accordance  with the  procedures,  and subject to the
priorities and limitations, described in this Section 4.07. The exact procedures
to be  followed  by  the  Trustee  and  the  Clearing  Agency  for  purposes  of
determining such priorities and limitations will be those  established from time
to time by the Trustee or the Clearing Agency, as the case may be. The decisions
of the Trustee and the Clearing Agency concerning such matters will be final and
binding on all affected persons.

            Individual  Class A-2  Certificates  which have been  accepted for a
distribution shall be due and payable on the applicable  Distribution Date. Such
Certificates  shall  cease to bear  interest  after  the  last day of the  month
preceding the month in which such Distribution Date occurs, and  notwithstanding
anything to the contrary herein, no amounts shall be due from Ambac or otherwise
with respect to interest on such Certificates after such last day of the month.

            Any Beneficial Owner of a Class A-2 Certificate  which has requested
a distribution  may withdraw its request by so notifying in writing the Clearing
Agency  Participant or Clearing Agency Indirect  Participant that maintains such
Beneficial  Owner's  account.  In the event that such account is maintained by a
Clearing Agency Indirect Participant,  such Clearing Agency Indirect Participant
must notify the related Clearing Agency  Participant  which in turn must forward
the withdrawal of such request,  on a form required by the Clearing  Agency,  to
the Trustee.  If such notice of withdrawal of a request for distribution has not
been  received by the Clearing  Agency and forwarded to the Trustee on or before
the Record Date for the next Distribution  Date, the previously made request for
distribution  will be irrevocable with respect to the making of distributions in
reduction  of  the  Principal   Balance  of  Class  A-2   Certificates  on  such
Distribution Date.

            In the event any  requests  for  distributions  in  reduction of the
principal  balance of Class A-2  Certificates  are  rejected  by the Trustee for
failure to comply with the  requirements of this Section 4.07, the Trustee shall
return such request to the appropriate  Clearing Agency  Participant with a copy
to the Clearing Agency with an explanation as to the reason for such rejection.

            (d) To the extent,  if any, that  distributions  in reduction of the
Principal  Balance of Class A-2  Certificates on a Distribution  Date exceed the
outstanding  principal  balances of  Certificates  of such Class with respect to
which  distribution  requests have been received by the related  Record Date, as
provided in Section 4.07(a) above,  distributions  in reduction of the Principal
Balance of the Class A-2 Certificates will be made by mandatory distributions in
reduction  thereof.  Such  mandatory   distributions  on  Individual  Class  A-2
Certificates  will be made by random lot in accordance with the  then-applicable
random lot procedures of the Clearing Agency,  the Clearing Agency  Participants
and the  Clearing  Agency  Indirect  Participants  representing  the  Beneficial
Owners;  provided  however,  that, if after the distribution in reduction of the
Principal  Balance  of  the  Class  A-2  Certificates  on  the  next  succeeding
Distribution Date on which mandatory distributions are to be made, the principal
balance of Class A-2  Certificates  would not be reduced to zero, the Individual
Class A-2  Certificates  to which such  distributions  will be applied  shall be
selected by the Clearing Agency from those Class A-2  Certificates not otherwise
receiving   distributions  in  reduction  of  the  principal   balance  on  such
Distribution Date. The Trustee shall notify the Clearing Agency of the aggregate
amount of the mandatory  distribution  in reduction of the Principal  Balance of
the  Class  A-2  Certificates  to be made on the  next  Distribution  Date.  The
Clearing  Agency shall then  allocate such  aggregate  amount among its Clearing
Agency Participants on a random lot basis. Each Clearing Agency Participant and,
in turn,  each  Clearing  Agency  Indirect  Participant  will  then  select,  in
accordance with its own random lot procedures, Individual Class A-2 Certificates
from among those held in its  accounts  to receive  mandatory  distributions  in
reduction of the principal  balance of the Certificates of such Class, such that
the total amount so selected is equal to the aggregate  amount of such mandatory
distributions  allocated to such  Clearing  Agency  Participant  by the Clearing
Agency and to such Clearing Agency Indirect  Participant by its related Clearing
Agency  Participant,  as the  case  may be.  Clearing  Agency  Participants  and
Clearing Agency Indirect Participants which hold Class A-2 Certificates selected
for mandatory  distributions in reduction of the principal  balance are required
to provide notice of such  mandatory  distributions  to the affected  Beneficial
Owners.  The  Master  Servicer  agrees to notify  the  Trustee  of the amount of
distributions in reduction of the principal balance of Class A-2 Certificates to
be made on each  Distribution  Date in a timely manner such that the Trustee may
fulfill  its  obligations  pursuant to the Letter of  Representations  dated the
Business  Day  immediately  preceding  the Closing  Date among the  Seller,  the
Trustee and the Clearing Agency.

            (e) On the Closing Date,  the Rounding  Account shall be established
with the Trustee and the Seller shall cause to be initially  deposited  with the
Trustee a $999.99 deposit for the Rounding Account. On each Distribution Date on
which a distribution is made in reduction of the principal  balance of the Class
A-2 Certificates, funds on deposit in the Rounding Account shall be available to
be applied  to round  upward to an  integral  multiple  of $1,000 the  aggregate
distribution  in  reduction  of the Class A Principal  Balance to be made on the
Class  A-2  Certificates.  Rounding  of  such  distribution  on  the  Class  A-2
Certificates  shall be  accomplished,  on the first such  Distribution  Date, by
withdrawing  from the Rounding  Account the amount of funds,  if any,  needed to
round the amount otherwise  available for such  distribution in reduction of the
principal  balance  of the Class A-2  Certificates  upward to the next  integral
multiple of $1,000. On each succeeding  Distribution Date on which distributions
in reduction of the principal  balance of the Class A-2  Certificates  are to be
made,  the  aggregate  amount of such  distributions  allocable to the Class A-2
Certificates  shall be  applied  first to repay  any  funds  withdrawn  from the
Rounding Account for such Class on the prior  Distribution  Date for which funds
were withdrawn from such account for such Class,  and then the remainder of such
allocable  amount,  if any,  shall be  similarly  rounded  upward and applied as
distributions   in  reduction  of  the  principal   balance  of  the  Class  A-2
Certificates; this process shall continue on succeeding Distribution Dates until
the Class A Principal  Balance of the Class A-2 Certificates has been reduced to
zero. The funds in the Rounding Account shall be held in a non-interest  bearing
account and shall not be reinvested.

            Notwithstanding anything herein to the contrary, on the Distribution
Date on which  distributions in reduction of the Principal  Balance of the Class
A-2  Certificates  will reduce the Principal  Balance  thereof to zero or in the
event that  distributions in reduction of the Principal Balance of the Class A-2
Certificates  are made in accordance  with the  provisions  set forth in Section
4.07(f),  an amount equal to the difference between $1,000 and the sum then held
in the Rounding Account shall be paid from the Pool  Distribution  Amount to the
Rounding  Account.  Any funds then on deposit in such Rounding  Account shall be
distributed to the Holder of the Class A-R Certificate.

            (f) Notwithstanding  any provisions herein to the contrary,  on each
Distribution Date on and after Ambac's failure to make a payment with respect to
a Class A-2 Distribution Deficiency, distributions in reduction of the Principal
Balance of the Class A-2 Certificates (including amounts paid in respect of such
losses  under the Policy)  will be made on a pro rata basis among the Holders of
the Class A-2 Certificates and will not be made in integral  multiples of $1,000
or pursuant to requested distributions or mandatory distributions by random lot.

            (g) In the  event  that  the pro  rata  distributions  described  in
section  4.07(f) cannot be made through the  facilities of the Clearing  Agency,
the Class A-2 Certificates will be withdrawn from the facilities of the Clearing
Agency and  Definitive  Certificates  will be issued to replace  such  withdrawn
Book-Entry   Certificates  pursuant  to  Section  5.07.  An  amendment  to  this
Agreement,  which may be approved without the consent of any Certificateholders,
shall   establish   procedures   relating  to  the  manner  in  which  pro  rata
distributions   in  reduction  of  the  principal   balance  of  the  Class  A-2
Certificates are to be made;  provided that such procedures shall be consistent,
to the extent  practicable and customary for  certificates  similar to the Class
A-2 Certificates, with the provisions of this Section 4.07.

SECTION 4.08. POLICY MATTERS.

            (a) If, on the second Business Day before any Distribution Date, the
Trustee  determines that there will be a Class A-2  Distribution  Deficiency for
such Distribution Date, the Trustee shall determine the amount of such Class A-2
Distribution  Deficiency and shall give notice to Ambac by telephone or telecopy
of the  amount  of  such  deficiency  confirmed  in  writing  by the  Notice  of
Nonpayment by 12:00 noon, New York City time on such second Business Day.

            (b) At the time of the execution and delivery of this Agreement, the
Trustee shall establish a separate  special purpose trust account in the name of
the Trustee for the benefit of Holders of the Class A-2 Certificates referred to
herein as the  "Policy  Payments  Account"  over  which the  Trustee  shall have
exclusive  control and sole right of  withdrawal.  The Trustee shall deposit any
amounts paid under the Policy into the Policy  Payments  Account and  distribute
such  amounts  only  for  purposes  of  payment  to  Holders  of the  Class  A-2
Certificates of the Class A-2 Distribution Deficiency for which a claim was made
and  such  amounts  may  not be  applied  to  satisfy  any  costs,  expenses  or
liabilities  of the Trustee or the Trust  Estate.  Amounts paid under the Policy
shall be  disbursed by the Trustee to Holders of the Class A-2  Certificates  in
the same manner as  distributions  in reduction of the principal  balance of and
interest on the  Certificates of such Class are made under Section  4.01(e).  It
shall  not be  necessary  for  such  payments  of  the  Class  A-2  Distribution
Deficiency  to be made by checks or wire  transfers  separate  from the check or
wire transfer used to pay distributions in reduction of the principal balance of
and  interest on the Class A-2  Certificates  with funds  available to make such
distributions.  However,  the amount of any  distribution  to be paid from funds
transferred  from the Policy Payments  Account shall be noted as provided in (c)
below  and in the  statement  to be  furnished  to  Holders  of  the  Class  A-2
Certificates  and Ambac  pursuant  to  Section  4.04.  Funds  held in the Policy
Payments Account shall not be invested by the Trustee.

            On any Distribution Date with respect to which a claim has been made
under the Policy, the amount of any funds received by the Trustee as a result of
the claim under the Policy to the extent necessary to make  distributions on the
Class A-2 Certificates  equal to the Class A-2  Distribution  Deficiency on such
Distribution  Date shall be  withdrawn  from the  Policy  Payments  Account  and
applied  by the  Trustee to the  payment  in full of the Class A-2  Distribution
Deficiency.  Any funds deposited into the Policy Payments  Account in respect of
the Class A-2 Certificates  that are remaining therein on the first Business Day
following a Distribution  Date after the Class A-2  Distribution  Deficiency has
been  made  to the  Certificateholders  of  such  Class  shall  be  remitted  in
immediately  available funds to Ambac, pursuant to the instructions of Ambac, by
the end of such Business Day.

            (c) The Trustee  shall keep a complete  and  accurate  record of the
Class A-2 Interest  Loss  Amount,  the Class A-2  Principal  Loss Amount and any
Non-Supported  Interest  Shortfall  allocated to the Class A-2 Certificates once
the Reserve Fund has been depleted,  paid from moneys received under the Policy.
Ambac shall have the right to inspect such records at reasonable  times upon one
Business Day's prior notice to the Trustee.

            (d) In the event that the Trustee has  received a certified  copy of
an order of the  appropriate  court that any  distributions  in reduction of the
principal  balance of or interest on a Class A-2 Certificate has been avoided in
whole or in part as a preference  payment under  applicable  bankruptcy law, the
Trustee  shall so notify  Ambac  and shall  comply  with the  provisions  of the
applicable Policy to obtain payment by Ambac of such avoided  distribution,  and
shall,  at the time it provides notice to Ambac,  notify,  by mail to Holders of
the Certificates of such Class that, in the event that any Holder's distribution
is so recovered,  such Holder will be entitled to payment  pursuant to the terms
of the applicable Policy, a copy of which shall be made available by the Trustee
and the Trustee shall furnish to Ambac its records  evidencing the distributions
in  reduction  of  the  principal   balance  of  and  interest   (including  any
Non-Supported  Interest Shortfall described in Section 4.08(c)) on the Class A-2
Certificates,  if any,  which  have been made by the  Trustee  and  subsequently
recovered  from Holders,  and the dates on which such  distributions  were made.
Such payment  under the  applicable  Policy shall be disbursed to the  receiver,
conservator,  debtor-in-possession  or Trustee in bankruptcy  named in the order
and not to the Trustee or any Class A-2 Certificateholder  directly (unless such
Certificateholder has previously paid such amount to the receiver,  conservator,
debtor-in-possession  or Trustee in bankruptcy named in the order, in which case
such  payment  shall  be  disbursed  to the  Trustee  for  distribution  to such
Certificateholder upon proof of such payment reasonably satisfactory to Ambac).

            (e) The Trustee shall promptly notify Ambac of any proceeding or the
institution of any action seeking the avoidance as a preferential transfer under
applicable  bankruptcy,  insolvency,  receivership or similar law (a "Preference
Claim") of any  distribution  made with respect to the Class A-2 Certificates as
to which it has actual knowledge. Each Holder of a Class A-2 Certificate, by its
purchase of such  Certificates  and the Trustee hereby agree that Ambac (so long
as no Ambac  Default  exists)  may at any time  during the  continuation  of any
proceeding  relating to a Preference  Claim direct all matters  relating to such
Preference Claim, including, without limitation, (i) the direction of any appeal
of any  order  relating  to any  Preference  Claim and (ii) the  posting  of any
surety, supersedeas or performance bond pending any such appeal. In addition and
without limitation of the foregoing,  Ambac shall be subrogated to the rights of
the Trustee and each Holder in the conduct of any Preference  Claim,  including,
without limitation, all rights of any party to an adversary proceeding or action
with respect to any court order issued in  connection  with any such  Preference
Claim.

            (f) The  Trustee  acknowledges,  and  each  Holder  of a  Class  A-2
Certificate  by its  acceptance  of such  Certificate  agrees,  that without any
further  action on the part of Ambac,  Ambac shall be  subrogated  to all of the
rights to amounts distributable to such Certificateholders in respect of Class A
Unpaid Interest Shortfalls,  Non-Supported Interest Shortfalls allocated to such
Certificates  and  recoveries,  if any,  with respect to the Class A-2 Principal
Loss  Amounts  with  respect to amounts  paid  under the  Policy.  The Class A-2
Certificateholders  by  acceptance of such  Certificates  assign their rights as
Holders of such  Certificates  to Ambac to the extent of Ambac's  interest  with
respect to amounts paid.

            (g) The Master  Servicer shall designate an Ambac Contact Person who
shall  be  available  to Ambac  to  provide  reasonable  access  to  information
regarding the Mortgage  Loans.  The initial Ambac Contact Person is appointed in
Section 11.27.

            (h) The Trustee shall surrender the Policy to Ambac for cancellation
upon the expiration of the term of the Policy as provided in the Policy.

            (i) The Trustee upon receipt from the Master  Servicer shall send to
Ambac the report prepared  pursuant to Section 3.05 and the statements  prepared
pursuant to Section 4.04.

SECTION 4.09. 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,
Class A-R, Class B-4, Class B-5 and Class B-6 Certificates,  integral  multiples
of $1,000 in excess thereof (except,  if necessary,  for one Certificate of each
Class (other than the 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, as the case may be), 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 Trustee
to or upon the order of the Seller upon receipt by the Trustee or the  Custodian
of the documents  specified in Section 2.01.  The  aggregate  principal  portion
evidenced  by the  Class A and  Class  B  Certificates  shall  be the sum of the
amounts specifically set forth in the respective Certificates.  The Certificates
shall be executed by manual or  facsimile  signature on behalf of the Trustee by
any Responsible  Officer thereof.  Certificates  bearing the manual or facsimile
signatures  of  individuals  who  were at any time the  proper  officers  of the
Trustee shall bind the Trustee  notwithstanding  that such individuals or any of
them have ceased to hold such offices prior to the  authentication  and delivery
of  such  Certificates  or did  not  hold  such  offices  at the  date  of  such
Certificates.  No  Certificate  shall be  entitled  to any  benefit  under  this
Agreement,  or be valid for any  purpose,  unless  manually  countersigned  by a
Responsible  Officer of the Trustee, or unless there appears on such Certificate
a certificate of authentication  executed by the Authenticating  Agent by manual
signature,  and such countersignature or certificate upon a Certificate shall be
conclusive evidence, and the only evidence,  that such Certificate has been duly
authenticated and delivered hereunder.  All Certificates shall be dated the date
of their authentication.

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

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

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

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

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

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

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

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

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

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

SECTION 5.02. REGISTRATION OF CERTIFICATES.

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

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

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

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

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

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

            (c) No transfer of a Class A-PO or Class B Certificate shall be made
(other than the transfer of the Class A-PO  Certificates  to an affiliate of the
Seller on the  Closing  Date)  unless  the  Trustee  and the  Seller  shall have
received (i) a representation  letter from the transferee in the form of Exhibit
J  hereto,  in the case of a Class  A-PO,  Class  B-4,  Class  B-5 or Class  B-6
Certificate,  or in the form of  Exhibit K hereto,  in the case of a Class  B-1,
Class  B-2 or  Class  B-3  Certificate,  to the  effect  that  either  (a)  such
transferee  is not an  employee  benefit  plan or other  retirement  arrangement
subject to Title I of ERISA or Code Section  4975,  or a  governmental  plan, as
defined in Section  3(32) of ERISA,  subject to any federal,  state or local law
("Similar  Law")  which  is  to a  material  extent  similar  to  the  foregoing
provisions  of ERISA or the Code  (collectively,  a "Plan")  and is not a person
acting on behalf of or using the assets of any such Plan,  which  representation
letter shall not be an expense of the Trustee, the Seller or the Master Servicer
or (b) with respect to the Class B Certificates  only, if such  transferee is an
insurance  company,  (A) the  source  of  funds  used to  purchase  the  Class B
Certificates 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 is 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  Trustee  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  Trustee,  the  Seller or the Master
Servicer to any  obligation in addition to those  undertaken in this  Agreement,
which Opinion of Counsel  shall not be an expense of the Trustee,  the Seller or
the  Master  Servicer  and  (B)  such  other  opinions  of  counsel,   officer's
certificates  and agreements as the Seller or the Master Servicer may require in
connection with such transfer, which opinions of counsel, officers' certificates
and agreements shall not be an expense of the Trustee,  the Seller or the Master
Servicer.  The Class A-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 Trustee with an effective
Internal  Revenue  Service  Form  4224 or (iii) is a  Non-U.S.  Person  that has
delivered  to both the  transferor  and the  Trustee an opinion of a  nationally
recognized  tax  counsel  to the  effect  that the  transfer  of the  Class  A-R
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 Trustee 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 Trustee 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  Trustee an
affidavit, substantially in the form attached as Exhibit H hereto, signed by the
transferee,  to the  effect  that  the  transferee  is not  such a  disqualified
organization,  an agent  (including a broker,  nominee,  or  middleman)  for any
entity as to which the  transferee  has not  received  a  substantially  similar
affidavit,  an ERISA Prohibited Holder or a Non-permitted  Foreign Holder, which
affidavit  shall contain the consent of the transferee to any such amendments of
this  Agreement  as  may  be  required  to  further   effectuate  the  foregoing
restrictions   on  transfer  of  the  Class  A-R   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 such 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 Trustee or
the Authenticating  Agent, or the Trustee or the  Authenticating  Agent receives
evidence  to  its  satisfaction  of  the  destruction,  loss  or  theft  of  any
Certificate,  and (ii) there is delivered  to the Trustee or the  Authenticating
Agent such security or indemnity as may be required by them to hold each of them
harmless,  then,  in the absence of notice to the Trustee or the  Authenticating
Agent that such  Certificate  has been  acquired by a bona fide  purchaser,  the
Trustee shall execute and  authenticate  (or cause the  Authenticating  Agent to
authenticate)  and deliver,  in exchange  for or in lieu of any such  mutilated,
destroyed,  lost or stolen  Certificate,  a new  Certificate  of like  tenor and
principal  portion  or  Percentage  Interest  and of the  same  Class.  Upon the
issuance  of  any  new  Certificate  under  this  Section,  the  Trustee  or the
Certificate  Registrar may require the payment of a sum  sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto and any
other  expense   (including  the  fees  and  expenses  of  the  Trustee  or  the
Authenticating Agent) in connection therewith.  Any duplicate Certificate issued
pursuant to this Section shall constitute complete and indefeasible  evidence of
ownership in the Trust Estate, as if originally issued, whether or not the lost,
stolen, or destroyed Certificate shall be found at any time.

SECTION 5.04. PERSONS DEEMED OWNERS.

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

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

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

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

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

SECTION 5.06. MAINTENANCE OF OFFICE OR AGENCY.

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

SECTION 5.07. DEFINITIVE CERTIFICATES.

            If (i)(A) the Master  Servicer  advises the Trustee in writing  that
the  Clearing  Agency is no longer  willing or able  properly to  discharge  its
responsibilities as depository with respect to the Book-Entry Certificates,  and
(B) the Master  Servicer  is unable to locate a  qualified  successor,  (ii) the
Master Servicer, at its option, advises the Trustee in writing that it elects to
terminate the  book-entry  system through the Clearing  Agency,  (iii) after the
occurrence of dismissal or resignation of the Master Servicer, Beneficial Owners
representing  aggregate  Voting  Interests of not less than 51% of the aggregate
Voting Interests of each outstanding Class of Book-Entry Certificates advise the
Trustee through the Clearing Agency and Clearing Agency  Participants in writing
that the  continuation of a book-entry  system through the Clearing Agency is no
longer  in the  best  interests  of the  Beneficial  Owners  or  (iv)  upon  the
occurrence of the events specified in Section 4.07(g),  the Trustee shall notify
the Beneficial  Owners,  through the Clearing  Agency,  of the occurrence of any
such event and of the  availability  of  Definitive  Certificates  to Beneficial
Owners requesting the same. Upon surrender to the Trustee by the Clearing Agency
of the Certificates held of record by its nominee, accompanied by reregistration
instructions and directions to execute and  authenticate  new Certificates  from
the Master  Servicer,  the Trustee  shall  execute and  authenticate  Definitive
Certificates  for delivery at its Corporate  Trust Office.  The Master  Servicer
shall arrange for, and will bear all costs of, the printing and issuance of such
Definitive Certificates. Neither the Seller, the Master Servicer nor the Trustee
shall be liable for any delay in delivery of such  instructions  by the Clearing
Agency and may conclusively  rely on, and shall be protected in relying on, such
instructions.

SECTION 5.08. NOTICES TO CLEARING AGENCY.

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




<PAGE>







                                   ARTICLE VI

                       THE SELLER AND THE MASTER SERVICER

SECTION 6.01. LIABILITY OF THE SELLER AND THE MASTER SERVICER.

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

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

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

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

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

            Neither the Seller nor the Master Servicer nor any subcontractor nor
any of the  partners,  directors,  officers,  employees or agents of any of them
shall be under any liability to the Trust Estate or the  Certificateholders  and
all such Persons shall be held  harmless for any action taken or for  refraining
from the taking of any action in good faith pursuant to this  Agreement,  or for
errors in judgment; provided, however, that this provision shall not protect any
such Person against any breach of warranties or  representations  made herein or
against  any  liability  which would  otherwise  be imposed by reason of willful
misfeasance,  bad faith or gross  negligence in the  performance of duties or by
reason of reckless  disregard of obligations and duties  hereunder.  The Seller,
the Master Servicer,  any  subcontractor,  and any partner,  director,  officer,
employee  or agent of any of them shall be entitled  to  indemnification  by the
Trust Estate and will be held  harmless  against any loss,  liability or expense
incurred in connection  with any legal action  relating to this Agreement or the
Certificates, including without limitation, any legal action against the Trustee
in its capacity as Trustee hereunder,  other than any loss, liability or expense
(including  without  limitation,  expenses  payable by the Master Servicer under
8.06) 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,  a
copy  of  which  shall  be  delivered,  but not  addressed,  to  Ambac.  No such
resignation  shall become  effective  until the Trustee or a successor  servicer
shall have assumed the Master Servicer's  responsibilities,  duties, liabilities
and obligations hereunder.

SECTION 6.05. COMPENSATION TO THE MASTER SERVICER.

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

SECTION 6.06. ASSIGNMENT OR DELEGATION OF DUTIES BY MASTER SERVICER.

            The Master  Servicer shall not assign or transfer any of its rights,
benefits or privileges under this Agreement to any other Person,  or delegate to
or subcontract  with, or authorize or appoint any other Person to perform any of
the duties,  covenants or  obligations  to be  performed by the Master  Servicer
without the prior written consent of the Trustee, and any agreement,  instrument
or act  purporting  to  effect  any such  assignment,  transfer,  delegation  or
appointment shall be void.  Notwithstanding  the foregoing,  the Master Servicer
shall have the right  without  the prior  written  consent of the Trustee (i) to
assign its rights and delegate its duties and obligations  hereunder;  provided,
however,  that (a) the  purchaser or  transferee  accepting  such  assignment or
delegation  is  qualified  to  service  mortgage  loans  for FNMA or  FHLMC,  is
satisfactory  to the Trustee,  in the exercise of its reasonable  judgment,  and
executes  and  delivers  to the  Trustee  an  agreement,  in form and  substance
reasonably  satisfactory  to the Trustee,  which  contains an assumption by such
purchaser or transferee of the due and punctual  performance  and  observance of
each covenant and  condition to be performed or observed by the Master  Servicer
hereunder  from and after the date of such  agreement;  and (b) each  applicable
Rating Agency's rating of any Certificates in effect  immediately  prior to such
assignment,  sale  or  transfer  is  not  reasonably  likely  to  be  qualified,
downgraded or withdrawn as a result of such assignment, sale or transfer and the
Certificates  are not reasonably  likely to be placed on credit review status by
any such  Rating  Agency  (without,  in the case of the Class A-2  Certificates,
giving  effect to the  guaranty  provided by Ambac);  and (ii) to  delegate  to,
subcontract with,  authorize,  or appoint an affiliate of the Master Servicer to
perform and carry out any duties,  covenants or  obligations to be performed and
carried out by the Master  Servicer under this Agreement and hereby agrees so to
delegate,  subcontract,  authorize  or  appoint  to an  affiliate  of the Master
Servicer any duties, covenants or obligations to be performed and carried out by
the Master Servicer to the extent that such duties, covenants or obligations are
to be  performed  in any state or states in which  the  Master  Servicer  is not
authorized to do business as a foreign corporation but in which the affiliate is
so  authorized.  In  no  case,  however,  shall  any  permitted  assignment  and
delegation  relieve the Master  Servicer of any  liability to the Trustee or the
Seller  under  this  Agreement,  incurred  by it  prior  to the  time  that  the
conditions contained in clause (i) above are met.

SECTION 6.07. INDEMNIFICATION OF TRUSTEE AND SELLER BY MASTER SERVICER.

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

SECTION 6.08. MASTER SERVICER COVENANTS CONCERNING YEAR 2000 COMPLIANCE.

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




<PAGE>







                                   ARTICLE VII

                                     DEFAULT

SECTION 7.01. EVENTS OF DEFAULT.

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

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

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

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

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

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

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

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

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

SECTION 7.02. OTHER REMEDIES OF TRUSTEE.

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

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

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

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

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

SECTION 7.05. TRUSTEE TO ACT; APPOINTMENT OF SUCCESSOR.

            When the Master Servicer receives notice of termination  pursuant to
Section 7.01 or the Trustee  receives  the  resignation  of the Master  Servicer
evidenced by an Opinion of Counsel  pursuant to Section 6.04,  the Trustee shall
be the  successor  in all  respects to the Master  Servicer  in its  capacity as
master servicer under this Agreement and the  transactions set forth or provided
for  herein  and shall  have the  rights  and  powers  and be subject to all the
responsibilities,  duties and liabilities  relating thereto placed on the Master
Servicer  by the  terms  and  provisions  hereof  and in its  capacity  as  such
successor  shall have the same  limitation  of liability  herein  granted to the
Master  Servicer.  In the event  that the  Trustee is  succeeding  to the Master
Servicer as the Master Servicer, as compensation  therefor, the Trustee shall be
entitled to receive monthly such portion of the Master  Servicing Fee,  together
with  such  other  servicing  compensation  as is  agreed to at such time by the
Trustee and the Master Servicer, but in no event more than 25% thereof until the
date of final cessation of the Master Servicer's servicing activities hereunder.
Notwithstanding  the above, the Trustee may, if it shall be unwilling to so act,
or shall,  if it is unable to so act or to obtain a qualifying  bid as described
below,  appoint, or petition a court of competent  jurisdiction to appoint,  any
housing and home finance  institution,  bank or mortgage  servicing  institution
having a net worth of not less than $10,000,000 and meeting such other standards
for a successor servicer as are set forth herein, as the successor to the Master
Servicer hereunder in the assumption of all or any part of the responsibilities,
duties or liabilities of the Master Servicer hereunder;  provided, however, that
until  such a  successor  master  servicer  is  appointed  and has  assumed  the
responsibilities,  duties and liabilities of the Master Servicer hereunder,  the
Trustee  shall  continue  as the  successor  to the Master  Servicer as provided
above.  The compensation of any successor master servicer so appointed shall not
exceed the  compensation  specified  in Section  6.05  hereof.  In the event the
Trustee is  required  to solicit  bids as  provided  above,  the  Trustee  shall
solicit,   by  public   announcement,   bids  from   housing  and  home  finance
institutions,   banks  and   mortgage   servicing   institutions   meeting   the
qualifications  set forth in the  preceding  sentence  for the  purchase  of the
master  servicing  functions.  Such public  announcement  shall specify that the
successor  master  servicer  shall be  entitled to the full amount of the Master
Servicing Fee as compensation together with the other servicing  compensation in
the form of late reporting fees or otherwise as provided in Section 6.05. Within
30 days after any such public  announcement,  the Trustee  shall  negotiate  and
effect the sale,  transfer and  assignment  of the master  servicing  rights and
responsibilities  hereunder  to  the  qualified  party  submitting  the  highest
qualifying  bid.  The Trustee  shall deduct all costs and expenses of any public
announcement  and of any sale,  transfer and assignment of the servicing  rights
and  responsibilities  hereunder  from any sum  received by the Trustee from the
successor  to the  Master  Servicer  in  respect  of  such  sale,  transfer  and
assignment.  After such  deductions,  the remainder of such sum shall be paid by
the  Trustee  to the Master  Servicer  at the time of such  sale,  transfer  and
assignment to the Master  Servicer's  successor.  The Trustee and such successor
shall take such action, consistent with this Agreement, as shall be necessary to
effectuate any such succession. The Master Servicer agrees to cooperate with the
Trustee and any successor  servicer in effecting the  termination  of the Master
Servicer's  servicing  responsibilities  and rights hereunder and shall promptly
provide  the Trustee or such  successor  master  servicer,  as  applicable,  all
documents  and  records  reasonably  requested  by it to enable it to assume the
Master  Servicer's  function  hereunder and shall  promptly also transfer to the
Trustee or such successor master servicer, as applicable, all amounts which then
have been or should have been deposited in the Certificate Account by the Master
Servicer or which are thereafter received by the Master Servicer with respect to
the Mortgage Loans.  Neither the Trustee nor any other successor master servicer
shall be deemed to be in default  hereunder by reason of any failure to make, or
any delay in making, any distribution hereunder or any portion thereof caused by
(i) the failure of the Master  Servicer to deliver,  or any delay in delivering,
cash, documents or records to it, or (ii) restrictions imposed by any regulatory
authority having jurisdiction over the Master Servicer. Notwithstanding anything
to the contrary contained in Section 7.01 above or this Section 7.05, the Master
Servicer shall retain all of its rights and responsibilities  hereunder,  and no
successor  (including  the Trustee)  shall succeed  thereto,  if the  assumption
thereof by such successor would cause the rating assigned to any Certificates to
be  revoked,  downgraded  or placed  on credit  review  status  (other  than for
possible upgrading) (without, in the case of the Class A-2 Certificates,  giving
effect to the  guaranty  provided  by Ambac) by  either  Rating  Agency  and the
retention   thereof  by  the  Master  Servicer  would  avert  such   revocation,
downgrading or review.

SECTION 7.06. NOTIFICATION TO CERTIFICATEHOLDERS.

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




<PAGE>







                                  ARTICLE VIII

                             CONCERNING THE TRUSTEE

SECTION 8.01. DUTIES OF TRUSTEE.

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

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

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

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

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

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

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

SECTION 8.02. CERTAIN MATTERS AFFECTING THE TRUSTEE.

            Except as otherwise provided in Section 8.01:

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

                  (ii) The  Trustee may consult  with  counsel,  and any written
      advice  of such  counsel  or any  Opinion  of  Counsel  shall  be full and
      complete  authorization  and  protection in respect of any action taken or
      suffered or omitted by it hereunder in good faith and in  accordance  with
      such advice or Opinion of Counsel;

                  (iii) The  Trustee  shall  not be  personally  liable  for any
      action  taken,  suffered or omitted by it in good faith and believed by it
      to be  authorized or within the  discretion or rights or powers  conferred
      upon it by this Agreement;

                  (iv)  Subject  to  Section  7.04,  the  Trustee  shall  not be
      accountable, shall have no liability and makes no representation as to any
      acts or omissions  hereunder of the Master Servicer until such time as the
      Trustee may be required to act as Master Servicer pursuant to Section 7.05
      and  thereupon  only for the acts or omissions of the Trustee as successor
      Master Servicer; and

                  (v) The  Trustee  may  execute  any of the  trusts  or  powers
      hereunder or perform any duties hereunder either directly or by or through
      agents or attorneys.

SECTION 8.03. TRUSTEE NOT REQUIRED TO MAKE INVESTIGATION.

            Prior to the  occurrence of an Event of Default  hereunder and after
the curing of all Events of Default which may have  occurred,  the Trustee shall
not be bound to make any  investigation  into the facts or matters stated in any
resolution,   certificate,   statement,  instrument,  opinion,  report,  notice,
request, consent, order, appraisal, bond, Mortgage, Mortgage Note or other paper
or document (provided the same appears regular on its face), unless requested in
writing to do so by holders of Certificates evidencing in the aggregate not less
than 51% of the  Voting  Interest  represented  by all  Certificates;  provided,
however,  that if the  payment  within a  reasonable  time to the Trustee of the
costs, expenses or liabilities likely to be incurred by it in the making of such
investigation is, in the opinion of the Trustee,  not reasonably  assured to the
Trustee  by the  security  afforded  to it by the terms of this  Agreement,  the
Trustee may require reasonable  indemnity against such expense or liability as a
condition to so proceeding.  The reasonable  expense of every such investigation
shall be paid by the Master Servicer or, if paid by the Trustee, shall be repaid
by the Master Servicer upon demand.

SECTION 8.04. TRUSTEE NOT LIABLE FOR CERTIFICATES OR MORTGAGE LOANS.

            The recitals  contained herein and in the  Certificates  (other than
the certificate of  authentication  on the  Certificates)  shall be taken as the
statements of the Seller,  and the Trustee assumes no  responsibility  as to the
correctness of the same. The Trustee makes no representation for the correctness
of  the  same.  The  Trustee  makes  no  representation  as to the  validity  or
sufficiency of this Agreement or of the  Certificates or of any Mortgage Loan or
related document.  Subject to Section 2.04, the Trustee shall not be accountable
for the use or  application by the Seller of any of the  Certificates  or of the
proceeds of such  Certificates,  or for the use or application of any funds paid
to the Master  Servicer  in respect of the  Mortgage  Loans  deposited  into the
Certificate  Account by the Master Servicer or, in its capacity as trustee,  for
investment of any such amounts.

SECTION 8.05. TRUSTEE MAY OWN CERTIFICATES.

            The Trustee and any agent  thereof,  in its  individual or any other
capacity,  may become the owner or pledgee of Certificates  with the same rights
it would  have if it were not  Trustee or such  agent and may  transact  banking
and/or trust business with the Seller, the Master Servicer or their Affiliates.

SECTION 8.06. THE MASTER SERVICER TO PAY FEES AND EXPENSES.

            The Master Servicer  covenants and agrees to pay to the Trustee from
time to  time,  and  the  Trustee  shall  be  entitled  to  receive,  reasonable
compensation  (which  shall not be limited by any  provision of law in regard to
the compensation of a trustee of an express trust) for all services  rendered by
it in the  execution  of the  trusts  hereby  created  and in the  exercise  and
performance  of any of the powers and duties  hereunder  of the  Trustee and the
Master  Servicer  will pay or  reimburse  the  Trustee  upon its request for all
reasonable  expenses,  disbursements  and  advances  incurred  or  made by it in
accordance  with  any  of  the  provisions  of  this  Agreement  (including  the
reasonable compensation and the expenses and disbursements of its counsel and of
all persons not regularly in its employ) except any such expense,  disbursement,
or advance as may arise from its negligence or bad faith.

SECTION 8.07. ELIGIBILITY REQUIREMENTS.

            The Trustee  hereunder  shall at all times (i) be a  corporation  or
association  having its principal  office in a state and city  acceptable to the
Seller,  organized and doing business under the laws of such state or the United
States of  America,  authorized  under  such laws to  exercise  corporate  trust
powers, having a combined capital and surplus of at least $50,000,000,  or shall
be a member of a bank holding system, the aggregate combined capital and surplus
of which is at least $50,000,000, provided that its separate capital and surplus
shall at all times be at least the amount specified in Section  310(a)(2) of the
Trust  Indenture Act of 1939,  (ii) be subject to  supervision or examination by
federal  or state  authority  and (iii)  have a credit  rating  or be  otherwise
acceptable to the Rating Agencies such that neither of the Rating Agencies would
reduce  their  respective  then  current  ratings of the  Certificates  (or have
provided  such  security  from  time to  time as is  sufficient  to  avoid  such
reduction) as evidenced in writing by each Rating Agency. If such corporation or
association publishes reports of condition at least annually, pursuant to law or
to the requirements of the aforesaid  supervising or examining  authority,  then
for the  purposes  of this  Section  the  combined  capital  and surplus of such
corporation  or  association  shall be deemed  to be its  combined  capital  and
surplus as set forth in its most recent  report of  condition so  published.  In
case at any time the Trustee shall cease to be eligible in  accordance  with the
provisions of this Section,  the Trustee shall resign  immediately in the manner
and with the effect specified in Section 8.08.

SECTION 8.08. RESIGNATION AND REMOVAL.

            The Trustee may at any time resign and be discharged  from the trust
hereby created by giving  written notice of resignation to the Master  Servicer,
such  resignation to be effective upon the  appointment of a successor  trustee.
Upon receiving such notice of  resignation,  the Master  Servicer shall promptly
appoint a successor  trustee by written  instrument,  in duplicate,  one copy of
which  instrument shall be delivered to the resigning entity and one copy to its
successor.  If no successor  trustee shall have been appointed and have accepted
appointment  within 30 days after the giving of such notice of resignation,  the
resigning  Trustee may  petition  any court of  competent  jurisdiction  for the
appointment of a successor trustee.

            If at any time the Trustee  shall cease to be eligible in accordance
with the  provisions  of  Section  8.07 and shall fail to resign  after  written
request  for its  resignation  by the  Master  Servicer,  or if at any  time the
Trustee shall become incapable of acting, or an order for relief shall have been
entered in any bankruptcy or insolvency  proceeding with respect to such entity,
or a receiver  of such  entity or of its  property  shall be  appointed,  or any
public officer shall take charge or control of the Trustee or of the property or
affairs  of the  Trustee  for  the  purpose  of  rehabilitation,  conversion  or
liquidation,  or the Master  Servicer shall deem it necessary in order to change
the situs of the Trust  Estate for state tax reasons,  then the Master  Servicer
shall remove the Trustee and appoint a successor trustee by written  instrument,
in duplicate,  one copy of which instrument shall be delivered to the Trustee so
removed and one copy to the successor trustee.

            The Holders of  Certificates  evidencing  in the  aggregate not less
than 51% of the Voting Interests  represented by all  Certificates  (except that
any Certificate registered in the name of the Seller, the Master Servicer or any
affiliate  thereof  will not be taken into  account in  determining  whether the
requisite Voting Interests has been obtained) may at any time remove the Trustee
and appoint a successor by written  instrument or  instruments,  in  triplicate,
signed by such holders or their attorneys-in-fact duly authorized,  one complete
set of which instruments shall be delivered to the Master Servicer, one complete
set of which  shall be  delivered  to the entity or  entities so removed and one
complete set of which shall be delivered to the successor so appointed.

            Any  resignation  or removal of the  Trustee  and  appointment  of a
successor  pursuant  to any of the  provisions  of  this  Section  shall  become
effective upon acceptance of appointment by the successor as provided in Section
8.09.

SECTION 8.09. SUCCESSOR.

            Any  successor  trustee  appointed as provided in Section 8.08 shall
execute,  acknowledge  and deliver to the Master Servicer and to its predecessor
trustee an instrument  accepting such appointment  hereunder,  and thereupon the
resignation or removal of the predecessor  trustee shall become  effective,  and
such  successor,  without any further act,  deed or  reconveyance,  shall become
fully  vested  with  all the  rights,  powers,  duties  and  obligations  of its
predecessor  hereunder,  with like  effect  as if  originally  named as  trustee
herein.  The  predecessor  trustee  shall  deliver  to its  successor  all Owner
Mortgage Loan Files and related  documents and  statements  held by it hereunder
(other than any Owner Mortgage Loan Files at the time held by a Custodian, which
Custodian shall become the agent of any successor  trustee  hereunder),  and the
Seller, the Master Servicer and the predecessor entity shall execute and deliver
such instruments and do such other things as may reasonably be required for more
fully and certainly  vesting and  confirming  in the successor  trustee all such
rights, powers, duties and obligations. No successor shall accept appointment as
provided in this Section  unless at the time of such  acceptance  such successor
shall be eligible under the provisions of Section 8.07

            Upon  acceptance of  appointment  by a successor as provided in this
Section, the Master Servicer shall mail notice of the succession of such trustee
hereunder  to all Holders of  Certificates  at their  addresses  as shown in the
Certificate  Register.  If the Master  Servicer fails to mail such notice within
ten days after acceptance of the successor trustee,  the successor trustee shall
cause such notice to be mailed at the expense of the Master Servicer.

SECTION 8.10. MERGER OR CONSOLIDATION.

            Any Person into which the Trustee may be merged or converted or with
which it may be  consolidated,  to which it may sell or transfer  its  corporate
trust business and assets as a whole or  substantially  as a whole or any Person
resulting from any merger, sale, transfer,  conversion or consolidation to which
the Trustee shall be a party,  or any Person  succeeding to the business of such
entity, shall be the successor of the Trustee hereunder; provided, however, that
(i) such Person shall be eligible under the provisions of Section 8.07,  without
the  execution  or filing of any paper or any  further act on the part of any of
the parties hereto,  anything herein to the contrary  notwithstanding,  and (ii)
the  Trustee  shall  deliver  an Opinion of Counsel to the Seller and the Master
Servicer to the effect that such merger,  consolidation,  sale or transfer  will
not subject the REMIC to federal,  state or local tax or cause the REMIC to fail
to qualify as a REMIC,  which Opinion of Counsel shall be at the sole expense of
the Trustee.

SECTION 8.11. AUTHENTICATING AGENT.

            The  Trustee  may appoint an  Authenticating  Agent,  which shall be
authorized  to act on  behalf of the  Trustee  in  authenticating  Certificates.
Wherever   reference  is  made  in  this  Agreement  to  the  authentication  of
Certificates  by the Trustee or the Trustee's  countersignature,  such reference
shall be deemed to  include  authentication  on  behalf  of the  Trustee  by the
Authenticating  Agent and a certificate of authentication  executed on behalf of
the  Trustee  by the  Authenticating  Agent.  The  Authenticating  Agent must be
acceptable  to the  Seller  and the Master  Servicer  and must be a  corporation
organized and doing  business  under the laws of the United States of America or
of any state,  having a  principal  office and place of  business in a state and
city acceptable to the Seller and the Master Servicer, having a combined capital
and surplus of at least  $15,000,000,  authorized  under such laws to do a trust
business  and  subject  to  supervision  or  examination  by  federal  or  state
authorities.

            Any corporation into which the Authenticating Agent may be merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion or consolidation to which the Authenticating  Agent
shall be a party, or any corporation succeeding to the corporate agency business
of the  Authenticating  Agent,  shall be the  Authenticating  Agent  without the
execution  or filing of any paper or any  further act on the part of the Trustee
or the Authenticating Agent.

            The  Authenticating  Agent may at any time resign by giving at least
30 days' advance  written notice of  resignation to the Trustee,  the Seller and
the Master  Servicer.  The Trustee may at any time  terminate  the agency of the
Authenticating  Agent by giving  written  notice  thereof to the  Authenticating
Agent,  the  Seller  and  the  Master  Servicer.  Upon  receiving  a  notice  of
resignation  or  upon  such  a   termination,   or  in  case  at  any  time  the
Authenticating  Agent  shall  cease  to  be  eligible  in  accordance  with  the
provisions of this Section 8.11, the Trustee  promptly shall appoint a successor
Authenticating  Agent,  which shall be  acceptable to the Master  Servicer,  and
shall give  written  notice of such  appointment  to the Seller,  and shall mail
notice  of  such   appointment   to  all   Certificateholders.   Any   successor
Authenticating  Agent upon acceptance of its appointment  hereunder shall become
vested  with  all  the  rights,  powers,  duties  and  responsibilities  of  its
predecessor hereunder, with like effect as if originally named as Authenticating
Agent  herein.  No  successor  Authenticating  Agent shall be  appointed  unless
eligible under the provisions of this Section 8.11.

            The  Authenticating  Agent shall have no responsibility or liability
for any  action  taken  by it as  such  at the  direction  of the  Trustee.  Any
reasonable compensation paid to the Authenticating Agent shall be a reimbursable
expense under Section 8.06.

SECTION 8.12. SEPARATE TRUSTEES AND CO-TRUSTEES.

            The Trustee shall have the power from time to time to appoint one or
more  persons or  corporations  to act either as  co-trustees  jointly  with the
Trustee,  or as  separate  trustees,  for  the  purpose  of  holding  title  to,
foreclosing or otherwise taking action with respect to any Mortgage Loan outside
the state where the  Trustee has its  principal  place of  business,  where such
separate  trustee or  co-trustee  is necessary  or advisable  (or the Trustee is
advised by the Master  Servicer  that such  separate  trustee or  co-trustee  is
necessary  or  advisable)  under  the laws of any  state  in  which a  Mortgaged
Property  is located or for the  purpose of  otherwise  conforming  to any legal
requirement, restriction or condition in any state in which a Mortgaged Property
is located or in any state in which any portion of the Trust  Estate is located.
The Master Servicer shall advise the Trustee when, in its good faith opinion,  a
separate  trustee or  co-trustee  is necessary or  advisable as  aforesaid.  The
separate  trustees or co-trustees so appointed shall be trustees for the benefit
of all of the Certificateholders and shall have such powers, rights and remedies
as shall be specified in the instrument of appointment;  provided, however, that
no such  appointment  shall, or shall be deemed to,  constitute the appointee an
agent of the Trustee.  The Seller and the Master Servicer shall join in any such
appointment,  but such joining shall not be necessary for the  effectiveness  of
such appointment.

            Every separate trustee and co-trustee shall, to the extent permitted
by law, be appointed and act subject to the following provisions and conditions:

                  (i) all powers, duties,  obligations and rights conferred upon
      the  Trustee,  in respect of the  receipt,  custody  and payment of moneys
      shall be exercised solely by the Trustee;

                  (ii)  all  other  rights,   powers,   duties  and  obligations
      conferred or imposed  upon the Trustee  shall be conferred or imposed upon
      and  exercised or performed  by the Trustee and such  separate  trustee or
      co-trustee  jointly,  except  to the  extent  that  under  any  law of any
      jurisdiction  in which  any  particular  act or acts  are to be  performed
      (whether  as Trustee  hereunder  or as  successor  to the Master  Servicer
      hereunder) the Trustee shall be incompetent or unqualified to perform such
      act or acts, in which event such rights,  powers,  duties and  obligations
      (including the holding of title to the Trust Estate or any portion thereof
      in any  such  jurisdiction)  shall  be  exercised  and  performed  by such
      separate trustee or co-trustee;

                  (iii) no separate  trustee or  co-trustee  hereunder  shall be
      personally  liable by reason of any act or omission of any other  separate
      trustee or co-trustee hereunder; and

                  (iv) the Trustee may at any time accept the  resignation of or
      remove any  separate  trustee or  co-trustee  so  appointed by it, if such
      resignation or removal does not violate the other terms of this Agreement.

            Any notice,  request or other  writing given to the Trustee shall be
deemed to have been given to each of the then separate trustees and co-trustees,
as  effectively  as if given to each of them.  Every  instrument  appointing any
separate trustee, co-trustee, or custodian shall refer to this Agreement and the
conditions  of this  Article.  Each separate  trustee and  co-trustee,  upon its
acceptance of the trusts conferred, shall be vested with the estates or property
specified in its instrument of appointment,  either jointly with the Trustee, or
separately,  as may be provided  therein,  subject to all the provisions of this
Agreement,  specifically including every provision of this Agreement relating to
the conduct of,  affecting  the liability  of, or affording  protection  to, the
Trustee. Every such instrument shall be furnished to the Trustee.

            Any separate  trustee,  co-trustee,  or custodian  may, at any time,
constitute  the  Trustee,  its agent or  attorney-in-fact,  with full  power and
authority, to the extent not prohibited by law, to do any lawful act under or in
respect of this Agreement on its behalf and in its name. If any separate trustee
or co-trustee shall die, become incapable of acting,  resign or be removed,  all
of its  estates,  properties,  rights,  remedies and trusts shall vest in and be
exercised by the Trustee to the extent permitted by law, without the appointment
of a new or successor trustee.

            No separate  trustee or  co-trustee  hereunder  shall be required to
meet the  terms  of  eligibility  as a  successor  trustee  under  Section  8.07
hereunder and no notice to  Certificateholders  of the appointment thereof shall
be required under Section 8.09 hereof.

            The  Trustee  agrees to  instruct  its  co-trustees,  if any, to the
extent necessary to fulfill such entity's obligations hereunder.

            The Master  Servicer  shall pay the reasonable  compensation  of the
co-trustees to the extent,  and in accordance  with the standards,  specified in
Section 8.06 hereof.

SECTION 8.13. APPOINTMENT OF CUSTODIANS.

            The Trustee may at any time on or after the Closing  Date,  with the
consent of the Master Servicer and the Seller, appoint one or more Custodians to
hold all or a portion of the Owner Mortgage Loan Files as agent for the Trustee,
by entering  into a  Custodial  Agreement.  Subject to this  Article  VIII,  the
Trustee  agrees to  comply  with the terms of each  Custodial  Agreement  and to
enforce the terms and provisions  thereof  against the Custodian for the benefit
of the  Certificateholders.  Each  Custodian  shall be a depository  institution
subject to  supervision  by federal  or state  authority,  shall have a combined
capital  and  surplus  of at least  $10,000,000  and  shall be  qualified  to do
business in the  jurisdiction  in which it holds any Owner  Mortgage  Loan File.
Each Custodial Agreement may be amended only as provided in Section 10.01(a).

SECTION 8.14. TAX MATTERS; COMPLIANCE WITH REMIC PROVISIONS.

            (a) Each of the Trustee and the Master Servicer covenants and agrees
that it shall perform its duties hereunder in a manner consistent with the REMIC
Provisions  and shall not  knowingly  take any action or fail to take any action
that would (i) affect the determination of the Trust Estate's status as 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 Trustee,  shall (i) prepare
or cause to be  prepared,  timely  cause to be signed by the Trustee and file or
cause to be filed  annual  federal  and  applicable  state and local  income tax
returns  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  Trustee  and  calculated  on a monthly  basis by using the
issue prices of the Certificates;  (iv) make available information necessary for
the  application  of any tax imposed on  transferors  of residual  interests  to
"disqualified organizations" (as defined in the REMIC Provisions); (v) file Form
8811 and apply for an  Employee  Identification  Number  with a Form SS-4 or any
other permissible method 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, 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 the 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 shall sign the tax returns
referred to in clause (i) of the second preceding sentence.

            In order to enable the Master  Servicer or the Trustee,  as the case
may be, to perform its duties as set forth above,  the Seller shall provide,  or
cause to be provided,  to the Master  Servicer within ten days after the Closing
Date all information or data that the Master Servicer  determines to be relevant
for tax  purposes to the  valuations  and offering  prices of the  Certificates,
including,  without  limitation,  the price,  yield,  prepayment  assumption and
projected cash flows of each Class of Certificates and the Mortgage Loans in the
aggregate.  Thereafter,  the Seller shall provide to the Master  Servicer or the
Trustee, as the case may be, promptly upon request therefor, any such additional
information or data that the Master Servicer or the Trustee, as the case may be,
may from time to time, request in order to enable the Master Servicer to perform
its duties as set forth above. The Seller hereby indemnifies the Master Servicer
and the  Trustee,  as the case may be,  for any  losses,  liabilities,  damages,
claims or expenses of the Master Servicer or the Trustee arising from any errors
or  miscalculations  by the Master  Servicer  or the  Trustee  pursuant  to this
Section that result from any failure of the Seller to provide, or to cause to be
provided, accurate information or data to the Master Servicer or the Trustee, as
the case may be, on a timely basis.  The Master Servicer hereby  indemnifies the
Seller and the Trustee for any losses, liabilities,  damages, claims or expenses
of the  Seller  or the  Trustee  arising  from  the  Master  Servicer's  willful
misfeasance,  bad faith or gross  negligence  in  preparing  any of the federal,
state and local tax returns of the REMIC as described  above.  In the event that
the  Trustee  prepares  any of the  federal,  state and local tax returns of the
REMIC as described  above,  the Trustee  hereby  indemnifies  the Seller and the
Master Servicer for any losses, liabilities,  damages, claims or expenses of the
Seller or the Master Servicer  arising from the Trustee's  willful  misfeasance,
bad faith or negligence in connection with such preparation.

            (b) Notwithstanding anything in this Agreement to the contrary, each
of the Master Servicer and the Trustee shall pay from its own funds, without any
right of  reimbursement  therefor,  the  amount of any  costs,  liabilities  and
expenses incurred by the Trust Estate (including,  without  limitation,  any and
all  federal,  state or local  taxes,  including  taxes  imposed on  "prohibited
transactions"  within the meaning of the REMIC  Provisions) if and to the extent
that such costs,  liabilities  and  expenses  arise from a failure of the Master
Servicer or the Trustee to,  respectively,  perform its  obligations  under this
Section 8.14.

SECTION 8.15. MONTHLY ADVANCES.

            In the event that Norwest  Mortgage fails to make a Periodic Advance
required to be made pursuant to the Norwest Servicing Agreement on or before the
Distribution  Date,  the  Trustee  shall make a Periodic  Advance as required by
Section 3.03 hereof;  provided,  however,  the Trustee  shall not be required to
make such Periodic  Advances if prohibited by law or if it determines  that such
Periodic  Advance  would be a  Nonrecoverable  Advance.  With  respect  to those
Periodic Advances which should have been made by Norwest  Mortgage,  the Trustee
shall be entitled,  pursuant to Section  3.02(a)(i),  (ii) or (v) hereof,  to be
reimbursed from the Certificate Account for Periodic Advances and Nonrecoverable
Advances made by it.

SECTION 8.16. TRUSTEE COVENANTS CONCERNING YEAR 2000 COMPLIANCE.

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




<PAGE>







                                   ARTICLE IX

                                   TERMINATION

SECTION 9.01. TERMINATION UPON PURCHASE BY THE
              SELLER OR LIQUIDATION OF ALL MORTGAGE LOANS.

            Subject  to   Section   9.02,   the   respective   obligations   and
responsibilities  of the Seller,  the Master  Servicer  and the Trustee  created
hereby (other than the obligation of the Trustee to make certain  payments after
the Final  Distribution  Date to  Certificateholders  and the  obligation of the
Master  Servicer to send certain  notices as  hereinafter  set forth and the tax
reporting  obligations under Sections 4.05 and 8.14 hereof) shall terminate upon
the last action  required  to be taken by the Trustee on the Final  Distribution
Date  pursuant to this Article IX  following  the earlier of (i) the purchase by
the Seller of all  Mortgage  Loans and all  property  acquired in respect of any
Mortgage  Loan  remaining in the Trust Estate at a price equal to the sum of (x)
100% of the unpaid  principal  balance of each Mortgage Loan (other than any REO
Mortgage Loan) as of the Final  Distribution Date, and (y) the fair market value
of the Mortgaged Property related to any REO Mortgage Loan (as determined by the
Master  Servicer  as of the close of  business  on the third  Business  Day next
preceding  the date upon which  notice of any such  termination  is furnished to
Certificateholders  pursuant to the third paragraph of this Section 9.01),  plus
any accrued and unpaid interest  through the last day of the month preceding the
month of such purchase at the applicable  Mortgage  Interest Rate less any Fixed
Retained Yield on each Mortgage Loan  (including any REO Mortgage Loan) and (ii)
the final payment or other  liquidation (or any advance with respect thereto) of
the last Mortgage Loan remaining in the Trust Estate (including for this purpose
the  discharge  of any  Mortgagor  under a  defaulted  Mortgage  Loan on which a
Servicer is not obligated to foreclose due to  environmental  impairment) or the
disposition  of all  property  acquired  upon  foreclosure  or  deed  in lieu of
foreclosure of any Mortgage Loan; provided,  however, that in no event shall the
trust created hereby  continue  beyond the expiration of 21 years from the death
of the  last  survivor  of the  descendants  of  Joseph  P.  Kennedy,  the  late
ambassador of the United  States to the Court of St.  James,  living on the date
hereof.

            The right of the  Seller  to  purchase  all the  assets of the Trust
Estate pursuant to clause (i) of the preceding  paragraph are subject to Section
9.02 and conditioned upon the Pool Scheduled  Principal  Balance of the Mortgage
Loans as of the Final  Distribution Date being less than the amount set forth in
Section 11.22. In the case of any purchase by the Seller pursuant to said clause
(i),  the Seller  shall  provide to the  Trustee the  certification  required by
Section 3.04 and the Trustee and the Custodian shall, promptly following payment
of the  purchase  price,  release to the Seller  the Owner  Mortgage  Loan Files
pertaining to the Mortgage Loans being purchased.

            Notice of any termination,  specifying the Final  Distribution  Date
(which shall be a date that would  otherwise be a Distribution  Date) upon which
the  Certificateholders  may  surrender  their  Certificates  to the Trustee for
payment of the final  distribution and cancellation,  shall be given promptly by
the Master Servicer (if it is exercising its right to purchase the assets of the
Trust   Estate)  or  by  the   Trustee   (in  any  other   case)  by  letter  to
Certificateholders  mailed not earlier than the 15th day of the month  preceding
the month of such final distribution and not later than the twentieth day of the
month of such final distribution specifying (A) the Final Distribution Date upon
which  final  payment of the  Certificates  will be made upon  presentation  and
surrender  of  Certificates  at the  office  or agency  of the  Trustee  therein
designated,  (B) the  amount of any such final  payment  and (C) that the Record
Date otherwise applicable to such Distribution Date is not applicable,  payments
being made (except in the case of any Class A Certificate surrendered on a prior
Distribution Date pursuant to Section 4.01) only upon presentation and surrender
of the Certificates at the office or agency of the Trustee therein specified. If
the  Master  Servicer  is  obligated  to give  notice to  Certificateholders  as
aforesaid,  it  shall  give  such  notice  to the  Trustee  and the  Certificate
Registrar at the time such notice is given to  Certificateholders.  In the event
such notice is given by the Master  Servicer,  the Master Servicer shall deposit
in  the  Certificate  Account  on or  before  the  Final  Distribution  Date  in
immediately available funds an amount equal to the purchase price for the assets
of the Trust  Estate  computed  as above  provided.  Failure  to give  notice of
termination  as described  herein shall not entitle a  Certificateholder  to any
interest beyond the interest payable on the Final Distribution Date.

            Upon  presentation  and surrender of the  Certificates,  the Trustee
shall cause to be distributed to  Certificateholders  on the Final  Distribution
Date in proportion to their respective  Percentage  Interests an amount equal to
(i) as to the Classes of Class A Certificates,  the respective Principal Balance
together  with any related  Class A Unpaid  Interest  Shortfall  and one month's
interest in an amount equal to the respective  Interest Accrual Amount,  (ii) as
to the  Classes  of  Class B  Certificates,  the  respective  Principal  Balance
together  with any related  Class B Unpaid  Interest  Shortfall  and one month's
interest in an amount equal to the respective  Interest Accrual Amount and (iii)
as to the Class A-R 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 Trustee of any Periodic  Advances,  is
insufficient to pay in full the amounts set forth in clauses (i), (ii) and (iii)
of this paragraph,  then any shortfall in the amount  available for distribution
to  Certificateholders  shall be allocated in reduction of the amounts otherwise
distributable  on the Final  Distribution  Date in the same  manner as  Realized
Losses are  allocated  pursuant to Sections  4.02(b)  and 4.02(g)  hereof.  Such
distribution on the Final Distribution Date shall be in lieu of the distribution
otherwise required to be made on such Distribution Date in respect of each Class
of Certificates.

            In the event that all of the Certificateholders  shall not surrender
their  Certificates  for final  payment and  cancellation  within  three  months
following the Final  Distribution Date, the Trustee shall on such date cause all
funds, if any, in the Certificate  Account not distributed in final distribution
to  Certificateholders  to be withdrawn  therefrom and credited to the remaining
Certificateholders by depositing such funds in a separate escrow account for the
benefit of such Certificateholders, and the Master Servicer (if it exercised its
right to purchase  the assets of the Trust  Estate) or the Trustee (in any other
case) shall give a second written notice to the remaining  Certificateholders to
surrender their Certificates for cancellation and receive the final distribution
with respect  thereto.  If within  three months after the second  notice all the
Certificates  shall not have been surrendered for cancellation,  the Trustee may
take appropriate  steps, or may appoint an agent to take  appropriate  steps, to
contact  the  remaining   Certificateholders   concerning   surrender  of  their
Certificates,  and the cost thereof shall be paid out of the funds on deposit in
such escrow account.

SECTION 9.02. ADDITIONAL TERMINATION REQUIREMENTS.

            In the event of a termination  of the Trust Estate upon the exercise
by the Seller of its  purchase  option as  provided in Section  9.01,  the Trust
Estate  shall  be  terminated  in  accordance  with  the  following   additional
requirements,  unless  the  Trustee  has  received  an Opinion of Counsel to the
effect that any other  manner of  termination  (i) will  constitute a "qualified
liquidation"   of  the  Trust   Estate   within  the  meaning  of  Code  Section
860F(a)(4)(A)  and (ii) will not  subject  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
      Trustee shall sell all of the assets of the Trust Estate to the Seller for
      cash at the purchase price specified in Section 9.01 and shall  distribute
      such cash  within 90 days of such  adoption  in the  manner  specified  in
      Section 9.01.




<PAGE>







                                    ARTICLE X

                            MISCELLANEOUS PROVISIONS

SECTION 10.01.    AMENDMENT.

            (a) This  Agreement or any  Custodial  Agreement may be amended from
time to time by the Seller, the Master Servicer and the Trustee and with respect
only to amendments  affecting the rights or  obligations  of Ambac,  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,  the REMIC  pursuant to the
Code that  would be a claim  against  the Trust  Estate,  provided  that (a) the
Trustee  has  received  an Opinion of Counsel to the effect  that such action is
necessary or desirable to maintain  such  qualification  or to avoid or minimize
the risk of the  imposition  of any such tax and (b) such  action  shall not, as
evidenced by such Opinion of Counsel,  adversely  affect in any material respect
the interests of any Certificateholder,  (iv) to change the timing and/or nature
of deposits  into the  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 (without, in the case of the Class
A-2  Certificates,  giving  effect to the  guaranty  provided by Ambac),  (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 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 and the Trustee with the consent
of Ambac (only with respect to amendments affecting the rights or obligations of
Ambac) and the Holders of Certificates evidencing in the aggregate not less than
66-2/3% of the aggregate Voting Interests of each Class of Certificates affected
thereby for the purpose of adding any provisions to or changing in any manner or
eliminating any of the provisions of this Agreement or such Custodial  Agreement
or of modifying in any manner the rights of the Holders of  Certificates of such
Class; provided,  however, that no such amendment shall (i) reduce in any manner
the amount of, or delay the timing of, payments received on Mortgage Loans which
are required to be  distributed  on any  Certificate  without the consent of the
Holder of such  Certificate,  (ii) adversely  affect in any material respect the
interest of the Holders of  Certificates  of any Class in a manner other than as
described in clause (i) hereof without the consent of Holders of Certificates of
such Class evidencing,  as to such Class, Voting Interests  aggregating not less
than 66-2/3% or (iii) reduce the  aforesaid  percentage of  Certificates  of any
Class the  Holders  of which are  required  to  consent  to any such  amendment,
without  the  consent  of the  Holders  of all  Certificates  of such Class then
outstanding.

            Notwithstanding  any  contrary  provision  of  this  Agreement,  the
Trustee  shall not consent to any  amendment to this  Agreement  unless it shall
have first received an Opinion of Counsel to the effect that such amendment will
not subject  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 Trustee shall furnish  written  notification of the
substance of such amendment to each Certificateholder.

            It shall not be  necessary  for the  consent  of  Certificateholders
under this  Section  10.01(a) to approve  the  particular  form of any  proposed
amendment,  but it  shall  be  sufficient  if such  consent  shall  approve  the
substance  thereof.  The manner of obtaining such consents and of evidencing the
authorization of the execution thereof by Certificateholders shall be subject to
such reasonable regulations as the Trustee may prescribe.

            (b)  Notwithstanding  any contrary provision of this Agreement,  the
Master  Servicer may,  from time to time,  amend  Schedule I hereto  without the
consent of any Certificateholder,  the Trustee or Ambac; provided,  however, (i)
that  such  amendment  does not  conflict  with any  provisions  of the  related
Servicing Agreement,  (ii) that the related Servicing Agreement provides for the
remittance  of each type of  Unscheduled  Principal  Receipts  received  by such
Servicer  during the  Applicable  Unscheduled  Principal  Receipt  Period (as so
amended) related to each  Distribution Date to the Master Servicer no later than
the 24th day of the month in which such  Distribution Date occurs and (iii) that
such amendment is for the purpose of:

                  (i)   changing the Applicable  Unscheduled Principal Receipt
      Period for  Exhibit F-1  Mortgage  Loans to a Mid-Month  Receipt  Period
      with respect to all Unscheduled Principal Receipts; or

                  (ii) changing the  Applicable  Unscheduled  Principal  Receipt
      Period for all  Mortgage  Loans  serviced  by any  Servicer to a Mid-Month
      Receipt Period with respect to Full Unscheduled  Principal Receipts and to
      a Prior Month Receipt Period with respect to Partial Unscheduled Principal
      Receipts.

            A copy of any  amendment  to  Schedule  I pursuant  to this  Section
10.01(b) shall be promptly forwarded to the Trustee.

SECTION 10.02.    RECORDATION OF AGREEMENT.

            This  Agreement  (or  an  abstract  hereof,  if  acceptable  to  the
applicable recording office) is subject to recordation in all appropriate public
offices  for  real  property  records  in all  the  towns  or  other  comparable
jurisdictions in which any or all of the Mortgaged Properties are situated,  and
in any other  appropriate  public office or elsewhere,  such  recordation  to be
effected by the Master  Servicer and at its expense on direction by the Trustee,
but only upon direction  accompanied by an Opinion of Counsel to the effect that
such  recordation  materially  and  beneficially  affects the  interests  of the
Certificateholders.

            For the purpose of facilitating the recordation of this Agreement as
herein  provided  and  for  other  purposes,  this  Agreement  may  be  executed
simultaneously in any number of counterparts,  each of which  counterparts shall
be deemed to be an original,  and such counterparts shall constitute but one and
the same instrument.

SECTION 10.03.    LIMITATION ON RIGHTS OF CERTIFICATEHOLDERS.

            The death or incapacity of any  Certificateholder  shall not operate
to   terminate   this   Agreement  or  the  Trust   Estate,   nor  entitle  such
Certificateholder's  legal  representatives  or heirs to claim an  accounting or
take any action or  proceeding in any court for a partition or winding up of the
Trust Estate,  nor otherwise  affect the rights,  obligations and liabilities of
the parties hereto or any of them.

            Except as otherwise expressly provided herein, no Certificateholder,
solely by virtue of its status as a  Certificateholder,  shall have any right to
vote or in any manner  otherwise  control the  operation  and  management of the
Trust Estate,  or the  obligations  of the parties  hereto,  nor shall  anything
herein set forth, or contained in the terms of the Certificates, be construed so
as to constitute the Certificateholders from time to time as partners or members
of an association, nor shall any Certificateholder be under any liability to any
third  person by reason of any action  taken by the  parties  to this  Agreement
pursuant to any provision hereof.

            No   Certificateholder,   solely  by   virtue   of  its   status  as
Certificateholder,  shall  have  any  right  by  virtue  or by  availing  of any
provision of this  Agreement  to institute  any suit,  action or  proceeding  in
equity or at law upon or under or with  respect to this  Agreement,  unless such
Holder  previously  shall have given to the Trustee a written  notice of default
and of the continuance  thereof, as hereinbefore  provided,  and unless also the
Holders of  Certificates  evidencing  not less than 25% of the  Voting  Interest
represented by all Certificates shall have made written request upon the Trustee
to  institute  such  action,  suit  or  proceeding  in its own  name as  Trustee
hereunder and shall have offered to the Trustee such reasonable  indemnity as it
may require against the cost, expenses and liabilities to be incurred therein or
thereby, and the Trustee, for 60 days after its receipt of such notice,  request
and offer of  indemnity,  shall have  neglected or refused to institute any such
action,  suit or  proceeding;  it  being  understood  and  intended,  and  being
expressly    covenanted   by   each    Certificateholder    with   every   other
Certificateholder  and the Trustee,  that no one or more Holders of Certificates
shall  have any right in any manner  whatever  by virtue or by  availing  of any
provision of this  Agreement to affect,  disturb or prejudice  the rights of the
Holders  of any  other of such  Certificates,  or to  obtain  or seek to  obtain
priority over or  preference  to any other such Holder,  or to enforce any right
under this  Agreement,  except in the manner herein provided and for the benefit
of all Certificateholders.  For the protection and enforcement of the provisions
of this  Section,  each and every  Certificateholder  and the  Trustee  shall be
entitled to such relief as can be given either at law or in equity.

SECTION 10.04.    GOVERNING LAW; JURISDICTION.

            This Agreement shall be construed in accordance with the laws of the
State of New York  (without  regard to  conflicts of laws  principles),  and the
obligations, rights and remedies of the parties hereunder shall be determined in
accordance with such laws.

SECTION 10.05.    NOTICES.

            All  demands,  notices  and  communications  hereunder  shall  be in
writing and shall be deemed to have been duly given if  personally  delivered at
or mailed by certified or registered mail,  return receipt  requested (i) in the
case of the Seller,  to Norwest Asset Securities  Corporation,  7485 New Horizon
Way,  Frederick,  Maryland 21703,  Attention:  Chief Executive Officer,  or such
other  address as may  hereafter  be  furnished  to the Master  Servicer and the
Trustee in writing by the Seller,  (ii) in the case of the Master  Servicer,  to
Norwest Bank Minnesota,  National Association,  7485 New Horizon Way, Frederick,
Maryland 21703, Attention: Vice President or such other address as may hereafter
be  furnished  to the Seller and the Trustee in writing by the Master  Servicer,
(iii) in the case of the Trustee,  to the Corporate Trust Office,  or such other
address as may  hereafter be furnished to the Seller and the Master  Servicer in
writing by the Trustee,  in each case Attention:  Corporate Trust Department and
(iv) in the case of Ambac, to Ambac Corporation, 1 State Street Plaza, New York,
New  York,  10004,  Attention:  Structured  Finance  Department;   Confirmation:
212-668-0340;  Telecopy:  212-363-1459  (in each  case in which  notice or other
communication to Ambac refers to an Event of Default or a claim under the policy
or with respect to which failure on the part of Ambac to respond shall be deemed
to  constitute  consent  or  acceptance,  then a copy of such  notice  or  other
communication  should also be sent to the  attention of the General  Counsel and
shall be marked to indicate "URGENT MATERIAL ENCLOSED").  Any notice required or
permitted  to be mailed  to a  Certificateholder  shall be given by first  class
mail, postage prepaid, at the address of such Holder as shown in the Certificate
Register.  Any notice mailed or transmitted  within the time  prescribed in this
Agreement shall be conclusively presumed to have been duly given, whether or not
the addressee receives such notice,  provided,  however, that any demand, notice
or  communication  to or upon the Seller,  the Master  Servicer,  or the Trustee
shall not be effective until received.

            For all  purposes  of  this  Agreement,  in the  absence  of  actual
knowledge by an officer of the Master Servicer, the Master Servicer shall not be
deemed to have  knowledge  of any act or failure to act of any  Servicer  unless
notified   thereof   in   writing   by  the   Trustee,   such   Servicer   or  a
Certificateholder.

SECTION 10.06.    SEVERABILITY OF PROVISIONS.

            If any one or more of the covenants, agreements, provisions or terms
of this Agreement  shall be for any reason  whatsoever  held invalid,  then such
covenants,  agreements,  provisions or terms shall be deemed  severable from the
remaining covenants, agreements, provisions or terms of this Agreement and shall
in no way affect the validity or  enforceability of the other provisions of this
Agreement or of the Certificates or the rights of the Holders thereof.

SECTION 10.07.    SPECIAL NOTICES TO RATING AGENCIES AND AMBAC.

            (a) The Trustee  shall give prompt  notice to each Rating Agency and
Ambac 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 and Ambac of the occurrence of any of the following events:

                  (i) the appointment of a Custodian pursuant to Section 2.02;

                  (ii) the  resignation  or removal of the  Trustee  pursuant to
      Section 8.08;

                  (iii) the  appointment  of a  successor  trustee  pursuant  to
      Section 8.09; or

                  (iv)  the  sale,  transfer  or other  disposition  in a single
      transaction of 50% or more of the equity interests in the Master Servicer.

            (c) The Master Servicer shall deliver to each Rating Agency:

                  (i) reports prepared pursuant to Section 3.05; and

                  (ii) statements prepared pursuant to Section 4.04.

SECTION 10.08.    COVENANT OF SELLER.

            The  Seller  shall not amend  Article  Third of its  Certificate  of
Incorporation without the prior written consent of each Rating Agency rating the
Certificates.

SECTION 10.09.    RECHARACTERIZATION.

            The Parties  intend the  conveyance  by the Seller to the Trustee of
all of its right,  title and interest in and to the Mortgage  Loans  pursuant to
this Agreement to constitute a purchase and sale and not a loan. Notwithstanding
the  foregoing,  to the extent that such  conveyance is held not to constitute a
sale under applicable law, it is intended that this Agreement shall constitute a
security  agreement under  applicable law and that the Seller shall be deemed to
have  granted to the Trustee a first  priority  security  interest in all of the
Seller's right, title and interest in and to the Mortgage Loans.




<PAGE>







                                   ARTICLE XI

                             TERMS FOR CERTIFICATES

SECTION 11.01.    CLASS A FIXED PASS-THROUGH RATE.

            The Class A Fixed Pass-Through Rate is 7.250% per annum.

SECTION 11.02.    CUT-OFF DATE.

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

SECTION 11.03.    CUT-OFF DATE AGGREGATE PRINCIPAL BALANCE.

            The Cut-Off Date Aggregate Principal Balance is $229,365,447.09.

SECTION 11.04.    ORIGINAL CLASS A PERCENTAGE.

            The Original Class A Percentage 95.92216612%.

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            $ 127,000,000.00
                    Class A-2            $  43,638,000.00
                    Class A-3            $     362,000.00
                    Class A-4            $  44,829,000.00
                    Class A-PO           $   4,361,041.19
                    Class A-R            $         100.00


SECTION 11.06.    ORIGINAL CLASS A NON-PO PRINCIPAL BALANCE.

            The Original Class A Non-PO Principal Balance is $215,829,100.00.

SECTION 11.07.    ORIGINAL SUBORDINATED PERCENTAGE.

            The Original Subordinated Percentage is 4.07783388%.

SECTION 11.08.    ORIGINAL CLASS B-1 PERCENTAGE.

            The Original Class B-1 Percentage is 1.93685096%.

SECTION 11.09.    ORIGINAL CLASS B-2 PERCENTAGE.

            The Original Class B-2 Percentage is 0.86664970%

SECTION 11.10.    ORIGINAL CLASS B-3 PERCENTAGE.

            The Original Class B-3 Percentage is 0.50976780%.

SECTION 11.11.    ORIGINAL CLASS B-4 PERCENTAGE.

            The Original Class B-4 Percentage is 0.30577179%.

SECTION 11.12.    ORIGINAL CLASS B-5 PERCENTAGE.

            The Original Class B-5 Percentage is 0.20355157%.

SECTION 11.13.    ORIGINAL CLASS B-6 PERCENTAGE.

            The Original Class B-6 Percentage is 0.25524207%.

SECTION 11.14.    ORIGINAL CLASS B PRINCIPAL BALANCE.

            The Original Class B Principal Balance is $9,175,305.90.

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            $  4,358,000.00
                      Class B-2            $  1,950,000.00
                      Class B-3            $  1,147,000.00
                      Class B-4            $    688,000.00
                      Class B-5            $    458,000.00
                      Class B-6            $    574,305.90


SECTION 11.16.    ORIGINAL CLASS B-1 FRACTIONAL INTEREST.

            The Original Class B-1 Fractional Interest is 2.14098292%.

SECTION 11.17.    ORIGINAL CLASS B-2 FRACTIONAL INTEREST.

            The Original Class B-2 Fractional Interest is 1.27433322%.

SECTION 11.18.    ORIGINAL CLASS B-3 FRACTIONAL INTEREST.

            The Original Class B-3 Fractional Interest is 0.76456542%.

SECTION 11.19.    ORIGINAL CLASS B-4 FRACTIONAL INTEREST.

            The Original Class B-4 Fractional Interest is 0.45879363%.

SECTION 11.20.    ORIGINAL CLASS B-5 FRACTIONAL INTEREST.

            The Original Class B-5 Fractional Interest is 0.25524206%.

SECTION 11.21.    CLOSING DATE.

            The Closing Date is November 23, 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  $22,936,544.71  (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,  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 Certificate is
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-PO and Class A-R Certificates) and each Class of the
Class B  Certificates  (other  than the  Class  B-4,  Class  B-5 and  Class  B-6
Certificates)  represents a $100,000 Denomination.  A Single Certificate for the
Class A-2 Certificates  represents a $1,000  Denomination.  A Single Certificate
for  the  Class  A-R  Certificates  represents  a $100  Denomination.  A  Single
Certificate for the Class B-4, Class B-5 and Class B-6 Certificates represents a
$250,000  Denomination.  A Single  Certificate  for the Class A-PO  Certificates
represents a $4,361,041.19 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.

SECTION 11.27.      AMBAC CONTACT PERSON.

            The Ambac Contact Person is Patrick Greene,  Vice President of the
Seller.



<PAGE>




            IN WITNESS WHEREOF,  the Seller, the Master Servicer and the Trustee
have  caused  their  names to be  signed  hereto  by their  respective  officers
thereunto duly authorized, all as of the day and year first above written.


                                       NORWEST ASSET SECURITIES CORPORATION,
                                          as Seller


                                       By:______________________________________
                                          Name: Patrick Greene
                                          Title:
                                          Vice President


                                       NORWEST BANK MINNESOTA, NATIONAL
                                          ASSOCIATION,
                                          as Master Servicer


                                       By::_____________________________________
                                          Name: Nancy E. Burgess
                                          Title:
                                          Vice President


                                       FIRST UNION NATIONAL BANK,
                                          as Trustee


                                       By:______________________________________
                                          Name:
                                          Title:



Attest:_____________________________
By:_________________________________
Name:_______________________________
Title:______________________________





<PAGE>







STATE OF MARYLAND       )
                        ss.:
COUNTY OF FREDERICK     )

            On this 23rd day of November,  1999,  before me, a notary  public in
and for the State of Maryland,  personally appeared Patrick Greene,  known to me
who,  being by me duly sworn,  did depose and say that he resides at  Frederick,
Maryland; 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 23rd day of November,  1999,  before me, a notary  public in
and for the State of Maryland, personally appeared Nancy E. Burgess, known to me
who,  being by me duly sworn,  did depose and say that she resides at Frederick,
Maryland;  that she is a Vice  President  of Norwest  Bank  Minnesota,  National
Association,  a national banking  association,  one of the parties that executed
the foregoing  instrument;  and that she signed her name thereto by order of the
Board of Directors of said corporation.



____________________________
Notary Public



[NOTARIAL SEAL]



<PAGE>




STATE OF NORTH CAROLINA       )
                              ss.:
COUNTY OF                     )

            On this 23rd day of November,  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 s/he resides at
_________________,  North Carolina; that s/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/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 23rd day of November,  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 1999-26
               Applicable Unscheduled Principal Receipt Period



<TABLE>
<CAPTION>

                                                            FULL UNSCHEDULED                    PARTIAL UNSCHEDULED
SERVICER                                                   PRINCIPAL RECEIPTS                   PRINCIPAL RECEIPTS
- --------                                                   ------------------                   ------------------
<S>                                                         <C>                                    <C>

Norwest Mortgage, Inc. (Exhibit F-1)                          Prior Month                           Prior Month
Norwest Mortgage, Inc. (Exhibit F-2)                           Mid-Month                             Mid-Month
National City Mortgage Company                                 Mid- Month                           Prior Month
SunTrust Mortgage, Inc.                                       Prior Month                           Prior Month
NOVUS Financial Corporation                                   Prior-Month                           Prior Month
Merrill Lynch Credit Corporation                               Mid-Month                            Prior Month
Columbia National, Inc.                                        Mid-Month                            Prior Month
Bank United                                                    Mid-Month                            Prior Month
FT Mortgage Companies                                          Mid-Month                            Prior Month
Home Savings Bank of America, FSB                              Mid-Month                            Prior Month
Countrywide Home Loans, Inc.                                  Prior Month                           Prior Month
</TABLE>

<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 1999-26 CLASS A-1

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R P3 7                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-1 Certificates required to be distributed to
Holders of the Class A-1  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-1 Certificates  applicable to each  Distribution Date will be 7.250% 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 Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer



<PAGE>




                                   EXHIBIT A-2
                     [FORM OF FACE OF CLASS A-2 CERTIFICATE]

  [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
     DEPOSITORY TRUST COMPANY TO THE SELLER OR ITS AGENT FOR REGISTRATION OF
   TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN
     THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
    REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO
   CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
    BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE &
                          CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-26 CLASS A-2

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR  AFFILIATES,  OR BY ANY  GOVERNMENT  AGENCY OR (EXCEPT AS  PROVIDED
HEREIN) 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:  November 1, 1999

CUSIP No.:66937R P4 5                      First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage  Interest evidenced by this Certificate and the amount
of  interest  to be  distributed  to Holders of Class A-2  Certificates  on such
Distribution Date as specified in the Agreement. Distributions of principal will
be made to the Holders of the Class A-2  Certificates  as described below and in
the Agreement.  Prior to the Distribution  Date, if any, on which Ambac fails to
make a required  payment  under the Policy,  distributions  in  reduction of the
Principal Balance of this Certificate (including amounts paid in respect of such
losses  under the  Policy as defined  below)  will be made only in lots equal to
$1,000  initial  principal  balance and in accordance  with the  priorities  and
procedures  set forth in Section  4.07 of the  Agreement  (i) at the  request of
Deceased  Holders (ii) at the request of Living Holders and (iii) by random lot.
On and after such  Distribution  Date,  distributions  in reduction of principal
balance will be made as provided 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 7.250% 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.  Any  Non-Supported
Interest Shortfall  allocated to the Class A-2 Certificates will be covered,  to
the extent  available,  by funds in the Reserve Fund, to the extent described in
the Agreement and then by the Policy described below.

            The Class A-2  Certificates  will be entitled  to the  benefits of a
Financial Guaranty  Insurance Policy issued by Ambac Assurance  Corporation (the
"Policy") to the extent described in the Agreement.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds.  Notwithstanding  the above,  the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer



<PAGE>




                                   EXHIBIT A-3
                     [FORM OF FACE OF CLASS A-3 CERTIFICATE]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-26 CLASS A-3

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R P5 2                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-3 Certificates required to be distributed to
Holders of the Class A-3  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement. The Class A-3 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.
Notwithstanding  the above, the final distribution in reduction of the Principal
Balance of this  Certificate  will be made after due notice of the  pendency  of
such  distribution and only upon  presentation and surrender of this Certificate
at the office or agency  specified by the Trustee for that purpose in the notice
of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999, at an issue price
of  35.00000%  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 235% SPA (as
defined in the Prospectus Supplement dated November 17, 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 65.00000000%; and (ii) the annual yield to maturity
of this Certificate,  compounded  monthly,  is approximately  8.20%. There is no
short first accrual period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer



<PAGE>



                                   EXHIBIT A-4
                     [FORM OF FACE OF CLASS A-4 CERTIFICATE]

  [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
     DEPOSITORY TRUST COMPANY TO THE SELLER OR ITS AGENT FOR REGISTRATION OF
   TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN
     THE NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
    REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO
   CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
    BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE &
                        CO., HAS AN INTEREST HEREIN.]

                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-26 CLASS A-4

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R P6 0                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-4 Certificates required to be distributed to
Holders of the Class A-4  Certificates  on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-4 Certificates  applicable to each  Distribution Date will be 7.250% 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 Trustee for that purpose in
the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer

<PAGE>



                                  EXHIBIT A-PO
                    [FORM OF FACE OF CLASS A-PO CERTIFICATE]

THIS  CERTIFICATE  HAS NOT BEEN AND WILL NOT BE REGISTERED  UNDER THE SECURITIES
ACT OF 1933,  AS  AMENDED,  OR THE  SECURITIES  LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED  UNLESS IT IS REGISTERED  PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS  WHICH ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER  APPLICABLE  STATE LAW AND IS TRANSFERRED IN ACCORDANCE  WITH
THE PROVISIONS OF SECTION 5.02 OF THE POOLING AND SERVICING  AGREEMENT  REFERRED
TO HEREIN.

EXCEPT AS PROVIDED IN SECTION  5.02(C) OF THE  POOLING AND  SERVICING  AGREEMENT
REFERRED TO HEREIN,  THIS  CERTIFICATE MAY NOT BE PURCHASED BY OR TRANSFERRED TO
ANY PERSON  THAT HAS NOT  DELIVERED A  REPRESENTATION  LETTER  STATING  THAT THE
TRANSFEREE  IS NOT AN  EMPLOYEE  BENEFIT  PLAN OR OTHER  RETIREMENT  ARRANGEMENT
SUBJECT TO TITLE I OF THE EMPLOYEE  RETIREMENT  INCOME  SECURITY ACT OF 1974, AS
AMENDED  ("ERISA")  OR SECTION 4975 OF THE  INTERNAL  REVENUE  CODE OF 1986,  AS
AMENDED (THE  "CODE"),  OR A  GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA,  SUBJECT  TO ANY  FEDERAL,  STATE OR LOCAL LAW  WHICH  IS, TO A  MATERIAL
EXTENT,  SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE (COLLECTIVELY,
A "PLAN"), AND IS NOT ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.



<PAGE>






                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1999-26, CLASS A-PO

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.:                                 First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution  Amount for the Class A-PO Certificates  required to be distributed
to Holders of the Class A-PO Certificates on such Distribution  Date, subject to
adjustment  in certain  events as  specified  in the  Agreement.  The Class A-PO
Certificates will not be entitled to distributions in respect of interest.

            Distributions  on this  Certificate  will be made on  behalf  of the
Trustee  either by the Master  Servicer or by a Paying  Agent  appointed  by the
Master Servicer by check mailed to the address of the Person  entitled  thereto,
as such name and address shall appear on the Certificate  Register,  unless such
Person is entitled to receive payments by wire transfer in immediately available
funds in accordance with the Pooling and Servicing Agreement and such Person has
notified the Master  Servicer  pursuant to the Pooling and  Servicing  Agreement
that such  payments  are to be made by wire  transfer of  immediately  available
funds..  Notwithstanding  the above, the final  distribution in reduction of the
Principal  Balance  of this  Certificate  will be made  after due  notice of the
pendency of such  distribution and only upon  presentation and surrender of this
Certificate at the office or agency specified by the Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class A-PO  Certificate  will be made unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating that the transferee
is not a Plan and is not  acting on  behalf  of a Plan or using the  assets of a
Plan to  effect  such  purchase  or (ii) if such  transferee  is a Plan,  (a) an
opinion of counsel  acceptable to and in form and substance  satisfactory to the
Trustee  and the  Seller  with  respect to  certain  matters  and (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 November 23, 1999, at an issue price
of  67.53125%  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 235% SPA (as
defined in the Prospectus Supplement dated November 17, 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 32.46875000%; and (ii) the annual yield to maturity
of this Certificate,  compounded  monthly,  is approximately  6.95%. There is no
short first accrual period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer  of the  Trustee  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>


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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer



<PAGE>



                                   EXHIBIT A-R
                     [Form of Face of Class A-R Certificate]

FOR U.S. FEDERAL INCOME TAX PURPOSES,  THIS CERTIFICATE IS A "RESIDUAL INTEREST"
IN A "REAL  ESTATE  MORTGAGE  INVESTMENT  CONDUIT" AS THOSE  TERMS ARE  DEFINED,
RESPECTIVELY,  IN SECTIONS  860G(a)(2) AND 860D OF THE INTERNAL  REVENUE CODE OF
1986, AS AMENDED (THE "CODE").  A TRANSFEREE OF THIS CERTIFICATE,  BY ACCEPTANCE
HEREOF,  IS  DEEMED  TO  HAVE  ACCEPTED  THIS  CERTIFICATE  SUBJECT  TO  CERTAIN
RESTRICTIONS ON TRANSFERABILITY,  AS SET FORTH IN SECTION 5.02(d) OF THE POOLING
AND  SERVICING  AGREEMENT,  AND SHALL BE REQUIRED TO FURNISH AN AFFIDAVIT TO THE
TRANSFEROR AND THE TRUSTEE TO THE EFFECT THAT,  AMONG OTHER THINGS,  IT IS NOT A
DISQUALIFIED  ORGANIZATION,  AS SUCH TERM IS DEFINED IN CODE SECTION 860E(e)(5),
AN AGENT  (INCLUDING A BROKER,  NOMINEE OR OTHER  MIDDLEMAN)  FOR A DISQUALIFIED
ORGANIZATION OR A NON-PERMITTED FOREIGN HOLDER, AS DEFINED IN SECTION 5.02(d) OF
THE POOLING AND SERVICING AGREEMENT AND TO HAVE AGREED TO SUCH AMENDMENTS TO THE
POOLING AND  SERVICING  AGREEMENT AS MAY BE REQUIRED TO FURTHER  EFFECTUATE  THE
RESTRICTIONS  ON  TRANSFERS TO  DISQUALIFIED  ORGANIZATIONS,  AGENTS  THEREOF OR
NON-PERMITTED FOREIGN HOLDERS.

THE HOLDER OF THIS CLASS A-R  CERTIFICATE,  BY ACCEPTANCE  HEREOF,  IS DEEMED TO
HAVE  AGREED TO THE  DESIGNATION  OF THE MASTER  SERVICER AS ITS AGENT TO ACT AS
"TAX  MATTERS  PERSON" OF THE REMIC TO PERFORM THE  FUNCTIONS  OF A "TAX MATTERS
PARTNER" FOR  PURPOSES OF  SUBCHAPTER C OF CHAPTER 63 OF SUBTITLE F OF THE CODE,
OR, IF SO REQUESTED BY THE MASTER SERVICER,  TO ACT AS TAX MATTERS PERSON OF THE
REMIC.

THIS  CERTIFICATE  MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON WHICH IS
AN EMPLOYEE BENEFIT PLAN OR OTHER RETIREMENT  ARRANGEMENT  SUBJECT TO TITLE I OF
THE EMPLOYEE  RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED  ("ERISA"),  OR
SECTION 4975 OF THE CODE OR A GOVERNMENTAL  PLAN, AS DEFINED IN SECTION 3(32) OF
ERISA SUBJECT TO ANY FEDERAL, STATE OR LOCAL LAW WHICH IS, TO A MATERIAL EXTENT,
SIMILAR  TO THE  FOREGOING  PROVISIONS  OF ERISA OR THE  CODE  (COLLECTIVELY,  A
"PLAN"), OR ANY PERSON ACTING ON BEHALF OF OR INVESTING THE ASSETS OF A PLAN.



<PAGE>




                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1999-26, CLASS A-R

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R P7 8                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the  "Agreement")  among
the Seller,  Norwest Bank Minnesota,  National  Association,  as master servicer
(the  "Master  Servicer")  and  First  Union  National  Bank,  as  trustee  (the
"Trustee"),  a summary of certain of the  pertinent  provisions  of which is set
forth hereinafter.  To the extent not defined herein, the capitalized terms used
herein  have  the  meanings  ascribed  to  such  terms  in the  Agreement.  This
Certificate  is  issued  under  and is  subject  to the  terms,  provisions  and
conditions of the Agreement,  to which Agreement the Holder of this  Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and the Class A
Distribution Amount for the Class A-R Certificate  required to be distributed to
the Holder of the Class A-R Certificate on such  Distribution  Date,  subject to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the Principal  Balance of certain  Classes of Class A  Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal  will be  allocated  among the Classes of Class A  Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-R Certificate  applicable to each  Distribution  Date will be 7.250% 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 Trustee for that purpose in the notice of final distribution.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer



<PAGE>



                                   EXHIBIT B-1
                     [FORM OF FACE OF CLASS B-1 CERTIFICATE]

THIS  CERTIFICATE  IS  SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES  AND AMBAC 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 1999-26, CLASS B-1

     evidencing an interest in a pool of fixed interest rate, conventional,
   monthly pay, fully amortizing, first lien, one- to four-family residential
       mortgage loans, which may include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R P8 6                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior  rights  of the Class A  Certificates  and Ambac 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
7.250% 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 Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-1  Certificate  will be made  unless  the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999,  and based on its
issue price of 96.61306%,  including accrued  interest,  and a stated redemption
price at  maturity  equal to its  initial  principal  balance,  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 235% SPA (as defined in the Prospectus Supplement dated
November  17,  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
3.38694444%;  and  (ii)  the  annual  yield  to  maturity  of this  Certificate,
compounded  monthly,  is  approximately  7.71%.  There is no short first accrual
period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer


<PAGE>



                                   EXHIBIT B-2
                     [FORM OF FACE OF CLASS B-2 CERTIFICATE]

THIS  CERTIFICATE  IS  SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  AMBAC  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 1999-26, CLASS B-2

     evidencing an interest in a pool of fixed interest rate, conventional,
   monthly pay, fully amortizing, first lien, one- to four-family residential
       mortgage loans, which may include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R P9 4                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior  rights of the Class A  Certificates,  Ambac 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
7.250% 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 Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-2  Certificate  will be made  unless  the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999,  and based on its
issue price of 94.95306%,  including accrued  interest,  and a stated redemption
price at  maturity  equal to its  initial  principal  balance,  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 235% SPA (as defined in the Prospectus Supplement dated
November  17,  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
5.04694444%;  and  (ii)  the  annual  yield  to  maturity  of this  Certificate,
compounded  monthly,  is  approximately  7.95%.  There is no short first accrual
period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer


<PAGE>

                                   EXHIBIT B-3

                     [FORM OF FACE OF CLASS B-3 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  AMBAC,  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 1999-26, CLASS B-3

                    evidencing an interest in a pool of fixed
                    interest rate, conventional, monthly pay,
                      fully amortizing, first lien, one- to
                four-family residential mortgage loans, which may
                    include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R Q2 8                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior  rights of the Class A  Certificates,  Ambac 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
7.250% 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 Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-3  Certificate  will be made  unless  the
Holder hereof  desiring to make any such  transfer  shall deliver to the Trustee
(i) a representation letter, in the form as described in the Agreement,  stating
either  (a) that the  transferee  is not a Plan and is not acting on behalf of a
Plan or using the assets of a Plan to effect  such  purchase  or (b)  subject to
certain conditions described in the Agreement,  that the source of funds used to
purchase this Certificate is an "insurance  company general account," or (ii) if
such  transferee is a Plan, (a) an opinion of counsel  acceptable to and in form
and substance satisfactory to the Trustee and the Seller with respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999,  and based on its
issue price of 87.00306%,  including accrued  interest,  and a stated redemption
price at  maturity  equal to its  initial  principal  balance,  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 235% SPA (as defined in the Prospectus Supplement dated
November  17,  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
12.99694444%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is  approximately  9.19%.  There is no short first accrual
period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer


<PAGE>



                                   EXHIBIT B-4
                     [FORM OF FACE OF CLASS B-4 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  AMBAC, 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 1999-26, CLASS B-4

     evidencing an interest in a pool of fixed interest rate, conventional,
   monthly pay, fully amortizing, first lien, one- to four-family residential
       mortgage loans, which may include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R Q8 5                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior  rights of the Class A  Certificates,  Ambac 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
7.250% 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 Trustee for that purpose in
the notice of final distribution.

            No  transfer  of a Class B-4  Certificate  will be made  unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating either (a) that the
transferee  is not a Plan and is not  acting  on  behalf  of a Plan or using the
assets of a Plan to effect such  purchase  or (b) subject to certain  conditions
described  in the  Agreement,  that the  source of funds used to  purchase  this
Certificate  is  an  "insurance  company  general  account,"  or  (ii)  if  such
transferee  is a Plan,  (a) an opinion of counsel  acceptable to and in form and
substance  satisfactory  to the Trustee  and the Seller with  respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999,  and based on its
issue price of 70.70306%,  including accrued  interest,  and a stated redemption
price at  maturity  equal to its  initial  principal  balance,  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 235% SPA (as defined in the Prospectus Supplement dated
November  17,  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
29.29694444%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is approximately  12.33%.  There is no short first accrual
period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.



<PAGE>




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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer


<PAGE>


                                   EXHIBIT B-5
                     [FORM OF FACE OF CLASS B-5 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES, AMBAC, 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 1999-26, CLASS B-5

    evidencing  an  interest  in a pool of fixed  interest  rate,  conventional,
  monthly pay, fully amortizing, first lien, one- to four-family residential
     mortgage loans, which may include loans secured by shares issued by
                  cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R Q9 3                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior  rights of the Class A  Certificates,  Ambac 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
7.250% 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 Trustee for that purpose in the notice
of final distribution.

            No  transfer  of a Class B-5  Certificate  will be made  unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating either (a) that the
transferee  is not a Plan and is not  acting  on  behalf  of a Plan or using the
assets of a Plan to effect such  purchase  or (b) subject to certain  conditions
described  in the  Agreement,  that the  source of funds used to  purchase  this
Certificate  is  an  "insurance  company  general  account,"  or  (ii)  if  such
transferee  is a Plan,  (a) an opinion of counsel  acceptable to and in form and
substance  satisfactory  to the Trustee  and the Seller with  respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999,  and based on its
issue price of 48.12306%,  including accrued  interest,  and a stated redemption
price at  maturity  equal to its  initial  principal  balance,  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 235% SPA (as defined in the Prospectus Supplement dated
November  17,  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
51.87694444%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is approximately  19.17%.  There is no short first accrual
period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer


<PAGE>



                                   EXHIBIT B-6
                     [FORM OF FACE OF CLASS B-6 CERTIFICATE]

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES, AMBAC, 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 1999-26, CLASS B-6

     evidencing an interest in a pool of fixed interest rate, conventional,
   monthly pay, fully amortizing, first lien, one- to four-family residential
       mortgage loans, which may include loans secured by shares issued by
                    cooperative housing corporations, sold by

                      NORWEST ASSET SECURITIES CORPORATION
                (Not an interest in or obligation of the Seller)

            THIS  CERTIFICATE DOES NOT EVIDENCE AN OBLIGATION OF, OR AN INTEREST
IN, THE SELLER, THE MASTER SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES, AND
IS NOT INSURED OR GUARANTEED BY THE SELLER, THE MASTER SERVICER,  THE TRUSTEE OR
ANY OF THEIR AFFILIATES, OR BY ANY GOVERNMENT AGENCY OR PRIVATE INSURER.

            DISTRIBUTIONS  IN  REDUCTION  OF  THE  PRINCIPAL   BALANCE  OF  THIS
CERTIFICATE  WILL BE MADE IN THE MANNER  DESCRIBED IN THE POOLING AND  SERVICING
AGREEMENT. ACCORDINGLY, THE OUTSTANDING PRINCIPAL BALANCE OF THIS CERTIFICATE AT
ANY TIME MAY BE LESS THAN THE INITIAL PRINCIPAL BALANCE REPRESENTED HEREBY.

Certificate No.                            Cut-Off Date:  November 1, 1999

CUSIP No.: 66937R R2 7                     First Distribution Date: December 27,
                                           1999

Percentage Interest evidenced              Denomination:  $
by this Certificate: %

Final Scheduled Maturity Date:  December 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 November 23, 1999 (the
"Agreement") among the Seller, Norwest Bank Minnesota,  National Association, as
master  servicer  (the "Master  Servicer")  and First Union  National  Bank,  as
trustee (the  "Trustee"),  a summary of certain of the  pertinent  provisions of
which  is  set  forth  hereinafter.  To  the  extent  not  defined  herein,  the
capitalized  terms used herein have the  meanings  ascribed to such terms in the
Agreement.  This  Certificate  is issued  under  and is  subject  to the  terms,
provisions  and conditions of the  Agreement,  to which  Agreement the Holder of
this  Certificate by virtue of the  acceptance  hereof assents and by which such
Holder is bound.

            Pursuant to the terms of the Agreement,  a distribution will be made
on the 25th day of each  month or, if such 25th day is not a Business  Day,  the
Business Day immediately following (the "Distribution Date"),  commencing on the
first  Distribution  Date  specified  above,  to the  Person in whose  name this
Certificate  is  registered at the close of business on the last Business Day of
the month  preceding the month of such  distribution,  in an amount equal to the
product of the Percentage Interest evidenced by this Certificate and, subject to
the prior  rights of the Class A  Certificates,  Ambac 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
7.250% 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 Trustee for that purpose in the notice
of final distribution.

            No  transfer  of a Class B-6  Certificate  will be made  unless such
transfer is exempt from the  registration  requirements of the Securities Act of
1933,  as  amended,  and  any  applicable  state  securities  laws or is made in
accordance  with said Act and laws. In the event that such a transfer is desired
to be made by the Holder hereof,  (i) the transferee will be required to execute
an  investment  letter in the form  described in the  Agreement and (ii) if such
transfer  is to be made  within  three  years  from the later of (a) the date of
initial issuance of the Certificates or (b) the last date on which the Seller or
any  affiliate  thereof  was  a  Holder  of  the  Certificates  proposed  to  be
transferred,  and unless  such  transfer is made in reliance on Rule 144A of the
Securities  Act of 1933,  as amended,  the Trustee or the Seller may require the
Holder to deliver an opinion of counsel  acceptable to and in form and substance
satisfactory  to the  Trustee  and the  Seller  that  such  transfer  is  exempt
(describing  the applicable  exemption and the basis  therefor) from or is being
made pursuant to the registration requirements of the Securities Act of 1933, as
amended,  and of any applicable statute of any state. The Holder hereof desiring
to effect such transfer shall,  and does hereby agree to, indemnify the Trustee,
the Seller,  the Master  Servicer,  and any Paying Agent acting on behalf of the
Trustee  against any liability  that may result if the transfer is not so exempt
or is not made in  accordance  with such Federal and state laws.  In  connection
with any such  transfer,  the Trustee  will also  require  (i) a  representation
letter,  in the form as described in the Agreement,  stating either (a) that the
transferee  is not a Plan and is not  acting  on  behalf  of a Plan or using the
assets of a Plan to effect such  purchase  or (b) subject to certain  conditions
described  in the  Agreement,  that the  source of funds used to  purchase  this
Certificate  is  an  "insurance  company  general  account,"  or  (ii)  if  such
transferee  is a Plan,  (a) an opinion of counsel  acceptable to and in form and
substance  satisfactory  to the Trustee  and the Seller with  respect to certain
matters and (b) such other  documentation  as the Seller or the Master  Servicer
may require, as described in the Agreement.

            Reference  is  hereby  made  to  the  further   provisions  of  this
Certificate set forth on the reverse hereof,  which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This  Certificate  is issued on November 23, 1999,  and based on its
issue price of 17.94306%,  including accrued  interest,  and a stated redemption
price at  maturity  equal to its  initial  principal  balance,  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 235% SPA (as defined in the Prospectus Supplement dated
November  17,  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
82.05694444%;  and  (ii)  the  annual  yield to  maturity  of this  Certificate,
compounded  monthly,  is approximately  47.70%.  There is no short first accrual
period.

            This Certificate  constitutes a "regular interest" in a "real estate
mortgage  investment  conduit" as those terms are defined in Section  860G(a)(1)
and  Section  860D,  respectively,  of the  Internal  Revenue  Code of 1986,  as
amended.

            Unless this  Certificate  has been  countersigned  by an  authorized
officer of the  Trustee,  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.




<PAGE>





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

Dated:



                                       First Union National Bank,
                                            Trustee



                                       By____________________________
                                            Authorized Officer

Countersigned:

First Union National Bank,
  Trustee

By ________________________
   Authorized Officer



<PAGE>


                                    EXHIBIT C

               [Form of Reverse of Series 1999-26 Certificates]

                      NORWEST ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1999-26

            This  Certificate is one of a duly authorized  issue of Certificates
issued in several Classes  designated as Mortgage  Pass-Through  Certificates of
the Series specified hereon (herein collectively called the "Certificates").

            The  Certificates  are  limited  in  right  of  payment  to  certain
collections  and  recoveries   respecting  the  Mortgage  Loans,   all  as  more
specifically  set forth  herein  and in the  Agreement.  In the event  funds are
advanced with respect to any Mortgage Loan by a Servicer, the Master Servicer or
the  Trustee,  such  advances  are  reimbursable  to such  Servicer,  the Master
Servicer or the Trustee to the extent  provided in the  Agreement,  from related
recoveries  on such  Mortgage  Loan or from  other  cash  that  would  have been
distributable to Certificateholders.

            As  provided  in the  Agreement,  withdrawals  from the  Certificate
Account created for the benefit of Certificateholders  may be made by the Master
Servicer  from  time  to  time  for  purposes   other  than   distributions   to
Certificateholders,  such purposes  including  reimbursement to a Servicer,  the
Master  Servicer  or the  Trustee,  as  applicable,  of  advances  made  by such
Servicer, the Master Servicer or the Trustee.

            The Agreement permits, with certain exceptions therein provided, the
amendment of the Agreement and the modification of the rights and obligations of
the  Seller,  the  Master  Servicer  and  the  Trustee  and  the  rights  of the
Certificateholders  under the  Agreement  at any time by the Seller,  the Master
Servicer  and the  Trustee  with the  consent  of the  Holders  of  Certificates
evidencing  in the  aggregate  not less than 66 2/3% of the Voting  Interests of
each Class of Certificates  affected thereby.  Any such consent by the Holder of
this  Certificate  shall be  conclusive  and binding on such Holder and upon all
future  holders  of this  Certificate  and of any  Certificate  issued  upon the
transfer  hereof or in exchange hereof or in lieu hereof whether or not notation
of such consent is made upon the  Certificate.  The  Agreement  also permits the
amendment thereof in certain circumstances without the consent of the Holders of
any of the Certificates.

            As provided  in the  Agreement  and  subject to certain  limitations
therein  set forth,  the  transfer of this  Certificate  is  registrable  in the
Certificate  Register upon surrender of this  Certificate  for  registration  of
transfer at the office or agency appointed by the Trustee,  duly endorsed by, or
accompanied  by an assignment  in the form below or other written  instrument of
transfer in form satisfactory to the Trustee and the Certificate Registrar, duly
executed by the Holder  hereof or such  Holder's  attorney  duly  authorized  in
writing, and thereupon one or more new Certificates of authorized  Denominations
evidencing  the same Class and aggregate  Percentage  Interest will be issued to
the designated transferee or transferees.

            The  Certificates  are  issuable  only  as  registered  Certificates
without  coupons in Classes and  Denominations  specified in the  Agreement.  As
provided in the Agreement and subject to certain  limitations therein set forth,
Certificates are  exchangeable for new Certificates of authorized  Denominations
evidencing the same Class and aggregate Percentage Interest, as requested by the
Holder surrendering the same.

            No service charge will be made for any such registration of transfer
or exchange, but the Trustee or the Certificate Registrar may require payment of
a sum  sufficient  to cover  any tax or other  governmental  charge  payable  in
connection therewith.

            The Seller,  the Master  Servicer,  the Trustee and the  Certificate
Registrar,  and any agent of the Seller, the Master Servicer, the Trustee or the
Certificate  Registrar,  may treat the Person in whose name this  Certificate is
registered  as the owner hereof for all  purposes,  and neither the Seller,  the
Master Servicer, the Trustee, the Certificate Registrar nor any such agent shall
be affected by notice to the contrary.

            The  obligations   created  by  the  Agreement  in  respect  of  the
Certificates  and the Trust Estate created thereby shall terminate upon the last
action  required  to be taken by the  Trustee  on the  Final  Distribution  Date
pursuant  to the  Agreement  following  the  earlier of (i) the payment or other
liquidation (or advance with respect  thereto) of the last Mortgage Loan subject
thereto or the disposition of all property  acquired upon foreclosure or deed in
lieu of  foreclosure  of any Mortgage  Loan, and (ii) the purchase by the Seller
from the Trust Estate of all remaining  Mortgage Loans and all property acquired
in respect of such Mortgage Loans; provided, however, that the Trust Estate will
in no event  continue  beyond the  expiration  of 21 years from the death of the
last survivor of the  descendants of Joseph P. Kennedy,  the late  ambassador of
the  United  States  to the  Court  of St.  James,  living  on the  date  of the
Agreement.  The Agreement permits,  but does not require, the Seller to purchase
all  remaining  Mortgage  Loans and all  property  acquired  in  respect  of any
Mortgage Loan at a price  determined as provided in the Agreement.  The exercise
of such option will effect early  retirement of the  Certificates,  the Seller's
right to exercise  such option  being  subject to the Pool  Scheduled  Principal
Balance  of the  Mortgage  Loans as of the  Distribution  Date  upon  which  the
proceeds of such repurchase are  distributed  being less than ten percent of the
Cut-Off Date Aggregate Principal Balance.


<PAGE>


                                   ASSIGNMENT

FOR VALUE RECEIVED, the undersigned  hereby sell(s),  assign(s) and  transfer(s)
unto ___________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
                   (Please print or typewrite name and address
                     including postal zip code of assignee)

the  beneficial   interest   evidenced  by  the  within  Mortgage   Pass-Through
Certificate and hereby  authorizes the transfer of registration of such interest
to assignee on the Certificate Register of the Trust Estate.

            I (We)  further  direct  the  Certificate  Registrar  to issue a new
Certificate  of a like  Denomination  or Percentage  Interest and Class,  to the
above named assignee and deliver such Certificate to the following address:

_______________________________________________________
_______________________________________________________

Social Security or other Identifying Number of Assignee:
_______________________________________________________

Dated:



                                       ___________________________________
                                          Signature by or on behalf of
                                          assignor



                                       ___________________________________
                                          Signature Guaranteed




<PAGE>



                            DISTRIBUTION INSTRUCTIONS

            The  assignee   should   include  the   following  for  purposes  of
distribution:

            Distributions  shall be made, if the assignee is eligible to receive
distributions in immediately available funds, by wire transfer or otherwise,  in
immediately available funds to _________________________________________________
for the account of  ___________________________________________________  account
number ________________________________________________, or, if mailed by check,
to    ___________________________________________________________.    Applicable
statements   should  be  mailed  to   __________________________________________
____________________________________________________.


            This information is provided by ______________________, the assignee
named above, or ___________________________________, as its agent.


<PAGE>





                                    EXHIBIT D

                                    RESERVED


<PAGE>


                                    EXHIBIT E

                               CUSTODIAL AGREEMENT

            THIS CUSTODIAL  AGREEMENT (as amended and supplemented  from time to
time,  the  "Agreement"),  dated as of  _____________,  by and among FIRST UNION
NATIONAL BANK, not individually, but solely as Trustee (including its successors
under the Pooling and Servicing Agreement defined below, the "Trustee"), NORWEST
ASSET  SECURITIES  CORPORATION  (together  with any  successor in interest,  the
"Seller"),  NORWEST BANK  MINNESOTA,  NATIONAL  ASSOCIATION  (together  with any
successor in interest or  successor  under the Pooling and  Servicing  Agreement
referred  to  below,  the  "Master  Servicer")  and  ___________________________
(together with any successor in interest or any successor  appointed  hereunder,
the "Custodian").

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

            WHEREAS,  the Seller,  the Master  Servicer  and the  Trustee,  have
entered  into a Pooling and  Servicing  Agreement  dated as of November 23, 1999
relating to the issuance of Mortgage Pass-Through  Certificates,  Series 1999-26
(as in effect on the date of this Agreement, the "Original Pooling and Servicing
Agreement",  and as amended and supplemented from time to time, the "Pooling and
Servicing Agreement"); and

            WHEREAS,  the  Custodian  has agreed to act as agent for the Trustee
for  the  purposes  of  receiving  and  holding  certain   documents  and  other
instruments  delivered by the Seller under the Pooling and Servicing  Agreement,
all upon the terms and conditions and subject to the limitations hereinafter set
forth;

            NOW,  THEREFORE,  in  consideration  of the  premises and the mutual
covenants and agreements  hereinafter set forth,  the Trustee,  the Seller,  the
Master Servicer and the Custodian hereby agree as follows:
ARTICLE I

                                   DEFINITIONS

            Capitalized  terms used in this  Agreement  and not  defined  herein
shall  have  the  meanings  assigned  in  the  Original  Pooling  and  Servicing
Agreement, unless otherwise required by the context herein.
ARTICLE II

                          CUSTODY OF MORTGAGE DOCUMENTS

            Section  2.1.  Custodian  to Act as Agent;  Acceptance  of Custodial
Files.  The  Custodian,  as the duly  appointed  agent of the  Trustee for these
purposes,  acknowledges  receipt  of the  Mortgage  Notes,  the  Mortgages,  the
assignments and other documents relating to the Mortgage Loans identified on the
schedule  attached hereto and declares that it holds and will hold such Mortgage
Notes,  Mortgages,  assignments  and other  documents and any similar  documents
received by the Trustee subsequent to the date hereof (the "Custodial Files") as
agent for the  Trustee,  in trust,  for the use and  benefit of all  present and
future Certificateholders.

            Section 2.2.  Recordation  of  Assignments.  If any  Custodial  File
includes one or more  assignments  to the Trustee of Mortgage  Notes and related
Mortgages that have not been recorded,  each such assignment  shall be delivered
by  the  Custodian  to  the  Seller  for  the  purpose  of  recording  it in the
appropriate  public  office for real  property  records,  and the Seller,  at no
expense to the Custodian, shall promptly cause to be recorded in the appropriate
public office for real property  records each such  assignment and, upon receipt
thereof  from such  public  office,  shall  return each such  assignment  to the
Custodian.

            Section 2.3. Review of Custodial  Files. The Custodian  agrees,  for
the benefit of Certificateholders,  to review, in accordance with the provisions
of Section 2.01 of the Pooling and Servicing Agreement,  each Custodial File. If
in performing  the review  required by this Section 2.3 the Custodian  finds any
document or documents  constituting  a part of a Custodial File to be missing or
defective in any material  respect,  the Custodian  shall promptly so notify the
Seller, the Master Servicer and the Trustee.

            Section  2.4.   Notification  of  Breaches  of  Representations  and
Warranties. Upon discovery by the Custodian of a breach of any representation or
warranty  made by the Seller or the Master  Servicer as set forth in the Pooling
and Servicing  Agreement,  the Custodian shall give prompt written notice to the
Seller,  the Master  Servicer and the Trustee.

            Section 2.5.  Custodian to  Cooperate;  Release of Custodial  Files.
Upon the  payment in full of any  Mortgage  Loan,  or the  receipt by the Master
Servicer  of a  notification  that  payment in full will be escrowed in a manner
customary for such purposes,  the Master Servicer shall  immediately  notify the
Custodian by a certification  (which  certification shall include a statement to
the effect that all amounts  received or to be received in connection  with such
payment which are required to be deposited in the Certificate  Account  pursuant
to Section 3.02 of the Pooling and Servicing  Agreement  have been or will be so
deposited)  of a  Servicing  Officer  and shall  request  delivery  to it of the
Custodial File. The Custodian  agrees,  upon receipt of such  certification  and
request, promptly to release the related Custodial File to the Master Servicer.

            From time to time as is appropriate for the servicing or foreclosure
of any Mortgage  Loan,  the Master  Servicer  shall  deliver to the  Custodian a
certificate of a Servicing  Officer  requesting  that  possession of all, or any
document  constituting  part of, the  Custodial  File be  released to the Master
Servicer and  certifying as to the reason for such release and that such release
will not invalidate any insurance  coverage  provided in respect of the Mortgage
Loan. With such certificate,  the Master Servicer shall deliver to the Custodian
a receipt signed by a Servicing  Officer on behalf of the Master  Servicer,  and
upon receipt of the foregoing, the Custodian shall deliver the Custodial File or
such  document  to the Master  Servicer.  The Master  Servicer  shall cause each
Custodial  File or any  document  therein  so  released  to be  returned  to the
Custodian when the need therefor by the Master Servicer no longer exists, unless
(i) the Mortgage Loan has been liquidated and the Liquidation  Proceeds relating
to the  Mortgage  Loan have been  deposited  in the  Certificate  Account to the
extent  required by the Pooling and  Servicing  Agreement or (ii) the  Custodial
File or such document has been delivered to an attorney,  or to a public trustee
or other  public  official as required by law,  for  purposes of  initiating  or
pursuing legal action or other  proceedings for the foreclosure of the Mortgaged
Property  either  judicially  or  non-judicially,  and the Master  Servicer  has
delivered to the Custodian a certificate of a Servicing Officer certifying as to
the name and address of the Person to which such Custodial File or such document
were delivered and the purpose or purposes of such delivery. In the event of the
liquidation of a Mortgage  Loan,  the Custodian  shall deliver such receipt with
respect thereto to the Master  Servicer upon deposit of the related  Liquidation
Proceeds in the  Certificate  Account to the extent  required by the Pooling and
Servicing Agreement.

            Section 2.6. Assumption Agreements. In the event that any assumption
agreement or substitution of liability agreement is entered into with respect to
any Mortgage  Loan subject to this  Agreement in  accordance  with the terms and
provisions of the Pooling and Servicing  Agreement,  the Master  Servicer  shall
notify the Custodian  that such  assumption or  substitution  agreement has been
completed by  forwarding  to the  Custodian  the original of such  assumption or
substitution agreement,  which copy shall be added to the related Custodial File
and, for all purposes,  shall be considered a part of such Custodial File to the
same extent as all other documents and instruments  constituting  parts thereof.


                                  ARTICLE III

                            CONCERNING THE CUSTODIAN

            Section  3.1.  Custodian  a Bailee  and Agent of the  Trustee.  With
respect to each Mortgage Note,  Mortgage and other documents  constituting  each
Custodian  File  which  are  delivered  to  the  Custodian,   the  Custodian  is
exclusively  the bailee and agent of the Trustee,  holds such  documents for the
benefit of  Certificateholders  and  undertakes  to perform such duties and only
such  duties  as are  specifically  set  forth in this  Agreement.  Except  upon
compliance  with the  provisions of Section 2.5 of this  Agreement,  no Mortgage
Note,  Mortgage or other document  constituting a part of a Custodial File shall
be delivered by the Custodian to the Seller or the Master  Servicer or otherwise
released     from    the     possession     of    the     Custodian.

            Section 3.2. Indemnification.  The Seller hereby agrees to indemnify
and hold the  Custodian  harmless  from and  against  all  claims,  liabilities,
losses,  actions,  suits  or  proceedings  at law  or in  equity,  or any  other
expenses,  fees or charges of any  character or nature,  which the Custodian may
incur or with which the  Custodian may be threatened by reasons of its acting as
custodian  under this  Agreement,  including  indemnification  of the  Custodian
against  any and all  expenses,  including  attorney's  fees if counsel  for the
Custodian has been approved by the Seller, and the cost of defending any action,
suit or proceedings or resisting any claim. Notwithstanding the foregoing, it is
specifically  understood and agreed that in the event any such claim, liability,
loss,  action,  suit or proceeding or other expense,  fees, or charge shall have
been caused by reason of any negligent act, negligent failure to act, or willful
misconduct  on the part of the  Custodian,  or which shall  constitute a willful
breach of its duties hereunder, the indemnification provisions of this Agreement
shall not apply.

            Section 3.3.  Custodian May Own  Certificates.  The Custodian in its
individual or any other capacity may become the owner or pledgee of Certificates
with  the  same  rights  it  would  have  if  it  were  not  Custodian.

            Section 3.4. Master  Servicer to Pay Custodian's  Fees and Expenses.
The Master  Servicer  covenants and agrees to pay to the Custodian  from time to
time, and the Custodian shall be entitled to,  reasonable  compensation  for all
services rendered by it in the exercise and performance of any of the powers and
duties hereunder of the Custodian, and the Master Servicer will pay or reimburse
the Custodian upon its request for all reasonable  expenses,  disbursements  and
advances  incurred  or made  by the  Custodian  in  accordance  with  any of the
provisions of this  Agreement  (including the  reasonable  compensation  and the
expenses and  disbursements  of its counsel and of all persons not  regularly in
its employ), except any such expense,  disbursement or advance as may arise from
its negligence or bad faith.

            Section 3.5. Custodian May Resign; Trustee May Remove Custodian. The
Custodian may resign from the  obligations  and duties hereby imposed upon it as
such  obligations  and duties  relate to its acting as Custodian of the Mortgage
Loans. Upon receiving such notice of resignation,  the Trustee shall either take
custody of the  Custodial  Files  itself and give prompt  notice  thereof to the
Seller,  the Master  Servicer and the Custodian or promptly  appoint a successor
Custodian by written  instrument,  in  duplicate,  one copy of which  instrument
shall be  delivered to the  resigning  Custodian  and one copy to the  successor
Custodian.  If the Trustee shall not have taken  custody of the Custodial  Files
and no  successor  Custodian  shall  have been so  appointed  and have  accepted
resignation,  the  resigning  Custodian  may  petition  any  court of  competent
jurisdiction for the appointment of a successor Custodian.

            The Trustee may remove the Custodian at any time. In such event, the
Trustee shall appoint, or petition a court of competent jurisdiction to appoint,
a successor Custodian  hereunder.  Any successor Custodian shall be a depository
institution  subject to supervision or examination by federal or state authority
and shall be able to satisfy the other requirements contained in Section 3.7.

            Any  resignation  or removal of the Custodian and  appointment  of a
successor  Custodian pursuant to any of the provisions of this Section 3.5 shall
become effective upon acceptance of appointment by the successor Custodian.  The
Trustee  shall give prompt  notice to the Seller and the Master  Servicer of the
appointment of any successor  Custodian.  No successor Custodian shall have been
appointed and accepted  appointment by the Trustee without the prior approval of
the Seller and the Master Servicer.

            Section 3.6. Merger or Consolidation  of Custodian.  Any Person into
which  the  Custodian  may be  merged  or  converted  or  with  which  it may be
consolidated,   or  any  Person   resulting  from  any  merger,   conversion  or
consolidation to which the Custodian shall be a party, or any Person  succeeding
to the  business  of the  Custodian,  shall be the  successor  of the  Custodian
hereunder,  without the  execution  or filing of any paper or any further act on
the  part  of  any  of the  parties  hereto,  anything  herein  to the  contrary
notwithstanding.

            Section 3.7.  Representations of the Custodian. The Custodian hereby
represents  that  it is a  depository  institution  subject  to  supervision  or
examination by a federal or state authority,  has a combined capital and surplus
of at least  $10,000,000 and is qualified to do business in the  jurisdiction in
which it will hold any Custodian File. ARTICLE IV

                            MISCELLANEOUS PROVISIONS

            Section 4.1. Notices.  All notices,  requests,  consents and demands
and other communications  required under this Agreement or pursuant to any other
instrument  or document  delivered  hereunder  shall be in writing  and,  unless
otherwise  specifically  provided,  may be delivered personally,  by telegram or
telex,  or by registered or certified  mail,  postage  prepaid,  return  receipt
requested,  at the  addresses  specified on the  signature  page hereof  (unless
changed by the particular party whose address is stated herein by similar notice
in writing),  in which case the notice will be deemed  delivered  when received.

            Section  4.2.  Amendments.   No  modification  or  amendment  of  or
supplement to this Agreement  shall be valid or effective  unless the same is in
writing and signed by all  parties  hereto,  and neither the Seller,  the Master
Servicer  nor the  Trustee  shall  enter  into any  amendment  hereof  except as
permitted by the Pooling and Servicing Agreement.  The Trustee shall give prompt
notice to the  Custodian  of any  amendment  or  supplement  to the  Pooling and
Servicing  Agreement  and furnish the  Custodian  with written  copies  thereof.

            SECTION  4.3.  GOVERNING  LAW.  THIS  AGREEMENT  SHALL  BE  DEEMED A
CONTRACT MADE UNDER THE LAWS OF THE STATE OF NEW YORK AND SHALL BE CONSTRUED AND
ENFORCED IN  ACCORDANCE  WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK.

            Section 4.4.  Recordation of Agreement.  To the extent  permitted by
applicable  law, this  Agreement is subject to  recordation  in all  appropriate
public offices for real property records in all the counties or other comparable
jurisdictions in which any or all of the properties subject to the Mortgages are
situated,  and in any other  appropriate  public  recording office or elsewhere,
such  recordation  to be effected by the Master  Servicer  and at its expense on
direction by the Trustee,  but only upon direction  accompanied by an Opinion of
Counsel to the effect that such recordation  materially and beneficially affects
the interests of the Certificateholders.

            For the purpose of facilitating the recordation of this Agreement as
herein  provided  and  for  other  purposes,  this  Agreement  may  be  executed
simultaneously in any number of counterparts,  each of which  counterparts shall
be deemed to be an original,  and such counterparts shall constitute but one and
the same instrument.

            Section 4.5.  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:___________________________

                                           [CUSTODIAN]
Address:
                                           By:______________________________
                                           Name:____________________________
                                           Title:___________________________







<PAGE>






STATE OF                )
                        )  ss.:
COUNTY OF               )




            On this ____ day of _________,  19__,  before me, a notary public in
and for the State of ____________, personally appeared _______________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________________;   that  he  is  the   __________  of  Norwest  Asset
Securities Corporation a Delaware corporation,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said corporation.



                                      __________________________________________
                                       Notary Public

[NOTARIAL SEAL]





<PAGE>






STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ____ day of _________,  19__,  before me, a notary public in
and for the State of ____________, personally appeared _______________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________________; that he is the __________ of Norwest Bank Minnesota,
National  Association,  a national banking association,  one of the parties that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.



                                      __________________________________________
                                       Notary Public

[NOTARIAL SEAL]



<PAGE>






STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ___ day of ________, 19__, before me, a notary public in and
for the State of ____________,  personally appeared __________ _________,  known
to me who,  being  by me duly  sworn,  did  depose  and say that he  resides  at
__________________________;  that he is the  ____________________ of First Union
National Bank, a national banking association,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said association.


                                      __________________________________________
                                       Notary Public

[NOTARIAL SEAL]



<PAGE>






STATE OF                )
                        )  ss.:
COUNTY OF               )


            On this ____ day of ________, 19 , before me, a notary public in and
for the State of __________, personally appeared __________ __________, known to
me  who,  being  by me duly  sworn,  did  depose  and say  that  he  resides  at
__________________________;   that   he  is   the   _______________________   of
______________________,  a  _________________________,  one of the parties  that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said association.



                                      __________________________________________
                                       Notary Public

[NOTARIAL SEAL]


<PAGE>



                                   EXHIBIT F-1


           [Schedule of Mortgage Loans Serviced by Norwest Mortgage
                from locations other than Frederick, Maryland]


<TABLE>
NASCOR
NMI / 1999-26  Exhibit F-1
30 YEAR FIXED RATE NON RELOCATION  LOANS
<CAPTION>


NUMBER         CITY                        STATE     CODE     TYPE      RATE       RATE         PAYMENT       MATURITY
- --------       -----------------------------------------------------  --------   --------     ----------      --------
<S>           <C>                          <C>    <C>       <C>       <C>       <C>         <C>                <C>
4000439        TULSA                         OK     74114     SFD       7.375     7.108       $ 3,453.38         360
6390726        PLYMOUTH                      MN     55446     SFD       7.500     7.233       $ 2,038.41         360
6467217        STILLWATER                    MN     55082     SFD       7.625     7.250       $ 1,727.02         360
6629030        SAVAGE                        MN     55378     SFD       7.500     7.233       $ 1,901.86         360
6635594        EDINA                         MN     55439     SFD       7.625     7.250       $ 1,726.31         360
6671484        MINNETONKA                    MN     55345     SFD       7.375     7.108       $ 2,297.88         360
6733509        GLENVIEW                      IL     60025     SFD       7.500     7.233       $ 2,067.58         360
6753876        CRYSTAL LAKE                  IL     60014     SFD       7.250     6.983       $ 1,835.05         360
6952712        NORTHBROOK                    IL     60062     SFD       7.375     7.108       $ 2,072.03         360
7031431        DOWNERS GROVE                 IL     60515     SFD       7.250     6.983       $ 1,930.56         360
7103211        CRETE                         IL     60417     SFD       7.250     6.983       $ 1,705.44         360
7103606        BARRINGTON                    IL     60010     SFD       7.375     7.108       $ 2,434.63         360
7137064        WINNETKA                      IL     60093     SFD       7.250     6.983       $ 2,046.53         360
7187674        RIVER FOREST                  IL     60305     SFD       7.375     7.108       $ 2,362.11         360
7230106        CINCINNATI                    OH     45208     SFD       7.250     6.983       $ 2,714.38         360
7231126        MAPLE GROVE                   MN     55311     SFD       7.250     6.983       $ 1,964.67         360
7235754        CRYSTAL LAKE                  IL     60014     SFD       7.125     6.858       $ 1,825.78         360
7281540        NORTH OAKS                    MN     55127     SFD       7.000     6.733       $ 2,115.66         360
7282892        MINNEAPOLIS                   MN     55409     SFD       7.375     7.108       $ 1,933.20         360
7291912        CHASKA                        MN     55318     SFD       7.375     7.108       $ 1,909.38         360
7292148        LIBERTYVILLE                  IL     60048     SFD       7.000     6.733       $ 3,858.75         360
7292815        LISLE                         IL     60532     SFD       7.000     6.733       $ 2,528.15         360
7297394        LAKE BARRINGTON               IL     60010     SFD       7.500     7.233       $ 4,374.29         360
7313741        GROSSE POINTE PAR             MI     48230     SFD       7.000     6.733       $ 2,661.21         360
7327736        GLEN ELLYN                    IL     60137     SFD       7.125     6.858       $ 2,095.26         360
7347255        NORTHBROOK                    IL     60062     PUD       7.125     6.858       $ 2,694.87         360
7347271        HAWTHORN WOODS                IL     60047     PUD       7.125     6.858       $ 2,088.53         360
7350668        CHANHASSEN                    MN     55317     SFD       7.375     7.108       $ 2,415.92         360
7350711        VICTORIA                      MN     55386     SFD       7.375     7.108       $ 1,933.90         360
7351090        GLENVIEW                      IL     60025     SFD       7.125     6.858       $ 2,755.51         360
7351717        CHICAGO                       IL     60657     SFD       7.000     6.733       $ 2,062.44         360
7351719        OAK PARK                      IL     60302     SFD       7.000     6.733       $ 2,328.56         360
7361015        ST CHARLES                    IL     60174     SFD       6.875     6.608       $ 2,167.87         360
7364942        GLENVIEW                      IL     60025     SFD       7.125     6.858       $ 1,751.67         360
7381016        WACONIA                       MN     55387     SFD       7.125     6.858       $ 2,189.59         360
7381520        SHOREWOOD                     MN     55331     SFD       6.875     6.608       $ 2,147.50         360
7382311        GLEN ELLYN                    IL     60137     PUD       7.250     6.983       $ 2,319.40         360
7386478        ACTON                         MA     01720     SFD       7.000     6.733       $ 1,829.59         360
7388037        FOX POINT                     WI     53217     SFD       7.000     6.733       $ 2,860.81         360
7403352        BIRMINGHAM                    AL     35223     SFD       7.000     6.733       $ 2,661.21         360
7403391        SPOKANE                       WA     99208     SFD       7.000     6.733       $ 2,594.68         360
7418208        LONG GROVE                    IL     60047     SFD       7.000     6.733       $ 1,846.21         360
7432601        KILDEER                       IL     60047     SFD       7.500     7.233       $ 2,153.58         360
7452458        CHICAGO                       IL     60613     SFD       7.750     7.250       $ 2,062.55         360
7458113        SHELBY TWP                    MI     48316     SFD       7.625     7.250       $ 1,734.09         360
7472599        DECATUR                       MI     49045     SFD       7.750     7.250       $ 2,507.45         360
7477933        SHOREVIEW                     MN     55126     SFD       7.125     6.858       $ 4,305.06         360
7478390        DEERFIELD                     IL     60015     SFD       7.250     6.983       $ 3,883.29         360
7485999        INDIAN HEAD PARK              IL     60525     SFD       7.250     6.983       $ 2,346.69         360
7504636        MINNETONKA                    MN     55345     SFD       7.500     7.233       $ 2,006.75         360
7516121        LAKE FOREST                   IL     60045     SFD       7.125     6.858       $ 2,277.17         360
7516973        BLVD ST PAUL                  MN     55104     SFD       7.000     6.733       $ 4,237.98         360
7520774        GURNEE                        IL     60031     SFD       7.375     7.108       $ 1,754.31         360
7523842        CHICAGO                       IL     60610     LCO       7.250     6.983       $ 2,984.52         360
7527228        VICTORIA                      MN     55386     SFD       7.000     6.733       $ 2,228.76         360
7532856        NAPERVILLE                    IL     60564     SFD       7.250     6.983       $ 2,114.75         360
7534102        CHICAGO                       IL     60616     SFD       7.375     7.108       $ 1,870.00         360
7537795        MARTINSVILLE                  IN     46151     SFD       7.375     7.108       $ 2,044.40         360
7537990        WINFIELD                      IL     60190     SFD       7.250     6.983       $ 1,794.13         360
7539662        PRIOR LAKE                    MN     55372     SFD       7.500     7.233       $ 2,723.44         360
7544567        NORTHFIELD                    MN     55057     SFD       7.125     6.858       $ 2,021.16         360
7552656        INVER GROVE HTS               MN     55077     SFD       7.125     6.858       $ 2,236.41         360
7553170        BAYTOWN TOWNSHIP              MN     55082     SFD       7.375     7.108       $ 1,944.94         360
7558417        SIOUX FALLS                   SD     57108     SFD       7.000     6.733       $ 2,616.63         360
7565114        ROCHESTER                     MI     48306     SFD       7.250     6.983       $ 2,899.25         360
7566957        EDINA                         MN     55439     SFD       7.000     6.733       $ 2,160.90         360
7574400        RIVER FOREST                  IL     60305     SFD       7.000     6.733       $ 1,929.38         360
7576750        CHICAGO                       IL     60613     SFD       7.000     6.733       $ 3,366.43         360
7577530        SPRING GROVE                  IL     60081     SFD       7.000     6.733       $ 2,328.56         360
7582559        GRANT                         MN     55110     SFD       7.125     6.858       $ 3,368.60         360
7582780        BARRINGTON                    IL     60010     SFD       7.250     6.983       $ 2,019.24         360
7586065        PHOENIXVILLE                  PA     19460     SFD       6.500     6.233       $ 2,127.54         360
7589090        NORTHBROOK                    IL     60062     SFD       7.125     6.858       $ 1,819.04         360
7589374        RIVER FOREST                  IL     60305     SFD       7.000     6.733       $ 1,995.91         360
7589429        EDEN PRAIRIE                  MN     55347     SFD       7.500     7.233       $ 2,497.80         300
7591570        NORTHBROOK                    IL     60062     SFD       7.125     6.858       $ 2,964.36         360
7592594        SAINT PAUL                    MN     55105     SFD       7.250     6.983       $ 2,264.83         360
7594551        ORLAND PARK                   IL     60467     SFD       7.000     6.733       $ 1,829.58         360
7600902        TEMECULA                      CA     92592     SFD       7.875     7.250       $ 2,099.80         360
7606699        INVERNESS                     IL     60067     SFD       7.250     6.983       $ 2,346.69         360
7606744        WAUCONDA                      IL     60084     SFD       7.500     7.233       $ 1,748.04         360
7607253        NORTHBROOK                    IL     60062     SFD       7.000     6.733       $ 2,800.92         360
7609372        PLYMOUTH                      MN     55441     SFD       7.250     6.983       $ 1,931.24         360
7610321        NAPERVILLE                    IL     60564     SFD       7.125     6.858       $ 2,526.44         360
7612191        PARK RIDGE                    IL     60068     SFD       6.875     6.608       $ 2,029.91         360
7616610        EVANSTON                      IL     60201     SFD       6.625     6.358       $ 2,138.64         360
7620900        HASTINGS                      MN     55033     SFD       7.000     6.733       $ 2,120.99         360
7621135        MINNEAPOLIS                   MN     55409     SFD       7.125     6.858       $ 1,912.01         360
7625083        WHEATON                       IL     60187     SFD       7.125     6.858       $ 2,324.33         360
7626254        EDEN PRAIRIE                  MN     55347     SFD       7.000     6.733       $ 2,448.31         360
7630159        PLYMOUTH                      MN     55446     SFD       6.375     6.108       $ 1,622.06         360
7639586        NORTHFIELD                    MN     55057     SFD       7.000     6.733       $ 2,425.03         360
7642750        ARLINGTON HEIGHTS             IL     60005     PUD       7.375     7.108       $ 1,878.64         360
7643591        ST CHARLES                    IL     60174     PUD       7.125     6.858       $ 2,046.42         360
7646402        OAK PARK                      IL     60302     SFD       7.125     6.858       $ 2,694.87         360
7652223        GREENFIELD                    MN     55357     SFD       7.375     7.108       $ 2,348.30         360
7657715        MINNETRISTA                   MN     55364     SFD       7.250     6.983       $ 2,974.29         360
7670417        VERNON HILLS                  IL     60061     PUD       7.125     6.858       $ 1,751.67         360
7671831        LEMONT                        IL     60439     SFD       7.250     6.983       $ 1,718.41         360
7679625        CARY                          IL     60013     SFD       7.375     7.108       $ 2,223.97         360
7683779        BAYTOWN TOWNSHIP              MN     55082     SFD       7.125     6.858       $ 2,597.26         360
7726258        CHICAGO                       IL     60622     LCO       7.375     7.108       $ 1,928.37         360

</TABLE>

<TABLE>

NASCOR
NMI / 1999-26  Exhibit F-1
30 YEAR FIXED RATE NON RELOCATION  LOANS

(continued
<CAPTION>

NUMBER            DATE              BALANCE          LTV      SUBSIDY     CODE       FEE       LOAN       FEE      YIELD
- --------       -----------      --------------      ------   --------- ---------- --------  -------     -------    -----
<S>           <C>              <C>                <C>        <C>        <C>        <C>       <C>         <C>     <C>
4000439         1-Aug-29         $ 498,851.59       53.76                           0.250                0.017     0.000
6390726         1-Nov-27         $ 285,944.45       80.00                           0.250                0.017     0.000
6467217         1-Feb-28         $ 240,045.93       82.99                  06       0.250                0.017     0.108
6629030         1-Feb-28         $ 267,073.04       79.91                           0.250                0.017     0.000
6635594         1-Feb-28         $ 239,947.35       90.00                  12       0.250                0.017     0.108
6671484         1-Feb-28         $ 322,629.49       69.31                           0.250                0.017     0.000
6733509         1-Apr-28         $ 291,287.30       58.55                           0.250                0.017     0.000
6753876         1-Nov-28         $ 266,396.52       79.88                           0.250                0.017     0.000
6952712         1-Dec-28         $ 295,178.61       76.92                           0.250                0.017     0.000
7031431         1-Aug-28         $ 279,544.70       51.45                           0.250                0.017     0.000
7103211         1-Feb-29         $ 248,112.58       79.37                           0.250                0.017     0.000
7103606         1-Sep-28         $ 348,568.56       75.00                           0.250                0.017     0.000
7137064         1-Oct-28         $ 296,844.84       46.15                           0.250                0.017     0.000
7187674         1-Oct-28         $ 338,489.34       61.07                           0.250                0.017     0.000
7230106         1-Nov-28         $ 394,048.91       76.52                           0.250                0.017     0.000
7231126         1-May-29         $ 286,631.45       89.94                  13       0.250                0.017     0.000
7235754         1-Nov-28         $ 268,312.76       66.10                           0.250                0.017     0.000
7281540         1-Dec-28         $ 312,857.72       76.08                           0.250                0.017     0.000
7282892         1-Jul-28         $ 276,330.62       90.00                  06       0.250                0.017     0.000
7291912         1-Nov-28         $ 272,240.52       69.99                           0.250                0.017     0.000
7292148         1-Dec-28         $ 574,614.56       77.33                           0.250                0.017     0.000
7292815         1-Dec-28         $ 376,471.96       62.30                           0.250                0.017     0.000
7297394         1-Jan-29         $ 620,824.31       80.00                           0.250                0.017     0.000
7313741         1-Jan-29         $ 394,639.64       66.78                           0.250                0.017     0.000
7327736         1-Dec-28         $ 305,603.73       74.05                           0.250                0.017     0.000
7347255         1-Dec-28         $ 356,375.10       61.54                           0.250                0.017     0.000
7347271         1-Nov-28         $ 306,182.69       57.41                           0.250                0.017     0.000
7350668         1-Jan-29         $ 347,053.48       80.00                           0.250                0.017     0.000
7350711         1-Dec-28         $ 273,458.10       70.89                           0.250                0.017     0.000
7351090         1-Dec-28         $ 405,293.47       52.77                           0.250                0.017     0.000
7351717         1-Dec-28         $ 307,121.85       75.61                           0.250                0.017     0.000
7351719         1-Nov-28         $ 346,444.64       72.92                           0.250                0.017     0.000
7361015         1-Dec-28         $ 326,861.44       71.74                           0.250                0.017     0.000
7364942         1-Nov-28         $ 257,421.84       65.00                           0.250                0.017     0.000
7381016         1-Jan-29         $ 321,971.73       73.03                           0.250                0.017     0.000
7381520         1-Dec-28         $ 323,790.97       89.66                  01       0.250                0.017     0.000
7382311         1-Feb-29         $ 331,650.35       46.58                           0.250                0.017     0.000
7386478         1-Jan-29         $ 272,685.78       68.75                           0.250                0.017     0.000
7388037         1-Dec-28         $ 426,007.67       74.14                           0.250                0.017     0.000
7403352         1-Dec-28         $ 396,286.31       53.33                           0.250                0.017     0.000
7403391         1-Feb-29         $ 387,054.84       76.47                           0.250                0.017     0.000
7418208         1-Dec-28         $ 274,923.69       54.95                           0.250                0.017     0.000
7432601         1-Dec-28         $ 305,405.56       80.00                           0.250                0.017     0.000
7452458         1-Dec-28         $ 285,591.24       79.99                           0.250                0.017     0.233
7458113         1-Feb-29         $ 117,759.27       63.64                           0.250                0.017     0.108
7472599         1-Jan-29         $ 347,433.50       58.33                           0.250                0.017     0.233
7477933         1-Jan-29         $ 633,750.66       66.22                           0.250                0.017     0.000
7478390         1-Jan-29         $ 564,686.60       75.00                           0.250                0.017     0.000
7485999         1-Dec-28         $ 340,957.27       80.00                           0.250                0.017     0.000
7504636         1-Jan-29         $ 284,809.07       76.33                           0.250                0.017     0.000
7516121         1-Mar-29         $ 335,580.28       75.62                           0.250                0.017     0.000
7516973         1-Jan-29         $ 631,639.31       79.63                           0.250                0.017     0.000
7520774         1-Jan-29         $ 252,012.97       79.38                           0.250                0.017     0.000
7523842         1-Jan-29         $ 423,081.24       70.00                           0.250                0.017     0.000
7527228         1-Mar-29         $ 332,757.86       78.18                           0.250                0.017     0.000
7532856         1-Feb-29         $ 307,495.73       79.49                           0.250                0.017     0.000
7534102         1-Feb-29         $ 268,843.59       95.00                  01       0.250                0.017     0.000
7537795         1-Feb-29         $ 293,922.35       72.20                           0.250                0.017     0.000
7537990         1-Feb-29         $ 258,656.81       72.05                           0.250                0.017     0.000
7539662         1-Feb-29         $ 386,832.42       70.82                           0.250                0.017     0.000
7544567         1-Mar-29         $ 298,040.36       58.82                           0.250                0.017     0.000
7552656         1-Mar-29         $ 329,781.68       79.99                           0.250                0.017     0.000
7553170         1-Apr-29         $ 280,072.14       74.99                           0.250                0.017     0.000
7558417         1-Feb-29         $ 390,329.95       90.00                  06       0.250                0.017     0.000
7565114         1-Apr-29         $ 422,636.72       77.21                           0.250                0.017     0.000
7566957         1-Feb-29         $ 322,347.22       80.00                           0.250                0.017     0.000
7574400         1-Mar-29         $ 288,059.01       44.68                           0.250                0.017     0.000
7576750         1-Mar-29         $ 495,817.97       78.45                           0.250                0.017     0.000
7577530         1-Apr-29         $ 347,956.26       73.68                           0.250                0.017     0.000
7582559         1-Mar-29         $ 496,733.94       60.14                           0.250                0.017     0.000
7582780         1-Mar-29         $ 292,142.05       80.00                           0.250                0.017     0.000
7586065         1-Feb-29         $ 332,066.87       89.99                  06       0.250                0.017     0.000
7589090         1-Apr-29         $ 268,259.62       68.35                           0.250                0.017     0.000
7589374         1-Mar-29         $ 297,992.08       74.07                           0.250                0.017     0.000
7589429         1-Mar-24         $ 334,472.97       71.16                           0.250                0.017     0.000
7591570         1-Mar-29         $ 437,125.93       55.70                           0.250                0.017     0.000
7592594         1-Mar-29         $ 324,611.62       80.00                           0.250                0.017     0.000
7594551         1-Mar-29         $ 268,435.18       74.32                           0.250                0.017     0.000
7600902         1-Aug-29         $ 288,998.17       80.00                           0.250                0.017     0.358
7606699         1-Mar-29         $ 341,807.20       80.00                           0.250                0.017     0.000
7606744         1-Mar-29         $ 246,561.10       75.76                           0.250                0.017     0.000
7607253         1-Apr-29         $ 418,541.71       84.71                  24       0.250                0.017     0.000
7609372         1-Mar-29         $ 281,103.48       95.00                  06       0.250                0.017     0.000
7610321         1-Apr-29         $ 372,863.09       72.87                           0.250                0.017     0.000
7612191         1-Apr-29         $ 307,151.29       76.30                           0.250                0.017     0.000
7616610         1-Mar-29         $ 331,596.49       64.23                           0.250                0.017     0.000
7620900         1-Mar-29         $ 316,666.25       80.00                           0.250                0.017     0.000
7621135         1-Mar-29         $ 281,523.73       89.81                  13       0.250                0.017     0.000
7625083         1-Apr-29         $ 343,034.01       78.41                           0.250                0.017     0.000
7626254         1-Apr-29         $ 363,766.04       80.00                           0.250                0.017     0.000
7630159         1-Apr-29         $ 258,287.22       61.18                           0.250                0.017     0.000
7639586         1-Apr-29         $ 362,371.58       74.54                           0.250                0.017     0.000
7642750         1-May-29         $ 270,738.92       80.00                           0.250                0.017     0.000
7643591         1-Apr-29         $ 302,019.08       75.00                           0.250                0.017     0.000
7646402         1-Apr-29         $ 397,720.63       70.18                           0.250                0.017     0.000
7652223         1-Mar-29         $ 325,618.02       76.69                           0.250                0.017     0.000
7657715         1-May-29         $ 433,928.18       80.00                           0.250                0.017     0.000
7670417         1-Apr-29         $ 258,518.37       75.49                           0.250                0.017     0.000
7671831         1-May-29         $ 250,702.96       90.00                  06       0.250                0.017     0.000
7679625         1-Apr-29         $ 320,252.97       80.00                           0.250                0.017     0.000
7683779         1-Apr-29         $ 383,313.12       77.20                           0.250                0.017     0.000
7726258         1-May-29         $ 277,905.55       80.00                           0.250                0.017     0.000

                               $34,295,160.89


COUNT:                                102
WAC:                          7.190137784
WAM:                          349.7039838
WALTV:                        73.29914858

</TABLE>



<PAGE>



                                   EXHIBIT F-2



    [Schedule of Mortgage Loans Serviced by Norwest Mortgage in Frederick,
                                  Maryland]

<TABLE>
NASCOR
NMI / 1999-26  Exhibit F-2
30 YEAR FIXED RATE NON RELOCATION  LOANS
<CAPTION>


     (i)       (ii)                                                    (iii)        (iv)         (v)           (vi)          (vii)
    -----      ---------------------------        -----     -----    --------     --------    --------      ----------      --------
                                                                                                 NET
   MORTGAGE                                                                       MORTGAGE    MORTGAGE        CURRENT       ORIGINAL
     LOAN                                                    ZIP     PROPERTY     INTEREST    INTEREST        MONTHLY       TERM TO
    NUMBER     CITY                               STATE     CODE       TYPE         RATE        RATE          PAYMENT       MATURITY
   --------    ----------------------------------------------------- --------     --------    --------      ----------      --------
<S>           <C>                                <C>      <C>         <C>        <C>          <C>          <C>              <C>
   4659771     SAN JOSE                             CA      95125       SFD        7.800        7.250       $ 2,339.58        360
   4767821     LAYTON                               UT      84041       SFD        7.000        6.733       $ 1,617.35        360
   4768085     WORCESTER                            MA      01609       SFD        8.125        7.250       $ 2,591.16        360
   4790576     CUMMING                              GA      30131       SFD        7.500        7.233       $ 2,284.54        353
   4794825     MADERA                               CA      93637       SFD        7.600        7.250       $ 2,732.51        360
   4830087     PITTSBORO                            IN      46167       SFD        8.500        7.250       $ 2,806.54        360
   4832965     SAN JOSE                             CA      95132       SFD        7.800        7.250       $ 2,735.51        360
   4864504     WASHINGTON                           DC      20001       MF2        7.250        6.983       $ 1,982.75        360
   4973704     SACRAMENTO                           CA      95864       SFD        8.125        7.250       $ 2,425.74        360
   4995945     AUDUBON                              PA      19403       SFD        8.000        7.250       $ 2,568.18        360
   4997688     LOMA                                 CO      81524       SFD        8.125        7.250       $ 1,889.51        360
   5003229     MONTGOMERY TWP                       NJ      08502       SFD        7.375        7.108       $ 2,268.87        360
   5006699     PALATINE                             IL      60067       SFD        7.750        7.250       $ 2,622.06        360
   5015803     HOWARD BEACH                         NY      11414       SFD        8.125        7.250       $ 1,893.37        360
   5017821     NEWTOWN SQUARE                       PA      19073       SFD        6.750        6.483       $ 2,075.52        360
   5018546     BELLMORE                             NY      11710       SFD        7.250        6.983       $ 1,875.98        360
   5028319     MOUNTAIN VIEW                        CA      94043       MF2        7.625        7.250       $ 2,371.11        360
   5030165     LONG VALLEY                          NJ      07853       SFD        7.250        6.983       $ 2,831.04        360
   5033606     FRANKLIN PARK                        NJ      08823       SFD        7.375        7.108       $ 1,899.36        360
   5035305     SPRING                               TX      77379       SFD        7.000        6.733       $ 2,336.55        360
   5036294     CEDAR HILL                           TX      75104       SFD        8.125        7.250        $ 493.77         360
   5037389     HUNTINGTON                           NY      11743       SFD        7.750        7.250       $ 2,063.27        360
   5040581     STATEN ISLAND                        NY      10311       SFD        8.750        7.250       $ 2,752.67        360
   5044291     SAN FRANCISCO                        CA      94114       LCO        8.375        7.250       $ 2,493.04        360
   5046407     HARRISON                             NY      10528       SFD        7.875        7.250       $ 2,664.64        360
   5050859     EAGLE                                ID      83616       SFD        7.375        7.108       $ 2,315.14        360
   5051196     BAY HEAD                             NJ      08742       SFD        7.750        7.250       $ 4,087.14        360
   5052541     DALLAS                               TX      75230       SFD        7.625        7.250       $ 2,683.96        360
   5054591     FAIR OAKS                            CA      95628       SFD        7.625        7.250       $ 3,185.08        360
   5054938     NEW YORK                             NY      10028       COP        8.000        7.250       $ 1,944.48        360
   5057664     LIVINGSTON                           NJ      07039       SFD        7.000        6.733       $ 2,246.07        360
   5057854     TEWKSBURY                            NJ      07830       SFD        7.000        6.733       $ 3,858.76        360
   5058143     SAN JOSE                             CA      95135       SFD        7.125        6.858       $ 2,177.46        360
   5058204     SAN FRANCISCO                        CA      94134       MF2        7.125        6.858       $ 2,694.21        360
   5058515     EAST HILLS                           NY      11576       SFD        7.500        7.233       $ 3,496.08        360
   5059189     STILLWATER                           OK      74075       SFD        8.125        7.250       $ 2,264.62        360
   5060679     STATEN ISLAND                        NY      10312       SFD        8.250        7.250       $ 2,253.80        360
   5061525     CAPE ELIZABETH                       ME      04107       SFD        7.250        6.983       $ 3,410.88        360
   5063283     NEW YORK                             NY      10022       COP        7.500        7.233       $ 1,992.77        360
   5065625     TORRANCE                             CA      90503       SFD        6.875        6.608       $ 1,642.32        360
   5067915     RANCHO PALOS VERDES                  CA      90275       SFD        7.000        6.733       $ 1,643.30        360
   5068282     FORT SALONGA                         NY      11768       SFD        8.500        7.250       $ 2,214.47        360
   5069209     AURORA                               CO      80016       SFD        7.875        7.250       $ 2,078.05        360
   5069929     FRANKLIN                             TN      37069       SFD        7.000        6.733       $ 2,501.54        360
   5071101     CLINTON                              NJ      08809       SFD        8.625        7.250       $ 2,275.04        360
   5072386     PRESTON                              ID      83263       SFD        8.125        7.250        $ 556.87         360
   5072879     SAN DIEGO                            CA      92122       SFD        7.875        7.250       $ 2,059.20        360
   5072983     SAN JOSE                             CA      95121       SFD        7.875        7.250       $ 2,465.24        360
   5076984     RANCHO SANTA MARGARITA AR            CA      92688       SFD        7.250        6.983       $ 2,264.83        360
   5077016     FAIRFAX                              VA      22030       SFD        7.000        6.733       $ 1,829.58        360
   5078809     HOUSTON                              TX      77005       SFD        7.000        6.733       $ 3,326.52        360
   5080077     MIAMI BEACH                          FL      33154       SFD        8.375        7.250       $ 4,721.95        360
   5080626     ST PAUL                              MN      55116       SFD        7.750        7.250       $ 1,998.79        360
   5081746     FREMONT                              CA      94539       SFD        9.250        7.250       $ 2,385.76        360
   5081911     HILTON HEAD ISLAND                   SC      29926       SFD        7.875        7.250       $ 1,993.94        360
   5083047     MYRTLE BEACH                         SC      29577       SFD        8.125        7.250       $ 2,019.60        360
   5084858     SEATTLE                              WA      98126       SFD        7.750        7.250       $ 2,120.59        360
   5084904     SAN JOSE                             CA      95135       SFD        8.875        7.250       $ 3,325.80        360
   5085492     HUNTINGTON                           NY      11743       SFD        8.500        7.250       $ 2,491.28        360
   5085862     NAPA                                 CA      94558       SFD        8.250        7.250       $ 2,072.75        360
   5085983     LOS ANGELES                          CA      90066       SFD        7.500        7.233       $ 3,146.47        360
   5086058     FULLERTON                            CA      92832       SFD        7.375        7.108       $ 1,996.06        360
   5086102     HUNTINGTON BEACH                     CA      92647       SFD        7.375        7.108       $ 1,734.98        360
   5086356     OAKTON                               VA      22124       SFD        8.125        7.250       $ 2,301.75        360
   5086800     COROLLA                              NC      27927       SFD        8.750        7.250       $ 2,832.13        360
   5087335     FOUNTAIN VALLEY                      CA      92708       SFD        7.250        6.983       $ 2,019.25        360
   5088392     TENAFLY                              NJ      07670       SFD        7.875        7.250       $ 3,764.57        360
   5089378     FREDERICKSBURG                       VA      22406       SFD        8.625        7.250       $ 1,241.36        360
   5090081     NEW YORK                             NY      10017       HCO        8.500        7.250       $ 1,835.40        360
   5090848     WESTON                               MA      02493       SFD        6.625        6.358       $ 1,920.94        360
   5091703     WESTWOOD                             NJ      07675       LCO        8.375        7.250       $ 1,976.19        360
   5092272     CHARLESTOWN                          MA      02129       MF2        7.750        7.250       $ 1,647.75        360
   5092446     CLOSTER                              NJ      07627       SFD        8.000        7.250       $ 3,081.81        360
   5092454     HURST                                TX      76054       SFD        8.125        7.250        $ 742.50         360
   5092585     MADISON                              CT      06443       SFD        7.625        7.250       $ 2,378.19        360
   5093074     GRAFTON                              MA      01519       SFD        8.375        7.250       $ 2,334.19        360
   5093126     ANGELS CAMP                          CA      95222       SFD        8.875        7.250        $ 974.67         360
   5093246     GREAT FALLS                          VA      22066       SFD        7.875        7.250       $ 2,842.28        360
   5093295     ELMSFORD                             NY      10523       SFD        7.875        7.250       $ 2,030.20        360
   5093431     TULSA                                OK      74136       SFD        8.375        7.250       $ 2,810.75        360
   5093442     WALNUT                               CA      91789       SFD        8.500        7.250       $ 2,645.07        360
   5094387     MENLO PARK                           CA      94025       SFD        8.625        7.250       $ 2,310.04        360
   5094901     MANHATTAN                            NY      10025       HCO        8.375        7.250       $ 2,250.58        360
   5095332     ALISO VIEJO                          CA      92656       SFD        8.000        7.250       $ 1,843.21        360
   5095406     FORT LEE                             NJ      07024       HCO        8.875        7.250        $ 745.92         360
   5096177     HANOVER NECK                         NJ      07936       SFD        7.000        6.733       $ 2,095.71        360
   5096216     LUTHERVILLE                          MD      21093       SFD        7.750        7.250       $ 2,299.68        360
   5096297     OKLAHOMA CITY                        OK      73116       SFD        8.375        7.250       $ 3,800.36        360
   5096351     BRENTWOOD                            TN      37027       SFD        7.875        7.250       $ 2,441.31        360
   5096353     SOUTH RIDING                         VA      20152       SFD        7.250        6.983       $ 2,074.16        360
   5096400     FALMOUTH                             ME      04105       SFD        8.375        7.250       $ 2,505.20        360
   5096420     PORTLAND                             OR      97201       SFD        7.750        7.250       $ 2,185.06        360
   5096495     COLLEYVILLE                          TX      76034       SFD        8.000        7.250       $ 2,582.85        360
   5096725     MENDON                               NY      14506       SFD        8.250        7.250       $ 4,267.20        360
   5097138     ANDOVER                              MA      01810       SFD        8.250        7.250       $ 2,494.21        360
   5097549     ASHBURN                              VA      20147       SFD        8.000        7.250        $ 675.06         360
   5097935     WEST CHESTER                         PA      19382       SFD        8.250        7.250       $ 2,223.75        360
   5098004     NEW YORK                             NY      10028       HCO        8.625        7.250       $ 3,881.18        360
   5098081     SHREWSBURY                           MA      01545       SFD        8.500        7.250       $ 2,128.36        360
   5098112     BELTSVILLE                           MD      20705       SFD        7.875        7.250       $ 1,994.30        360
   5098121     SOUTH RIDING                         VA      20152       SFD        8.375        7.250       $ 2,646.19        360
   5098477     CLIFTON                              VA      20124       SFD        6.750        6.483       $ 3,005.93        360
   5098499     SCOTTSDALE                           AZ      85253       SFD        7.750        7.250       $ 3,754.00        360
   5098716     LITTLE SILVER                        NJ      07739       SFD        8.375        7.250       $ 2,243.74        360
   5098774     OAKLAND                              NJ      07436       SFD        7.625        7.250       $ 2,207.61        360
   5098859     SOUTH BRISTOL                        ME      04568       SFD        8.625        7.250       $ 4,355.63        360
   5098998     RICHMOND                             VA      23221       SFD        7.250        6.983       $ 2,534.29        360
   5099469     EASTON                               CT      06612       SFD        8.750        7.250       $ 2,832.13        360
   5099485     SAN MARINO                           CA      91108       SFD        7.625        7.250       $ 2,831.18        360
   5099715     MILLBRAE                             CA      94030       SFD        7.625        7.250       $ 2,264.94        360
   5099749     CHANTILLY                            VA      20151       SFD        7.750        7.250       $ 2,212.28        360
   5100046     ARLINGTON                            VA      22203       SFD        8.375        7.250       $ 2,268.82        360
   5100091     RICHMOND                             VA      23233       SFD        7.250        6.983       $ 4,434.15        360
   5100148     MAPLETON                             UT      84664       SFD        7.750        7.250       $ 2,722.37        360
   5100166     GLENDORA                             CA      91740       SFD        8.250        7.250       $ 1,859.01        360
   5100245     WANAQUE                              NJ      07465       SFD        9.250        7.250       $ 2,937.37        360
   5100339     SAN DIEGO                            CA      92107       MF2        7.750        7.250       $ 3,209.53        360
   5100349     DARIEN                               CT      06820       SFD        7.250        6.983       $ 5,457.42        360
   5100432     WESTPORT                             CT      06880       SFD        7.250        6.983       $ 5,218.65        360
   5100449     PRINCETON                            NJ      08540       SFD        7.625        7.250       $ 4,593.59        360
   5100457     LOS ALTOS                            CA      94024       SFD        8.375        7.250       $ 2,660.26        360
   5100523     SANTA CLARITA AREA                   CA      91350       SFD        7.875        7.250       $ 2,512.01        360
   5100533     DOBBS FERRY                          NY      10522       SFD        7.375        7.108       $ 5,180.07        360
   5100548     STAMFORD                             CT      06902       HCO        8.250        7.250       $ 2,295.47        240
   5100694     WESTPORT                             CT      06880       SFD        8.125        7.250       $ 2,652.20        360
   5100792     LONG BEACH                           CA      90807       SFD        7.875        7.250       $ 4,060.39        360
   5100820     BROOKLYN                             NY      11217       MF2        7.500        7.233       $ 2,391.32        360
   5101155     WASHINGTON                           DC      20016       COP        7.375        7.108       $ 2,279.23        360
   5101245     WILDWOOD                             MO      63025       SFD        8.750        7.250       $ 2,469.46        360
   5101262     NEW YORK                             NY      10036       COP        8.375        7.250       $ 3,161.91        360
   5101267     RICHMOND                             VA      23236       SFD        8.500        7.250        $ 935.00         360
   5101272     MORRISTOWN                           NJ      07960       SFD        8.625        7.250       $ 2,065.81        360
   5101318     EDMONDS                              WA      98026       SFD        8.375        7.250       $ 2,393.85        360
   5101321     NEW YORK                             NY      10024       COP        8.625        7.250       $ 1,928.92        360
   5101475     LA HABRA HEIGHTS                     CA      90631       SFD        8.500        7.250       $ 1,960.73        360
   5101789     WILMINGTON                           NC      28412       SFD        8.500        7.250       $ 1,422.49        360
   5102127     BONITA SPRINGS                       FL      34134       SFD        8.500        7.250       $ 3,844.57        360
   5102748     MEREDITH                             NH      03253       SFD        8.000        7.250       $ 2,506.54        360
   5103440     SPOKANE                              WA      99205       SFD        8.375        7.250       $ 1,328.23        360
   5103579     LAS VEGAS                            NV      89129       SFD        8.750        7.250       $ 2,194.90        360
   5103999     PLYMOUTH                             MA      02360       SFD        8.375        7.250       $ 1,915.38        360
   5104137     HUNTINGTON                           NY      11743       SFD        8.250        7.250       $ 2,884.87        360
   5104426     GERMANTOWN                           MD      20876       SFD        8.125        7.250       $ 2,780.65        360
   5104464     SUNNY ISLE BEACH                     FL      33160       HCO        8.750        7.250       $ 3,146.80        360
   5104635     PARK CITY                            UT      84098       SFD        8.125        7.250       $ 2,104.61        360
   5104653     SAN CLEMENTE                         CA      92672       SFD        8.875        7.250       $ 3,180.20        360
   5105136     PLANO                                TX      75093       SFD        8.125        7.250       $ 2,104.98        360
   5105217     BOW                                  WA      98232       SFD        8.250        7.250       $ 2,704.56        360
   5105337     LONG BEACH                           NY      11561       SFD        8.375        7.250       $ 1,945.78        360
   5105794     ANNAPOLIS                            MD      21401       SFD        8.000        7.250       $ 2,048.68        360
   5106020     ANCHORAGE                            AK      99516       SFD        8.500        7.250       $ 2,891.12        360
   5106074     MIAMI                                FL      33131       HCO        8.375        7.250       $ 1,159.12        360
   5106114     IJAMSVILLE                           MD      21754       SFD        8.625        7.250       $ 1,998.92        360
   5106429     ROCKVILLE CENTRE                     NY      11570       SFD        7.625        7.250       $ 2,194.17        360
   5106430     LUTZ                                 FL      33549       SFD        8.500        7.250        $ 764.30         360
   5106755     RESTON                               VA      22071       SFD        8.000        7.250       $ 1,860.10        360
   5106773     DAMASCUS                             MD      20872       SFD        9.500        7.250       $ 3,867.93        360
   5107021     EVANSTON                             IL      60202       SFD        8.875        7.250       $ 3,309.89        360
   5107061     STILLWATER                           MN      55082       SFD        8.125        7.250       $ 2,301.74        360
   5107163     CONCORD                              MA      01742       SFD        8.250        7.250       $ 2,062.23        360
   5107195     WILTON                               CT      06897       SFD        7.375        7.108       $ 2,072.03        360
   5107210     LAGUNA HILLS                         CA      92653       SFD        8.125        7.250       $ 3,711.74        360
   5107217     SOUTH OGDEN                          UT      84403       SFD        8.250        7.250       $ 2,760.90        360
   5107229     COOLIN                               ID      83821       SFD        7.875        7.250       $ 2,316.60        360
   5107233     ATLANTA                              GA      30319       SFD        7.375        7.108       $ 2,688.11        360
   5107246     CEDAR PARK                           TX      78613       SFD        7.500        7.233       $ 4,474.97        360
   5107256     EASTON                               PA      18045       SFD        7.500        7.233       $ 2,775.88        360
   5107268     DENVER                               CO      80210       SFD        7.375        7.108       $ 3,302.46        360
   5107276     NEW YORK                             NY      10028       COP        8.750        7.250       $ 2,096.56        360
   5107303     LOS ANGELES                          CA      91040       SFD        7.875        7.250       $ 2,936.53        360
   5107311     CLOVIS                               CA      93611       SFD        7.250        6.983       $ 1,962.62        360
   5107320     SAN JOSE                             CA      95135       SFD        7.250        6.983       $ 3,758.79        360
   5107880     DRAPER                               UT      84020       SFD        8.500        7.250       $ 2,245.23        360
   5108043     PRESCOTT                             AZ      86305       SFD        8.500        7.250       $ 2,456.68        360
   5108096     ANNANDALE                            NJ      08801       SFD        8.125        7.250       $ 2,325.51        360
   5108598     BLUFFTON                             SC      29910       SFD        8.125        7.250       $ 4,826.24        360
   5108628     FORT LAUDERDALE                      FL      33304       SFD        8.125        7.250       $ 1,930.50        360
   5108684     GREENLAWN                            NY      11740       SFD        8.375        7.250       $ 2,002.04        360
   5108746     EDINA                                MN      55436       SFD        8.125        7.250       $ 2,010.32        360
   5108888     EDINA                                MN      55424       SFD        8.125        7.250       $ 3,563.99        360
   5109291     GREAT RIVER                          NY      11739       SFD        7.250        6.983       $ 1,931.24        360
   5109605     NORTHPORT                            NY      11768       SFD        8.250        7.250       $ 2,103.55        360
   5109631     SAN FRANCISCO                        CA      94109       LCO        9.000        7.250       $ 2,293.18        360
   5109763     CHAGRIN FALLS                        OH      44023       SFD        7.875        7.250       $ 1,218.12        360
   5109789     EASTPOINT                            FL      32328       SFD        7.875        7.250       $ 1,993.94        360
   5109796     ENCINITAS                            CA      92024       SFD        8.000        7.250       $ 2,078.02        360
   5110328     MILPITAS                             CA      95035       SFD        9.000        7.250       $ 2,172.49        360
   5110396     SIDNEY                               NE      69162       SFD        8.000        7.250       $ 1,960.62        360
   5110743     CHINO HILLS                          CA      91709       SFD        8.250        7.250       $ 2,120.83        360
   5110757     FORT SMITH                           AR      72903       SFD        8.375        7.250       $ 2,975.68        360
   5110993     OKLAHOMA CITY                        OK      73131       SFD        8.250        7.250       $ 2,892.38        360
   5111441     FREMONT                              CA      94555       SFD        9.000        7.250       $ 2,928.83        360
   5111492     SPARTA                               NJ      07871       SFD        7.875        7.250       $ 3,335.32        360
   5111573     WEST COVINA                          CA      91791       SFD        8.500        7.250       $ 2,269.84        360
   5111625     DALLAS                               TX      75248       SFD        8.000        7.250       $ 2,694.39        360
   5112069     SANTA BARBARA                        CA      93111       SFD        8.500        7.250       $ 2,638.92        360
   5112732     BROOKLYN                             NY      11236       SFD        8.375        7.250       $ 2,223.21        360
   5112937     WALNUT CREEK                         CA      94595       LCO        7.500        7.233       $ 2,350.06        360
   5114815     GREAT NECK                           NY      11021       SFD        8.250        7.250       $ 4,883.23        360
   5114985     WHITE PLAINS                         NY      10605       SFD        8.125        7.250       $ 2,227.50        360
   5115277     REDDING                              CT      06896       SFD        7.250        6.983       $ 2,899.25        360
   5115553     SPRINGDALE                           AR      72764       SFD        8.000        7.250       $ 2,049.40        360
   5116790     SAN MATEO                            CA      94401       SFD        8.875        7.250       $ 2,434.67        360
   5116836     FORT MYERS BEACH                     FL      33931       HCO        8.625        7.250       $ 1,143.36        360
   5117218     LITTLE NECK                          NY      11362       SFD        8.750        7.250       $ 2,153.59        360
   5118219     PARK CITY                            UT      84098       SFD        8.125        7.250       $ 2,877.18        360
   5119359     BROOKLYN                             NY      11234       SFD        8.250        7.250       $ 2,620.04        360
   6534311     MINNEAPOLIS                          MN      55410       SFD        7.500        7.233       $ 1,748.04        360
   6568743     PHOENIX                              AZ      85016       SFD        7.125        6.858       $ 5,052.89        360
   6629319     CHEVY CHASE                          MD      20815       SFD        7.125        6.858       $ 5,473.96        360
   6715857     TEMPE                                AZ      85284       SFD        8.125        7.250       $ 2,440.59        360
   6737125     THE WOODLANDS                        TX      77381       SFD        7.125        6.858       $ 2,829.62        360
   6824202     MONROE                               WA      98272       SFD        7.250        6.983       $ 2,046.53        360
   6862139     VIENNA                               VA      22182       SFD        7.250        6.983       $ 2,258.00        360
   6910126     STILLWATER                           MN      55082       SFD        6.875        6.608       $ 2,925.96        360
   6911728     SHOREWOOD                            MN      55331       SFD        7.000        6.733       $ 2,644.68        360
   6915855     FLOWER MOUND                         TX      75028       SFD        7.375        7.108       $ 2,892.42        360
   6924027     ALEDO                                TX      76008       SFD        7.500        7.233       $ 3,216.39        360
   7024734     BASALT                               CO      81621       SFD        7.500        7.233       $ 2,814.34        360
   7070553     HUNT                                 TX      78028       SFD        8.125        7.250       $ 3,742.19        360
   7075819     THOUSAND OAKS                        CA      91361       PUD        7.125        6.858       $ 3,840.20        360
   7116911     PARK CITY                            UT      84060       SFD        7.125        6.858       $ 2,640.98        360
   7128203     NORTH OAKS                           MN      55127       SFD        7.250        6.983       $ 1,637.22        360
   7182233     REDLANDS                             CA      92373       SFD        7.625        7.250       $ 3,841.02        360
   7189403     LAKE BARRINGTON                      IL      60010       SFD        7.750        7.250       $ 2,058.61        360
   7224423     LAFAYETTE                            CO      80026       PUD        6.500        6.233       $ 2,781.10        360
   7237000     SANDY                                UT      84092       SFD        7.500        7.233       $ 3,083.54        360
   7270184     LAGRANGE                             IL      60525       SFD        7.250        6.983       $ 1,884.52        360
   7296269     EL PASO                              TX      79922       SFD        7.250        6.983       $ 2,701.42        360
   7312289     DEERFIELD                            IL      60015       SFD        7.250        6.983       $ 2,032.89        360
   7316054     WINFIELD                             IL      60190       SFD        7.250        6.983       $ 2,851.50        360
   7350535     PALATINE                             IL      60067       SFD        6.875        6.608       $ 2,087.07        360
   7351010     LAKE FOREST                          IL      60045       SFD        7.000        6.733       $ 1,763.05        360
   7355665     ADDISON                              IL      60101       SFD        6.875        6.608       $ 1,957.65        360
   7358166     COLORADO SPRINGS                     CO      80908       SFD        7.500        7.233       $ 3,142.97        360
   7375964     AMES                                 IA      50014       SFD        7.250        6.983       $ 2,762.81        360
   7396134     PLAINFIELD                           IL      60544       PUD        7.625        7.250       $ 2,449.33        360
   7403481     DAVIDSONVILLE                        MD      21033       SFD        7.750        7.250       $ 3,223.85        360
   7423872     BIG BEAR LAKE                        CA      92314       SFD        8.250        7.250       $ 3,455.83        360
   7425698     SEATTLE                              WA      98115       PUD        7.125        6.858       $ 1,684.30        360
   7434791     VALENCIA                             CA      91355       SFD        8.250        7.250       $ 3,072.68        360
   7476818     LIBERTYVILLE                         IL      60048       SFD        7.500        7.233       $ 3,440.14        360
   7482028     MINNETRISTA                          MN      55364       SFD        7.250        6.983       $ 4,434.15        360
   7486180     SALVO                                NC      27972       SFD        8.500        7.250       $ 3,982.97        360
   7491071     YARDLEY                              PA      19067       SFD        7.250        6.983       $ 2,484.78        360
   7502579     LAFAYETTE                            CA      94549       SFD        7.625        7.250       $ 2,845.33        360
   7503191     LONGVILLE                            MN      56655       SFD        7.125        6.858       $ 2,054.84        360
   7541889     CORNELIUS                            NC      28031       SFD        7.125        6.858       $ 1,792.05        360
   7559137     NEWPORT BEACH                        CA      92660       SFD        7.000        6.733       $ 6,454.76        360
   7564486     PANORA                               IA      50216       SFD        7.125        6.858       $ 2,122.21        360
   7566154     PAYSON                               AZ      85541       SFD        8.000        7.250       $ 2,458.11        360
   7567024     ANKENY                               IA      50021       SFD        7.625        7.250       $ 1,879.19        360
   7574491     REDWOOD CITY                         CA      94061       SFD        6.625        6.358       $ 1,652.00        360
   7577926     VALLEJO                              CA      94591       SFD        8.250        7.250       $ 2,005.94        360
   7585313     LAUREL                               MD      20708       SFD        8.500        7.250       $ 1,900.97        360
   7587740     CARMICHAEL                           CA      95608       SFD        7.625        7.250       $ 2,293.25        360
   7589780     OAK HILL                             VA      20171       SFD        7.000        6.733       $ 2,927.33        360
   7590510     HENDERSON                            NV      89012       SFD        7.250        6.983       $ 2,072.32        360
   7593261     HIGHLANDS RANCH                      CO      80126       SFD        8.500        7.250       $ 2,458.94        360
   7600988     LANDENBERG                           PA      19350       SFD        7.125        6.858       $ 2,863.30        360
   7607156     PLANO                                TX      75025       SFD        8.250        7.250       $ 2,703.96        360
   7611571     HILLIARD                             OH      43026       SFD        7.000        6.733       $ 1,719.17        360
   7612825     SHREVEPORT                           LA      71107       SFD        7.750        7.250       $ 2,192.22        360
   7614015     NYACK                                NY      10960       SFD        7.375        7.108       $ 2,382.83        360
   7616456     LITTLETON                            CO      80123       SFD        8.625        7.250       $ 1,788.92        360
   7617792     MOBILE                               AL      36695       SFD        8.375        7.250       $ 1,968.59        360
   7618286     CROWNSVILLE                          MD      21032       SFD        7.875        7.250       $ 3,681.18        360
   7618808     LEESBURG                             VA      20175       SFD        7.375        7.108       $ 1,864.82        360
   7620145     MAPLE PLAIN                          MN      55359       SFD        7.125        6.858       $ 3,702.08        360
   7620255     PITTSBORO                            IN      46167       SFD        6.125        5.858       $ 1,215.22        360
   7620647     WILMINGTON                           DE      19807       SFD        6.625        6.358       $ 2,735.09        360
   7623467     HAMPTON                              NH      03842       SFD        6.625        6.358       $ 2,753.34        360
   7631873     FREEHOLD                             NJ      07728       SFD        8.375        7.250       $ 2,243.13        360
   7635097     VIENNA                               VA      22182       SFD        7.000        6.733       $ 2,328.56        360
   7649039     HIGHLAND PARK                        IL      60035       SFD        7.875        7.250       $ 2,204.21        360
   7652059     SOUTHERN SHORES                      NC      27949       SFD        8.125        7.250       $ 1,972.07        360
   7652605     TUSTIN                               CA      92782       SFD        7.875        7.250       $ 3,795.38        360
   7658476     SOLEBURY                             PA      18938       SFD        7.000        6.733       $ 2,794.27        360
   7658660     ROCHESTER                            MN      55902       SFD        7.375        7.108       $ 4,420.32        360
   7659050     UNION CITY                           CA      94587       SFD        7.875        7.250       $ 2,279.33        360
   7660719     HENDERSON                            NV      89012       SFD        7.375        7.108       $ 2,890.48        360
   7661714     SAN ANTONIO                          TX      78248       SFD        8.250        7.250       $ 1,878.17        360
   7667689     SAN MATEO                            CA      94402       SFD        8.000        7.250       $ 2,348.05        360
   7671951     MINNETRISTA                          MN      55364       SFD        7.625        7.250       $ 2,601.57        360
   7672684     HUNTINGTON BEACH                     CA      92646       SFD        8.375        7.250       $ 1,956.81        360
   7674901     THOUSAND OAKS                        CA      91320       SFD        7.375        7.108       $ 4,022.49        360
   7675532     ROSWELL                              GA      30075       SFD        7.625        7.250       $ 2,538.29        360
   7675966     WEST LAKELAND                        MN      55082       SFD        7.000        6.733       $ 1,839.13        360
   7679162     DUNWOODY                             GA      30338       PUD        7.625        7.250       $ 2,123.38        360
   7687859     VIRGINIA BEACH                       VA      23451       LCO        7.750        7.250       $ 1,998.79        360
   7688914     ATHENS                               OH      45701       SFD        9.000        7.250       $ 2,413.87        360
   7689089     INDEPENDENCE                         MN      55359       SFD        7.875        7.250       $ 2,030.19        360
   7689466     CARBONDALE                           CO      81623       SFD        8.250        7.250       $ 2,287.55        360
   7691366     GREENVILLE                           DE      19807       SFD        6.750        6.483       $ 2,594.39        360
   7694080     COLORADO SPRINGS                     CO      80906       SFD        7.500        7.233       $ 1,872.15        360
   7699171     LAGRANGEVILLE                        NY      12540       SFD        7.875        7.250       $ 2,298.32        360
   7704700     BROOKLYN                             NY      11201       SFD        7.250        6.983       $ 2,319.40        360
   7708774     TUSTIN                               CA      92782       SFD        7.625        7.250       $ 2,539.92        360
   7710572     AUSTIN                               TX      78738       SFD        8.875        7.250       $ 2,737.02        360
   7712235     ST LEONARD                           MD      20685       SFD        7.250        6.983       $ 2,354.53        360
   7714240     EAGAN                                MN      55123       SFD        8.500        7.250       $ 2,583.55        360
   7714569     GAINESVILLE                          VA      20155       SFD        7.750        7.250       $ 1,923.57        360
   7721955     FAIRFAX                              VA      22030       SFD        8.000        7.250       $ 2,113.24        360
   7728559     MARSHFIELD                           MA      02050       SFD        8.250        7.250       $ 2,487.60        360
   7729910     AURORA                               CO      80016       SFD        7.250        6.983       $ 1,633.81        360
   7732534     EDINA                                MN      55435       SFD        8.000        7.250       $ 2,136.72        360
   7735237     CHANDLER                             AZ      85224       SFD        7.500        7.233       $ 2,225.25        360
   7735325     CHANDLER                             AZ      85224       SFD        8.250        7.250       $ 2,462.33        360
   7735726     TUSTIN                               CA      92782       SFD        7.375        7.108       $ 2,072.03        360
   7737097     ROCHESTER                            MN      55901       SFD        6.875        6.608       $ 2,207.28        360
   7743616     UNION CITY                           CA      94587       SFD        7.875        7.250       $ 2,362.62        360
   7754218     SHAKOPEE                             MN      55379       SFD        7.875        7.250       $ 2,900.28        360
   7756536     HILLSBOROUGH TWP                     NJ      08502       SFD        8.000        7.250       $ 2,744.28        360
   7758663     SAN JOSE                             CA      95123       SFD        7.750        7.250       $ 2,954.48        360
   7759123     DOWNERS GROVE                        IL      60515       SFD        7.250        6.983       $ 2,735.53        360
   7760422     WINCHESTER                           MA      01890       SFD        7.375        7.108       $ 4,171.68        360
   7762387     UNION CITY                           CA      94587       SFD        7.625        7.250       $ 2,455.19        360
   7766662     SEWICKLEY                            PA      15143       SFD        7.875        7.250       $ 2,231.76        360
   7766733     CUPERTINO                            CA      95014       SFD        6.875        6.608       $ 3,580.26        360
   7768569     BURBANK                              CA      91506       SFD        7.500        7.233       $ 3,356.23        360
   7768742     GREENVILLE                           DE      19807       SFD        7.625        7.250       $ 2,552.87        360
   7769583     W. BLOOMFIELD                        MI      48323       SFD        7.000        6.733       $ 3,160.19        360
   7775412     ALEXANDRIA                           VA      22307       SFD        7.625        7.250       $ 2,575.66        360
   7776728     EXETER                               NH      03833       SFD        8.875        7.250       $ 2,156.20        360
   7778499     CARBONDALE                           CO      81623       SFD        7.875        7.250       $ 2,581.25        360
   7779886     COLORADO SPRINGS                     CO      80921       SFD        7.250        6.983       $ 1,817.66        360
   7784839     SCOTTSDALE                           AZ      85255       SFD        7.000        6.733       $ 2,198.16        360
   7786036     MONTGOMERY TWP                       NJ      08558       SFD        6.500        6.233       $ 3,030.77        360
   7786460     NEWTOWN                              PA      18940       SFD        7.750        7.250       $ 3,582.06        360
   7787875     BOISE                                ID      83703       SFD        7.375        7.108       $ 2,071.33        360
   7789847     BELLEVUE                             WA      98007       SFD        8.250        7.250       $ 3,185.07        360
   7789889     NASHUA                               NH      03063       SFD        7.875        7.250       $ 2,030.19        360
   7790389     PARK RIDGE BORO                      NJ      07656       SFD        7.875        7.250       $ 2,175.21        360
   7795857     CALEDONIA                            MI      49316       SFD        8.000        7.250       $ 2,237.98        360
   7798834     LOS ANGELES                          CA      90016       SFD        8.875        7.250       $ 1,968.43        360
   7809637     EDEN PRAIRIE                         MN      55347       PUD        7.875        7.250       $ 2,465.24        360
   7812668     TIGARD                               OR      97224       SFD        8.875        7.250       $ 2,532.14        360
   7812919     POTOMAC                              MD      20854       SFD        7.500        7.233       $ 2,307.41        360
   7813450     EDINA                                MN      55436       SFD        8.125        7.250       $ 2,116.12        360
   7815785     OSPREY                               FL      34229       SFD        7.750        7.250       $ 4,224.63        360
   7816000     SAUSALITO                            CA      94965       SFD        8.250        7.250       $ 2,911.16        360
   7816019     SAN MATEO                            CA      94401       SFD        7.750        7.250       $ 2,379.75        360
   7819178     MONTGOMERY TWP                       NJ      08540       SFD        7.625        7.250       $ 2,132.18        360
   7819504     SACRAMENTO                           CA      95864       SFD        8.000        7.250       $ 4,035.71        360
   7822381     CARLISLE                             MA      01741       SFD        8.500        7.250       $ 2,595.08        360
   7823285     BOULDER                              CO      80303       SFD        8.125        7.250       $ 2,316.59        360
   7823786     SONOMA                               CA      95476       SFD        8.125        7.250       $ 2,375.99        360
   7824897     MARIETTA                             GA      30067       SFD        8.250        7.250       $ 4,883.23        360
   7827740     CONCORD                              CA      94518       SFD        8.000        7.250       $ 2,080.22        360
   7829276     CHANHASSEN                           MN      55317       SFD        8.625        7.250       $ 2,289.04        360
   7831172     DIX HILLS                            NY      11746       SFD        8.500        7.250       $ 2,068.38        360
   7831441     EVANSTON                             IL      60201       SFD        7.750        7.250       $ 3,223.85        360
   7834200     MONUMENT                             CO      80132       SFD        8.000        7.250       $ 2,348.05        360
   7838590     GREAT FALLS                          VA      22066       SFD        7.250        6.983       $ 3,960.72        360
   7840812     GLENDALE                             AZ      85304       SFD        8.000        7.250       $ 3,099.74        360
   7841790     ARLINGTON HEIGHTS                    IL      60004       SFD        8.250        7.250       $ 2,065.98        360
   7845116     MANKATO                              MN      56001       SFD        8.375        7.250       $ 2,479.74        360
   7845457     PHOENIX                              AZ      85032       SFD        8.000        7.250       $ 2,405.65        360
   7846149     BELMONT                              CA      94002       SFD        8.375        7.250       $ 2,280.22        360
   7847091     COLUMBIA                             MO      65203       SFD        7.875        7.250       $ 4,477.30        360
   7847349     SAN DIEGO                            CA      92131       SFD        7.125        6.858       $ 1,872.87        360
   7852197     OAKTON                               VA      22124       SFD        7.500        7.233       $ 2,013.74        360
   7853021     GILROY                               CA      95020       SFD        7.875        7.250       $ 2,095.04        360
   7853533     LITTLE SILVER                        NJ      07739       SFD        7.750        7.250       $ 3,582.06        360
   7853610     LITTLE SILVER                        NJ      07739       SFD        8.500        7.250       $ 3,844.57        360
   7855572     MARLBORO                             MA      01752       SFD        8.500        7.250       $ 2,114.51        360
   7856337     SAN MATEO                            CA      94402       SFD        7.625        7.250       $ 1,274.03        360
   7856830     HARRISON                             NY      10528       MF2        8.500        7.250       $ 3,104.49        360
   7857931     WASHINGTON                           DC      20009       SFD        7.625        7.250       $ 2,647.15        360
   7858562     STONY POINT                          NY      10986       SFD        8.625        7.250       $ 2,096.92        360
   7858861     WILBRAHAM                            MA      01095       SFD        8.250        7.250       $ 1,893.19        360
   7859084     LITTLETON                            CO      80126       SFD        8.375        7.250       $ 2,280.22        360
   7860408     LEONIA BOROUGH                       NJ      07605       LCO        8.375        7.250        $ 532.05         360
   7860492     LOUISVILLE                           KY      40207       SFD        8.250        7.250       $ 2,404.05        360
   7861359     MONTEREY                             CA      93940       SFD        8.375        7.250       $ 1,862.18        360
   7862059     PACIFIC GROVE                        CA      93950       SFD        8.500        7.250       $ 2,508.58        360
   7862566     OLD BRIDGE TWP                       NJ      07747       SFD        8.875        7.250       $ 2,024.92        360
   7866012     CHICAGO                              IL      60613       LCO        8.250        7.250       $ 2,084.01        360
   7867447     SPRINGFIELD                          VA      22152       SFD        7.875        7.250       $ 2,001.19        360
   7867944     SACRAMENTO                           CA      95829       SFD        8.375        7.250       $ 2,097.80        360
   7868313     SOLANA BEACH                         CA      92075       LCO        7.625        7.250       $ 2,123.38        360
   7868582     FOLSOM                               CA      95630       SFD        8.500        7.250       $ 2,058.38        360
   7868706     MANHATTAN BEACH                      CA      90266       SFD        7.875        7.250       $ 4,712.95        360
   7868885     SAN DIEGO                            CA      92130       SFD        8.000        7.250       $ 2,127.92        360
   7869872     DIX HILLS                            NY      11746       SFD        8.000        7.250       $ 2,254.86        360
   7870550     CLAYTON                              CA      94517       SFD        8.000        7.250       $ 2,201.29        360
   7870604     RYE                                  NH      03870       SFD        7.375        7.108       $ 3,160.53        360
   7871908     PRAIRIEVILLE                         LA      70769       SFD        7.875        7.250       $ 2,434.06        360
   7872760     ROSWELL                              GA      30075       SFD        8.500        7.250       $ 2,952.63        360
   7873638     TRUCKEE                              CA      96161       SFD        7.750        7.250       $ 3,582.06        360
   7876398     CHELAN                               WA      98816       SFD        8.500        7.250       $ 2,829.60        360
   7876877     YARDLEY                              PA      19067       SFD        7.625        7.250       $ 2,477.28        360
   7876934     BENICIA                              CA      94510       SFD        8.125        7.250       $ 2,397.78        360
   7877166     BORO OF RAMSEY                       NJ      07446       SFD        8.375        7.250       $ 2,128.20        360
   7877301     LOS GATOS                            CA      95030       SFD        9.250        7.250       $ 7,404.08        360
   7879164     MANAKIN-SABOT                        VA      23103       SFD        7.375        7.108       $ 2,762.70        360
   7880247     PUTNAM VALLEY                        NY      10579       SFD        7.875        7.250       $ 1,377.63        360
   7881957     SAN RAMON                            CA      94583       SFD        7.750        7.250       $ 2,134.91        360
   7882487     PINELLAS PARK                        FL      33782       SFD        7.000        6.733       $ 3,858.75        360
   7883194     WOODBURY                             MN      55125       SFD        8.500        7.250       $ 2,229.85        360
   7883716     SEAL BEACH                           CA      90740       SFD        8.250        7.250       $ 2,524.26        360
   7883886     LA MIRADA                            CA      90637       LCO        8.250        7.250        $ 496.96         360
   7885625     ALAMO                                CA      94507       SFD        8.375        7.250       $ 2,477.15        360
   7887097     SAN LUIS OBISPO                      CA      93401       SFD        8.125        7.250       $ 2,116.12        360
   7887927     HARRISONBURG                         VA      22801       SFD        8.875        7.250       $ 2,003.04        360
   7892045     SCOTTSDALE                           AZ      85260       LCO        8.875        7.250        $ 469.43         360
   7893968     NEWPORT BEACH                        CA      92660       SFD        7.000        6.733       $ 4,324.47        360
   7894586     CUMMING                              GA      30040       SFD        7.875        7.250       $ 2,188.84        360
   7894877     DAVIS                                CA      95616       SFD        8.375        7.250       $ 2,280.22        360
   7895734     ORONO                                MN      55391       SFD        7.500        7.233       $ 1,985.77        360
   7896737     ANNAPOLIS                            MD      21401       SFD        8.125        7.250       $ 2,245.31        360
   7897576     LOS ANGELES                          CA      91411       SFD        8.625        7.250        $ 927.13         360
   7898137     HERNDON                              VA      20171       SFD        8.250        7.250       $ 3,365.67        360
   7898770     CHARLOTTE                            NC      28270       SFD        8.500        7.250       $ 2,256.63        360
   7901751     INVER GROVE HEIGH                    MN      55077       SFD        8.625        7.250       $ 3,111.16        360
   7902090     MAMMOTH LAKES                        CA      93546       LCO        8.500        7.250       $ 2,245.23        360
   7902487     ROSEVILLE                            CA      95678       SFD        8.875        7.250       $ 2,386.93        360
   7902583     SANDWICH                             MA      02563       SFD        8.375        7.250       $ 2,698.26        360
   7903885     TULSA                                OK      74105       SFD        8.750        7.250       $ 2,902.92        360
   7904202     RIVERSIDE                            CA      92503       SFD        9.375        7.250       $ 2,227.01        360
   7905271     KIHEI                                HI      96753       PUD        8.375        7.250       $ 2,736.26        360
   7906856     WATKINSVILLE                         GA      30677       SFD        8.375        7.250       $ 2,280.22        360
   7907034     SANTA ANA                            CA      92705       SFD        8.500        7.250       $ 1,922.28        360
   7907559     BASALT                               CO      81621       SFD        8.125        7.250       $ 3,326.39        360
   7907708     WINDERMERE                           FL      34786       SFD        8.375        7.250       $ 2,097.80        360
   7907945     SAN RAMON                            CA      94583       SFD        8.125        7.250       $ 2,257.19        360
   7909713     AROMAS                               CA      95004       SFD        8.375        7.250       $ 2,204.21        360
   7909945     COLORADO SPRINGS                     CO      80907       SFD        8.375        7.250       $ 2,565.24        360
   7912313     DOWNINGTOWN                          PA      19335       PUD        7.625        7.250       $ 2,123.38        360
   7912600     MINNEAPOLIS                          MN      55410       SFD        8.000        7.250       $ 3,228.56        360
   7913281     ENGLEWOOD                            CO      80111       SFD        8.625        7.250       $ 2,539.48        360
   7913717     PORT REPUBLIC                        MD      20676       SFD        8.250        7.250       $ 2,241.03        360
   7914954     CARLSBAD                             CA      92009       SFD        8.250        7.250       $ 3,244.34        360
   7915191     ARLINGTON                            VA      22207       SFD        7.750        7.250       $ 2,980.27        360
   7915267     MERRIMACK                            NH      03054       SFD        8.500        7.250       $ 1,968.42        360
   7915878     APTOS                                CA      95003       SFD        8.500        7.250       $ 2,122.20        360
   7916388     NORTHRIDGE                           CA      91324       SFD        8.000        7.250       $ 2,348.05        360
   7917886     CEDAR RAPIDS                         IA      52411       SFD        7.875        7.250       $ 2,813.27        360
   7918631     LEESBURG                             VA      20176       SFD        8.625        7.250       $ 2,415.04        360
   7918930     LAKE FOREST                          CA      92705       SFD        7.750        7.250       $ 2,149.24        360
   7919833     SAN JOSE                             CA      95138       SFD        8.000        7.250       $ 4,138.43        360
   7919918     ST PETERSBURG                        FL      33715       SFD        8.125        7.250       $ 2,598.74        360
   7921048     LIBERTY                              ME      04921       SFD        8.500        7.250        $ 615.13         360
   7921165     LA HABRA HEIGHTS                     CA      90631       SFD        7.375        7.108       $ 2,508.19        360
   7921639     GULF BREEZE                          FL      32561       SFD        8.000        7.250       $ 3,287.27        360
   7921719     SAN FRANCISCO                        CA      94131       LCO        7.875        7.250       $ 2,378.23        360
   7922217     JAMUL                                CA      91935       SFD        8.750        7.250        $ 904.71         360
   7923285     CHEVY CHASE                          MD      20815       SFD        7.750        7.250       $ 2,149.24        360
   7923663     GROSSE ILE TWP                       MI      48138       SFD        8.375        7.250       $ 2,869.28        360
   7923725     SALT LAKE CITY                       UT      84111       LCO        8.500        7.250       $ 1,224.11        360
   7923853     PACIFIC GROVE                        CA      93950       SFD        8.250        7.250       $ 2,476.17        360
   7924130     FLOWER MOUND                         TX      75022       SFD        8.250        7.250       $ 1,997.17        360
   7924217     GLOUCESTER                           MA      01930       SFD        8.750        7.250       $ 3,108.25        360
   7924232     DEERFIELD BCH                        FL      33441       SFD        8.375        7.250       $ 3,040.29        360
   7924536     ATLANTA                              GA      30307       SFD        7.875        7.250       $ 2,697.26        360
   7925260     MANSFIELD                            MA      02048       SFD        8.000        7.250       $ 2,377.40        360
   7925824     NAPERVILLE                           IL      60564       SFD        8.500        7.250       $ 2,242.92        360
   7926321     DANVILLE                             CA      94526       SFD        8.750        7.250       $ 4,070.78        360
   7926929     LOS ANGELES                          CA      90004       SFD        9.000        7.250       $ 2,647.21        360
   7927025     SOMERS                               CT      06071       SFD        8.375        7.250       $ 4,560.43        360
   7927855     ESSEX                                CT      06442       SFD        8.375        7.250       $ 1,140.11        360
   7928413     COTO DE CAZA                         CA      92679       SFD        8.000        7.250       $ 4,182.20        240
   7928499     GREAT FALLS                          VA      22066       SFD        7.875        7.250       $ 2,900.28        360
   7928635     REISTERSTOWN                         MD      21136       SFD        8.375        7.250       $ 2,493.42        360
   7928714     BASALT                               CO      81621       SFD        8.500        7.250       $ 5,959.08        360
   7928850     COLUMBUS                             OH      43206       SFD        8.125        7.250       $ 2,450.24        360
   7929369     BASALT                               CO      81621       SFD        8.250        7.250       $ 3,395.73        360
   7929657     CHESTER TOWNSHIP                     NJ      07930       SFD        8.125        7.250       $ 3,860.99        360
   7929845     RENO                                 NV      89509       SFD        8.750        7.250       $ 3,146.80        360
   7930177     MCLEAN                               VA      22101       SFD        7.875        7.250       $ 2,813.27        360
   7930751     MONTEREY                             CA      93940       SFD        7.625        7.250       $ 1,840.26        360
   7931830     MARTINEZ                             CA      94553       SFD        8.375        7.250       $ 3,268.31        360
   7933215     SANTA CRUZ                           CA      95060       SFD        8.125        7.250       $ 2,780.65        360
   7935262     SUN VALLEY                           ID      83353       SFD        8.250        7.250       $ 3,155.32        360
   7935547     PARK CITY                            UT      84098       LCO        8.000        7.250       $ 2,051.58        360
   7935615     COLORADO SPRINGS                     CO      80906       SFD        8.000        7.250       $ 5,444.53        360
   7935907     MONTARA                              CA      94037       SFD        8.000        7.250       $ 2,274.67        360
   7938448     VIRGINIA BEACH                       VA      23452       SFD        8.000        7.250       $ 2,164.61        360
   7938649     SAN JOSE                             CA      95123       SFD        8.375        7.250       $ 3,298.71        360
   7938728     LAS VEGAS                            NV      89129       SFD        8.625        7.250       $ 2,364.48        360
   7938745     DANVILLE                             CA      94506       PUD        8.000        7.250       $ 2,025.19        360
   7939321     MOLALLA                              OR      97038       SFD        8.125        7.250       $ 3,101.78        360
   7940526     GAINESVILLE                          GA      30506       SFD        7.875        7.250       $ 2,646.50        360
   7941476     SAN DIEGO                            CA      92131       SFD        7.875        7.250       $ 2,505.11        360
   7941514     LITTLETON                            CO      80123       SFD        8.250        7.250       $ 2,629.43        360
   7941663     LAGUNA NIGUEL                        CA      92677       SFD        8.500        7.250       $ 1,960.73        360
   7942237     ST CLOUD                             MN      56301       SFD        8.500        7.250        $ 624.90         360
   7942973     VENTURA                              CA      93001       SFD        8.000        7.250       $ 2,080.22        360
   7943029     TRACY                                CA      95376       SFD        8.625        7.250       $ 2,208.92        360
   7943591     EDINA                                MN      55424       SFD        8.250        7.250       $ 3,005.07        360
   7943980     RENO                                 NV      89511       SFD        8.500        7.250       $ 2,145.27        360
   7944256     LEAVENWORTH                          WA      98826       SFD        8.250        7.250       $ 1,923.24        360
   7945015     SCOTTS VALLEY                        CA      95066       SFD        8.000        7.250       $ 3,272.59        360
   7946523     SCOTTSDALE                           AZ      85258       SFD        8.625        7.250       $ 2,333.37        360
   7950027     HAIKU                                HI      96708       SFD        8.125        7.250       $ 4,102.30        360
   7950049     OMAHA                                NE      68135       SFD        8.250        7.250       $ 2,271.83        360
   7950909     CARMEL VALLEY                        CA      93924       SFD        7.875        7.250       $ 2,356.48        360
   7951872     HOLMDEL                              NJ      07733       SFD        8.000        7.250       $ 3,301.94        360
   7953103     DOYLESTOWN                           PA      18901       SFD        7.750        7.250       $ 2,020.28        360
   7953652     DENVER                               CO      80209       LCO        7.750        7.250       $ 2,063.27        360
   7953752     VAUGHN                               WA      98394       SFD        8.250        7.250       $ 2,404.05        360
   7955332     EVERGREEN                            CO      80439       SFD        8.375        7.250       $ 1,900.18        360
   7955347     DUBLIN                               CA      94568       SFD        8.000        7.250       $ 3,721.65        360
   7955926     MEMPHIS                              TN      38120       SFD        7.875        7.250       $ 3,393.32        360
   7956071     SAN LUIS OBISPO                      CA      93401       SFD        8.000        7.250       $ 2,195.42        360
   7956497     HILLSBOROUGH                         CA      94010       SFD        8.375        7.250       $ 4,560.43        360
   7957502     BATON ROUGE                          LA      70810       SFD        8.000        7.250       $ 2,017.85        360
   7958355     NOVATO                               CA      94945       SFD        7.750        7.250       $ 2,453.02        360
   7963132     BOYNTON BEACH                        FL      33436       LCO        8.250        7.250        $ 563.45         360
   7963316     SAN DIEGO                            CA      92122       SFD        7.625        7.250       $ 1,860.08        360
   7963492     STOWE                                VT      05672       SFD        8.500        7.250       $ 5,459.29        360

</TABLE>

<TABLE>
NASCOR
NMI / 1999-26  Exhibit F-2
30 YEAR FIXED RATE NON RELOCATION  LOANS
<CAPTION>


     (i)         (viii)              (ix)           (x)       (xi)         (xii)       (xiii)       (xIv)         (xv)        (xvI)
    -----      ----------       --------------     ------   ---------   ----------    --------   -----------  -----------  --------
                                   CUT-OFF
   MORTGAGE    SCHEDULED             DATE                                MORTGAGE                   T.O.P.       MASTER       FIXED
     LOAN       MATURITY          PRINCIPAL                              INSURANCE     SERVICE     MORTGAGE     SERVICE    RETAINED
    NUMBER        DATE             BALANCE          LTV      SUBSIDY       CODE          FEE         LOAN         FEE         YIELD
   --------   -----------       --------------     ------   ---------   ----------    --------   -----------  -----------  --------
<S>             <C>            <C>               <C>         <C>          <C>        <C>          <C>           <C>           <C>
   4659771      1-Aug-27         $ 318,321.56      65.00                                0.250                    0.017        0.283
   4767821      1-Jun-28         $ 239,549.67      78.42                                0.250                    0.017        0.000
   4768085      1-Nov-29         $ 348,979.00      90.00                    06          0.250                    0.017        0.608
   4790576      1-Oct-27         $ 286,969.45      79.85                                0.250                    0.017        0.000
   4794825      1-May-28         $ 381,650.60      79.79                                0.250                    0.017        0.083
   4830087      1-Nov-29         $ 365,000.00      78.49                                0.250                    0.017        0.983
   4832965      1-Jul-28         $ 375,284.85      95.00                    06          0.250                    0.017        0.283
   4864504      1-Feb-29         $ 288,559.34      63.18                                0.250                    0.017        0.000
   4973704      1-Nov-29         $ 326,700.00      78.16                                0.250                    0.017        0.608
   4995945      1-Nov-29         $ 350,000.00      79.39                                0.250                    0.017        0.483
   4997688      1-Oct-29         $ 254,313.53      84.83                    11          0.250                    0.017        0.608
   5003229      1-Nov-29         $ 328,500.00      72.97                                0.250                    0.017        0.000
   5006699      1-Nov-29         $ 365,998.00      80.00                                0.250                    0.017        0.233
   5015803      1-Nov-29         $ 255,000.00      68.00                                0.250                    0.017        0.608
   5017821      1-Jul-29         $ 318,888.58      67.04                                0.250                    0.017        0.000
   5018546      1-Oct-29         $ 274,785.48      65.01                                0.250                    0.017        0.000
   5028319      1-Jun-29         $ 333,772.17      72.04                                0.250                    0.017        0.108
   5030165      1-Nov-29         $ 415,000.00      69.87                                0.250                    0.017        0.000
   5033606      1-Sep-29         $ 273,978.35      69.62                                0.250                    0.017        0.000
   5035305      1-Aug-29         $ 350,331.31      80.00                                0.250                    0.017        0.000
   5036294      1-Aug-29         $ 66,368.59       70.00                                0.250                    0.017        0.608
   5037389      1-Sep-29         $ 287,592.15      80.00                                0.250                    0.017        0.233
   5040581      1-Nov-29         $ 349,900.00      89.95                    06          0.250                    0.017        1.233
   5044291      1-Nov-29         $ 328,000.00      80.00                                0.250                    0.017        0.858
   5046407      1-Oct-29         $ 367,247.08      69.34                                0.250                    0.017        0.358
   5050859      1-Nov-29         $ 335,200.00      80.00                                0.250                    0.017        0.000
   5051196      1-Nov-29         $ 570,500.00      70.00                                0.250                    0.017        0.233
   5052541      1-Nov-29         $ 379,200.00      79.00                                0.250                    0.017        0.108
   5054591      1-Nov-29         $ 450,000.00      75.00                                0.250                    0.017        0.108
   5054938      1-Nov-29         $ 265,000.00      68.83                                0.250                    0.017        0.483
   5057664      1-Mar-29         $ 335,340.39      80.00                                0.250                    0.017        0.000
   5057854      1-Nov-28         $ 574,108.23      79.96                                0.250                    0.017        0.000
   5058143      1-Apr-29         $ 321,358.25      80.00                                0.250                    0.017        0.000
   5058204      1-May-29         $ 397,952.48      88.87                    06          0.250                    0.017        0.000
   5058515      1-Nov-29         $ 500,000.00      60.24                                0.250                    0.017        0.000
   5059189      1-Nov-29         $ 305,000.00      87.14                    01          0.250                    0.017        0.608
   5060679      1-Nov-29         $ 300,000.00      56.60                                0.250                    0.017        0.733
   5061525      1-Jun-29         $ 497,952.41      66.67                                0.250                    0.017        0.000
   5063283      1-Nov-29         $ 285,000.00      60.00                                0.250                    0.017        0.000
   5065625      1-Apr-29         $ 248,504.30      78.13                                0.250                    0.017        0.000
   5067915      1-Jun-29         $ 245,975.78      29.76                                0.250                    0.017        0.000
   5068282      1-Oct-29         $ 287,825.53      90.00                    12          0.250                    0.017        0.983
   5069209      1-Jun-29         $ 285,344.37      79.99                                0.250                    0.017        0.358
   5069929      1-May-29         $ 374,123.59      80.00                                0.250                    0.017        0.000
   5071101      1-Nov-29         $ 292,500.00      90.00                    06          0.250                    0.017        1.108
   5072386      1-Aug-29         $ 74,721.56       65.22                                0.250                    0.017        0.608
   5072879      1-Jul-29         $ 283,210.48      89.87                    06          0.250                    0.017        0.358
   5072983      1-Nov-29         $ 340,000.00      59.86                                0.250                    0.017        0.358
   5076984      1-Jun-29         $ 330,573.28      80.00                                0.250                    0.017        0.000
   5077016      1-Jun-29         $ 273,859.72      71.61                                0.250                    0.017        0.000
   5078809      1-Apr-29         $ 494,595.09      80.39                    33          0.250                    0.017        0.000
   5080077      1-Oct-29         $ 620,863.86      70.00                                0.250                    0.017        0.858
   5080626      1-Nov-29         $ 279,000.00      90.00                    06          0.250                    0.017        0.233
   5081746      1-Oct-29         $ 289,849.66      56.86                                0.250                    0.017        1.733
   5081911      1-Oct-29         $ 274,810.75      75.34                                0.250                    0.017        0.358
   5083047      1-Nov-29         $ 272,000.00      44.59                                0.250                    0.017        0.608
   5084858      1-Sep-29         $ 295,548.83      80.00                                0.250                    0.017        0.233
   5084904      1-Nov-29         $ 418,000.00      79.84                                0.250                    0.017        1.358
   5085492      1-Oct-29         $ 323,803.72      90.00                    33          0.250                    0.017        0.983
   5085862      1-Aug-29         $ 275,247.84      84.89                    33          0.250                    0.017        0.733
   5085983      1-Aug-29         $ 448,991.81      75.00                                0.250                    0.017        0.000
   5086058      1-Jun-29         $ 287,600.27      79.18                                0.250                    0.017        0.000
   5086102      1-Jul-29         $ 250,428.34      80.00                                0.250                    0.017        0.000
   5086356      1-Oct-29         $ 309,797.21      74.70                                0.250                    0.017        0.608
   5086800      1-Sep-29         $ 359,584.23      90.00                    01          0.250                    0.017        1.233
   5087335      1-Jun-29         $ 294,831.38      76.88                                0.250                    0.017        0.000
   5088392      1-Nov-29         $ 519,200.00      80.00                                0.250                    0.017        0.358
   5089378      1-Sep-29         $ 159,410.86      70.00                                0.250                    0.017        1.108
   5090081      1-Oct-29         $ 238,555.39      70.00                                0.250                    0.017        0.983
   5090848      1-Jun-29         $ 298,661.86      45.45                                0.250                    0.017        0.000
   5091703      1-Nov-29         $ 260,000.00      88.96                    06          0.250                    0.017        0.858
   5092272      1-Aug-29         $ 229,509.85      69.70                                0.250                    0.017        0.233
   5092446      1-Sep-29         $ 419,434.50      70.00                                0.250                    0.017        0.483
   5092454      1-Oct-29         $ 99,934.58       68.97                                0.250                    0.017        0.608
   5092585      1-Oct-29         $ 335,756.81      80.00                                0.250                    0.017        0.108
   5093074      1-Nov-29         $ 307,100.00      79.99                                0.250                    0.017        0.858
   5093126      1-Oct-29         $ 122,431.32      70.00                                0.250                    0.017        1.358
   5093246      1-Sep-29         $ 391,458.67      70.00                                0.250                    0.017        0.358
   5093295      1-Nov-29         $ 280,000.00      65.50                                0.250                    0.017        0.358
   5093431      1-Nov-29         $ 369,800.00      88.05                    24          0.250                    0.017        0.858
   5093442      1-Nov-29         $ 344,000.00      80.00                                0.250                    0.017        0.983
   5094387      1-Nov-29         $ 297,000.00      74.25                                0.250                    0.017        1.108
   5094901      1-Nov-29         $ 296,100.00      90.00                    33          0.250                    0.017        0.858
   5095332      1-Sep-29         $ 250,861.79      94.97                    01          0.250                    0.017        0.483
   5095406      1-Nov-29         $ 93,750.00       75.00                                0.250                    0.017        1.358
   5096177      1-Nov-29         $ 315,000.00      75.00                                0.250                    0.017        0.000
   5096216      1-Oct-29         $ 320,773.44      57.94                                0.250                    0.017        0.233
   5096297      1-Nov-29         $ 500,000.00      71.43                                0.250                    0.017        0.858
   5096351      1-Aug-29         $ 336,000.28      80.00                                0.250                    0.017        0.358
   5096353      1-Aug-29         $ 303,334.12      79.99                                0.250                    0.017        0.000
   5096400      1-Nov-29         $ 329,600.00      80.00                                0.250                    0.017        0.858
   5096420      1-Nov-29         $ 305,000.00      62.63                                0.250                    0.017        0.233
   5096495      1-Nov-29         $ 352,000.00      72.58                                0.250                    0.017        0.483
   5096725      1-Oct-29         $ 567,637.80      80.00                                0.250                    0.017        0.733
   5097138      1-Nov-29         $ 332,000.00      80.00                                0.250                    0.017        0.733
   5097549      1-Oct-29         $ 91,938.28       65.02                                0.250                    0.017        0.483
   5097935      1-Aug-29         $ 295,429.86      76.88                                0.250                    0.017        0.733
   5098004      1-Nov-29         $ 499,000.00      62.38                                0.250                    0.017        1.108
   5098081      1-Nov-29         $ 276,800.00      80.00                                0.250                    0.017        0.983
   5098112      1-Aug-29         $ 274,478.42      79.99                                0.250                    0.017        0.358
   5098121      1-Aug-29         $ 347,496.29      80.00                                0.250                    0.017        0.858
   5098477      1-Aug-29         $ 462,246.19      79.99                                0.250                    0.017        0.000
   5098499      1-Aug-29         $ 522,694.41      59.89                                0.250                    0.017        0.233
   5098716      1-Nov-29         $ 295,200.00      80.00                                0.250                    0.017        0.858
   5098774      1-Oct-29         $ 311,674.26      79.99                                0.250                    0.017        0.108
   5098859      1-Nov-29         $ 560,000.00      48.70                                0.250                    0.017        1.108
   5098998      1-Sep-28         $ 367,279.40      79.04                                0.250                    0.017        0.000
   5099469      1-Nov-29         $ 360,000.00      80.00                                0.250                    0.017        1.233
   5099485      1-Aug-29         $ 399,125.93      69.57                                0.250                    0.017        0.108
   5099715      1-Aug-29         $ 319,129.56      59.81                                0.250                    0.017        0.108
   5099749      1-Oct-29         $ 308,582.05      80.00                                0.250                    0.017        0.233
   5100046      1-Nov-29         $ 298,500.00      78.55                                0.250                    0.017        0.858
   5100091      1-Jun-29         $ 647,433.85      62.50                                0.250                    0.017        0.000
   5100148      1-Aug-29         $ 379,190.18      70.37                                0.250                    0.017        0.233
   5100166      1-Aug-29         $ 246,519.75      88.38                    24          0.250                    0.017        0.733
   5100245      1-Sep-29         $ 356,530.35      84.01                    11          0.250                    0.017        1.733
   5100339      1-Sep-29         $ 447,224.61      80.00                                0.250                    0.017        0.233
   5100349      1-Sep-29         $ 798,748.05      24.24                                0.250                    0.017        0.000
   5100432      1-Sep-29         $ 763,802.85      64.29                                0.250                    0.017        0.000
   5100449      1-Aug-29         $ 647,581.82      79.39                                0.250                    0.017        0.108
   5100457      1-Sep-29         $ 349,563.38      28.47                                0.250                    0.017        0.858
   5100523      1-Aug-29         $ 345,730.00      80.00                                0.250                    0.017        0.358
   5100533      1-Sep-29         $ 748,855.10      52.63                                0.250                    0.017        0.000
   5100548      1-Aug-19         $ 267,999.08      84.98                    11          0.250                    0.017        0.733
   5100694      1-Jul-29         $ 356,255.83      80.00                                0.250                    0.017        0.608
   5100792      1-Aug-29         $ 558,836.23      80.00                                0.250                    0.017        0.358
   5100820      1-Apr-29         $ 340,186.64      90.00                    11          0.250                    0.017        0.000
   5101155      1-Oct-28         $ 326,610.13      74.76                                0.250                    0.017        0.000
   5101245      1-Aug-29         $ 313,000.34      84.84                    11          0.250                    0.017        1.233
   5101262      1-Sep-29         $ 415,481.04      80.00                                0.250                    0.017        0.858
   5101267      1-Sep-29         $ 121,391.71      95.00                    01          0.250                    0.017        0.983
   5101272      1-Sep-29         $ 265,285.25      80.00                                0.250                    0.017        1.108
   5101318      1-Oct-29         $ 314,754.24      90.00                    11          0.250                    0.017        0.858
   5101321      1-Sep-29         $ 247,706.11      80.00                                0.250                    0.017        1.108
   5101475      1-Sep-29         $ 254,689.95      68.00                                0.250                    0.017        0.983
   5101789      1-Nov-29         $ 185,000.00      61.67                                0.250                    0.017        0.983
   5102127      1-Nov-29         $ 500,000.00      84.75                    06          0.250                    0.017        0.983
   5102748      1-Nov-29         $ 341,600.00      80.00                                0.250                    0.017        0.483
   5103440      1-Nov-29         $ 174,750.00      75.00                                0.250                    0.017        0.858
   5103579      1-Oct-29         $ 278,839.48      90.00                    11          0.250                    0.017        1.233
   5103999      1-Nov-29         $ 252,000.00      80.00                                0.250                    0.017        0.858
   5104137      1-Aug-29         $ 382,592.33      80.00                                0.250                    0.017        0.733
   5104426      1-Oct-29         $ 374,255.02      89.99                    13          0.250                    0.017        0.608
   5104464      1-Oct-29         $ 399,769.87      70.18                                0.250                    0.017        1.233
   5104635      1-Oct-29         $ 283,264.59      78.74                                0.250                    0.017        0.608
   5104653      1-Oct-29         $ 399,475.91      40.99                                0.250                    0.017        1.358
   5105136      1-Oct-29         $ 283,314.55      90.00                    12          0.250                    0.017        0.608
   5105217      1-Nov-29         $ 360,000.00      84.71                    11          0.250                    0.017        0.733
   5105337      1-Nov-29         $ 256,000.00      80.00                                0.250                    0.017        0.858
   5105794      1-Nov-29         $ 279,200.00      80.00                                0.250                    0.017        0.483
   5106020      1-Nov-29         $ 376,000.00      86.44                    06          0.250                    0.017        0.983
   5106074      1-Nov-29         $ 152,500.00      69.95                                0.250                    0.017        0.858
   5106114      1-Nov-29         $ 257,000.00      84.26                    12          0.250                    0.017        1.108
   5106429      1-Nov-29         $ 310,000.00      55.36                                0.250                    0.017        0.108
   5106430      1-Nov-29         $ 99,400.00       70.00                                0.250                    0.017        0.983
   5106755      1-Nov-29         $ 253,500.00      75.00                                0.250                    0.017        0.483
   5106773      1-Oct-29         $ 459,773.74      80.00                                0.250                    0.017        1.983
   5107021      1-Oct-29         $ 415,766.78      69.68                                0.250                    0.017        1.358
   5107061      1-Nov-29         $ 310,000.00      79.90                                0.250                    0.017        0.608
   5107163      1-Sep-29         $ 274,148.71      90.00                    11          0.250                    0.017        0.733
   5107195      1-Sep-29         $ 299,542.04      79.16                                0.250                    0.017        0.000
   5107210      1-Sep-29         $ 499,243.79      80.00                                0.250                    0.017        0.608
   5107217      1-Sep-29         $ 366,777.99      78.19                                0.250                    0.017        0.733
   5107229      1-Nov-29         $ 319,500.00      90.00                    06          0.250                    0.017        0.358
   5107233      1-Jul-29         $ 388,004.42      90.00                    06          0.250                    0.017        0.000
   5107246      1-Jun-29         $ 637,595.27      77.51                                0.250                    0.017        0.000
   5107256      1-Sep-29         $ 396,408.90      79.99                                0.250                    0.017        0.000
   5107268      1-Jun-29         $ 476,308.39      80.00                                0.250                    0.017        0.000
   5107276      1-Nov-29         $ 266,500.00      65.00                                0.250                    0.017        1.233
   5107303      1-Sep-29         $ 404,440.73      73.64                                0.250                    0.017        0.358
   5107311      1-Mar-29         $ 285,866.11      87.33                    17          0.250                    0.017        0.000
   5107320      1-Aug-29         $ 549,702.70      80.00                                0.250                    0.017        0.000
   5107880      1-Nov-29         $ 292,000.00      84.64                    13          0.250                    0.017        0.983
   5108043      1-Oct-29         $ 319,306.45      90.00                    01          0.250                    0.017        0.983
   5108096      1-Nov-29         $ 312,107.59      54.00     GD 1YR                     0.250                    0.017        0.608
   5108598      1-Nov-29         $ 650,000.00      77.38                                0.250                    0.017        0.608
   5108628      1-Nov-29         $ 260,000.00      80.00                                0.250                    0.017        0.608
   5108684      1-Nov-29         $ 263,400.00      76.70                                0.250                    0.017        0.858
   5108746      1-Nov-29         $ 270,750.00      80.82                    33          0.250                    0.017        0.608
   5108888      1-Nov-29         $ 480,000.00      80.00                                0.250                    0.017        0.608
   5109291      1-Jun-29         $ 281,982.36      95.00                    12          0.250                    0.017        0.000
   5109605      1-Nov-29         $ 280,000.00      66.67                                0.250                    0.017        0.733
   5109631      1-Nov-29         $ 285,000.00      95.00                    33          0.250                    0.017        1.483
   5109763      1-Oct-29         $ 167,884.38      80.00                                0.250                    0.017        0.358
   5109789      1-Sep-29         $ 274,620.26      74.53                                0.250                    0.017        0.358
   5109796      1-Oct-29         $ 283,009.98      80.00                                0.250                    0.017        0.483
   5110328      1-Nov-29         $ 270,000.00      61.36                                0.250                    0.017        1.483
   5110396      1-Nov-29         $ 267,200.00      80.00                                0.250                    0.017        0.483
   5110743      1-Oct-29         $ 282,119.99      88.22                    33          0.250                    0.017        0.733
   5110757      1-Oct-29         $ 391,256.66      90.00                    13          0.250                    0.017        0.858
   5110993      1-Nov-29         $ 385,000.00      88.51                    24          0.250                    0.017        0.733
   5111441      1-Nov-29         $ 364,000.00      63.86                                0.250                    0.017        1.483
   5111492      1-Nov-29         $ 460,000.00      80.00                                0.250                    0.017        0.358
   5111573      1-Oct-29         $ 295,021.16      80.00                                0.250                    0.017        0.983
   5111625      1-Nov-29         $ 367,200.00      80.00                                0.250                    0.017        0.483
   5112069      1-Oct-29         $ 342,992.08      80.00                                0.250                    0.017        0.983
   5112732      1-Nov-29         $ 292,500.00      75.00                                0.250                    0.017        0.858
   5112937      1-Nov-29         $ 336,100.00      76.39                                0.250                    0.017        0.000
   5114815      1-Nov-29         $ 650,000.00      75.58                                0.250                    0.017        0.733
   5114985      1-Nov-29         $ 300,000.00      67.57                                0.250                    0.017        0.608
   5115277      1-Nov-29         $ 425,000.00      45.21                                0.250                    0.017        0.000
   5115553      1-Oct-29         $ 279,112.60      91.88                    13          0.250                    0.017        0.483
   5116790      1-Nov-29         $ 306,000.00      90.00                    13          0.250                    0.017        1.358
   5116836      1-Nov-29         $ 147,000.00      70.00                                0.250                    0.017        1.108
   5117218      1-Nov-29         $ 273,750.00      74.39                                0.250                    0.017        1.233
   5118219      1-Nov-29         $ 387,500.00      50.00                                0.250                    0.017        0.608
   5119359      1-Nov-29         $ 348,750.00      75.00                                0.250                    0.017        0.733
   6534311      1-Dec-27         $ 245,425.92      75.76                                0.250                    0.017        0.000
   6568743      1-Jun-29         $ 746,965.35      61.48                                0.250                    0.017        0.000
   6629319      1-Sep-28         $ 767,977.38      65.00                                0.250                    0.017        0.000
   6715857      1-Sep-29         $ 328,268.51      89.98                    01          0.250                    0.017        0.608
   6737125      1-Sep-29         $ 419,326.27      76.64                                0.250                    0.017        0.000
   6824202      1-Jul-28         $ 295,544.93      71.43                                0.250                    0.017        0.000
   6862139      1-May-28         $ 326,105.69      84.87                    17          0.250                    0.017        0.000
   6910126      1-Apr-29         $ 442,432.35      84.84                    01          0.250                    0.017        0.000
   6911728      1-Mar-29         $ 387,689.15      80.00                                0.250                    0.017        0.000
   6915855      1-Aug-29         $ 417,820.15      33.77                                0.250                    0.017        0.000
   6924027      1-Aug-29         $ 458,969.42      80.00                                0.250                    0.017        0.000
   7024734      1-Sep-28         $ 398,143.79      70.00                                0.250                    0.017        0.000
   7070553      1-Oct-29         $ 503,670.31      80.00                                0.250                    0.017        0.608
   7075819      1-Apr-29         $ 566,751.83      78.39                                0.250                    0.017        0.000
   7116911      1-Sep-28         $ 387,296.03      70.00                                0.250                    0.017        0.000
   7128203      1-Sep-28         $ 237,273.48      71.64                                0.250                    0.017        0.000
   7182233      1-Nov-29         $ 542,675.00      80.00                                0.250                    0.017        0.108
   7189403      1-Dec-28         $ 285,045.65      94.99                    06          0.250                    0.017        0.233
   7224423      1-Apr-29         $ 437,169.96      67.85                                0.250                    0.017        0.000
   7237000      1-Sep-29         $ 440,343.37      70.56                                0.250                    0.017        0.000
   7270184      1-Dec-28         $ 258,899.24      85.00                    24          0.250                    0.017        0.000
   7296269      1-Jul-29         $ 394,652.48      90.00                    01          0.250                    0.017        0.000
   7312289      1-Jan-29         $ 295,584.13      79.47                                0.250                    0.017        0.000
   7316054      1-Dec-28         $ 414,150.80      79.92                                0.250                    0.017        0.000
   7350535      1-Dec-28         $ 314,678.38      66.88                                0.250                    0.017        0.000
   7351010      1-Jan-29         $ 262,769.40      73.61                                0.250                    0.017        0.000
   7355665      1-Dec-28         $ 295,165.78      71.81                                0.250                    0.017        0.000
   7358166      1-Sep-29         $ 448,830.73      72.50                                0.250                    0.017        0.000
   7375964      1-Sep-29         $ 404,366.23      79.41                                0.250                    0.017        0.000
   7396134      1-Feb-29         $ 341,357.56      90.00                    01          0.250                    0.017        0.108
   7403481      1-Sep-29         $ 449,362.75      76.27                                0.250                    0.017        0.233
   7423872      1-Oct-29         $ 459,706.67      75.91                                0.250                    0.017        0.733
   7425698      1-Jan-29         $ 247,946.47      33.83                                0.250                    0.017        0.000
   7434791      1-Oct-29         $ 408,739.20      79.94                                0.250                    0.017        0.733
   7476818      1-Jan-29         $ 488,244.18      61.50                                0.250                    0.017        0.000
   7482028      1-Aug-29         $ 648,469.59      70.65                                0.250                    0.017        0.000
   7486180      1-Nov-29         $ 518,000.00      64.75                                0.250                    0.017        0.983
   7491071      1-Aug-29         $ 363,385.40      80.00                                0.250                    0.017        0.000
   7502579      1-Sep-29         $ 400,565.63      76.57                                0.250                    0.017        0.108
   7503191      1-Jan-29         $ 302,363.60      75.87                                0.250                    0.017        0.000
   7541889      1-Jul-29         $ 265,135.56      89.87                    11          0.250                    0.017        0.000
   7559137      1-Sep-29         $ 968,604.84      70.00                                0.250                    0.017        0.000
   7564486      1-Jun-29         $ 313,725.47      88.73                    17          0.250                    0.017        0.000
   7566154      1-Oct-29         $ 334,775.22      74.44                                0.250                    0.017        0.483
   7567024      1-Aug-29         $ 264,919.85      90.00                    17          0.250                    0.017        0.108
   7574491      1-Mar-29         $ 256,143.41      64.50                                0.250                    0.017        0.000
   7577926      1-Sep-29         $ 266,666.30      95.00                    06          0.250                    0.017        0.733
   7585313      1-Oct-29         $ 247,078.23      95.00                    11          0.250                    0.017        0.983
   7587740      1-Sep-29         $ 286,668.60      90.00                    01          0.250                    0.017        0.108
   7589780      1-Nov-29         $ 440,000.00      67.42                                0.250                    0.017        0.000
   7590510      1-Jul-29         $ 302,823.46      80.00                                0.250                    0.017        0.000
   7593261      1-Nov-29         $ 319,794.00      80.00                                0.250                    0.017        0.983
   7600988      1-Sep-29         $ 424,318.26      66.82                                0.250                    0.017        0.000
   7607156      1-Oct-29         $ 359,690.49      80.00                                0.250                    0.017        0.733
   7611571      1-Oct-29         $ 258,192.19      95.00                    06          0.250                    0.017        0.000
   7612825      1-Oct-29         $ 305,607.70      90.00                    33          0.250                    0.017        0.233
   7614015      1-Apr-29         $ 343,128.15      75.00                                0.250                    0.017        0.000
   7616456      1-Oct-29         $ 229,864.21      64.55                                0.250                    0.017        1.108
   7617792      1-Oct-29         $ 258,839.01      84.92                    11          0.250                    0.017        0.858
   7618286      1-Oct-29         $ 507,350.60      80.00                                0.250                    0.017        0.358
   7618808      1-Oct-29         $ 269,794.55      79.79                                0.250                    0.017        0.000
   7620145      1-Jul-29         $ 547,697.53      70.00                                0.250                    0.017        0.000
   7620255      1-Oct-29         $ 199,805.61      61.92                                0.250                    0.017        0.000
   7620647      1-Sep-29         $ 426,394.18      76.75                                0.250                    0.017        0.000
   7623467      1-Sep-29         $ 429,239.14      74.15                                0.250                    0.017        0.000
   7631873      1-Oct-29         $ 294,936.56      80.00                                0.250                    0.017        0.858
   7635097      1-Nov-29         $ 350,000.00      53.51                                0.250                    0.017        0.000
   7649039      1-Sep-29         $ 303,580.21      80.00                                0.250                    0.017        0.358
   7652059      1-Nov-29         $ 265,600.00      80.00                                0.250                    0.017        0.608
   7652605      1-Sep-29         $ 522,727.16      80.00                                0.250                    0.017        0.358
   7658476      1-Sep-29         $ 419,309.45      80.00                                0.250                    0.017        0.000
   7658660      1-Sep-29         $ 639,023.03      80.00                                0.250                    0.017        0.000
   7659050      1-Aug-29         $ 313,706.71      80.00                                0.250                    0.017        0.358
   7660719      1-Jun-29         $ 416,888.05      90.00                    17          0.250                    0.017        0.000
   7661714      1-Nov-29         $ 250,000.00      62.89                                0.250                    0.017        0.733
   7667689      1-Nov-29         $ 320,000.00      80.00                                0.250                    0.017        0.483
   7671951      1-Oct-29         $ 367,294.97      80.00                                0.250                    0.017        0.108
   7672684      1-Sep-29         $ 257,128.84      95.00                    11          0.250                    0.017        0.858
   7674901      1-Jun-29         $ 580,054.95      80.00                                0.250                    0.017        0.000
   7675532      1-Nov-29         $ 358,620.00      90.00                    06          0.250                    0.017        0.108
   7675966      1-Jun-29         $ 275,288.75      90.00                    06          0.250                    0.017        0.000
   7679162      1-Sep-29         $ 299,564.36      65.17                                0.250                    0.017        0.108
   7687859      1-Oct-29         $ 278,803.08      90.00                    11          0.250                    0.017        0.233
   7688914      1-Oct-29         $ 299,836.13      92.88                    11          0.250                    0.017        1.483
   7689089      1-Nov-29         $ 280,000.00      78.21                                0.250                    0.017        0.358
   7689466      1-Oct-29         $ 304,297.83      80.00                                0.250                    0.017        0.733
   7691366      1-Oct-29         $ 399,655.61      76.20                                0.250                    0.017        0.000
   7694080      1-Jul-29         $ 266,947.68      78.75                                0.250                    0.017        0.000
   7699171      1-Oct-29         $ 316,761.86      90.00                    01          0.250                    0.017        0.358
   7704700      1-Jul-29         $ 338,929.41      32.38                                0.250                    0.017        0.000
   7708774      1-Nov-29         $ 358,850.00      67.85                                0.250                    0.017        0.108
   7710572      1-Oct-29         $ 343,807.15      79.81                                0.250                    0.017        1.358
   7712235      1-Jul-29         $ 344,063.20      90.00                    06          0.250                    0.017        0.000
   7714240      1-Oct-29         $ 335,796.45      80.00                                0.250                    0.017        0.983
   7714569      1-Oct-29         $ 268,310.49      93.71                    01          0.250                    0.017        0.233
   7721955      1-Oct-29         $ 287,806.76      80.00                                0.250                    0.017        0.483
   7728559      1-Oct-29         $ 330,909.86      78.19                                0.250                    0.017        0.733
   7729910      1-Nov-29         $ 239,500.00      59.97                                0.250                    0.017        0.000
   7732534      1-Sep-29         $ 290,807.64      80.00                                0.250                    0.017        0.483
   7735237      1-Jul-29         $ 317,296.36      79.99                                0.250                    0.017        0.000
   7735325      1-Oct-29         $ 327,548.00      80.00                                0.250                    0.017        0.733
   7735726      1-Oct-29         $ 299,771.72      45.79                                0.250                    0.017        0.000
   7737097      1-Aug-29         $ 335,148.30      80.00                                0.250                    0.017        0.000
   7743616      1-Nov-29         $ 325,848.00      75.00                                0.250                    0.017        0.358
   7754218      1-Aug-29         $ 399,168.73      80.00                                0.250                    0.017        0.358
   7756536      1-Nov-29         $ 374,000.00      86.36                    11          0.250                    0.017        0.483
   7758663      1-Oct-29         $ 412,108.94      79.99                                0.250                    0.017        0.233
   7759123      1-Jun-29         $ 399,416.88      72.91                                0.250                    0.017        0.000
   7760422      1-Jul-29         $ 602,144.60      80.00                                0.250                    0.017        0.000
   7762387      1-Nov-29         $ 346,880.00      80.00                                0.250                    0.017        0.108
   7766662      1-Aug-29         $ 307,160.36      90.00                    11          0.250                    0.017        0.358
   7766733      1-Sep-29         $ 544,081.65      53.33                                0.250                    0.017        0.000
   7768569      1-Jul-29         $ 478,561.66      80.00                                0.250                    0.017        0.000
   7768742      1-Oct-29         $ 360,418.95      80.00                                0.250                    0.017        0.108
   7769583      1-Jul-29         $ 473,428.89      70.00                                0.250                    0.017        0.000
   7775412      1-Sep-29         $ 363,371.57      80.00                                0.250                    0.017        0.108
   7776728      1-Oct-29         $ 270,848.07      92.29                    17          0.250                    0.017        1.358
   7778499      1-Jun-29         $ 354,758.81      80.00                                0.250                    0.017        0.358
   7779886      1-Sep-29         $ 266,033.03      69.56                                0.250                    0.017        0.000
   7784839      1-Jul-29         $ 329,305.31      77.74                                0.250                    0.017        0.000
   7786036      1-Oct-29         $ 479,066.52      70.00                                0.250                    0.017        0.000
   7786460      1-Oct-29         $ 499,647.11      77.67                                0.250                    0.017        0.233
   7787875      1-Jul-29         $ 298,978.77      79.99                                0.250                    0.017        0.000
   7789847      1-Oct-29         $ 423,689.66      80.00                                0.250                    0.017        0.733
   7789889      1-Oct-29         $ 279,807.31      79.04                                0.250                    0.017        0.358
   7790389      1-Sep-29         $ 299,585.73      52.17                                0.250                    0.017        0.358
   7795857      1-Oct-29         $ 304,795.35      69.00                                0.250                    0.017        0.483
   7798834      1-Sep-29         $ 247,121.57      89.96                    11          0.250                    0.017        1.358
   7809637      1-Aug-29         $ 339,293.41      60.28                                0.250                    0.017        0.358
   7812668      1-Aug-29         $ 317,663.56      95.00                    06          0.250                    0.017        1.358
   7812919      1-Oct-29         $ 329,755.09      66.00                                0.250                    0.017        0.000
   7813450      1-Oct-29         $ 284,813.57      75.00                                0.250                    0.017        0.608
   7815785      1-Oct-29         $ 589,276.80      80.00                                0.250                    0.017        0.233
   7816000      1-Sep-29         $ 387,004.10      50.00                                0.250                    0.017        0.733
   7816019      1-Sep-29         $ 331,705.59      80.00                                0.250                    0.017        0.233
   7819178      1-Oct-29         $ 301,024.97      79.97                                0.250                    0.017        0.108
   7819504      1-Oct-29         $ 549,630.96      51.16                                0.250                    0.017        0.483
   7822381      1-Oct-29         $ 337,136.19      90.00                    06          0.250                    0.017        0.983
   7823285      1-Oct-29         $ 311,795.91      80.00                                0.250                    0.017        0.608
   7823786      1-Sep-29         $ 319,579.94      80.00                                0.250                    0.017        0.608
   7824897      1-Oct-29         $ 649,585.52      78.79                                0.250                    0.017        0.733
   7827740      1-Sep-29         $ 283,118.29      90.00                    06          0.250                    0.017        0.483
   7829276      1-Oct-29         $ 294,126.24      90.00                    01          0.250                    0.017        1.108
   7831172      1-Sep-29         $ 268,672.92      74.72                                0.250                    0.017        0.983
   7831441      1-Sep-29         $ 449,362.75      61.22                                0.250                    0.017        0.233
   7834200      1-Oct-29         $ 319,785.28      64.45                                0.250                    0.017        0.483
   7838590      1-Oct-29         $ 580,147.07      79.99                                0.250                    0.017        0.000
   7840812      1-Oct-29         $ 422,160.55      80.00                                0.250                    0.017        0.483
   7841790      1-Oct-29         $ 274,824.65      79.71                                0.250                    0.017        0.733
   7845116      1-Aug-29         $ 325,637.38      90.00                    13          0.250                    0.017        0.858
   7845457      1-Oct-29         $ 327,630.02      89.99                    01          0.250                    0.017        0.483
   7846149      1-Oct-29         $ 299,813.53      75.00                                0.250                    0.017        0.858
   7847091      1-Sep-29         $ 616,647.29      65.00                                0.250                    0.017        0.358
   7847349      1-Aug-29         $ 277,319.13      79.88                                0.250                    0.017        0.000
   7852197      1-Oct-29         $ 287,786.26      80.00                                0.250                    0.017        0.000
   7853021      1-Oct-29         $ 288,745.16      80.00                                0.250                    0.017        0.358
   7853533      1-Nov-29         $ 500,000.00      69.44                                0.250                    0.017        0.233
   7853610      1-Sep-29         $ 499,392.05      76.92                                0.250                    0.017        0.983
   7855572      1-Nov-29         $ 275,000.00      63.95                                0.250                    0.017        0.983
   7856337      1-Sep-29         $ 179,738.61      39.13                                0.250                    0.017        0.108
   7856830      1-Oct-29         $ 403,505.41      85.00                    01          0.250                    0.017        0.983
   7857931      1-Sep-29         $ 373,456.90      71.92                                0.250                    0.017        0.108
   7858562      1-Nov-29         $ 269,600.00      80.00                                0.250                    0.017        1.108
   7858861      1-Oct-29         $ 251,839.31      80.00                                0.250                    0.017        0.733
   7859084      1-Oct-29         $ 299,813.53      80.00                                0.250                    0.017        0.858
   7860408      1-Sep-29         $ 69,912.68       56.22                                0.250                    0.017        0.858
   7860492      1-Sep-29         $ 319,590.50      80.00                                0.250                    0.017        0.733
   7861359      1-Sep-29         $ 244,694.37      59.76                                0.250                    0.017        0.858
   7862059      1-Oct-29         $ 326,052.36      39.07                                0.250                    0.017        0.983
   7862566      1-Oct-29         $ 254,357.32      94.97                    01          0.250                    0.017        1.358
   7866012      1-Sep-29         $ 277,045.02      95.00                    01          0.250                    0.017        0.733
   7867447      1-Oct-29         $ 275,810.06      80.00                                0.250                    0.017        0.358
   7867944      1-Oct-29         $ 275,828.45      80.00                                0.250                    0.017        0.858
   7868313      1-Sep-29         $ 299,564.36      80.00                                0.250                    0.017        0.108
   7868582      1-Oct-29         $ 267,537.83      94.97                    17          0.250                    0.017        0.983
   7868706      1-Nov-29         $ 650,000.00      43.33                                0.250                    0.017        0.358
   7868885      1-Nov-29         $ 290,000.00      46.26                                0.250                    0.017        0.483
   7869872      1-Oct-29         $ 307,093.81      70.00                                0.250                    0.017        0.483
   7870550      1-Nov-29         $ 300,000.00      79.05                                0.250                    0.017        0.483
   7870604      1-Oct-29         $ 457,251.80      80.00                                0.250                    0.017        0.000
   7871908      1-Oct-29         $ 335,468.97      90.00                    06          0.250                    0.017        0.358
   7872760      1-Sep-29         $ 383,533.09      79.83                                0.250                    0.017        0.983
   7873638      1-Oct-29         $ 499,647.11      39.22                                0.250                    0.017        0.233
   7876398      1-Sep-29         $ 367,552.56      80.00                                0.250                    0.017        0.983
   7876877      1-Sep-29         $ 349,491.75      63.06                                0.250                    0.017        0.108
   7876934      1-Nov-29         $ 322,934.00      80.00                                0.250                    0.017        0.608
   7877166      1-Aug-29         $ 279,474.25      62.22                                0.250                    0.017        0.858
   7877301      1-Oct-29         $ 899,533.42      67.92                                0.250                    0.017        1.733
   7879164      1-Oct-29         $ 399,695.63      72.73                                0.250                    0.017        0.000
   7880247      1-Oct-29         $ 189,869.25      52.05                                0.250                    0.017        0.358
   7881957      1-Nov-29         $ 298,000.00      80.00                                0.250                    0.017        0.233
   7882487      1-Nov-29         $ 580,000.00      69.88                                0.250                    0.017        0.000
   7883194      1-Oct-29         $ 289,824.32      84.06                    01          0.250                    0.017        0.983
   7883716      1-Oct-29         $ 335,785.74      79.06                                0.250                    0.017        0.733
   7883886      1-Oct-29         $ 66,107.82       70.00                                0.250                    0.017        0.733
   7885625      1-Sep-29         $ 325,479.39      67.20                                0.250                    0.017        0.858
   7887097      1-Oct-29         $ 284,813.57      69.51                                0.250                    0.017        0.608
   7887927      1-Oct-29         $ 251,608.86      95.00                    11          0.250                    0.017        1.358
   7892045      1-Oct-29         $ 58,966.92       48.97                                0.250                    0.017        1.358
   7893968      1-Sep-29         $ 648,931.29      71.09                                0.250                    0.017        0.000
   7894586      1-Nov-29         $ 301,880.00      80.00                                0.250                    0.017        0.358
   7894877      1-Sep-29         $ 299,625.76      75.19                                0.250                    0.017        0.858
   7895734      1-Nov-29         $ 284,000.00      80.00                                0.250                    0.017        0.000
   7896737      1-Sep-29         $ 302,003.04      80.00                                0.250                    0.017        0.608
   7897576      1-Sep-29         $ 119,058.73      55.44                                0.250                    0.017        1.108
   7898137      1-Nov-29         $ 448,000.00      80.00                                0.250                    0.017        0.733
   7898770      1-Oct-29         $ 293,305.21      95.00                    11          0.250                    0.017        0.983
   7901751      1-Oct-29         $ 399,763.84      79.21                                0.250                    0.017        1.108
   7902090      1-Sep-29         $ 291,644.95      80.00                                0.250                    0.017        0.983
   7902487      1-Oct-29         $ 299,831.82      79.99                                0.250                    0.017        1.358
   7902583      1-Oct-29         $ 354,719.03      75.53                                0.250                    0.017        0.858
   7903885      1-Sep-29         $ 368,573.87      90.00                    11          0.250                    0.017        1.233
   7904202      1-Oct-29         $ 267,614.79      85.00                    11          0.250                    0.017        1.858
   7905271      1-Oct-29         $ 359,776.24      75.00                                0.250                    0.017        0.858
   7906856      1-Nov-29         $ 300,000.00      80.00                                0.250                    0.017        0.858
   7907034      1-Oct-29         $ 249,848.55      23.26                                0.250                    0.017        0.983
   7907559      1-Nov-29         $ 448,000.00      70.00                                0.250                    0.017        0.608
   7907708      1-Oct-29         $ 275,828.45      73.60                                0.250                    0.017        0.858
   7907945      1-Nov-29         $ 304,000.00      80.00                                0.250                    0.017        0.608
   7909713      1-Oct-29         $ 289,819.75      63.04                                0.250                    0.017        0.858
   7909945      1-Oct-29         $ 337,290.23      75.00                                0.250                    0.017        0.858
   7912313      1-Nov-29         $ 300,000.00      80.00                                0.250                    0.017        0.108
   7912600      1-Oct-29         $ 439,704.77      80.00                                0.250                    0.017        0.483
   7913281      1-Oct-29         $ 326,307.24      62.85                                0.250                    0.017        1.108
   7913717      1-Sep-29         $ 297,918.25      95.00                    11          0.250                    0.017        0.733
   7914954      1-Oct-29         $ 431,574.63      80.00                                0.250                    0.017        0.733
   7915191      1-Oct-29         $ 415,706.40      80.00                                0.250                    0.017        0.233
   7915267      1-Nov-29         $ 256,000.00      94.81                    11          0.250                    0.017        0.983
   7915878      1-Oct-29         $ 275,832.80      73.40                                0.250                    0.017        0.983
   7916388      1-Nov-29         $ 320,000.00      80.00                                0.250                    0.017        0.483
   7917886      1-Oct-29         $ 387,732.98      80.00                                0.250                    0.017        0.358
   7918631      1-Oct-29         $ 310,316.68      90.00                    11          0.250                    0.017        1.108
   7918930      1-Oct-29         $ 299,788.26      77.12                                0.250                    0.017        0.233
   7919833      1-Nov-29         $ 564,000.00      56.40                                0.250                    0.017        0.483
   7919918      1-Oct-29         $ 349,771.05      59.83                                0.250                    0.017        0.608
   7921048      1-Oct-29         $ 79,951.54       69.57                                0.250                    0.017        0.983
   7921165      1-Nov-29         $ 363,150.00      90.00                    11          0.250                    0.017        0.000
   7921639      1-Nov-29         $ 448,000.00      80.00                                0.250                    0.017        0.483
   7921719      1-Oct-29         $ 327,774.27      80.00                                0.250                    0.017        0.358
   7922217      1-Oct-29         $ 114,933.83      48.94                                0.250                    0.017        1.233
   7923285      1-Oct-29         $ 299,738.26      57.80                                0.250                    0.017        0.233
   7923663      1-Oct-29         $ 377,265.36      34.32                                0.250                    0.017        0.858
   7923725      1-Oct-29         $ 159,103.56      80.00                                0.250                    0.017        0.983
   7923853      1-Oct-29         $ 329,389.83      80.00                                0.250                    0.017        0.733
   7924130      1-Oct-29         $ 265,511.75      72.67                                0.250                    0.017        0.733
   7924217      1-Oct-29         $ 394,872.69      90.00                    06          0.250                    0.017        1.233
   7924232      1-Oct-29         $ 399,751.38      89.89                    01          0.250                    0.017        0.858
   7924536      1-Oct-29         $ 371,743.99      80.00                                0.250                    0.017        0.358
   7925260      1-Nov-29         $ 324,000.00      80.00                                0.250                    0.017        0.483
   7925824      1-Oct-29         $ 291,523.29      89.82                    33          0.250                    0.017        0.983
   7926321      1-Oct-29         $ 517,152.29      75.00                                0.250                    0.017        1.233
   7926929      1-Oct-29         $ 328,820.29      70.00                                0.250                    0.017        1.483
   7927025      1-Nov-29         $ 600,000.00      80.00                                0.250                    0.017        0.858
   7927855      1-Oct-29         $ 149,906.77      38.86                                0.250                    0.017        0.858
   7928413      1-Oct-19         $ 499,151.13      64.52                                0.250                    0.017        0.483
   7928499      1-Nov-29         $ 400,000.00      68.97                                0.250                    0.017        0.358
   7928635      1-Oct-29         $ 327,846.10      90.00                    16          0.250                    0.017        0.858
   7928714      1-Oct-29         $ 774,530.50      57.41                                0.250                    0.017        0.983
   7928850      1-Oct-29         $ 329,784.13      76.74                                0.250                    0.017        0.608
   7929369      1-Oct-29         $ 451,711.77      80.00                                0.250                    0.017        0.733
   7929657      1-Nov-29         $ 520,000.00      80.00                                0.250                    0.017        0.608
   7929845      1-Oct-29         $ 399,769.87      72.73                                0.250                    0.017        1.233
   7930177      1-Oct-29         $ 387,582.98      80.00                                0.250                    0.017        0.358
   7930751      1-Nov-29         $ 260,000.00      55.91                                0.250                    0.017        0.108
   7931830      1-Oct-29         $ 429,732.73      78.90                                0.250                    0.017        0.858
   7933215      1-Nov-29         $ 374,500.00      70.00                                0.250                    0.017        0.608
   7935262      1-Oct-29         $ 419,732.18      80.00                                0.250                    0.017        0.733
   7935547      1-Oct-29         $ 279,409.40      90.00                    06          0.250                    0.017        0.483
   7935615      1-Nov-29         $ 742,000.00      70.00                                0.250                    0.017        0.483
   7935907      1-Oct-29         $ 309,792.00      88.57                    06          0.250                    0.017        0.483
   7938448      1-Nov-29         $ 295,000.00      79.73                                0.250                    0.017        0.483
   7938649      1-Oct-29         $ 433,730.25      74.99                                0.250                    0.017        0.858
   7938728      1-Oct-29         $ 303,820.52      80.00                                0.250                    0.017        1.108
   7938745      1-Nov-29         $ 276,000.00      80.00                                0.250                    0.017        0.483
   7939321      1-Oct-29         $ 417,476.74      75.00                                0.250                    0.017        0.608
   7940526      1-Oct-29         $ 364,748.81      38.50                                0.250                    0.017        0.358
   7941476      1-Nov-29         $ 345,500.00      79.99                                0.250                    0.017        0.358
   7941514      1-Nov-29         $ 350,000.00      75.27                                0.250                    0.017        0.733
   7941663      1-Nov-29         $ 255,000.00      75.00                                0.250                    0.017        0.983
   7942237      1-Oct-29         $ 81,220.76       75.00                                0.250                    0.017        0.983
   7942973      1-Nov-29         $ 283,500.00      70.00                                0.250                    0.017        0.483
   7943029      1-Oct-29         $ 283,832.33      80.00                                0.250                    0.017        1.108
   7943591      1-Oct-29         $ 399,744.93      64.78                                0.250                    0.017        0.733
   7943980      1-Nov-29         $ 279,000.00      73.61                                0.250                    0.017        0.983
   7944256      1-Nov-29         $ 256,000.00      80.00                                0.250                    0.017        0.733
   7945015      1-Oct-29         $ 445,700.74      80.00                                0.250                    0.017        0.483
   7946523      1-Oct-29         $ 299,822.88      75.00                                0.250                    0.017        1.108
   7950027      1-Oct-29         $ 552,138.59      65.00                                0.250                    0.017        0.608
   7950049      1-Nov-29         $ 302,400.00      80.00                                0.250                    0.017        0.733
   7950909      1-Oct-29         $ 324,776.33      45.77                                0.250                    0.017        0.358
   7951872      1-Nov-29         $ 450,000.00      60.00                                0.250                    0.017        0.483
   7953103      1-Nov-29         $ 282,000.00      94.84                    11          0.250                    0.017        0.233
   7953652      1-Nov-29         $ 288,000.00      80.00                                0.250                    0.017        0.233
   7953752      1-Nov-29         $ 320,000.00      80.00                                0.250                    0.017        0.733
   7955332      1-Nov-29         $ 250,000.00      69.44                                0.250                    0.017        0.858
   7955347      1-Nov-29         $ 507,200.00      80.00                                0.250                    0.017        0.483
   7955926      1-Nov-29         $ 468,000.00      80.00                                0.250                    0.017        0.358
   7956071      1-Nov-29         $ 299,200.00      80.00                                0.250                    0.017        0.483
   7956497      1-Nov-29         $ 600,000.00      48.47                                0.250                    0.017        0.858
   7957502      1-Nov-29         $ 275,000.00      73.51                                0.250                    0.017        0.483
   7958355      1-Nov-29         $ 342,404.00      49.96                                0.250                    0.017        0.233
   7963132      1-Nov-29         $ 75,000.00       63.83                                0.250                    0.017        0.733
   7963316      1-Nov-29         $ 262,800.00      80.00                                0.250                    0.017        0.108
   7963492      1-Nov-29         $ 710,000.00      80.00                                0.250                    0.017        0.983

                               $179,426,178.20




    COUNT:                                   511
     WAC:                            7.908086151
     WAM:                            357.3406105
    WALTV:                           74.94939734

</TABLE>



<PAGE>




                                   EXHIBIT F-3

           [Schedule of Mortgage Loans Serviced by Other Servicers]


<TABLE>
NASCOR
NMI / 1999-26  Exhibit F-3
30 YEAR FIXED RATE NON RELOCATION  LOANS

<CAPTION>


(i)             (ii)                                              (iii)        (iv)          (v)           (vi)          (vii)
- -----           ---------------------------  -----     -----    --------     --------     --------      ----------      --------
                                                                                             NET
MORTGAGE                                                                     MORTGAGE     MORTGAGE       CURRENT        ORIGINAL
LOAN                                                    ZIP     PROPERTY     INTEREST     INTEREST       MONTHLY        TERM TO
NUMBER          CITY                         STATE     CODE       TYPE         RATE         RATE         PAYMENT        MATURITY
- --------        --------------------------------------------------------     --------     --------      ----------      --------
<S>            <C>                          <C>      <C>         <C>          <C>          <C>         <C>              <C>
4851347         CHAPIN                        SC       29036       SFD         7.375        7.108       $1,692.15         360
4874772         HAMILTON                      OH       45011       SFD         7.250        6.983       $1,773.66         360
4874964         LITTLETON                     CO       80126       SFD         7.625        7.250       $1,949.98         360
4877370         SAN FRANCISCO                 CA       94115       LCO         7.500        7.233       $2,097.64         360
4877414         BLOOMFIELD HILLS              MI       48304       SFD         7.500        7.233       $2,018.98         360
4921192         SCOTTS VALLEY                 CA       95066       SFD         7.300        7.033       $2,221.25         360
4942637         APTOS                         CA       95003       SFD         7.125        6.858       $2,674.66         360
4944860         MIAMI                         FL       33158       SFD         7.625        7.250       $1,690.90         301
4963376         HAIKU                         HI       96708       SFD         6.750        6.483       $2,659.25         360
5059379         NASHVILLE                     TN       37221       SFD         6.875        6.608       $1,929.40         360
5076946         MIDLOTHIAN                    VA       23113       SFD         7.625        7.250       $2,118.07         360
5078275         ST CLOUD                      FL       34771       SFD         7.500        7.233       $1,777.70         352
5078289         ORLANDO                       FL       32819       SFD         7.125        6.858       $3,505.56         360
5089852         WOODSTOCK                     GA       30189       SFD         6.875        6.608       $2,249.81         360
5089869         PIGEON FORGE                  TN       37863       SFD         7.500        7.233       $1,859.91         360
5089880         BRASELTON                     GA       30517       SFD         7.375        7.108       $2,520.96         360
5089886         ATLANTA                       GA       30319       SFD         7.000        6.733       $3,550.03         360
5089897         LONGBOAT KEY                  FL       34228       SFD         7.250        6.983       $1,841.88         360
5089903         CLERMONT                      FL       34711       SFD         7.000        6.733       $2,441.82         350
5089907         LAKELAND                      FL       33803       SFD         7.625        7.250       $3,074.71         348
5089939         CUMMING                       GA       30040       SFD         7.375        7.108       $2,344.84         360
5089953         ATLANTA                       GA       30327       SFD         6.875        6.608       $4,270.04         360
5089958         NASHVILLE                     TN       37218       SFD         7.375        7.108       $1,937.54         340
5089969         GAINESVILLE                   GA       30506       SFD         7.750        7.250       $2,342.67         360
5090016         HILTON HEAD ISLAND            SC       29926       SFD         7.000        6.733       $2,561.41         360
5090082         NASHVILLE                     TN       37211       SFD         7.250        6.983       $1,762.74         360
5090096         HENDERSONVILLE                NC       28739       SFD         7.250        6.983       $2,164.55         360
5095131         SANFORD                       FL       32771       SFD         7.500        7.233       $2,273.12         348
5095149         GAINESVILLE                   FL       32653       SFD         7.250        6.983       $2,728.71         360
5095175         NASHVILLE                     TN       37215       SFD         7.000        6.733       $2,142.27         360
5095203         DUNWOODY                      GA       30350       SFD         7.000        6.733       $1,995.91         360
5095207         SAVANNAH                      GA       31401       SFD         7.000        6.733       $2,641.11         360
5095217         NASHVILLE                     TN       37215       SFD         7.500        7.233       $2,747.91         360
5095250         SARASOTA                      FL       34236       SFD         7.375        7.108       $3,137.68         348
5095462         SAN CARLOS                    CA       94070       SFD         7.125        6.858       $2,583.71         360
5106371         PURCELLVILLE                  VA       20132       SFD         7.500        7.233       $2,230.50         360
5119460         GLADSTONE                     MO       64118       SFD         7.250        6.983        $480.87          360
5119475         RIDGEWOOD                     NJ       07450       SFD         8.500        7.250       $2,691.20         360
5119483         PORTLAND                      ME       04106       SFD         8.500        7.250        $883.49          360
5119494         INDIAN TRAIL                  NC       28079       SFD         8.250        7.250        $612.67          360
5119500         STATEN ISLAND                 NY       10304       SFD         7.500        7.233        $419.53          360
5119509         PINECREST                     FL       33156       HCO         9.000        7.250        $557.60          360
5119529         SOUTH PLAINFIELD              NJ       07080       SFD         8.875        7.250       $1,113.91         360
5119534         RALEIGH                       NC       27616       SFD         8.625        7.250        $684.45          360
5119542         CLOVIS                        CA       93613       SFD         7.750        7.250       $2,439.38         360
5119550         FRESNO                        CA       93711       SFD         7.750        7.250       $1,432.83         360
5119569         GAITHERSBURG                  MD       20878       SFD         7.375        7.108       $1,177.60         360
5119576         TOBYHANNA                     PA       18466       SFD         7.750        7.250        $565.97          360
5119595         HAMDEN                        CT       06518       SFD         7.750        7.250        $831.75          360
5119605         SUNSET                        SC       29685       SFD         7.250        6.983       $1,364.35         360
5119637         SAN DIEGO                     CA       92106       SFD         7.375        7.108       $3,556.97         360
5119703         WESTON                        FL       33327       SFD         8.250        7.250       $2,479.18         360
5119713         BEEKMAN                       NY       12570       SFD         7.125        6.858        $960.04          360
5119716         NORWALK                       CT       06850       SFD         8.125        7.250       $1,485.00         360

</TABLE>

<TABLE>
NASCOR
NMI / 1999-26  Exhibit F-3
30 YEAR FIXED RATE NON RELOCATION  LOANS

(continued)
<CAPTION>


(i)               (viii)            (ix)           (x)        (xi)          (xii)       (xiii)       (xIv)        (xv)       (xvI)
- -----           ----------     --------------     ------    ---------    ----------    --------   -----------  -------------------
                                  CUT-OFF
MORTGAGE         SCHEDULED          DATE                                  MORTGAGE                  T.O.P.       MASTER      FIXED
LOAN             MATURITY        PRINCIPAL                                INSURANCE    SERVICE     MORTGAGE     SERVICE   RETAINED
NUMBER             DATE           BALANCE          LTV       SUBSIDY        CODE         FEE         LOAN         FEE        YIELD
- --------        -----------    --------------     ------    ---------    ----------    --------   -----------  -------------------
<S>            <C>            <C>              <C>          <C>           <C>        <C>          <C>         <C>            <C>
4851347          1-Jun-28       $ 241,670.12      89.74                      01         0.250                    0.017       0.000
4874772          1-Aug-28       $ 256,634.59      78.79                                 0.250                    0.017       0.000
4874964          1-Aug-28       $ 272,368.84      95.00                      06         0.250                    0.017       0.108
4877370          1-Sep-28       $ 296,750.62      66.67                                 0.250                    0.017       0.000
4877414          1-Aug-28       $ 285,391.11      75.00                                 0.250                    0.017       0.000
4921192          1-Oct-28       $ 320,625.33      72.00                                 0.250                    0.017       0.000
4942637          1-Oct-28       $ 392,722.59      78.61                                 0.250                    0.017       0.000
4944860          1-Sep-22       $ 219,093.28      87.14                      01         0.250                    0.017       0.108
4963376          1-Nov-28       $ 405,630.45      100.00                                0.250                    0.017       0.000
5059379          1-May-29       $ 292,198.17      79.81                                 0.250                    0.017       0.000
5076946          1-Jun-29       $ 297,953.70      95.00                      01         0.250                    0.017       0.108
5078275          1-Aug-28       $ 251,285.43      95.00                      06         0.250                    0.017       0.000
5078289          1-Feb-27       $ 505,210.92      51.68                                 0.250                    0.017       0.000
5089852          1-Jun-29       $ 340,907.00      76.11                                 0.250                    0.017       0.000
5089869          1-Jun-29       $ 265,000.54      95.00                                 0.250                    0.017       0.000
5089880          1-Jun-29       $ 363,594.17      73.00                                 0.250                    0.017       0.000
5089886          1-Jun-29       $ 531,384.46      74.11                                 0.250                    0.017       0.000
5089897          1-Jun-29       $ 268,934.05      47.37                                 0.250                    0.017       0.000
5089903          1-May-28       $ 359,603.20      78.60                                 0.250                    0.017       0.000
5089907          1-Jun-28       $ 428,782.09      84.41                      12         0.250                    0.017       0.108
5089939          1-Jul-29       $ 337,443.53      89.99                      11         0.250                    0.017       0.000
5089953          1-Jun-29       $ 647,238.13      73.45                                 0.250                    0.017       0.000
5089958          1-Nov-27       $ 275,025.90      80.00                                 0.250                    0.017       0.000
5089969          1-Jun-29       $ 325,831.00      74.32                                 0.250                    0.017       0.233
5090016          1-Jul-29       $ 383,726.60      66.96                                 0.250                    0.017       0.000
5090082          1-May-29       $ 257,172.14      80.00                                 0.250                    0.017       0.000
5090096          1-Jul-29       $ 316,300.88      95.00                      01         0.250                    0.017       0.000
5095131          1-Jul-28       $ 321,050.23      90.00                      01         0.250                    0.017       0.000
5095149          1-Jul-29       $ 398,740.47      88.89                      11         0.250                    0.017       0.000
5095175          1-Apr-29       $ 299,007.72      74.02                                 0.250                    0.017       0.000
5095203          1-Jul-29       $ 299,007.72      75.00                                 0.250                    0.017       0.000
5095207          1-Jun-29       $ 395,333.23      79.40                                 0.250                    0.017       0.000
5095217          1-Jul-29       $ 391,822.38      78.60                                 0.250                    0.017       0.000
5095250          1-Jun-28       $ 441,846.24      66.67                                 0.250                    0.017       0.000
5095462          1-Jun-29       $ 381,830.62      71.68                                 0.250                    0.017       0.000
5106371          1-Aug-29       $ 318,285.30      79.95                                 0.250                    0.017       0.000
5119460          1-Dec-28       $ 69,866.47       95.00                      12         0.250                    0.017       0.000
5119475          1-Sep-29       $ 349,574.43      76.25                                 0.250                    0.017       0.983
5119483          1-Sep-29       $ 114,760.28      100.00                                0.250                    0.017       0.983
5119494          1-Sep-29       $ 81,447.64       97.00                                 0.250                    0.017       0.733
5119500          1-May-29       $ 59,728.61       80.00                                 0.250                    0.017       0.000
5119509          1-Sep-29       $ 69,224.02       90.00                                 0.250                    0.017       1.483
5119529          1-Sep-29       $ 139,842.43      65.12                                 0.250                    0.017       1.358
5119534          1-Sep-29       $ 87,895.73       80.00                                 0.250                    0.017       1.108
5119542          1-Sep-29       $ 340,017.81      79.19                                 0.250                    0.017       0.233
5119550          1-Jun-29       $ 199,285.01      78.43                                 0.250                    0.017       0.233
5119569          1-Jul-29       $ 169,976.25      54.30                                 0.250                    0.017       0.000
5119576          1-Jun-29       $ 78,717.57       100.00                                0.250                    0.017       0.233
5119595          1-Jun-29       $ 115,684.99      92.14                                 0.250                    0.017       0.233
5119605          1-Sep-29       $ 199,687.02      40.00                                 0.250                    0.017       0.000
5119637          1-May-29       $ 512,612.38      44.78                                 0.250                    0.017       0.000
5119703          1-Aug-29       $ 328,723.70      79.90                                 0.250                    0.017       0.733
5119713          1-Jun-29       $ 141,923.46      72.29                                 0.250                    0.017       0.000
5119716          1-Sep-29       $ 199,737.45      50.63                                 0.250                    0.017       0.608

                              $ 15,644,108.00



COUNT:                                  54
WAC:                           7.381017714
WAM:                           350.2476031
WALTV:                         76.70257001


</TABLE>

NASCOR
NMI / 1999-26  Exhibit F-3
30 YEAR FIXED RATE NON RELOCATION  LOANS


(i)           (xvii)                                  (xviii)
- -----         -----------                             -----------

MORTGAGE                                            NMI
LOAN                                                LOAN
NUMBER        SERVICER                              SELLER
- --------      ----------------------------------------------------------------
4851347       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
4874772       NATIONAL CITY MORTGAGE C              NATIONAL CITY MORTGAGE C
4874964       NATIONAL CITY MORTGAGE C              NATIONAL CITY MORTGAGE C
4877370       COUNTRYWIDE FUNDING CORP.             COUNTRYWIDE FUNDING CORP.
4877414       COUNTRYWIDE FUNDING CORP.             COUNTRYWIDE FUNDING CORP.
4921192       HOME SAVINGS OF AMERICA               HOME SAVINGS OF AMERICA
4942637       FT MORTGAGE COMPANIES                 FT MORTGAGE COMPANIES
4944860       BANK UNITED OF TEXAS                  BANK UNITED OF TEXAS
4963376       NOVUS FINANCIAL CORPORATION           NOVUS FINANCIAL CORPORATION
5059379       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5076946       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5078275       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5078289       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089852       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089869       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089880       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089886       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089897       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089903       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089907       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089939       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089953       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089958       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5089969       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5090016       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5090082       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5090096       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095131       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095149       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095175       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095203       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095207       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095217       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095250       SUNTRUST MORTGAGE, INC.               SUNTRUST MORTGAGE, INC.
5095462       BANK UNITED                           BANK UNITED
5106371       COLUMBIA NATIONAL, INC.               COLUMBIA NATIONAL, INC.
5119460       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119475       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119483       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119494       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119500       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119509       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119529       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119534       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119542       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119550       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119569       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119576       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119595       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119605       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119637       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119703       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119713       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.
5119716       MERRILL LYNCH CREDIT CORP.            MERRILL LYNCH CREDIT CORP.

COUNT:                                             54
WAC:                                      7.381017714
WAM:                                      350.2476031
WALTV:                                    76.70257001



<PAGE>


                                    EXHIBIT G

                               REQUEST FOR RELEASE
                             (for Trustee/Custodian)


Loan Information
- ----------------

      Name of Mortgagor:                   _____________________________________

      Servicer
      Loan No.:                            _____________________________________

Custodian/Trustee
- -----------------

      Name:                                _____________________________________


      Address:                             _____________________________________
                                           _____________________________________

      Custodian/Trustee
      Mortgage File No.:                   _____________________________________

Seller
- ------

      Name:                                _____________________________________


      Address:                             _____________________________________

      Certificates:                        Mortgage Pass-Through Certificates,
                                           Series 1999-26

            The  undersigned  Master Servicer  hereby  acknowledges  that it has
received from First Union  National Bank, as Trustee for the Holders of Mortgage
Pass-Through Certificates,  Series 1999-26, 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 November 23, 1999 (the "Pooling and Servicing  Agreement")
among the Trustee, the Seller and the Master Servicer.

      ( )   Promissory  Note dated  _________________,  199__,  in the  original
            principal sum of $___________, made by ____________________, payable
            to, or endorsed to the order of, the Trustee.

      ( )   Mortgage  recorded  on  _____________________  as  instrument  no.
            ______________  in the County  Recorder's  Office of the County of
            ____________________,    State   of   _______________________   in
            book/reel/docket   ____________________  of  official  records  at
            page/image ____________.

      ( )   Deed of Trust recorded on  ____________________  as instrument no.
            _________________  in the County  Recorder's  Office of the County
            of    ___________________,    State   of    _________________   in
            book/reel/docket   ____________________  of  official  records  at
            page/image ____________.

      ( )   Assignment  of Mortgage or Deed of Trust to the Trustee,  recorded
            on     ______________________________     as    instrument     no.
            ______________  in the County  Recorder's  Office of the County of
            ______________________,    State   of   _____________________   in
            book/reel/docket   ____________________  of  official  records  at
            page/image ____________.

      ( )   Other  documents,  including  any  amendments,  assignments or other
            assumptions of the Mortgage Note or Mortgage.

            ( )   _____________________________________________

            ( )   _____________________________________________

            ( )   _____________________________________________

            ( )   _____________________________________________

            The undersigned  Master Servicer hereby  acknowledges  and agrees as
follows:

                  (1) The Master  Servicer  shall hold and retain  possession of
      the  Documents  in trust for the  benefit of the  Trustee,  solely for the
      purposes provided in the Agreement.

                  (2)  The  Master  Servicer  shall  not  cause  or  permit  the
      Documents  to become  subject  to, or  encumbered  by, any  claim,  liens,
      security interest,  charges,  writs of attachment or other impositions nor
      shall the Master Servicer assert or seek to assert any claims or rights of
      setoff to or against the Documents or any proceeds thereof.

                  (3) The Master  Servicer  shall  return the  Documents  to the
      Trustee when the need therefor no longer exists,  unless the Mortgage Loan
      relating to the Documents  has been  liquidated  and the proceeds  thereof
      have been  remitted to the  Certificate  Account  and except as  expressly
      provided in the Agreement.

                  (4) The  Documents  and any proceeds  thereof,  including  any
      proceeds of proceeds,  coming into the possession or control of the Master
      Servicer  shall at all times be  earmarked  for the account of the Trustee
      and the Master Servicer shall keep the Documents and any proceeds separate
      and distinct from all other property in the Master Servicer's  possession,
      custody or control.



                                       NORWEST BANK MINNESOTA, NATIONAL
                                          ASSOCIATION



                                       By: __________________________



                                       Title: ________________________

Date: ________________, 19__



<PAGE>



                                    EXHIBIT H


                                                AFFIDAVIT      PURSUANT     TO
                                                SECTION   860E(e)(4)   OF  THE
                                                INTERNAL   REVENUE   CODE   OF
                                                1986,  AS  AMENDED,   AND  FOR
                                                NON-ERISA INVESTORS



STATE OF                )
                        )  ss.:
COUNTY OF               )


            [NAME OF OFFICER], being first duly sworn, deposes and says:

            1.   That  he  is [Title of  Officer]  of [Name of  Purchaser]  (the
"Purchaser"),  a  [description  of type of entity] duly  organized  and existing
under the laws of the [State of ] [United  States],  on behalf of which he makes
this affidavit.

            2.   That the Purchaser's Taxpayer Identification Number is [ ].

            3.   That the  Purchaser is not a "disqualified organization" within
the meaning of Section  860E(e)(5),of  the  Internal  Revenue  Code of 1986,  as
amended  (the  "Code"),  or an  ERISA  Prohibited  Holder,  and  will  not  be a
"disqualified  organization"  or an  ERISA  Prohibited  Holder,  as of  [date of
transfer],  and that the  Purchaser is not acquiring  Norwest  Asset  Securities
Corporation  Mortgage  Pass-Through  Certificates,  Series  1999-26,  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 Trustee with an effective
Internal  Revenue  Service  Form 4224 or  successor  form at the time and in the
manner required by the Code or (iii) is a Non-U.S.  Person that has delivered to
both the  transferor  and the Trustee an opinion of a nationally  recognized tax
counsel to the effect that the transfer of the Class A-R 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 U.S.  federal  income tax  regardless  of its source,  or a
trust  if a  court  within  the  United  States  is  able  to  exercise  primary
supervision  over the  administration  of such trust,  and one or more such U.S.
Persons have the  authority to control all  substantial  decisions of such trust
(or, to the extent provided in applicable Treasury  regulations,  certain trusts
in  existence  on August 20,  1996 which are  eligible to elect to be treated as
U.S. Persons).

            8.   That  the  Purchaser  agrees to such  amendments of the Pooling
and  Servicing   Agreement  as  may  be  required  to  further   effectuate  the
restrictions  on transfer of the Class A-R  Certificate to such a  "disqualified
organization,"  an agent thereof,  an ERISA  Prohibited  Holder or a person that
does not satisfy the  requirements  of paragraph 4,  paragraph 5 and paragraph 7
hereof.

            9.   That  the Purchaser  consents to the  designation of the Master
Servicer as its agent to act as "tax  matters  person" of the 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 1999-26, 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 1999-26
                   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 1999-26, 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  November  23,  1999 (the  "Pooling  and
Servicing Agreement") among Norwest Asset Securities Corporation, as seller (the
"Seller"), Norwest Bank Minnesota, National Association, as master servicer (the
"Master Servicer") and First Union National Bank, as trustee (the "Trustee"), of
Norwest Asset Securities Corporation Mortgage Pass-Through Certificates,  Series
1999-26.

            Section 2.  Representations  and  Warranties  of the  Purchaser.  In
connection with the proposed transfer,  the Purchaser represents and warrants to
the Seller,  the Master Servicer and the Trustee that:

            (a) The Purchaser is duly  organized,  validly  existing and in good
standing under the laws of the jurisdiction in which the Purchaser is organized,
is authorized to invest in the Class [A-PO][B-4][B-5][B-6]  Certificates, and to
enter into this Agreement, and duly executed and delivered this Agreement.

            (b) The  Purchaser  is  acquiring  the  Class  [A-PO][B-4][B-5][B-6]
Certificates  for its  own  account  as  principal  and  not  with a view to the
distribution  thereof,  in whole or in part.

            [(c) The Purchaser  has knowledge of financial and business  matters
and is capable of evaluating  the merits and risks of an investment in the Class
[A-PO][B-4][B-5][B-6]  Certificates;  the Purchaser has sought such  accounting,
legal  and tax  advice  as it has  considered  necessary  to  make  an  informed
investment  decision;  and the Purchaser is able to bear the economic risk of an
investment  in the Class  [A-PO][B-4][B-5][B-6]  Certificates  and can  afford a
complete loss of such investment.]

            [(c)  The Purchaser is a "Qualified  Institutional Buyer" within the
meaning  of Rule 144A of the Act.]

            (d) The  Purchaser  confirms that (a) it has received and reviewed a
copy of the Private Placement  Memorandum dated __________ __, 19__, relating to
the Class  [A-PO][B-4][B-5][B-6]  Certificates  and  reviewed,  to the extent it
deemed appropriate,  the documents attached thereto or incorporated by reference
therein, (b) it has had the opportunity to ask questions of, and receive answers
from the Seller concerning the Class [A-PO][B-4][B-5][B-6]  Certificates and all
matters  relating  thereto,  and obtain any  additional  information  (including
documents) relevant to its decision to purchase the Class  [A-PO][B-4][B-5][B-6]
Certificates  that the Seller  possesses  or can  possess  without  unreasonable
effort or expense and (c) it has undertaken its own independent  analysis of the
investment in the Class [A-PO][B-4][B-5][B-6]  Certificates.  The Purchaser will
not use or disclose any  information it receives in connection with its purchase
of the Class [A-PO][B-4][B-5][B-6]  Certificates other than in connection with a
subsequent sale of Class [A-PO][B-4][B-5][B-6]  Certificates.

            (e) Either (i) the  Purchaser  is not an  employee  benefit  plan or
other  retirement  arrangement  subject  to Title I of the  Employee  Retirement
Income  Security  Act of 1974,  as amended,  ("ERISA"),  or Section  4975 of the
Internal Revenue Code of 1986, as amended (the "Code"),  or a governmental plan,
as defined in Section 3(32) of ERISA subject to any federal,  state or local law
("Similar  Law")  which is,  to a  material  extent,  similar  to the  foregoing
provisions  of ERISA or the Code  (collectively,  a "Plan"),  an agent acting on
behalf of a Plan, or a person  utilizing the assets of a Plan or (ii) [for Class
[B-4][B-5][B-6] Certificates only] if the Purchaser is an insurance company, (A)
the source of funds used to purchase the Class [B-4][B-5][B-6] Certificate is an
"insurance  company general account" (as such term is defined in Section V(e) of
Prohibited  Transaction Class Exemption 95-60 ("PTE 95-60"),  60 Fed. Reg. 35925
(July 12,  1995),  (B) there is no Plan with respect to which the amount of such
general  account's  reserves and liabilities  for the contract(s)  held by or on
behalf of such Plan and all other  Plans  maintained  by the same  employer  (or
affiliate  thereof as  defined  in Section  V(a)(1) of PTE 95-60) or by the same
employee  organization  exceeds 10% of the total of all reserves and liabilities
of such general  account (as such amounts are  determined  under Section I(a) of
PTE 95-60) at the date of  acquisition  and (C) the purchase and holding of such
Class  [B-4][B-5][B-6]  Certificates  are  covered by  Sections I and III of PTE
95-60  or  (iii)  the  Purchaser  has  provided  (a) a  "Benefit  Plan  Opinion"
satisfactory  to the  Seller and the  Trustee  of the Trust  Estate and (b) such
other opinions of counsel,  officers'  certificates and agreements as the Seller
or the Master  Servicer may have required.  A Benefit Plan Opinion is an opinion
of counsel to the effect that the proposed transfer will not cause the assets of
the Trust Estate to be regarded as "plan  assets" and subject to the  prohibited
transaction  provisions  of ERISA,  the Code or Similar Law and will not subject
the Trustee,  the Seller or the Master Servicer to any obligation in addition to
those undertaken in the Pooling and Servicing Agreement (including any liability
for civil penalties or excise taxes imposed  pursuant to ERISA,  Section 4975 of
the Code or Similar  Law).

            (f) If the  Purchaser  is a  depository  institution  subject to the
jurisdiction of the Office of the Comptroller of the Currency ("OCC"), the Board
of  Governors  of the  Federal  Reserve  System  ("FRB"),  the  Federal  Deposit
Insurance Corporation ("FDIC"),  the Office of Thrift Supervision ("OTS") or the
National Credit Union  Administration  ("NCUA"),  the Purchaser has reviewed the
"Supervisory  Policy Statement on Securities  Activities" dated 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 Trustee is under any obligation to register the Class  [A-PO][B-4][B-5][B-6]
Certificates or make an exemption  available.  In the event that such a transfer
is to be made in reliance  upon an exemption  from the Act or  applicable  state
securities  laws, (i) the Trustee shall require,  in order to assure  compliance
with such laws, that the  Certificateholder's  prospective transferee certify to
the  Seller and the  Trustee as to the  factual  basis for the  registration  or
qualification  exemption  relied  upon,  and (ii)  unless  the  transferee  is a
"Qualified  Institutional Buyer" within the meaning of Rule 144A of the Act, the
Trustee or the Seller may, if such  transfer is made within three years from the
later of (a) the  Closing  Date or (b) the last date on which the  Seller or any
affiliate  thereof was a holder of the Certificates  proposed to be transferred,
require an Opinion of Counsel  that such  transfer  may be made  pursuant  to an
exemption from the Act and state securities laws, which Opinion of Counsel shall
not be an expense of the Trustee,  the Master  Servicer or the Seller.  Any such
Certificateholder  desiring to effect such transfer shall, and does hereby agree
to,  indemnify  the  Trustee,  the Master  Servicer,  any Paying Agent acting on
behalf of the Trustee and the Seller  against any  liability  that may result if
the transfer is not so exempt or is not made in accordance with such federal and
state laws.

            (b) No transfer of a Class  [A-PO][B-4][B-5][B-6]  Certificate shall
be made  unless  the  transferee  provides  the Seller  and the  Trustee  with a
Transferee's  Letter,  substantially  in the  form  of this  Agreement.

            (c) The Purchaser acknowledges that its Class  [A-PO][B-4][B-5][B-6]
Certificates  bear  a  legend  setting  forth  the  applicable  restrictions  on
transfer.



<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>



K - 2


                                    EXHIBIT K

                      NORWEST ASSET SECURITIES CORPORATION

                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1999-26
                      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 1999-26, 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  November  23,  1999 (the  "Pooling  and
Servicing Agreement") among Norwest Asset Securities Corporation, as seller (the
"Seller"), Norwest Bank Minnesota, National Association, as master servicer (the
"Master  Servicer") and First Union National Bank, as trustee (the "Trustee") of
Norwest Asset Securities Corporation Mortgage Pass-Through Certificates,  Series
1999-26.

            Section 2.  Representations  and  Warranties  of the  Purchaser.  In
connection with the proposed transfer,  the Purchaser represents and warrants to
the Seller, the Master Servicer and the Trustee that:

            Either (i) the  Purchaser  is not an employee  benefit plan or other
      retirement  arrangement  subject  to  Title I of the  Employee  Retirement
      Income Security Act of 1974, as amended, ("ERISA"), or Section 4975 of the
      Internal Revenue Code of 1986, as amended (the "Code"),  or a governmental
      plan, as defined in Section  3(32) of ERISA subject to any federal,  state
      or local law ("Similar  Law") which is, to a material  extent,  similar to
      the foregoing provisions of ERISA or the Code (collectively, a "Plan"), an
      agent acting on behalf of a Plan,  or a person  utilizing  the assets of a
      Plan or (ii) if the Purchaser is an insurance  company,  (A) the source of
      funds used to  purchase  the Class [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] Certificate are covered by Sections I and III of PTE 95-60
      or  (iii)  the  Purchaser  has  provided  (a)  a  "Benefit  Plan  Opinion"
      satisfactory  to the  Seller and the  Trustee of the Trust  Estate and (b)
      such other opinions of counsel,  officers'  certificates and agreements as
      the  Seller or the  Master  Servicer  may have  required.  A Benefit  Plan
      Opinion is an opinion of counsel to the effect that the proposed  transfer
      will not cause the  assets of the  Trust  Estate to be  regarded  as "plan
      assets" and subject to the prohibited transaction provisions of ERISA, the
      Code or Similar Law and will not subject  the  Trustee,  the Seller or the
      Master  Servicer to any obligation in addition to those  undertaken in the
      Pooling  and  Servicing  Agreement  (including  any  liability  for  civil
      penalties or excise taxes imposed  pursuant to ERISA,  Section 4975 of the
      Code or Similar Law).

            IN WITNESS WHEREOF,  the undersigned has caused this Agreement to be
validly  executed by its duly  authorized  representative  as of the day and the
year first above written.


                                       [PURCHASER]


                                       By: _____________________________


                                       Its: _____________________________


                                       [Reserved]


<PAGE>




                                    EXHIBIT L

                              SERVICING AGREEMENTS

                  Norwest Mortgage, Inc. Servicing Agreement

                 SunTrust Mortgage, Inc. Servicing Agreement

                       NOVUS Financial Servicing Agreement

             Merrill Lynch Credit Corporation Servicing Agreement

                   Columbia National, Inc. Servicing Agreement

                         Bank United Servicing Agreement

                  FT Mortgage Companies Servicing Agreement

              National City Mortgage Company Servicing Agreement

               Home Savings of America, FSB Servicing Agreement

               Countrywide Home Loans, Inc. 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
1999-26, Class ____ (the "Class B Certificates").  The Class B Certificates were
issued  pursuant to a Pooling and Servicing  Agreement  dated as of November 23,
1999 among  Norwest  Asset  Securities  Corporation,  as seller (the  "Seller"),
Norwest Bank Minnesota, National Association, as Master Servicer and First Union
National Bank, as Trustee.

            ______________________   intends  to  resell  all  of  the  Class  B
Certificates directly to the Purchaser on or promptly after the date hereof.

            In connection  with such sale,  the parties  hereto have agreed that
the  Company  will cause,  to the extent that the Company as Master  Servicer is
granted  such  authority  in  the  related  Servicing  Agreements,  the  related
servicers  (each a related  "Servicer"),  which service the Mortgage Loans which
comprise  the Trust  Estate  related to the above  referenced  series  under the
related servicing agreements (each a related "Servicing  Agreement"),  to engage
in certain special servicing procedures relating to foreclosures for the benefit
of the Purchaser, and that the Purchaser will deposit funds in a collateral fund
to cover any losses  attributable to such procedures as well as all advances and
costs in connection therewith, as set forth herein.

            In  consideration of the mutual  agreements  herein  contained,  the
receipt and  sufficiency of which are hereby  acknowledged,  the Company and the
Purchaser agree that the following  provisions  shall become effective and shall
be binding on and enforceable by the Company and the Purchaser:


                                    ARTICLE I

                                   DEFINITIONS

            Section 1.1.  Defined Terms.

            Whenever used in this  Agreement,  the following  words and phrases,
unless the context otherwise requires, shall have the following meanings:

            Business  Day: Any day other than (i) a Saturday or a Sunday or (ii)
a day on which  banking  institutions  in the State of New York are  required or
authorized by law or executive order to be closed.

            Collateral  Fund: The fund  established  and maintained  pursuant to
Section 3.01 hereof.

            Collateral Fund Permitted Investments: Either (i) obligations of, or
obligations fully guaranteed as to principal and interest by, the United States,
or any agency or instrumentality  thereof,  provided such obligations are backed
by the full faith and  credit of the United  States,  (ii) a money  market  fund
rated in the highest rating  category by a nationally  recognized  rating agency
selected by the Company,  (iii) cash,  (iv) mortgage  pass-through  certificates
issued or guaranteed by Government National Mortgage Association, FNMA or FHLMC,
(v) commercial paper (including both  non-interest-bearing  discount obligations
and interest-bearing  obligations payable on demand or on a specified date), the
issuer of which may be an affiliate  of the Company,  having at the time of such
investment  a  rating  of at  least  P-1  by  Moody's  Investors  Service,  Inc.
("Moody's")  or at least D-1 by Duff & Phelps Credit Rating Co.  ("DCR") or (vi)
demand  and time  deposits  in,  certificates  of  deposit  of,  any  depository
institution  or  trust  company  (which  may be an  affiliate  of  the  Company)
incorporated under the laws of the United States of America or any state thereof
and subject to  supervision  and  examination  by federal  and/or state  banking
authorities,  so long as at the time of such investment either (x) the long-term
debt  obligations of such depository  institution or trust company have a rating
of at least AA by DCR or Aa2 by Moody's, (y) the certificate of deposit or other
unsecured  short-term debt  obligations of such depository  institution or trust
company  have a  rating  of at  least  D-1 by DCR or P-1 by  Moody's  or (z) the
depository  institution or trust company is one that is acceptable to either DCR
or Moody's and, for each of the preceding  clauses (i),  (iv), (v) and (vi), the
maturity  thereof  shall be not later  than the  earlier to occur of (A) 30 days
from the date of the related investment and (B) the next succeeding Distribution
Date as defined in the related Pooling and Servicing Agreement.

            Commencement  of  Foreclosure:  The first official  action  required
under local law in order to commence  foreclosure  proceedings  or to schedule a
trustee's  sale under a deed of trust,  including (i) in the case of a mortgage,
any filing or service of process  necessary to commence an action to  foreclose,
or (ii) in the case of a deed of  trust,  posting,  the  publishing,  filing  or
delivery of a notice of sale, but not including in either case (x) any notice of
default,  notice of intent to foreclose or sell or any other action prerequisite
to  the  actions  specified  in (i) or  (ii)  above,  (y)  the  acceptance  of a
deed-in-lieu  of foreclosure  (whether in connection  with a sale of the related
property or otherwise) or (z) initiation and completion of a short pay-off.

            Current Appraisal: With respect to any Mortgage Loan as to which the
Purchaser has made an Election to Delay Foreclosure, an appraisal of the related
Mortgaged  Property  obtained  by the  Purchaser  at its  own  expense  from  an
independent  appraiser  (which  shall  not be an  affiliate  of  the  Purchaser)
acceptable to the Company as nearly contemporaneously as practicable to the time
of  the  Purchaser's  election,   prepared  based  on  the  Company's  customary
requirements for such appraisals.

            Election to Delay  Foreclosure:  Any  election by the  Purchaser  to
delay the Commencement of Foreclosure, made in accordance with Section 2.02(b).

            Election to Foreclose: Any election by the Purchaser to proceed with
the Commencement of Foreclosure, made in accordance with Section 2.03(a).

            Monthly  Advances:  Principal  and interest  advances and  servicing
advances including costs and expenses of foreclosure.

            Required  Collateral Fund Balance:  As of any date of determination,
an amount  equal to the  aggregate  of all  amounts  previously  required  to be
deposited in the Collateral Fund pursuant to Section  2.02(d) (after  adjustment
for all  withdrawals  and  deposits  pursuant  to Section  2.02(e))  and Section
2.03(b) (after  adjustment for all withdrawals and deposits  pursuant to Section
2.03(c)) and Section 3.02 to be reduced by all withdrawals therefrom pursuant to
Section 2.02(g) and Section 2.03(d).

            Section 1.2. 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 2.1. 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 2.2. 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   2.3.   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 2.4. 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 3.1. 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 1999-26. 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 3.2. 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 3.3. 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 3.4. 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 4.1. 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 4.2. 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 4.3. 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 4.4. Notices.

            All demands,  notices and direction hereunder shall be in writing or
by telecopy and shall be deemed effective upon receipt to:

            (a)   in the case of the Company,
                  Norwest Bank Minnesota, National Association
                  7485 New Horizon Way
                  Frederick, MD 21703

                  Attention:  Vice President, Master Servicing
                  Phone:      301-696-7800
                  Fax:        301-815-6365

            (b)   in the case of the Purchaser,

                  _____________________________________

                  _____________________________________

                  _____________________________________

                  _____________________________________

                  Attention:___________________________

            Section 4.5. 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 4.6. 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 4.7. 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 4.8. 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 4.9. 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:

<PAGE>




                                    EXHIBIT N

                                     POLICY






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