NORWEST ASSET SEC CORP MORT PASS THR CERT SER 1997-15 TRUST
8-K, 1997-11-10
Previous: NORWEST ASSET SEC CORP MORT PASS THR CERT SER 1997-14 TRUST, 8-K, 1997-11-10
Next: NORWEST ASSET SEC CORP MORT PASS THR CERT SER 1997-15 TRUST, 8-K, 1997-11-10



                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



Date of Report:  September 29, 1997
(Date of earliest event reported)

Commission File No. 333-21263




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



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




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




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





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


<PAGE>


ITEM 5.  Other Events

     On September 29, 1997,  Norwest Asset  Securities  Corporation,  a Delaware
corporation (the "Registrant"),  sold Mortgage Pass-Through Certificates, Series
1997-15,  Class A-1, Class A-2,  Class A-3,  Class A-4,  Class A-PO,  Class A-R,
Class M,  Class  B-1 and  Class  B-2 (the  "Offered  Certificates"),  having  an
aggregate   original   principal   balance  of   $168,986,999.29.   The  Offered
Certificates were issued pursuant to a Pooling and Servicing Agreement, dated as
of September 29, 1997,  among the Registrant,  Norwest Bank Minnesota,  National
Association,  as master  servicer  (the "Master  Servicer"  or "Norwest  Bank"),
United States Trust Company of New York,  as trustee,  and First Union  National
Bank, as trust  administrator (the "Agreement"),  a copy of which is filed as an
exhibit hereto. Mortgage Pass-Through Certificates,  Series 1997-15, Class A-WIO
Certificates  having no principal balance and Class B-3, Class B-4 and Class B-5
Certificates,  having an aggregate  initial  principal  balance of $1,191,363.95
(the  "Private  Class  B  Certificates"  and,  together  with  the  Class  A-WIO
Certificates and the Offered Certificates, the "Certificates"), were also issued
pursuant to the Agreement.

     As of the date of initial issuance,  the Offered Certificates  evidenced an
approximate  99.30%  undivided  interest in a trust fund (the  "Trust  Estate"),
consisting principally of a pool of fixed interest rate,  conventional,  monthly
pay, fully-amortizing, one-to four-family residential first mortgage loans which
may include loans secured by shares issued by cooperative housing  corporations.
The  remaining  undivided  interests  in the Trust  Estate are  evidenced by the
Private  Class B  Certificates,  distributions  on  which  are  subordinated  to
distributions on the Offered Certificates, and the Class A-WIO Certificates.

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

     An  election  will be made to treat  the Trust  Estate a REMIC for  federal
income tax purposes (the  "REMIC").  The Class A-1,  Class A-2, Class A-3, Class
A-4,  Class A-WIO,  Class A-PO,  Class M, Class B-1, Class B-2, Class B-3, Class
B-4 and Class B-5  Certificates  will be treated as "regular  interests"  in the
REMIC and the Class A-R Certificate  will be treated as the "residual  interest"
in the REMIC.


<PAGE>


ITEM 7.  Financial Statements and Exhibits

         (c) Exhibits

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

   (EX-4)                                            Pooling    and    Servicing
                                                     Agreement,   dated   as  of
                                                     September  29, 1997,  among
                                                     Norwest  Asset   Securities
                                                     Corporation,  Norwest  Bank
                                                     Minnesota,         National
                                                     Association,  United States
                                                     Trust  Company of New York,
                                                     as trustee, and First Union
                                                     National   Bank,  as  trust
                                                     administrator.


<PAGE>


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

                                 NORWEST ASSET SECURITIES CORPORATION

September 29, 1997


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


<PAGE>


                                INDEX TO EXHIBITS


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


 (EX-4)       Pooling and Servicing                                     E
              Agreement, dated as of September 29, 1997 among
              Norwest Asset Securities Corporation, Norwest Bank
              Minnesota, National Association, United States
              Trust Company of New York, as trustee, and First
              Union National Bank, as trust administrator.




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


                      NORWEST ASSET SECURITIES CORPORATION

                                    (Seller)

                                       and

                  NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION

                                (Master Servicer)

                                       and

                     UNITED STATES TRUST COMPANY OF NEW YORK

                                    (Trustee)

                                       and

                            FIRST UNION NATIONAL BANK

                              (Trust Administrator)



                         POOLING AND SERVICING AGREEMENT

                         Dated as of September 29, 1997

                                 $170,178,363.24




                       Mortgage Pass-Through Certificates
                                 Series 1997-15


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


<PAGE>


                                TABLE OF CONTENTS

                                                                           Page

                                    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 Trust Administrator................................
Section 2.03. Representations and Warranties of the Master Servicer
                 and the Seller................................................
Section 2.04. Execution and Delivery of Certificates...........................
Section 2.05. Designation of Certificates; Designation of Startup Day
                 and Latest Possible Maturity Date.............................

                                   ARTICLE III

                       ADMINISTRATION OF THE TRUST ESTATE:
                         SERVICING OF THE MORTGAGE LOANS
Section 3.01. Certificate Account..............................................
Section 3.02. Permitted Withdrawals from the Certificate Account...............
Section 3.03. Advances by Master Servicer and Trust Administrator..............
Section 3.04. Trust Administrator to Cooperate;  Release of Owner
                 Mortgage Loan Files...........................................
Section 3.05. Reports to the Trustee and Trust Administrator;
                 Annual Compliance Statements..................................
Section 3.06. Title, Management and Disposition of Any REO Mortgage Loan.......
Section 3.07. Amendments to Servicing Agreements,  Modification of
                 Standard Provisions...........................................
Section 3.08. Oversight of Servicing...........................................
Section 3.09. Termination and Substitution of Servicing Agreements.............
Section 3.10. 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; Report to the Trust
                 Administrator and the Seller..................................
Section 4.05. Reports to Mortgagors and the Internal Revenue Service...........
Section 4.06. Calculation of Amounts; Binding Effect of Interpretations
                 and Actions of Master Servicer................................

                                    ARTICLE V

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

                                   ARTICLE VI

                       THE SELLER AND THE MASTER SERVICER
Section 6.01. Liability of the Seller and the Master Servicer..................
Section 6.02. Merger or Consolidation of the Seller or the Master Servicer.....
Section 6.03. Limitation on Liability of the Seller, the Master
                 Servicer and Others...........................................
Section 6.04. Resignation of the Master Servicer...............................
Section 6.05. Compensation to the Master Servicer..............................
Section 6.06. Assignment or Delegation of Duties by Master Servicer............
Section 6.07. Indemnification of Trustee, Trust Administrator and
                 Seller by Master Servicer.....................................

                                   ARTICLE VII

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

                                  ARTICLE VIII

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

                                   ARTICLE IX

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

                                    ARTICLE X

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

                                   ARTICLE XI

                             TERMS FOR CERTIFICATES
Section 11.01. Class A Fixed Pass-Through Rate.................................
Section 11.02. Cut-Off Date....................................................
Section 11.03. Cut-Off Date Aggregate Principal Balance........................
Section 11.04. Original Class A Percentage.....................................
Section 11.05. Original Class A Subclass Principal Balances....................
Section 11.06. Original Class A Non-PO Principal Balance.......................
Section 11.07. Original Subordinated Percentage................................
Section 11.08. Original Class M Percentage.....................................
Section 11.09. Original Class M Principal Balance..............................
Section 11.10. Original Class M Fractional Interest............................
Section 11.11. Original Class B-1 Percentage...................................
Section 11.12. Original Class B-2 Percentage...................................
Section 11.13. Original Class B-3 Percentage...................................
Section 11.14. Original Class B-4 Percentage...................................
Section 11.15. Original Class B-5 Percentage...................................
Section 11.16. Original Class B Principal Balance..............................
Section 11.17. Original Class B Subclass Principal Balances....................
Section 11.18. Original Class B-1 Fractional Interest..........................
Section 11.19. Original Class B-2 Fractional Interest..........................
Section 11.20. Original Class B-3 Fractional Interest..........................
Section 11.21. Original Class B-4 Fractional Interest..........................
Section 11.22. Closing Date....................................................
Section 11.23. Right to Purchase...............................................
Section 11.24. Wire Transfer Eligibility.......................................
Section 11.25. Single Certificate..............................................
Section 11.26. Servicing Fee Rate..............................................
Section 11.27. Master Servicing Fee Rate.......................................


<PAGE>


                                    EXHIBITS

EXHIBIT A-1   -  Form of Face of Class A-1 Certificate
EXHIBIT A-2   -  Form of Face of Class A-2 Certificate
EXHIBIT A-3   -  Form of Face of Class A-3 Certificate
EXHIBIT A-4   -  Form of Face of Class A-4 Certificate
EXHIBIT A-WIO -  Form of Face of Class A-WIO 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 C     -  Form of Face of Class M Certificate
EXHIBIT D     -  Form of Reverse of Series 1997-15 Certificates
EXHIBIT E     -  Custodial Agreement
EXHIBIT F-1   -  Schedule of Mortgage Loans Serviced by Norwest Mortgage
                    from locations other than Frederick, Maryland 
EXHIBIT F-2   -  Schedule of Mortgage Loans Serviced by Norwest Mortgage
                    in 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 Class A-R Certificate
EXHIBIT J     -  Transferee's Letter (Class [A-WIO][B-3][B-4][B-5] Certificates)
EXHIBIT K     -  Transferee's Letter (Class [M] [B-1] [B-2] Certificates)
EXHIBIT L     -  Servicing Agreements
EXHIBIT M     -  Form of Special Servicing Agreement


<PAGE>


     This  Pooling  and  Servicing  Agreement,  dated as of  September  29, 1997
executed  by NORWEST  ASSET  SECURITIES  CORPORATION,  as Seller,  NORWEST  BANK
MINNESOTA, NATIONAL ASSOCIATION, as Master Servicer, UNITED STATES TRUST COMPANY
OF NEW YORK, as Trustee and FIRST UNION NATIONAL BANK, as Trust Administrator.


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

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

ARTICLE I

DEFINITIONS

Section 1.01. Definitions.

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

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

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

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

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

     Adjustment  Amount:  For any Distribution  Date, the difference between (A)
the sum of the Class A Principal Balance,  Class M 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,  Class M 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 M Optimal Principal Amount,  Class B-1 Optimal Principal Amount, Class B-2
Optimal Principal Amount,  Class B-3 Optimal Principal Amount, Class B-4 Optimal
Principal Amount and Class B-5 Optimal Principal Amount.

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

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

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

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

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

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

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

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

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

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

     Bankruptcy  Loss  Amount:  As of any  Distribution  Date prior to the first
anniversary of the Cut-Off Date, the Bankruptcy  Loss Amount will equal $100,000
minus the aggregate amount of Bankruptcy  Losses allocated solely to the Class B
Certificates  or,  following the  reduction of the Class B Principal  Balance to
zero,  solely to the Class M  Certificates  in accordance  with Section  4.02(a)
since  the  Cut-Off  Date.  As of any  Distribution  Date on or after  the first
anniversary  of the Cut-Off  Date,  an amount equal to (1) the lesser of (a) the
Bankruptcy  Loss Amount  calculated  as of the close of business on the Business
Day  immediately  preceding  the most recent  anniversary  of the  Cut-Off  Date
coinciding with or preceding such Distribution Date (the "Relevant Anniversary")
and (b) such lesser amount which, as determined on the Relevant Anniversary will
not cause any rated  Certificates  to be placed on credit  review  status (other
than for possible  upgrading)  by either  Rating  Agency minus (2) the aggregate
amount of Bankruptcy  Losses  allocated  solely to the Class B Certificates  or,
following the reduction of the Class B Principal  Balance to zero, solely to the
Class M  Certificates  in  accordance  with Section  4.02(a)  since the Relevant
Anniversary.  On and after the Cross-Over  Date the Bankruptcy Loss Amount shall
be zero.

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

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

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

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

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

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

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

     Class: All  certificates  whose form is identical except for (i) variations
in the Percentage Interest evidenced thereby and (ii) in the case of the Class A
Certificates  and Class B Certificates,  variations in Subclass  designation and
other Subclass characteristics.

     Class  A  Certificate:  Any  one  of  Class  A-1  Certificates,  Class  A-2
Certificates,  Class  A-3  Certificates,  Class  A-4  Certificates,  Class  A-PO
Certificates, Class A-WIO 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, the aggregate
amount  distributable  to the  Subclasses  of Class A  Certificates  pursuant to
Paragraphs  first,   second,  third  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 Class A Subclass  Interest Accrual Amounts with respect to such Distribution
Date.

     Class A Loss Denominator:  As to any Determination Date, an amount equal to
the Class A Non-PO Principal Balance.

     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 sum
of the Class A Subclass Unpaid Interest Shortfalls for each Class A Subclass and
(iii) the Class A Non-PO Optimal Principal Amount.

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

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

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

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

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

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

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

     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 September  2002,  100%. As to any  Distribution  Date
subsequent to September 2002 to and including the Distribution Date in September
2003,  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 September  2003 to and including  the  Distribution  Date in
September 2004, 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 September  2004 to and including  the  Distribution  Date in
September 2005, 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 September  2005 to and including  the  Distribution  Date in
September 2006, 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  September  2006,  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 September  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 M Principal  Balance and the
current Class B Principal  Balance and (b) cumulative  Realized Losses shall not
exceed  (1)  30%  of  the  Original  Subordinated   Principal  Balance  if  such
Distribution  Date occurs between and including October 2002 and September 2003,
(2) 35% of the Original Subordinated Principal Balance if such Distribution Date
occurs  between and including  October 2003 and September  2004,  (3) 40% of the
Original Subordinated Principal Balance if such Distribution Date occurs between
and  including  October  2004  and  September  2005,  (4)  45% of  the  Original
Subordinated  Principal  Balance if such  Distribution  Date occurs  between and
including  October  2005  and  September  2006,  and  (5)  50% of  the  Original
Subordinated  Principal Balance if such Distribution Date occurs during or after
October  2006.  With  respect  to any  Distribution  Date on which  the  Class A
Prepayment Percentage is reduced below the Class A Prepayment Percentage for the
prior  Distribution  Date,  the  Master  Servicer  shall  certify  to the  Trust
Administrator,  based  upon  information  provided  by each  Servicer  as to the
Mortgage  Loans  serviced  by it that the  criteria  set forth in the  preceding
sentence are met.

     Class A Principal  Balance:  As of any date,  an amount equal to the sum of
the Class A Subclass  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 Subclass: Any of the Subclasses of Class A Certificates  consisting
of the Class A-1 Certificates,  Class A-2 Certificates,  Class A-3 Certificates,
Class A-4 Certificates,  Class A-PO  Certificates,  Class A-WIO Certificates and
Class A-R Certificate.

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

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

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

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

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

     Class A Subclass Pass-Through Rate: As to each Class A Subclass, other than
the Class  A-PO and Class  A-WIO  Certificates,  the Class A Fixed  Pass-Through
Rate. The Class A-PO Certificates are not entitled to interest and have no Class
A Subclass  Pass-Through  Rate.  As to the Class A-WIO  Certificates,  the Class
A-WIO Pass-Through Rate.

     Class A Subclass Principal Balance:  As of the first Determination Date and
as to any Class A  Subclass  (other  than the  Class  A-WIO  Certificates),  the
Original Class A Subclass Principal Balance of such Class A Subclass.  As of any
subsequent Determination Date prior to the Cross-Over Date and as to any Class A
Subclass (other than the Class A-WIO and Class A-PO Certificates),  the Original
Class A Subclass  Principal Balance of such Class A Subclass less the sum of (i)
all amounts previously  distributed in respect of such Class A Subclass on prior
Distribution Dates (A) pursuant to Paragraph third clause (A) of Section 4.01(a)
and (B) as a result  of a  Principal  Adjustment  and (ii) the  Realized  Losses
allocated through such  Determination  Date to such Class A Subclass pursuant to
Section 4.02(b). After the Cross-Over Date, each such Class A Subclass Principal
Balance  will also be reduced on each  Determination  Date by an amount equal to
the product of the Class A Subclass Loss Percentage of such Class A Subclass 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. The
Class A-WIO Certificates have no Class A Subclass Principal Balance.

     As of any subsequent Determination Date prior to the Cross-Over Date and as
to the Class A-PO Certificates,  the Original Class A Subclass Principal Balance
of such Class A Subclass 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 Class
A Subclass  Principal Balance will also be reduced on each Determination Date by
an  amount  equal to the  difference,  if any,  between  such  Class A  Subclass
Principal Balance as of such  Determination Date without regard to this sentence
and the Adjusted Pool Amount (PO Portion) for the preceding Distribution Date.

     Class A Subclass Unpaid Interest Shortfall: As to any Distribution Date and
Class A Subclass,  the amount,  if any,  by which the  aggregate  of the Class A
Subclass  Interest  Shortfall  Amounts  for  such  Class A  Subclass  for  prior
Distribution  Dates is in excess of the amounts  distributed  in respect of such
Class A Subclass on prior  Distribution  Dates  pursuant to Paragraph  second of
Section 4.01(a).

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

     Class  A  Voting  Interest:  The  sum of (A) the  product  of (i) the  then
applicable  Class A Percentage  and (ii) the Non-PO Voting  Interest and (B) the
Pool Balance (PO Portion)  divided by the Pool Balance (Non-PO  Portion) and the
Pool Balance (PO Portion).

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

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

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

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

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

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

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

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

     Class A-4 Percentage:  The Class A Subclass  Principal Balance of the Class
A-4 Certificates  divided by the sum of the Class A Subclass  Principal Balances
of the Class A-2, Class A-3, Class A-4 and Class A-R Certificates.

     Class A-4 Prepayment Shift  Percentage:  As to any  Distribution  Date, the
percentage indicated below:

Distribution Date Occurring In             Class A-4 Prepayment Shift Percentage

October 1997 through September 2002........                 0%
October 2002 through September 2003........                30%
October 2003 through September 2004........                40%
October 2004 through September 2005........                60%
October 2005 through September 2006........                80%
October 2006 and thereafter................               100%

     Class A-4 Priority Amount: For any Distribution Date, the lesser of (i) the
Class A Subclass  Principal  Balance of the Class A-4  Certificates  and (ii) an
amount equal to (A) the sum of (1) the product of (a) the Class A-4  Percentage,
(b) the Class A Percentage  and (c) the Scheduled  Principal  Amount and (2) the
product of (a) the Class A-4 Percentage,  (b) the Class A Prepayment Percentage,
(c) the Class A-4 Prepayment  Shift  Percentage,  (d) the Unscheduled  Principal
Amount  and (e)  63.6605899098%  minus  (B) the  product  of (1) the  Class  A-4
Percentage,  (2) the Class A Percentage, (3) the Scheduled Principal Amount, (4)
the Class A-4 Prepayment Shift Percentage and (5) 36.3394100902%.

     Class A-PO Certificate:  Any one of the Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-PO and Exhibit D 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 Distribution  Amount As to any Distribution  Date, the aggregate
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-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 a  Servicer,  the Master  Servicer or the
         Trust Administrator in respect of such defective Mortgage Loan.

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

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

     Class A-WIO Certificate:  Any one of the Certificates executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit A-WIO and Exhibit D hereto.

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

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


     Class A-WIO Notional  Amount:  As to any  Distribution  Date, the aggregate
Scheduled   Principal   Balance  of  the  Premium  Mortgage  Loans  as  of  such
Distribution Date.

     Class A-WIO  Pass-Through  Rate: As to any  Distribution  Date, a per annum
rate equal to the  Weighted  Average Net Mortgage  Interest  Rate of the Premium
Mortgage Loans minus 6.750%

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

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

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

     Class B Pass-Through Rate: As to any Distribution Date, 6.750% per annum.

     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 and Class B-5 Principal Balance.

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

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

     Class B Subclass  Interest Accrual Amount:  As to any Distribution Date and
any Class B Subclass,  an amount equal to (i) the product of 1/12th of the Class
B Pass-Through  Rate and the Class B Subclass  Principal Balance of such Class B
Subclass as of the  Determination  Date preceding such  Distribution  Date minus
(ii) the Class B Subclass  Interest  Percentage  of such Class B Subclass 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).

     Class B Subclass Interest  Percentage:  As to any Distribution Date and any
Class B Subclass,  the  percentage  calculated  by dividing the Class B Subclass
Interest Accrual Amount of such Class B Subclass  (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 Class B
Subclass Interest Accrual Amount).

     Class B Subclass 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 or Class B-5 Interest
Shortfall Amount.

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

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

     Class B Subclass  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 or Class B-5 Prepayment Percentage.

     Class B Subclass Principal Balance: Any of the Class B-1 Principal Balance,
Class B-2 Principal Balance,  Class B-3 Principal  Balance,  Class B-4 Principal
Balance or Class B-5 Principal Balance.

     Class B Subclass  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  or Class B-5 Unpaid
Interest Shortfall.

     Class B-1 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-1 and Exhibit D 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 eighth, ninth and tenth of Section 4.01(a).

     Class B-1 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  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 eighth 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 a
         Servicer,  the Master Servicer or the Trust Administrator in respect of
         such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass 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, 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-1 Principal
Balance  (determined as of the  Determination  Date preceding such  Distribution
Date) and the  denominator of which is the sum of the Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  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-1  Certificates  are not  eligible  to  receive
distributions of principal in accordance with Section 4.01(d)(i),  the Class B-1
Percentage for such Distribution Date will be zero.

     Class B-1 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-1  Principal  Balance  (determined  as of the  Determination  Date
preceding such Distribution Date) and the denominator of which is the sum of the
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  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-1
Certificates  are  not  eligible  to  receive   distributions  of  principal  in
accordance with Section 4.01(d)(i), the Class B-1 Prepayment Percentage for such
Distribution Date will be zero.

     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 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-1  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 M
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 ninth of Section 4.01(a).

     Class B-2 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-2 and Exhibit D 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 eleventh, twelfth and thirteenth of Section 4.01(a).

     Class B-2 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  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 eleventh 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 a
         Servicer,  the Master Servicer or the Trust Administrator in respect of
         such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass 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 Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  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
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  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 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-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  the Class M
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 twelfth of Section 4.01(a).

     Class B-3 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-3 and Exhibit D 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 fourteenth, fifteenth and sixteenth of Section 4.01(a).

     Class B-3 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  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 fourteenth 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 a
         Servicer,  the Master Servicer or the Trust Administrator in respect of
         such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass 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 Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  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
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  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  sixteenth of Section 4.01(a)
and (B) as a  result  of a  Principal  Adjustment  and (b) the  Realized  Losses
through such Determination Date allocated 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 M
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 fifteenth of Section 4.01(a).

     Class B-4 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-4 and Exhibit D 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 seventeenth, eighteenth, and nineteenth of Section 4.01(a).

     Class B-4 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  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 seventeenth 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 a
         Servicer,  the Master Servicer or the Trust Administrator in respect of
         such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass 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 Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  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
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  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 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-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 M
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 eighteenth of Section 4.01(a).

     Class B-5 Certificate:  Any one of the  Certificates  executed by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit B-5 and Exhibit D 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 twentieth, twenty-first, and twenty-second of Section 4.01(a).

     Class B-5 Interest  Shortfall  Amount:  As to any  Distribution  Date,  any
amount by which the Class B Subclass  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 twentieth 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 a
         Servicer,  the Master Servicer or the Trust Administrator in respect of
         such defective Mortgage Loan;

provided,  however,  that if an Optimal  Adjustment Event occurs with respect to
such Subclass 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 Class M Principal  Balance
and the Class B Subclass Principal  Balances of the Class B Subclasses  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
Class M  Principal  Balance and the Class B Subclass  Principal  Balances of the
Class  B  Subclasses  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 pursuant to Paragraph  twenty-second of Section 4.01(a)
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 M  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 twenty-first of Section 4.01(a).

     Class M  Certificate:  Any one of the  Certificates  executed  by the Trust
Administrator and authenticated by the Trust Administrator or the Authenticating
Agent in substantially the form set forth in Exhibit C and Exhibit D hereto.

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

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

     Class M Interest  Accrual Amount:  As to any  Distribution  Date, an amount
equal to (i) the  product  of 1/12th of the  Class M  Pass-Through  Rate and the
Class  M  Principal  Balance  as  of  the  Determination   Date  preceding  such
Distribution Date minus (ii) (x) any Non-Supported  Interest Shortfall allocated
to the Class M 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 M Certificates with respect to
such Distribution Date pursuant to Section 4.02(e).

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

     Class M 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 M 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 M  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  M  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 M  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 a
         Servicer,  the Master Servicer or the Trust Administrator in respect of
         such defective Mortgage Loan;

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

     Class M Pass-Through Rate: As to any Distribution Date, 6.750% per annum.

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

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

     Class M Principal Balance: As to the first Determination Date, the Original
Class M Principal Balance.  As of any subsequent  Determination Date, the lesser
of (i) the  Original  Class M Principal  Balance less the sum of (a) all amounts
previously  distributed  in  respect  of  the  Class  M  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 M 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 M Unpaid Interest Shortfall: As to any Distribution Date, the amount,
if any, by which the  aggregate  of the Class M Interest  Shortfall  Amounts for
prior Distribution  Dates is in excess of the amounts  distributed in respect of
the Class M Certificates on prior Distribution Dates pursuant to Paragraph sixth
of Section 4.01(a).

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

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

     Closing  Date:  The date of initial  issuance of the  Certificates,  as set
forth in Section 11.22.

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

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

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

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

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

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

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

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

     Current Class A Interest  Distribution Amount: As to any Distribution Date,
the  amount  distributed  in  respect  of the  Class A  Subclasses  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 Class B  Certificates  pursuant  to
Paragraphs 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 Class B Subclass  Principal Balances of the Class B-2, Class B-3,
Class B-4 and Class B-5  Certificates by the sum of the Class A Non-PO Principal
Balance,  the Class M 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 Class B Subclass  Principal  Balances of the Class B-3, Class B-4
and Class B-5 Certificates by the sum of the Class A Non-PO  Principal  Balance,
the Class M 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 Class B Subclass  Principal  Balances  of the Class B-4 and Class
B-5 Certificates by the sum of the Class A Non-PO Principal Balance, the Class M
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 Class B Subclass  Principal Balance of the Class B-5 Certificates by the sum
of the Class A Non-PO Principal  Balance,  the Class M Principal Balance and the
Class B Principal Balance. As to the first Distribution Date, the Original Class
B-4 Fractional Interest.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     Discount  Mortgage Loan: A Mortgage Loan with a Net Mortgage  Interest Rate
of less than 6.750%.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

     Fitch: Fitch Investors Service, L.P., or its successor in interest.

     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  $3,403,567.26  minus  the  aggregate  amount  of Fraud  Losses
allocated  solely to the Class B Certificates in accordance with Section 4.02(a)
since the Cut-Off Date, and (Y) from the first through fifth  anniversary of the
Cut-Off  Date, an amount equal to (1) the lesser of (a) the Fraud Loss Amount as
of the  most  recent  anniversary  of the  Cut-Off  Date  and (b)  1.00%  of the
aggregate  outstanding  principal balance of all of the Mortgage Loans as of the
most recent anniversary of the Cut-Off Date minus (2) the Fraud Losses allocated
solely to the Class B Certificates  in accordance with Section 4.02(a) since the
most recent anniversary of the Cut-Off Date. On and after the Cross-Over Date or
after the fifth  anniversary  of the Cut-Off Date the Fraud Loss Amount shall be
zero.

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

     Holder:  See "Certificateholder."

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

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

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

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

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

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

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

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

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

     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 11.27.

     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.

     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).

     Month End Interest:  As defined in each Servicing Agreement.

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

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

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

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

     Mortgage Loan Schedule:  The list of the Mortgage Loans  transferred to the
Trust Administrator on the Closing Date as part of the Trust Estate and attached
hereto as Exhibits  F-1, 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)    whether  such  Mortgage  Loan  is a  T.O.P.
                           Mortgage Loan;

                   (xv)    the Master Servicing Fee; and

                  (xvi)    for  Mortgage  Loans  identified  on Exhibit F-3, the
                           name of the Servicer with respect thereto.

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

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

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

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

     Mortgagor:  The obligor on a Mortgage Note.

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

     Net Liquidation Proceeds:  As to any Liquidated Loan,  Liquidation Proceeds
net of Liquidation Expenses. For all purposes of this Agreement, Net Liquidation
Proceeds shall be allocated  first to accrued and unpaid interest on the related
Mortgage Loan and then to the unpaid principal balance thereof.

     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  11.26 with respect to
such  Mortgage  Loan and (b) the  Master  Servicing  Fee  Rate,  as set forth in
Section  11.27  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 Partial Liquidation Proceeds: Partial Liquidation Proceeds with respect
to a  Mortgage  Loan net of  unreimbursed  Liquidation  Expenses  incurred  with
respect to such Mortgage Loan. For all purposes of this  Agreement,  Net Partial
Liquidation  Proceeds shall be allocated first to accrued and unpaid interest on
the related Mortgage Loan and then to the unpaid principal balance thereof.

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

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

     Non-PO Fraction:  With respect to any Mortgage Loan, the lesser of (i) 1.00
and (ii) the quotient  obtained by dividing the Net Mortgage  Interest  Rate for
such Mortgage Loan by 6.750%.

     Non-PO  Voting  Interest:  The ratio  obtained by dividing the Pool Balance
(Non-PO  Portion) by the sum of the Pool Balance  (Non-PO  Portion) and the Pool
Balance (PO Portion).

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

     Non-Supported  Interest  Shortfall:  With respect to any Distribution Date,
the excess,  if any,  of the  aggregate  Prepayment  Interest  Shortfall  on the
Mortgage  Loans over the  aggregate  Compensating  Interest with respect to such
Distribution  Date. With respect to each Distribution Date occurring on or after
the Cross-Over Date, the Non-Supported Interest Shortfall determined pursuant to
the preceding  sentence will be increased by the amount of any  Cross-Over  Date
Interest  Shortfall  for such  Distribution  Date.  Any  Non-Supported  Interest
Shortfall  will be  allocated to (a) the Class A  Certificates  according to the
percentage  obtained by dividing the Class A Non-PO Principal Balance by the sum
of the Class A Non-PO Principal  Balance,  the Class M Principal Balance and the
Class B  Principal  Balance,  (b)  the  Class M  Certificates  according  to the
percentage  obtained by dividing the Class M Principal Balance by the sum of the
Class A Non-PO Principal Balance,  the Class M Principal Balance and the Class B
Principal  Balance and (c) 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,  the  Class M  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 and Exhibit F-2 Mortgage Loans initially by Norwest
Mortgage.

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

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

     Optimal  Adjustment  Event: With respect to the Class M Certificates or any
Class B Subclass and any  Distribution  Date, an Optimal  Adjustment  Event will
occur with  respect to such Class or Subclass if: (i) the  principal  balance of
such Class or Subclass 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) any Class A  Subclass  Principal
Balance would be subject to further  reduction as a result of the third or fifth
sentence of the  definition  of Class A Subclass  Principal  Balance or (b) with
respect to any Class B Subclass,  the Class M  Principal  Balance or the Class B
Subclass  Principal  Balance  of a  Class  B  Subclass  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 M  Principal
Balance,  Class B-1 Principal Balance,  Class B-2 Principal  Balance,  Class B-3
Principal Balance, Class B-4 Principal Balance or Class B-5 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 Class A
Subclass  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 A Subclass  Principal  Balance:  Any of the Original Class A
Subclass Principal Balances as set forth in Section 11.05.

     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 and Original Class B-5
Principal Balance, as set forth in Section 11.16.

     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 and the Original Class B-5 Principal Balance by the sum of the
Original  Class A Non-PO  Principal  Balance,  the  Original  Class M  Principal
Balance and the  Original  Class B Principal  Balance.  The  Original  Class B-1
Fractional Interest is specified in Section 11.18.

     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 and the Original  Class B-5
Principal  Balance by the sum of the Original Class A Non-PO Principal  Balance,
the  Original  Class M  Principal  Balance  and the  Original  Class B Principal
Balance.  The  Original  Class B-2  Fractional  Interest is specified in Section
11.19.

     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 and the Original Class B-5 Principal  Balance by the sum of the Original
Class A Non-PO Principal Balance, the Original Class M Principal Balance and the
Original Class B Principal Balance.  The Original Class B-3 Fractional  Interest
is specified in Section 11.20.

     Original Class B-4 Fractional Interest:  As to the first Distribution Date,
the percentage  obtained by dividing the Original Class B-5 Principal Balance by
the sum of the Original Class A Non-PO Principal  Balance,  the Original Class M
Principal Balance and the Original Class B Principal Balance. The Original Class
B-4 Fractional Interest is specified in Section 11.21.

     Original Class B-1  Percentage:  The Class B-1 Percentage as of the Cut-Off
Date, as set forth in Section 11.11.

     Original Class B-2  Percentage:  The Class B-2 Percentage as of the Cut-Off
Date, as set forth in Section 11.12.

     Original Class B-3  Percentage:  The Class B-3 Percentage as of the Cut-Off
Date, as set forth in Section 11.13.

     Original Class B-4  Percentage:  The Class B-4 Percentage as of the Cut-Off
Date, as set forth in Section 11.14.

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

     Original Class B-1 Principal Balance: The Class B-1 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-2 Principal Balance: The Class B-2 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-3 Principal Balance: The Class B-3 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-4 Principal Balance: The Class B-4 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class B-5 Principal Balance: The Class B-5 Principal Balance as of
the Cut-Off Date, as set forth in Section 11.17.

     Original Class M Fractional  Interest:  As to the first  Distribution Date,
the percentage  obtained by dividing the Original  Class B Principal  Balance by
the sum of the Original Class A Non-PO Principal  Balance,  the Original Class M
Principal Balance and the Original Class B Principal Balance. The Original Class
M Fractional Interest is specified in Section 11.10.

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

     Original Class M Principal Balance: The Class M Principal Balance as of the
Cut-Off Date, as set forth in Section 11.09.

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

     Original  Subordinated  Principal Balance:  The sum of the Original Class M
Principal Balance and the Original Class B Principal Balance.

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

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

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

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

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

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

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

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

     Percentage  Interest:  With respect to a Class A Certificate  (other than a
Class A-WIO Certificate), the undivided percentage interest obtained by dividing
the original  principal  balance of such  Certificate by the aggregate  original
principal balance of all Certificates of such Class A Subclass.  With respect to
the Class A-WIO  Certificate,  the percentage  interest specified on the face of
such  Certificate.  With  respect  to  a  Class  M  Certificate,  the  undivided
percentage  interest obtained by dividing the original principal balance of such
Certificate by the aggregate  original  principal balance of all Certificates of
such Class.  With respect to a Class B  Certificate,  the  undivided  percentage
interest obtained by dividing the original principal balance of such Certificate
by the aggregate  original principal balance of all Certificates of such Class B
Subclass.

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

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

     Plan:  As defined in Section 5.02(c).

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

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

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

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

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

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

               (c) those  portions of each  payment of interest on a  particular
          Mortgage  Loan which  represent (i) the  applicable  Servicing Fee and
          (ii) 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  Subclasses of
          the  Class  A or  Class B  Certificates  or the  Class M  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 Mortgage Loan: A Mortgage Loan with a Net Mortgage Interest Rate of
6.750% or greater.

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

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

     Principal  Adjustment:  In the event  that the  Class M  Optimal  Principal
Amount,  Class B-1 Optimal Principal Amount, Class B-2 Optimal Principal Amount,
Class B-3 Optimal Principal Amount,  Class B-4 Optimal Principal Amount or Class
B-5 Optimal  Principal  Amount is calculated  in accordance  with the proviso in
such definition with respect to any Distribution Date, the Principal  Adjustment
for the Class M Certificates or such Class B Subclass shall equal the difference
between  (i) the  amount  that  would  have been  distributed  to such  Class or
Subclass 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 or Subclass.

     Principal  Balance:  Each of the Class A Subclass Principal  Balances,  the
Class M  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.

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

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

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

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

     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  and Class M Certificates  are
Moody's and Fitch. The Rating Agency for the Class B-1, Class B-2, Class B-3 and
Class B-4  Certificates  is Moody's.  If any such  agency or a  successor  is no
longer in existence,  "Rating  Agency" shall be such  statistical  credit rating
agency, or other comparable  Person,  designated by the Seller,  notice of which
designation  shall be given to the  Trustee,  the  Trust  Administrator  and the
Master Servicer.  References herein to the highest short-term rating category of
a Rating Agency shall mean P-1 in the case of Moody's, F-1+ in the case of Fitch
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 in the case of Moody's,  AAA in the case of Fitch
and in the case of any other  Rating  Agency shall mean its  equivalent  of such
rating without any plus or minus.

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

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

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

     Relevant Anniversary:  See "Bankruptcy Loss Amount."

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

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

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

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

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

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

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

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

     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  that  amount  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 related 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., First Union Mortgage Corporation,
SunTrust Mortgage Inc., Cimarron Mortgage Corp., Citicorp Mortagage, Inc., First
Bank National  Association,  FT Mortgage  Companies and The Huntington  Mortgage
Company as Servicer under the related Servicing Agreement.

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

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

     Servicing  Fee Rate:  With  respect  to a  Mortgage  Loan,  as set forth in
Section 11.26.

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

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

     Single  Certificate:  A Certificate of any Class or Subclass that evidences
the smallest permissible  Denomination for such Class or Subclass,  as set forth
in Section 11.25.

     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 Trust
                           Administrator  or  the  Servicer  or any of
                           their agents or employees; or

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

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

     Special Hazard Loss Amount: As of any Distribution Date, an amount equal to
$1,938,442.00 minus the sum of (i) the aggregate amount of Special Hazard Losses
allocated  solely to the Class B Certificates in accordance with Section 4.02(a)
and (ii) the  Special  Hazard  Adjustment  Amount  (as  defined  below)  as most
recently  calculated.  For each  anniversary  of the Cut-Off  Date,  the Special
Hazard  Adjustment  Amount shall be calculated and shall be equal to the amount,
if any, by which the amount calculated in accordance with the preceding sentence
(without giving effect to the deduction of the Special Hazard  Adjustment Amount
for such  anniversary)  exceeds  the  greater of (A) the  product of the Special
Hazard Percentage for such anniversary  multiplied by the outstanding  principal
balance of all the Mortgage Loans on the Distribution Date immediately preceding
such  anniversary,  (B) twice the outstanding  principal balance of the Mortgage
Loan in the Trust Estate which has the largest outstanding  principal balance on
the Distribution Date immediately  preceding such anniversary and (C) that which
is necessary to maintain the original ratings on the Certificates,  as evidenced
by letters to that effect  delivered by Rating  Agencies to the Master  Servicer
and the Trust  Administrator.  On and or 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.

     Subclass:  Each  subdivision  of  the  Class  A  Certificates,  denominated
respectively  as Class A-1, Class A-2,  Class A-3, Class A-4, Class A-PO,  Class
A-WIO  and  Class  A-R  and  each  subdivision  of  the  Class  B  Certificates,
denominated respectively as Class B-1, Class B-2, Class B-3, Class B-4 and Class
B-5.

     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.

     T.O.P.  Mortgage  Loan:  Any Mortgage  Loan that was  originated by Norwest
Mortgage or an  affiliate  thereof in  connection  with the "Title  Option Plus"
program  and which is not  covered  by a title  insurance  policy.  Each  T.O.P.
Mortgage Loan shall be identified as such in the Mortgage Loan Schedule.

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

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

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

     Unpaid  Interest  Shortfalls:  Each of the Class A Subclass Unpaid Interest
Shortfalls, the Class M Unpaid Interest Shortfall, 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 and the Class B-5
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  that  amount  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(g).

     Voting  Interest:  With respect to any provisions  hereof providing for the
action,  consent  or  approval  of the  Holders of all  Certificates  evidencing
specified Voting  Interests in the Trust Estate,  (a) the Holders of the Class A
Certificates will  collectively be entitled to the Class A Voting Interest,  (b)
the Holders of the Class M  Certificates  will  collectively  be entitled to the
then applicable  percentage of the aggregate Voting Interest  represented by all
Certificates  equal to the product of (i) the ratio  obtained  by  dividing  the
Class M Principal  Balance by the sum of the Class A Non-PO  Principal  Balance,
the Class M Principal  Balance  and the Class B  Principal  Balance and (ii) the
Non-PO  Voting  Interest  and (c) the Holders of the Class B  Certificates  will
collectively  be  entitled  to the  balance  of the  aggregate  Voting  Interest
represented by all Series 1997-15  Certificates.  The aggregate Voting Interests
of each Subclass of Class A  Certificates  (other than the Class A-WIO and Class
A-PO  Certificates)  on any date will be equal to the  product of (a) 99% of the
portion  of the  Class  A  Voting  Interest  represented  by  clause  (A) of the
definition  thereof  and (b) the  fraction  obtained  by  dividing  the  Class A
Subclass  Principal  Balance  of such  Class A  Subclass  by the  Class A Non-PO
Principal Balance on such date. The aggregate Voting Interest of the Class A-WIO
Certificates  on any date will be 1% of the Class A Voting Interest on such date
represented  by clause (A) of the  definition  of Class A Voting  Interest.  The
aggregate  Voting  Interests of the Class A-PO  Certificates on any date will be
equal to the Class A Voting Interest represented by clause (B) of the definition
thereof. The aggregate Voting Interests of each Subclass of Class B Certificates
will equal such Subclass's pro rata portion of the Voting Interest  allocated to
the Class B Certificates based on such Subclass's outstanding principal balance.
Each  Certificateholder of a Class or Subclass will have a Voting Interest equal
to the  product  of the Voting  Interest  to which  such  Class or  Subclass  is
collectively  entitled  and the  Percentage  Interest  in such Class or Subclass
represented by such Holder's Certificates. With respect to any provisions hereof
providing  for  action,  consent  or  approval  of each  Class  or  Subclass  of
Certificates  or  specified   Classes  or  Subclasses  of   Certificates,   each
Certificateholder  of a Class or  Subclass  will have a Voting  Interest in such
Class or Subclass  equal to such Holder's  Percentage  Interest in such Class or
Subclass.

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

Section 1.02. Acts of Holders.

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

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

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

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

Section 1.03. Effect of Headings and Table of Contents.

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

Section 1.04. Benefits of Agreement.

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


<PAGE>


ARTICLE II

CONVEYANCE OF MORTGAGE LOANS;
ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01. Conveyance of Mortgage Loans.

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

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

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

Section 2.02. Acceptance by Trust Administrator.

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

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

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

Section 2.03.  Representations and Warranties of the Master
               Servicer and the Seller.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                 (xvi) The  Mortgaged  Property  securing  each Mortgage Loan is
         insured by an insurer  acceptable to FNMA or FHLMC against loss by fire
         and such  hazards as are  covered  under a standard  extended  coverage
         endorsement,  in an amount which is not less than the lesser of 100% of
         the  insurable  value of the  Mortgaged  Property  and the  outstanding
         principal  balance of the Mortgage  Loan, but in no event less than the
         minimum amount  necessary to fully compensate for any damage or loss on
         a replacement  cost basis;  if the Mortgaged  Property is a condominium
         unit, it is included  under the coverage  afforded by a blanket  policy
         for  the  project;  if  upon  origination  of the  Mortgage  Loan,  the
         improvements  on the Mortgaged  Property were in an area  identified in
         the  Federal  Register by the Federal  Emergency  Management  Agency as
         having  special flood  hazards,  a flood  insurance  policy meeting the
         requirements  of  the  current  guidelines  of  the  Federal  Insurance
         Administration  is in  effect  with a  generally  acceptable  insurance
         carrier, in an amount representing  coverage not less than the least of
         (A) the  outstanding  principal  balance of the Mortgage  Loan, (B) the
         full  insurable  value of the  Mortgaged  Property  and (C) the maximum
         amount of  insurance  which  was  available  under  the Flood  Disaster
         Protection  Act of 1973;  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 180 months;

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

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

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

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

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

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

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

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

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

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

Section 2.04. Execution and Delivery of Certificates.

     The Trust  Administrator  acknowledges the assignment to it of the Mortgage
Loans and the delivery of the Owner Mortgage Loan Files to it, and, concurrently
with such  delivery,  has  executed  and  delivered  to or upon the order of the
Seller,  in exchange  for the  Mortgage  Loans  together  with all other  assets
included  in the  definition  of  "Trust  Estate",  receipt  of which is  hereby
acknowledged,  Certificates in authorized denominations which evidence ownership
of the entire Trust Estate.

Section 2.05.  Designation of Certificates; Designation of
               Startup Day and Latest Possible Maturity Date.

     The Seller hereby designates the Subclasses of Class A Certificates  (other
than the Class A-R Certificate),  the Class M Certificates and the Subclasses 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  October  25,  2012  for  purposes  of Code  Section
860G(a)(1).


<PAGE>


ARTICLE III

ADMINISTRATION OF THE TRUST ESTATE: SERVICING
OF THE MORTGAGE LOANS

Section 3.01. Certificate Account.

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

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

               (i)  Periodic  Advances  pursuant to Section  3.03(a) made by the
          Master Servicer or the Trust Administrator, if any; and

               (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.

Section 3.02. Permitted Withdrawals from the Certificate Account.

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

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

               (ii) to reimburse any Servicer,  the Master Servicer or the Trust
          Administrator  for any Periodic  Advances  determined in good faith to
          have become Nonrecoverable Advances;

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

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

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

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

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

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

               (ix) to pay to the Master  Servicer  or any  Servicer  out of Net
          Liquidation  Proceeds  allocable  to interest the amount of any unpaid
          Master  Servicing Fee or Servicing  Fee (as adjusted  pursuant to such
          Servicer's  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; and

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

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

Section 3.03. Advances by Master Servicer and Trust Administrator.

     (a) In the  event an Other  Servicer  fails to make any  required  Periodic
Advances of principal and interest on a Mortgage Loan as required by the related
Other Servicing  Agreement prior to the Distribution Date occurring in the month
during  which such  Periodic  Advance is due,  the  Master  Servicer  shall make
Periodic  Advances to the extent provided hereby.  In the event Norwest Mortgage
fails to make any  required  Periodic  Advances of  principal  and interest on a
Mortgage  Loan as  required  by the  Norwest  Servicing  Agreement  prior to the
Distribution  Date occurring in the month during which such Periodic  Advance is
due, the Trust Administrator shall, to the extent required by Section 8.15, make
such Periodic  Advance to the extent  provided  hereby,  provided that the Trust
Administrator  has previously  received the  certificate of the Master  Servicer
described in the following  sentence.  The Master  Servicer shall certify to the
Trust Administrator with respect to any such Distribution Date (i) the amount of
Periodic  Advances  required of Norwest Mortgage or such Other Servicer,  as the
case may be, (ii) the amount actually advanced,  (iii) the amount that the Trust
Administrator  or Master  Servicer  is required  to advance  hereunder  and (iv)
whether the Master Servicer has determined that it reasonably believes that such
Periodic  Advance is a  Nonrecoverable  Advance.  Amounts  advanced by the Trust
Administrator  or Master Servicer shall be deposited in the Certificate  Account
on the related  Distribution Date.  Notwithstanding  the foregoing,  neither the
Master Servicer nor the Trust Administrator will be obligated to make a Periodic
Advance that it reasonably  believes to be a Nonrecoverable  Advance.  The Trust
Administrator  may  conclusively  rely  for any  determination  to be made by it
hereunder  upon the  determination  of the Master  Servicer  as set forth in its
certificate.

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

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

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

Section 3.04. Trust Administrator to Cooperate;
              Release of Owner Mortgage Loan Files.

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

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

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

Section 3.05. Reports to the Trustee and Trust Administrator;
              Annual Compliance Statements.

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

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

Section 3.06. Title, Management and Disposition of Any REO Mortgage Loan.

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

Section 3.07.  Amendments to Servicing Agreements,
               Modification of Standard Provisions.

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

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

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

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

Section 3.08. Oversight of Servicing.

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

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

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

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

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

     The Seller shall be entitled,  at its option,  to repurchase  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;  provided,  however,  that the Cut-Off Date Principal
Balances of the Mortgage Loans repurchased  pursuant to this provision shall not
exceed 2.5% of the Cut-Off  Date  Aggregate  Principal  Balance of the  Mortgage
Loans. 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  through  the  last  day of the  month  in  which  such
repurchase occurs.  Upon the receipt of such purchase price, the Master Servicer
shall provide to the Trust  Administrator the certification  required by Section
3.04 and the Trust  Administrator  and the  Custodian,  if any,  shall  promptly
release to the Seller the Owner Mortgage Loan File relating to the Mortgage Loan
being repurchased.

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

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

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

Section 3.09. Termination and Substitution of Servicing Agreements.

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

Section 3.10. 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,  the
Class M Certificates  and the Class B-1 and Class B-2  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 Subclasses of Class A  Certificates,  pro rata based on their
respective  Class A Subclass  Interest Accrual Amounts in an aggregate amount up
to the sum of the Class A Subclass Interest Accrual Amounts with respect to such
Distribution Date;

     second, to the Subclasses of Class A Certificates,  pro rata based on their
respective Class A Subclass Unpaid Interest  Shortfall in an aggregate amount up
to the sum of the Class A Subclass Unpaid Interest Shortfall;

     third, concurrently, to the Class A Certificates (other than the Class A-PO
Certificates)  and the  Class  A-PO  Certificates,  pro  rata,  based  on  their
respective  Class A Non-PO  Optimal  Principal  Amount  and Class  A-PO  Optimal
Principal Amount, (A) to the Subclasses 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
Subclasses 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-5  Certificates  pursuant to  Paragraph
twenty-second, below, second to the Class B-4 Certificates pursuant to Paragraph
nineteenth,  below,  third to the Class B-3  Certificates  pursuant to Paragraph
sixteenth,  below,  fourth to the Class B-2  Certificates  pursuant to Paragraph
thirteenth,  below,  fifth to the Class B-1  Certificates  pursuant to Paragraph
tenth below, and sixth to the Class M Certificates pursuant to Paragraph seventh
below;

     fifth,  to the Class M Certificates in an amount up to the Class M Interest
Accrual Amount with respect to such Distribution Date;

     sixth,  to the Class M  Certificates  in an amount up to the Class M Unpaid
Interest Shortfall;

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

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

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

     tenth,  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 tenth 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;

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

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

     thirteenth,  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 thirteenth 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;

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

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

     sixteenth,  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 sixteenth 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;

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

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

     nineteenth,  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 nineteenth 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;

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

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

     twenty-second,  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  twenty-second 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; and

     twenty-third, to the Holder of the Class A-R Certificate.

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

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

     With  respect  to any  Distribution  Date,  the  amount  of  the  Principal
Adjustment,  if any,  attributable to any Class B Subclass will be allocated pro
rata based on principal  balance among the Class A Certificates  (other than the
Class A-WIO and Class A-PO Certificates), the Class M Certificates and any Class
B Subclass with a lower  numerical  designation  and the amount of the Principal
Adjustment,  if any,  attributable to the Class M Certificates will be allocated
to the Subclasses of Class A Certificates  (other than the Class A-WIO and Class
A-PO Certificates) pro rata based on the Class A Subclass Principal Balances.

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

     On each Distribution Date occurring prior to the Cross-Over Date, the Class
A Non-PO Principal  Distribution  Amount will be allocated among and distributed
in reduction of the Class A Subclass  Principal  Balances of the  Subclasses  of
Class A Certificates  (other than the Class A Subclass  Principal Balance of the
Class A-PO Certificates) concurrently, as follows:

                  (i)  36.3394100902% to the Class A-1  Certificates,  until the
Class A Subclass Principal Balance thereof has been reduced to zero; and

                  (ii) 63.6605899098% as follows:

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

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

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

                         fourth, to the Class A-4  Certificates,  without regard
                    to the Class A-4 Priority Amount, until the Class A Subclass
                    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 Subclasses of Class A Certificates  (other
than the Class A-PO  Certificates) pro rata in accordance with their outstanding
Class A Subclass  Principal Balances without regard to either the proportions or
the priorities set forth in Section 4.01(b).

     (d) (i) For  purposes  of  determining  whether the  Subclasses  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 M  Fractional  Interest is less than
         the  Original  Class M  Fractional  Interest  and the Class M Principal
         Balance is  greater  than zero,  the Class B-1,  Class B-2,  Class B-3,
         Class B-4 and Class B-5  Certificates  shall not be eligible to receive
         distributions of principal; or

                  (B) 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 and
         Class B-5 Certificates  shall not be eligible to receive  distributions
         of principal; or

                  (C) 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 and Class B-5
         Certificates  shall  not  be  eligible  to  receive   distributions  of
         principal; or

                  (D) 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 and Class B-5  Certificates
         shall not be eligible to receive distributions of principal; or

                  (E) 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  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 Class M  Certificates  and/or  the
Subclasses  of  Class  B  Certificates  entitled  to  receive  distributions  of
principal would reduce the Class M Principal Balance and/or the Class B Subclass
Principal Balances of the Class M Certificates  and/or the Subclasses of Class B
Certificates  entitled to receive  distributions  of principal below zero, first
the  Class M  Prepayment  Percentage  and/or  the  Class B  Subclass  Prepayment
Percentage of any affected Class B Subclass for such Distribution Date beginning
with the affected  Subclass with the lowest numerical  Subclass  designation and
then,  if  necessary,  the  Class M  Percentage  and/or  the  Class  B  Subclass
Percentage of such Subclass of the Class B  Certificates  for such  Distribution
Date shall be reduced to the respective percentages necessary to bring the Class
M Principal Balance and/or the Class B Subclass  Principal Balance of such Class
B Subclass to zero. The Class B Subclass Prepayment  Percentages and the Class B
Subclass  Percentages  of the  remaining  Class B Subclasses  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 Class M  Principal  Balance  and/or the Class B Subclass  Principal
Balances of the affected Class B Subclasses to zero; provided,  however, that if
the Class B Subclass Principal  Balances of all the Class B Subclasses  eligible
to  receive  distributions  of  principal  shall  be  reduced  to  zero  on such
Distribution  Date, the Class B Subclass  Prepayment  Percentage and the Class B
Subclass  Percentage of the Class B Subclass with the lowest numerical  Subclass
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  M  Prepayment   Percentage  and  the  Class  B  Subclass  Prepayment
Percentages  of  the  Class  B  Subclasses   having  lower  numerical   Subclass
designations,  if any, and the remainder of the Subordinated Percentage for such
Distribution  Date  minus  the sum of the  Class M  Percentage  and the  Class B
Subclass  Percentages of the Class B Subclasses having lower numerical  Subclass
designations,  if any, respectively.  Any entitlement of any Class B Subclass to
principal  payments  solely  pursuant  to this  clause (ii) shall not cause such
Subclass to be regarded as being eligible to receive principal distributions for
the purpose of applying the  definition  of its Class B Subclass  Percentage  or
Class B Subclass 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 or Subclass) 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
11.24,  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 (based on, with respect to each Class or  Subclass,  the  aggregate of the
Percentage  Interests  represented by  Certificates  of the applicable  Class or
Subclass  of  Certificates  held  by  such  Holder)  of  the  Class  A  Subclass
Distribution  Amount with respect to each Subclass of Class A Certificates,  the
Class M  Distribution  Amount with respect to the Class M  Certificates  and the
Class B Subclass Distribution Amount with respect to each such Subclass of Class
B Certificates.

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

     (f) The  Paying  Agent (or if no Paying  Agent is  appointed  by the Master
Servicer,  the Master  Servicer)  shall  withhold or cause to be  withheld  such
amounts as may be required  by the Code  (giving  full effect to any  exemptions
from  withholding  and  related  certifications  required  to  be  furnished  by
Certificateholders  and any reductions to withholding by virtue of any bilateral
tax  treaties  and any  applicable  certification  required to be  furnished  by
Certificateholders  with  respect  thereto)  from  distributions  to be  made to
Persons other than U.S. Persons ("Non-U.S.  Persons"). Amounts withheld pursuant
to this  Section  4.01(f)  shall be treated as having  been  distributed  to the
related  Certificateholder for all purposes of this Agreement.  For the purposes
of this  paragraph,  a "U.S.  Person"  is a citizen  or  resident  of the United
States,  a  corporation,  partnership or other entity created or organized in or
under the laws of the United States or any  political  subdivision  thereof,  an
estate that is subject to United  States  federal  income tax  regardless of the
source  of its  income  or a trust  if (i) for  taxable  years  beginning  after
December 31, 1996 (or for taxable  years  ending  after August 20, 1996,  if the
trustee has made an  applicable  election),  a court within the United States is
able to exercise primary  supervision over the administration of such trust, and
one or more U.S. Persons have the authority to control all substantial decisions
of such  trust or (ii) for all other  taxable  years,  such  trust is subject to
United States federal income tax regardless of the source of its income.

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

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

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

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

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

     sixth, to the Class M Certificates  until the Class M 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 or Subclass'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),  Class M  Certificates  and Class B
Certificates  based on the Class A Non-PO Principal  Balance,  Class M 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  Subclasses of Class A Certificates  (other than the
Class  A-PO   Certificates)  in  accordance  with  the  Class  A  Subclass  Loss
Percentages as of such Determination  Date. Any such loss allocated to the Class
B Certificates  shall be allocated pro rata among the outstanding  Subclasses of
Class B Certificates based on their Class B Subclass Principal Balances.

     (c) Any Realized Losses  allocated to a Subclass of Class A Certificates or
Class B Certificates or to the Class M Certificates  pursuant to Section 4.02(a)
or Section 4.02(b) shall be allocated among the Certificates of such Subclass or
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 Subclasses of Class A Certificates,  the Class M Certificates or any
Subclasses of Class B Certificates,  each outstanding Class or Subclass 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),  Class M 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 or Subclass on the  Distribution  Date in the month following the month in
which  such  recovery  is  received.  When the  Principal  Balance of a Class or
Subclass of Certificates  has been reduced to zero, such Class or Subclass 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 or Subclass in accordance with the preceding provisions,  each outstanding
Class  or  Subclass  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  or  Subclass.  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 and
Subclass of Certificates  whose principal  balances were previously reduced as a
result of such Realized  Loss being less than such Class or Subclass  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  among  the Class A
Certificates,  Class M Certificates and Class B Certificates,  pro rata based on
the Class A Interest Accrual Amount, the Class M Interest Accrual Amount and the
Class B Interest  Accrual  Amount for the  related  Distribution  Date,  without
regard to any reduction  pursuant to this  sentence.  Any such loss allocated to
the Class A Certificates shall be allocated among the outstanding  Subclasses of
Class A Certificates based on their Class A Subclass Interest  Percentages.  Any
such loss  allocated to the Class B  Certificates  will be  allocated  among the
outstanding  Subclasses of Class B Certificates  based on their Class B Subclass
Interest Percentages.  In addition,  after the Class M Principal Balance and the
Class B Principal  Balance  have 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 Subclasses
of Class A Certificates based on their Class A Subclass Interest Percentages.

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

Section 4.03. Paying Agent.

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

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

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

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

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

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

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

Section 4.04.   Statements to Certificateholders;
                Report to the Trust Administrator and the Seller.

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

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

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

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

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

                  (vi) (a) the  amount of such  distribution  to Holders of each
         Class B Subclass  allocable to interest,  (b) the amount of the Current
         Class B Interest Distribution Amount allocated to each Class B Subclass
         and the Pass-Through Rate applicable to such Distribution Date, (c) any
         Class B Subclass  Interest  Shortfall  Amounts  arising with respect to
         such  Distribution  Date  and any  remaining  Class B  Subclass  Unpaid
         Interest  Shortfall  with respect to each Class B Subclass after giving
         effect  to such  distribution,  (d)  the  amount  of any  Non-Supported
         Interest  Shortfall  allocated  to  each  Class  B  Subclass  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 B Subclass for such Distribution Date;

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

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

                  (ix) the  Class A  Principal  Balance,  the  Class A  Subclass
         Principal Balance of each Subclass of Class A Certificates, the Class M
         Principal  Balance,  the  Class B  Principal  Balance  and the  Class B
         Subclass  Principal Balance of each Subclass 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;

                  (x) 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;

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

                  (xii) 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);

                  (xiii) 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);

                  (xiv) the Class M 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);

                  (xv)  the  Class M  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);

                  (xvi) the Class B-1, Class B-2, Class B-3, Class B-4 and Class
         B-5  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);

                  (xvii) the Class  B-1,  Class  B-2,  Class B-3,  Class B-4 and
         Class B-5 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);

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

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

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

                  (xxi) 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;

                  (xxii) 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;

                  (xxiii) the aggregate amount of Bankruptcy Losses allocated to
         each Subclass of Class B  Certificates  or,  following the reduction of
         the  Class  B  Principal  Balance  to  zero,  solely  to  the  Class  M
         Certificates  in  accordance  with Section  4.02(a)  since the Relevant
         Anniversary;

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

                  (xxv) 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;

                  (xxvi) 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;

                  (xxvii) in the case of the Class A-WIO Certificates, the Class
         A-WIO  Notional  Amount  and  Class  A-WIO  Pass-Through  Rate for such
         Distribution Date;

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

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

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

     In the case of information  furnished with respect to a Subclass of Class A
Certificates  pursuant  to  clauses  (i)  and  (ii)  above,  with  the  Class  M
Certificates  pursuant  to clauses  (iii) and (iv)  above and with  respect to a
Class B Subclass  pursuant to clauses (v) and (vi) above,  the amounts  shall be
expressed as a dollar amount per Class A, Class M or Class B Certificate  (other
than the Class A-WIO and Class A-R Certificates) with a $1,000 Denomination, and
as a dollar amount per Class A-R Certificate  with a $100  Denomination and as a
dollar amount per Class A-WIO Certificate with a 1% 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,  the information set forth in clauses (iii)
and (iv)(a) above in the case of a Class M Certificateholder and the information
contained  in  clauses  (v)  and  (vi)(a)  above  in  the  case  of  a  Class  B
Certificateholder  aggregated  for  such  calendar  year or  applicable  portion
thereof during which such Person was a Certificateholder. Such obligation of the
Master  Servicer  shall be deemed  to have been  satisfied  to the  extent  that
substantially  comparable  information  shall be provided by the Master Servicer
pursuant to any requirements of the Code from time to time in force.

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

     In addition to the reports  required  pursuant to this  Section  4.04,  the
Master  Servicer  shall make  available  upon  request  to each  Holder and each
proposed  transferee  of a Class B-3,  Class B-4 or Class B-5  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 Trust  Administrator
acquires  an  interest  in a Mortgaged  Property  through  foreclosure  or other
comparable  conversion  in full  or  partial  satisfaction  of a  Mortgage  Loan
serviced by such Servicer,  or (ii) knows or has reason to know that a Mortgaged
Property has been  abandoned.  Reports from the  Servicers  shall be in form and
substance sufficient to meet the reporting  requirements imposed by Code Section
6050J.  In  addition,  each  Servicer  shall  provide the Master  Servicer  with
sufficient  information  to allow the Master  Servicer  to, for each year ending
after the  Cut-Off  Date,  provide,  or cause to be  provided,  to the  Internal
Revenue  Service and the Mortgagors  such  information as is required under Code
Sections 6050H (regarding payment of interest) and 6050P (regarding cancellation
of indebtedness).

Section 4.06.  Calculation of Amounts; Binding Effect of
               Interpretations and Actions of Master Servicer.

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

THE CERTIFICATES

Section 5.01. The Certificates.

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

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

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

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

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

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

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

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

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

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

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

Section 5.02. Registration of Transfer and Exchange of Certificates.

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

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

     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 or Subclass upon surrender
of the  Certificates to be exchanged at any such office or agency.  Whenever any
Certificates  are so surrendered  for exchange,  the Trust  Administrator  shall
execute,  and shall date,  authenticate  (or cause the  Authenticating  Agent to
authenticate) and deliver, the Certificates which the  Certificateholder  making
the exchange is entitled to receive.  Every Certificate presented or surrendered
for transfer or exchange shall (if so required by the  Certificate  Registrar or
the Trust  Administrator)  be duly endorsed by, or be  accompanied  by a written
instrument of transfer in form satisfactory to the Certificate  Registrar,  duly
executed by the Holder thereof or his attorney duly authorized in writing.

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

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

     (b) No  transfer  of a Class  A-WIO,  Class  B-3,  Class  B-4 or Class  B-5
Certificate  shall  be  made  (other  than  the  transfer  of  the  Class  A-WIO
Certificates  to an  affiliate  of the Seller on the  Closing  Date)  unless the
registration  requirements  of the Securities  Act of 1933, as amended,  and any
applicable  State  securities laws are complied with, or such transfer is exempt
from the registration  requirements under said Act and laws. In the event that a
transfer is to be made in reliance upon an exemption  from said Act or laws, (i)
unless such transfer is made in reliance on Rule 144A,  the Trust  Administrator
or the Seller may, if such  transfer is to be made within  three years after the
later of (i) the date of the initial sale of  Certificates or (ii) the last date
on which the Seller or any  affiliate  thereof was a Holder of the  Certificates
proposed to be transferred, require a Class A-WIO, Class B-3, Class B-4 or Class
B-5  Certificateholder to deliver a written Opinion of Counsel acceptable to and
in form and substance satisfactory to the Trust Administrator and the Seller, to
the effect that such transfer may be made  pursuant to an exemption,  describing
the applicable  exemption and the basis  therefor,  from said Act and laws or is
being made pursuant to said Act and laws,  which Opinion of Counsel shall not be
an expense of the Trust  Administrator,  the  Trustee,  the Seller or the Master
Servicer,  and (ii) the Trust  Administrator shall require the transferee (other
than of a Class A-WIO  Certificate  where such transferee is an affiliate of the
Seller and such  transfer is made on the Closing  Date) to execute an investment
letter in the form of  Exhibit J hereto  certifying  to the Seller and the Trust
Administrator the facts surrounding such transfer, which investment letter shall
not be an expense of the Trust  Administrator,  the  Trustee,  the Seller or the
Master Servicer.  The Holder of a Class A-WIO, Class B-3, Class B-4 or Class B-5
Certificate  desiring to effect such transfer  shall,  and does hereby agree to,
indemnify the Trust Administrator,  the Trustee, the Seller, the Master Servicer
and any Paying Agent acting on behalf of the Trustee  against any liability that
may result if the  transfer is not so exempt or is not made in  accordance  with
such federal and state laws.  Neither the Seller nor the Trust  Administrator is
under an obligation to register the Class A-WIO,  Class B-3,  Class B-4 or Class
B-5 Certificates under said Act or any other securities law.

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

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

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

     Upon notice to the Master Servicer that any legal or beneficial interest in
any  portion of the Class A-R  Certificate  has been  transferred,  directly  or
indirectly, to a disqualified organization or agent thereof (including a broker,
nominee, or middleman) in contravention of the foregoing restrictions,  (i) such
transferee  shall be deemed to hold the Class A-R  Certificate  in  constructive
trust for the last  transferor who was not a disqualified  organization or agent
thereof,  and such  transferor  shall be restored as the owner of 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 Class A-R  Certificate,  and (ii) the Master
Servicer agrees to furnish to the Internal Revenue Service and to any transferor
of the  Class A-R  Certificate  or such  agent  (within  60 days of the  request
therefor  by  the  transferor  or  agent)  such  information  necessary  to  the
application  of Code Section  860E(e) as may be required by the Code,  including
but not limited to the present value of the total anticipated  excess inclusions
with respect to the Class A-R Certificate (or portion thereof) for periods after
such transfer.  At the election of the Master  Servicer,  the cost to the Master
Servicer of computing  and  furnishing  such  information  may be charged to the
transferor or such agent referred to above;  however,  the Master Servicer shall
in no event be excused from furnishing such information.

Section 5.03. Mutilated, Destroyed, Lost or Stolen Certificates.

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

Section 5.04. Persons Deemed Owners.

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

Section 5.05. Access to List of Certificateholders' Names and Addresses.

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

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

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

Section 5.06. Maintenance of Office or Agency.

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

Section 5.07. Definitive Certificates.

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

Section 5.08. Notices to Clearing Agency.

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


<PAGE>


ARTICLE VI

THE SELLER AND THE MASTER SERVICER

Section 6.01. Liability of the Seller and the Master Servicer.

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

Section 6.02. Merger or Consolidation of the Seller or the Master Servicer.

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

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

Section 6.03.  Limitation on Liability of the Seller, the Master
               Servicer and Others.

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

Section 6.04. Resignation of the Master Servicer.

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

Section 6.05. Compensation to the Master Servicer.

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

Section 6.06. Assignment or Delegation of Duties by Master Servicer.

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

Section 6.07.  Indemnification of Trustee, Trust Administrator and
               Seller by  Master Servicer.

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


<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  FHMLC,   which
         ineligibility continues unremedied for a period of 90 days.

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

Section 7.02. Other Remedies of Trustee.

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

Section 7.03.  Directions by Certificateholders and
               Duties of Trustee During Event of Default.

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

Section 7.04. Action upon Certain Failures of the
              Master Servicer and upon Event of Default.

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

Section 7.05. Trust Administrator to Act; Appointment of Successor.

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

Section 7.06. Notification to Certificateholders.

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


<PAGE>


ARTICLE VIII

CONCERNING THE TRUSTEE AND THE TRUST ADMINISTRATOR

Section 8.01. Duties of Trustee and Trust Administrator.

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

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

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

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

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

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

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

Section 8.02. Certain Matters Affecting the Trustee and the Trust
              Administrator.

     Except as otherwise provided in Section 8.01:

                   (i) Each of the Trustee and the Trust  Administrator may 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;

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

                 (iii) Neither of the Trustee nor the Trust  Administrator shall
         be personally liable for any action taken, suffered or omitted by it in
         good faith and believed by it to be authorized or within the discretion
         or rights or powers conferred upon it by this Agreement; and

                  (iv)  Each of the  Trustee  and the  Trust  Administrator  may
         execute  any of the trusts or powers  hereunder  or perform  any duties
         hereunder either directly or by or through agents or attorneys.

Section  8.03.  Neither Trustee nor Trust Administrator Required to
                Make Investigation.

     Prior to the  occurrence  of an Event of  Default  hereunder  and after the
curing of all Events of Default which may have occurred, neither the Trustee nor
the Trust  Administrator shall be bound to make any investigation into the facts
or  matters  stated  in  any  resolution,  certificate,  statement,  instrument,
opinion,  report, notice, request,  consent,  order, appraisal,  bond, Mortgage,
Mortgage Note or other paper or document  (provided the same appears  regular on
its face),  unless  requested  in  writing  to do so by holders of  Certificates
evidencing in the aggregate not less than 51% of the Voting Interest represented
by all Certificates;  provided, however, that if the payment within a reasonable
time to the  Trustee  or the  Trust  Administrator  of the  costs,  expenses  or
liabilities  likely to be incurred by it in the making of such investigation is,
in the opinion of the Trustee or the Trust Administrator, not reasonably assured
to the Trustee or the Trust  Administrator by the security afforded to it by the
terms of this  Agreement,  the  Trustee or the Trust  Administrator  may require
reasonable  indemnity  against  such  expense or  liability as a condition to so
proceeding.  The reasonable expense of every such investigation shall be paid by
the Master Servicer or, if paid by the Trustee or the Trust Administrator, shall
be repaid by the Master Servicer upon demand.

Section 8.04. Neither Trustee nor Trust Administrator Liable for
              Certificates or Mortgage Loans.

     The  recitals  contained  herein and in the  Certificates  (other  than the
certificate  of  authentication  on the  Certificates)  shall  be  taken  as the
statements  of the Seller,  and neither the Trustee nor the Trust  Administrator
assumes  responsibility  as to the correctness of the same.  Neither the Trustee
nor the Trust  Administrator makes any representation for the correctness of the
same. Neither the Trustee nor the Trust  Administrator  makes any representation
as to the validity or sufficiency of this Agreement or of the Certificates or of
any Mortgage  Loan or related  document.  Subject to Section  2.04,  neither the
Trustee  nor  the  Trust  Administrator  shall  be  accountable  for  the use or
application by the Seller of any of the  Certificates or of the proceeds of such
Certificates,  or for the use or  application  of any funds  paid to the  Master
Servicer in respect of the Mortgage Loans deposited into the Certificate Account
by the Master  Servicer or, in its capacity as trustee,  for  investment  of any
such amounts.

Section 8.05. Trustee and Trust Administrator May Own Certificates.

     Each of the Trustee,  the Trust Administrator and any agent thereof, in its
individual  or  any  other  capacity,   may  become  the  owner  or  pledgee  of
Certificates  with the same rights it would have if it were not  Trustee,  Trust
Administrator or such agent.

Section 8.06. The Master Servicer to Pay Fees and Expenses.

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

Section 8.07. Eligibility Requirements.

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

Section 8.08. Resignation and Removal.

     Either of the Trustee or the Trust Administrator may at any time resign and
be  discharged  from the  trust  hereby  created  by  giving  written  notice of
resignation to the Master  Servicer,  such  resignation to be effective upon the
appointment of a successor  trustee.  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  or  Trust
Administrator,  as the  case  may  be,  may  petition  any  court  of  competent
jurisdiction for the appointment of a successor trustee or trust administrator.

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

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

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

Section 8.09. Successor.

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

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

Section 8.10. Merger or Consolidation.

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

Section 8.11. Authenticating Agent.

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

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

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

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

Section 8.12. Separate Trustees and Co-Trustees.

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

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

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

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

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

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

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

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

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

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

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

Section 8.13. Appointment of Custodians.

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

Section 8.14. Tax Matters; Compliance with REMIC Provisions.

     (a) Each of the Trustee,  the Trust  Administrator  and the Master Servicer
covenants  and agrees  that it shall  perform its duties  hereunder  in a manner
consistent with the REMIC  Provisions and shall not knowingly take any action or
fail to take any action  that would (i)  affect the  determination  of the Trust
Estate's status as a REMIC;  or (ii) cause the imposition of any federal,  state
or local income, prohibited transaction, contribution or other tax on either the
REMIC or the Trust Estate.  The Master  Servicer,  or, in the case of any action
required by law to be performed directly by the Trust  Administrator,  the Trust
Administrator,  shall (i) prepare or cause to be  prepared,  timely  cause to be
signed  by the  Trustee  and  file or  cause  to be  filed  annual  federal  and
applicable  state and local  income tax  returns  using a  calendar  year as the
taxable  year for the REMIC and the accrual  method of  accounting;  (ii) in the
first such federal tax return, make, or cause to be made, an election satisfying
the  requirements  of the REMIC  Provisions,  on behalf of the Trust Estate,  to
treat the Trust Estate as a REMIC; (iii) prepare,  execute and forward, or cause
to  be  prepared,   executed  and  forwarded,   to  the  Certificateholders  all
information  reports or tax returns  required with respect to the REMIC,  as and
when  required  to be provided to the  Certificateholders,  and to the  Internal
Revenue  Service  and  any  other  relevant  governmental  taxing  authority  in
accordance with the REMIC Provisions and any other applicable federal,  state or
local  laws,  including  without  limitation  information  reports  relating  to
"original  issue  discount"  and "market  discount" as defined in the Code based
upon the issue  prices,  prepayment  assumption  and cash flows  provided by the
Seller to the Trust Administrator and calculated on a monthly basis by using the
issue prices of the Certificates;  (iv) make available information necessary for
the  application  of any tax imposed on  transferors  of residual  interests  to
"disqualified  organizations"  (as  defined in the REMIC  Provisions);  (v) file
Forms SS-4 and 8811 and  respond to  inquiries  by  Certificateholders  or their
nominees concerning  information returns,  reports or tax returns; (vi) maintain
(or cause to be maintained by the Servicers) such records relating to the REMIC,
including but not limited to the income,  expenses,  individual  Mortgage  Loans
(including REO Mortgage Loans,  other assets and  liabilities of the REMIC,  and
the fair market value and adjusted  basis of the REMIC  property  determined  at
such  intervals  as may be required by the Code,  as may be necessary to prepare
the foregoing returns or information reports; (vii) exercise reasonable care not
to allow the creation of any "interests" in the REMIC within the meaning of Code
Section 860D(a)(2) other than the interests  represented by the Class A-1, Class
A-2, Class A-3, Class A-4, Class A-PO,  Class A-WIO and Class A-R  Certificates,
the Class M Certificates  and the Class B-l, Class B-2, Class B-3, Class B-4 and
Class  B-5  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  and the Trust  Administrator  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 tax matters person in accordance with the REMIC Provisions). The Master
Servicer  shall be entitled to be  reimbursed  pursuant to Section  3.02 for any
taxes paid by it pursuant to clause (x) of the preceding sentence, except to the
extent  that  such  taxes are  imposed  as a result  of the bad  faith,  willful
misfeasance or gross negligence of the Master Servicer in the performance of its
obligations  hereunder.  The Trustee's sole duties with respect to the REMIC are
to sign the tax  returns  referred  to in  clause  (i) of the  second  preceding
sentence and to comply with written  directions  from the Master Servicer or the
Trust Administrator.

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

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

Section 8.15. Monthly Advances.

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


<PAGE>


ARTICLE IX

TERMINATION

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

     Subject to Section 9.02, the respective obligations and responsibilities of
the Seller, the Master Servicer, the Trust Administrator and the Trustee created
hereby  (other than the  obligation of the Trust  Administrator  to make certain
payments  after  the  Final  Distribution  Date  to  Certificateholders  and the
obligation of the Master  Servicer to send certain  notices as  hereinafter  set
forth and the tax  reporting  obligations  under  Sections 4.05 and 8.14 hereof)
shall  terminate  upon  the  last  action  required  to be  taken  by the  Trust
Administrator  on the  Final  Distribution  Date  pursuant  to this  Article  IX
following  the earlier of (i) the purchase by the Seller of all  Mortgage  Loans
and all property acquired in respect of any Mortgage Loan remaining in the Trust
Estate at a price equal to the sum of (x) 100% of the unpaid  principal  balance
of each  Mortgage  Loan  (other  than any REO  Mortgage  Loan)  as of the  Final
Distribution  Date,  and (y) the fair  market  value of the  Mortgaged  Property
related to any REO Mortgage Loan (as determined by the Master Servicer as of the
close of business on the third  Business Day next  preceding the date upon which
notice of any such  termination is furnished to  Certificateholders  pursuant to
the third paragraph of this Section 9.01),  plus any accrued and unpaid interest
through the last day of the month  preceding  the month of such  purchase at the
applicable   Mortgage  Interest  Rate  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 11.24. In the case of any purchase by the Seller pursuant to said clause
(i),  the Seller  shall  provide to the Trust  Administrator  the  certification
required by Section 3.04 and the Trust  Administrator  and the Custodian  shall,
promptly  following  payment of the  purchase  price,  release to the Seller the
Owner Mortgage Loan Files pertaining to the Mortgage Loans being purchased.

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

     Upon   presentation   and   surrender  of  the   Certificates,   the  Trust
Administrator shall cause to be distributed to  Certificateholders  on the Final
Distribution  Date in proportion  to their  respective  Percentage  Interests an
amount equal to (i) as to the Subclasses of Class A Certificates, the respective
Class A Subclass  Principal  Balance  together with any related Class A Subclass
Unpaid  Interest  Shortfall  and one month's  interest in an amount equal to the
respective  Class A Subclass  Interest  Accrual  Amount,  (ii) as to the Class M
Certificates,  the Class M Principal  Balance  together with any related Class M
Unpaid Interest  Shortfall and one month's  interest at the Class M Pass-Through
Rate on the Class M Principal  Balance,  (iii) as to the  Subclasses  of Class B
Certificates,  the respective Class B Subclass  Principal  Balance together with
any related Class B Subclass Unpaid Interest  Shortfall and one month's interest
in an amount equal to the respective  Class B Subclass  Interest  Accrual Amount
and (iv) as to the Class A-R Certificate,  the amounts,  if any, which remain on
deposit in the Certificate  Account (other than amounts retained to meet claims)
after  application  pursuant to clauses (i), (ii) and (iii) above and payment to
the Master Servicer of any amounts it is entitled as  reimbursement or otherwise
hereunder.  Notwithstanding the foregoing,  if the price paid pursuant to clause
(i) of the first  paragraph of this Section  9.01,  after  reimbursement  to the
Servicers,  the Master  Servicer  and the Trust  Administrator  of any  Periodic
Advances,  is  insufficient to pay in full the amounts set forth in clauses (i),
(ii) and (iii) of this paragraph, then any shortfall in the amount available for
distribution  to  Certificateholders  shall be  allocated  in  reduction  of the
amounts  otherwise  distributable  on the  Final  Distribution  Date in the same
manner as Realized Losses are allocated pursuant to Sections 4.02(b) and 4.02(g)
hereof. Such distribution on the Final Distribution Date shall be in lieu of the
distribution  otherwise required to be made on such Distribution Date in respect
of each Class of Certificates.

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

Section 9.02. Additional Termination Requirements.

     In the event of a termination  of the Trust Estate upon the exercise by the
Seller of its  purchase  option as provided in Section  9.01,  the Trust  Estate
shall be terminated in accordance  with the following  additional  requirements,
unless the Trust  Administrator has received an Opinion of Counsel to the effect
that  any  other  manner  of  termination   (i)  will  constitute  a  "qualified
liquidation"   of  the  Trust   Estate   within  the  meaning  of  Code  Section
860F(a)(4)(A)  and (ii) will not  subject  the REMIC to federal tax or cause the
Trust Estate to fail to qualify as a REMIC at any time that any Certificates are
outstanding:

                   (i) The notice  given by the Master  Servicer  under  Section
         9.01 shall provide that such notice  constitutes the adoption of a plan
         of complete liquidation of the REMIC as of the date of such notice (or,
         if  earlier,  the date on which  the  first  such  notice  is mailed to
         Certificateholders).  The Master  Servicer shall also specify such date
         in a statement attached to the final tax return of the REMIC; and

                  (ii)  At or  after  the  time  of  adoption  of such a plan of
         complete  liquidation and at or prior to the Final  Distribution  Date,
         the  Trust  Administrator  shall  sell all of the  assets  of the Trust
         Estate  to the  Seller  for cash at the  purchase  price  specified  in
         Section  9.01 and shall  distribute  such  cash  within 90 days of such
         adoption in the manner specified in Section 9.01.
<PAGE>
ARTICLE X

MISCELLANEOUS PROVISIONS

Section 10.01. Amendment.

     (a) This  Agreement or any Custodial  Agreement may be amended from time to
time by the  Seller,  the  Master  Servicer,  the  Trust  Administrator  and the
Trustee,  without the consent of any of the Certificateholders,  (i) to cure any
ambiguity or mistake,  (ii) to correct or supplement  any  provisions  herein or
therein which may be inconsistent  with any other provisions  herein or therein,
(iii) to modify,  eliminate  or add to any of its  provisions  to such extent as
shall be necessary to maintain the  qualification of the Trust Estate as a REMIC
at all times that any  Certificates  are outstanding or to avoid or minimize the
risk of the  imposition  of any  federal  tax on the  Trust  Estate or the REMIC
pursuant to the Code that would be a claim  against the Trust  Estate,  provided
that (a) the Trustee  and the Trust  Administrator  have  received an Opinion of
Counsel to the effect that such action is  necessary  or  desirable  to maintain
such  qualification  or to avoid or minimize the risk of the  imposition  of any
such tax and (b) such action shall not, as evidenced by such Opinion of Counsel,
adversely affect in any material respect the interests of any Certificateholder,
(iv) to change the timing and/or nature of deposits into the Certificate Account
provided  that (a) such change shall not, as evidenced by an Opinion of Counsel,
adversely affect in any material respect the interests of any  Certificateholder
and (b) such change shall not adversely  affect the  then-current  rating of the
Certificates  as evidenced  by a letter from each Rating  Agency to such effect,
(v) to modify,  eliminate or add to the  provisions of Section 5.02 or any other
provisions hereof  restricting  transfer of the Certificates,  provided that the
Master  Servicer  for  purposes  of  Section  5.02  has  determined  in its sole
discretion that any such  modifications to this Agreement will neither adversely
affect the rating on the  Certificates  nor give rise to a risk that  either the
Trust Estate or the REMIC or any of the Certificateholders  will be subject to a
tax  caused by a transfer  to a  non-permitted  transferee  and (vi) to make any
other  provisions  with  respect  to  matters or  questions  arising  under this
Agreement or such Custodial Agreement which shall not be materially inconsistent
with the provisions of this  Agreement,  provided that such action shall not, as
evidenced by an Opinion of Counsel, adversely affect in any material respect the
interests of any Certificateholder.

     This Agreement or any Custodial  Agreement may also be amended from time to
time by the Seller, the Master Servicer, the Trust Administrator and the Trustee
with the consent of the Holders of Certificates  evidencing in the aggregate not
less than 66-2/3% of the aggregate Voting Interests of each Class or Subclass 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 or  Subclass;  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 or Subclass in a manner  other than as  described  in
clause (i) hereof without the consent of Holders of  Certificates  of such Class
or  Subclass  evidencing,  as  to  such  Class  or  Subclass,  Voting  Interests
aggregating  not less than 66-2/3% or (iii) reduce the  aforesaid  percentage of
Certificates  of any Class or  Subclass  the  Holders of which are  required  to
consent  to any such  amendment,  without  the  consent  of the  Holders  of all
Certificates of such Class or Subclass then outstanding.

     Notwithstanding  any  contrary  provision  of this  Agreement,  neither the
Trustee  nor the Trust  Administrator  shall  consent to any  amendment  to this
Agreement  unless it shall  have  first  received  an  Opinion of Counsel to the
effect that such  amendment will not subject the REMIC to tax or cause the Trust
Estate  to fail to  qualify  as a REMIC at any time  that any  Certificates  are
outstanding.

     Promptly  after the  execution of any  amendment  requiring  the consent of
Certificateholders,  the Trust Administrator shall furnish written  notification
of the substance of such amendment to each Certificateholder.

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

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

                  (a)      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

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

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

Section 10.02. Recordation of Agreement.

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

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

Section 10.03. Limitation on Rights of Certificateholders.

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

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

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

Section 10.04. Governing Law; Jurisdiction.

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

Section 10.05. Notices.

     All demands,  notices and communications  hereunder shall be in writing and
shall be deemed to have been duly given if personally  delivered at or mailed by
certified or registered  mail,  return receipt  requested (i) in the case of the
Seller,  to  Norwest  Asset  Securities  Corporation,   7485  New  Horizon  Way,
Frederick,  Maryland 21703,  Attention:  Chief Executive Officer,  or such other
address  as may  hereafter  be  furnished  to the  Master  Servicer,  the  Trust
Administrator and the Trustee in writing by the Seller,  (ii) in the case of the
Master  Servicer,  to Norwest Bank  Minnesota,  National  Association,  7485 New
Horizon Way, Frederick,  Maryland 21703, Attention: Vice President or such other
address as may  hereafter  be furnished to the Seller and the Trustee in writing
by the Master Servicer, (iii) in the case of the Trustee, to the Corporate Trust
Office and (iv) in the case of the Trust  Administrator,  to the Corporate Trust
Office,  or such other  address as may  hereafter be furnished to the Seller and
the Master  Servicer  in writing by the Trustee or the Trust  Administrator,  in
each  case  Attention:  Corporate  Trust  Department.  Any  notice  required  or
permitted  to be mailed  to a  Certificateholder  shall be given by first  class
mail, postage prepaid, at the address of such Holder as shown in the Certificate
Register.  Any notice mailed or transmitted  within the time  prescribed in this
Agreement shall be conclusively presumed to have been duly given, whether or not
the addressee receives such notice,  provided,  however, that any demand, notice
or  communication  to or  upon  the  Seller,  the  Master  Servicer,  the  Trust
Administrator or the Trustee shall not be effective until received.

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

Section 10.06. Severability of Provisions.

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

Section 10.07. Special Notices to Rating Agencies.

     (a) The Trust  Administrator shall give prompt notice to each Rating Agency
of the occurrence of any of the following events of which it has notice:

                  (i)  any  amendment  to this  Agreement  pursuant  to  Section
         10.01(a);

                  (ii) any sale or transfer of the Class B Certificates pursuant
         to Section 5.02 to an affiliate of the Seller;

                  (iii) any assignment by the Master  Servicer of its rights and
         delegation of its duties pursuant to Section 6.06;

                  (iv)  any  resignation  of the  Master  Servicer  pursuant  to
         Section 6.04;

                  (v) the  occurrence of any of the Events of Default  described
         in Section 7.01;

                  (vi) any notice of  termination  given to the Master  Servicer
         pursuant to Section 7.01;

                  (vii) the  appointment of any successor to the Master Servicer
         pursuant to Section 7.05; or

                  (viii) the making of a final payment pursuant to Section 9.01.

     (b) The Master  Servicer  shall give prompt notice to each Rating Agency of
the occurrence of any of the following events:

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

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

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

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

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

                  (i) reports prepared pursuant to Section 3.05; and

                  (ii) statements prepared pursuant to Section 4.04.

Section 10.08. Covenant of Seller.

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

Section 10.09. Recharacterization.

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


<PAGE>


ARTICLE XI

TERMS FOR CERTIFICATES

Section 11.01. Class A Fixed Pass-Through Rate.

     The Class A Fixed Pass-Through Rate is 6.750% per annum.

Section 11.02. Cut-Off Date.

     The Cut-Off Date for the Certificates is September 1, 1997.

Section 11.03. Cut-Off Date Aggregate Principal Balance.

     The Cut-Off Date Aggregate Principal Balance is $170,178,363.24.

Section 11.04. Original Class A Percentage.

     The Original Class A Percentage is 97.24344548%.

Section 11.05. Original Class A Subclass Principal Balances.

     As to the  following  Subclasses  of  Class  A  Certificates,  the  Class A
Subclass Principal Balance of such Subclass as of the Cut-Off Date, as follows:

                                              Original Class A
        Class A Subclass                 Subclass Principal Balance
        ----------------                 --------------------------
          Class A-1                            $  60,000,000.00
          Class A-2                            $  73,760,691.00
          Class A-3                            $  10,149,209.00
          Class A-4                            $  21,200,000.00
          Class A-PO                           $     387,999.29
          Class A-R                            $         100.00

Section 11.06. Original Class A Non-PO Principal Balance.

     The Original Class A Non-PO Principal Balance is $165,110,000.00.

Section 11.07. Original Subordinated Percentage.

     The Original Subordinated Percentage is 2.75655452%.

Section 11.08. Original Class M Percentage.

     The Original Class M Percentage is 1.00241260%.

Section 11.09. Original Class M Principal Balance.

     The Original Class M Principal Balance is $1,702,000.00.

Section 11.10 Original Class M Fractional Interest.

     The Original Class M Fractional Interest is 1.75414191%.

Section 11.11 Original Class B-1 Percentage.

     The Original Class B-1 Percentage is 0.65139150%.

Section 11.12. Original Class B-2 Percentage.

     The Original Class B-2 Percentage is 0.40108283%.

Section 11.13. Original Class B-3 Percentage.

     The Original Class B-3 Percentage is 0.30037040%.

Section 11.14. Original Class B-4 Percentage.

     The Original Class B-4 Percentage is 0.25089763%.

Section 11.15. Original Class B-5 Percentage.

     The Original Class B-5 Percentage is 0.15039955%.

Section 11.16. Original Class B Principal Balance.

     The Original Class B Principal Balance is $2,978,363.95.

Section 11.17. Original Class B Subclass Principal Balances.

     As to any Class B Certificate,  the Class B Subclass  Principal  Balance of
such Subclass as of the Cut-Off Date, is as follows:

                                                  Original Class B
          Class B Subclass                   Subclass Principal Balance
          ----------------                   --------------------------
            Class B-1                            $  1,106,000.00
            Class B-2                            $    681,000.00
            Class B-3                            $    510,000.00
            Class B-4                            $    426,000.00
            Class B-5                            $    255,363.95

Section 11.18. Original Class B-1 Fractional Interest.

     The Original Class B-1 Fractional Interest is 1.10275041%.

Section 11.19. Original Class B-2 Fractional Interest.

     The Original Class B-2 Fractional Interest is 0.70166758%.

Section 11.20. Original Class B-3 Fractional Interest.

     The Original Class B-3 Fractional Interest is 0.40129718%.

Section 11.21. Original Class B-4 Fractional Interest.

     The Original Class B-4 Fractional Interest is 0.15039955%.

Section 11.22. Closing Date.

     The Closing Date is September 29, 1997.

Section 11.23. 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 $17,017,836.32 (10% of the Cut-Off
Date Aggregate Principal Balance) at the time of any such purchase.

Section 11.24. Wire Transfer Eligibility.

     With respect to the Class A  Certificates  (other than the Class A-R, Class
A-PO  and  Class  A-WIO   Certificates),   Class  M  Certificates  and  Class  B
Certificates  (other  the  Class B-4 and Class  B-5  Certificates)  the  minimum
Denomination  eligible for wire transfer on each  Distribution Date is $500,000.
With respect to the Class A-WIO Certificates,  the minimum Denomination eligible
for wire transfer on each  Distribution  Date is 25%  Percentage  Interest.  The
Class A-PO, Class A-R, Class B-4 and Class B-5 Certificates are not eligible for
wire transfer.

Section 11.25. Single Certificate.

     A Single Certificate for each Subclass of Class A Certificates  (other than
the Class A-4, Class A-WIO and Class A-R Certificates), the Class M Certificates
and the Class B Certificates (other than the Class B-3, Class B-4, and Class B-5
Certificates)  represents a $100,000 Denomination.  A Single Certificate for the
Class A-4 Certificates  represents a $25,000 Denomination.  A Single Certificate
for the Class A-WIO  Certificates  represents a  Denomination  of 25% Percentage
Interest.  A Single Certificate for the Class A-R Certificate  represents a $100
Denomination.  A Single Certificate for the Class B-3 Certificates  represents a
$250,000  Denomination.  A Single  Certificate  for the  Class B-4 and Class B-5
Certificates  represents a  Denomination  equal to the Original Class B Subclass
Principal Balance thereof.

Section 11.26. Servicing Fee Rate.

     The rate used to calculate the Servicing Fee is equal to 0.250% per annum.

Section 11.27. Master Servicing Fee Rate.

     The rate used to calculate the Master  Servicing Fee for each Mortgage Loan
is 0.016% per annum.



<PAGE>


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

                                   NORWEST ASSET SECURITIES CORPORATION
                                    as Seller

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

                                   NORWEST BANK MINNESOTA, NATIONAL
                                   ASSOCIATION
                                    as Master Servicer

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


                                   FIRST UNION NATIONAL BANK
                                    as Trust Administrator

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

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


                                   UNITED STATES TRUST COMPANY OF NEW YORK
                                    as Trustee

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

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


<PAGE>


STATE OF NEW YORK                   )
                                        ss.:
COUNTY OF NEW YORK                  )

     On this 29th day of September,  1997, before me, a notary public in and for
the State of New York,  personally Patrick Greene,  known to me who, being by me
duly sworn, did depose and say that he resides at Frederick,  Maryland;  that he
is an  Assistant  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 NEW YORK                   )
                                        ss.:
COUNTY OF NEW YORK                  )

     On this 29th day of September,  1997, before me, a notary public in and for
the State of New York,  personally  appeared  Edward M. Frere,  Jr., 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  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 NORTH CAROLINA             )
                                       ss.:
COUNTY OF                           )

     On this 29th day of September,  1997, 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 29th day of September,  1997, 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>


STATE OF NEW YORK               )
                                    ss.:
COUNTY OF                       )

     On this 29th day of September,  1997, before me, a notary public in and for
the State of New York, personally appeared -------------------, known to me who,
being  by  me  duly   sworn,   did   depose   and  say  that  s/he   resides  at
- ----------------, New York; that s/he is a -------------------- of United States
Trust Company of New York, a  ------------------------,  one of the parties that
executed the foregoing instrument;  and that s/he signed her/his name thereto by
order of the Board of Directors of said corporation.


- -------------------------
Notary Public


[NOTARIAL SEAL]


<PAGE>


STATE OF NEW YORK               )
                                    ss.:
COUNTY OF                       )

     On this 29th day of September,  1997, before me, a notary public in and for
the State of New York, personally appeared -------------------, known to me who,
being  by  me  duly   sworn,   did   depose   and  say  that  s/he   resides  at
- ----------------, New York; that s/he is a -------------------- of United States
Trust Company of New York, a  ------------------------,  one of the parties that
executed the foregoing instrument;  and that s/he signed her/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 1997-15
                 Applicable Unscheduled Principal Receipt Period

                                       Full Unscheduled      Partial Unscheduled
Servicer                               Principal Receipts    Principal Receipts

Norwest Mortgage, Inc. (Exhibit F-1)   Prior Month           Prior Month

Norwest Mortgage, Inc. (Exhibit F-2)   Mid-Month             Mid-Month

FT Mortgage Companies                  Mid-Month             Prior Month

Cimarron Mortgage Corp.                Prior Month           Prior Month

National City Mortgage Company         Prior Month           Prior Month

First Union Mortgage Corporation       Prior Month           Prior Month

Suntrust Mortgage, Inc.                Prior Month           Prior Month

Citicorp Mortgage, Inc.                Prior Month           Prior Month

First Bank National Association        Prior Month           Prior Month

The Huntington Mortgage Company        Prior Month           Prior Month


<PAGE>


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

      [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
     OF THE DEPOSITORY TRUST COMPANY TO THE TRUST ADMINISTRATOR 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 1997-15 CLASS A-1

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

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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997


Percentage Interest evidenced         Denomination: $
by this Certificate:  %


<PAGE>


     THIS CERTIFIES THAT  --------------------------- is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-1 Certificates required to be distributed to
Holders  of  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 Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-1 Certificates  applicable to each  Distribution Date will be 6.750% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-1 Certificates, as described in the Agreement.

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

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

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

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


<PAGE>


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


Dated:

                                                 First Union National Bank,
                                                   Trust Administrator

                                                 By----------------------------
                                                   Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ------------------------
   Authorized Officer


<PAGE>


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

      [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
     OF THE DEPOSITORY TRUST COMPANY TO THE TRUST ADMINISTRATOR 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 1997-15 CLASS A-2

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

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

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

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

Certificate No.                      Cut-Off Date:   September 1, 1997

CUSIP No.:                           First Distribution Date:  October 27, 1997

Percentage Interest evidenced        Denomination:  $
by this Certificate: %


<PAGE>


     THIS CERTIFIES THAT  --------------------------- is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-2 Certificates required to be distributed to
Holders  of  Class  A-2  Certificates  on such  Distribution  Date,  subject  to
adjustment in certain  events as specified in the  Agreement.  Distributions  in
reduction of the principal balance of certain Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-2 Certificates  applicable to each  Distribution Date will be 6.750% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-2 Certificates, as described in the Agreement.

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

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

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ------------------------
   Authorized Officer


<PAGE>


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

      [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
     OF THE DEPOSITORY TRUST COMPANY TO THE TRUST ADMINISTRATOR 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 1997-15 CLASS A-3

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

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

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

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

Certificate No.                      Cut-Off Date:   September 1, 1997

CUSIP No.:                           First Distribution Date:  October 27, 1997

Percentage Interest evidenced        Denomination:  $
by this Certificate: %


<PAGE>


     THIS CERTIFIES THAT  --------------------------- is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-3 Certificates required to be distributed to
Holders  of  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 Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-3 Certificates  applicable to each  Distribution Date will be 6.750% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-3 Certificates, as described in the Agreement.

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

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

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ------------------------
   Authorized Officer


<PAGE>


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

      [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
     OF THE DEPOSITORY TRUST COMPANY TO THE TRUST ADMINISTRATOR 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 1997-15 CLASS A-4

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

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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997

Percentage Interest evidenced         Denomination:  $
by this Certificate: %


<PAGE>


     THIS CERTIFIES THAT  --------------------------- is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders  of  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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-4 Certificates required to be distributed to
Holders  of  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 Subclasses of Class A Certificates
may not commence on the first  Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-4 Certificates  applicable to each  Distribution Date will be 6.750% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-4 Certificates, as described in the Agreement.

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

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

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

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


<PAGE>


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


Dated:

                                               First Union National Bank,
                                                 Trust Administrator

                                               By----------------------------
                                                 Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator

By ------------------------
   Authorized Officer


<PAGE>


                                  EXHIBIT A-WIO
                    [FORM OF FACE OF CLASS A-WIO 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 1997-15 CLASS A-WIO

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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997

Percentage Interest evidenced
by this Certificate:      %


<PAGE>


     THIS CERTIFIES THAT  --------------------------- is the registered owner of
the Percentage  Interest evidenced by this Certificate in monthly  distributions
to the  Holders of Class  A-WIO  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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-WIO Certificates  required to be distributed
to Holders of Class A-WIO  Certificates on such  Distribution  Date,  subject to
adjustment  in certain  events as  specified in the  Agreement.  The Class A-WIO
Certificates  will not be entitled  to  distributions  in respect of  principal.
Interest  will  accrue on the Class A-WIO  Certificates  during each month in an
amount  equal to the  product  of (A)  1/12th of (i) the  Weighted  Average  Net
Mortgage  Interest Rate of the Premium  Mortgage  Loans on the first day of such
month  minus  (ii)  6.750%  and (B) the Class  A-WIO  Notional  Amount as of the
related  Distribution  Date.  The  amount  of  interest  which  accrues  on this
Certificate  in any month  will be  subject  to  reduction  with  respect to any
Non-Supported  Interest  Shortfall and the interest  portion of certain Realized
Losses allocated to the Class A-WIO Certificates, as described in the Agreement.

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

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

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

     This  Certificate  is issued on September  29,  1997,  at an issue price of
2.22325% of the initial Class A-WIO Notional Amount, including accrued interest,
and a stated  redemption  price at maturity equal to all interest  distributions
hereon,  and is issued with original issue  discount  ("OID") for federal income
tax  purposes.  Assuming  (a) that  this  Certificate  pays in  accordance  with
projected  cash  flows  reflecting  the  Prepayment  Assumption  of 250% SPA (as
defined in the Prospectus  Supplement  dated  September 22, 1997 with respect to
the  offering of the Class A-1,  Class A-2,  Class A-3,  Class A-4,  Class A-PO,
Class  A-R,  Class M, Class B-1 and Class B-2  Certificates)  used to price this
Certificate and (b) that the Pass-Through  Rate on this  Certificate  changes in
accordance with the Prepayment Assumption: (i) the amount of OID as a percentage
of the initial Class A-WIO Notional Amount is  approximately  1.09370775%;  (ii)
the  annual  yield to  maturity  of this  Certificate,  compounded  monthly,  is
approximately  12.49%;  and (iii) the amount of OID allocable to the short first
accrual  period  (September 29, 1997 to October 25, 1997) as a percentage of the
initial Class A-WIO  Notional  Amount,  calculated  using the exact  method,  is
approximately 0.02003750%.

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator
By ------------------------
   Authorized Officer


<PAGE>


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


                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1997-15, CLASS A-PO

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

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

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

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

Certificate No.                      Cut-Off Date:   September 1, 1997

CUSIP No.:                           First Distribution Date:  October 27, 1997

Percentage Interest evidenced        Denomination:  $
by this Certificate: %


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master  servicer (the "Master  Servicer"),  United States Trust
Company of New York, as trustee (the "Trustee"),  and First Union National Bank,
as trust administrator (the "Trust Administrator"),  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-PO
Distribution  Amount  required  to be  distributed  to  Holders  of  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.  Notwithstanding the
above,  the final  distribution  in reduction of the  principal  balance of this
Certificate  will be made after due notice of the pendency of such  distribution
and only upon  presentation  and surrender of this  Certificate at the office or
agency  specified by the Trust  Administrator  for that purpose in the notice of
final distribution.

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

     This  Certificate  is issued on September  29,  1997,  at an issue price of
69.25000%  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 250% SPA (as
defined in the Prospectus  Supplement  dated  September 22, 1997 with respect to
the  offering of the Class A-1,  Class A-2,  Class A-3,  Class A-4,  Class A-PO,
Class  A-R,  Class M, Class B-1 and Class B-2  Certificates)  used to price this
Certificate:  (i) the amount of OID as a  percentage  of the  initial  principal
balance of this Certificate is approximately 30.75000000%; (ii) the annual yield
to maturity of this Certificate, compounded monthly, is approximately 8.37%; and
(iii) the amount of OID allocable to the short first accrual  period  (September
29, 1997 to October 25, 1997) as a percentage of the initial  principal  balance
of this  Certificate,  calculated  using  the  exact  method,  is  approximately
0.41823716%.

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

     Unless this Certificate has been  countersigned by an authorized officer of
the Trust  Administrator  by manual  signature,  this  Certificate  shall not be
entitled to any benefit under the Agreement or be valid for any purpose.
<PAGE>
     IN WITNESS WHEREOF,  the Trust Administrator has caused this Certificate to
be duly executed as of the date set forth below.


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


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

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

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

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


<PAGE>


                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-15, CLASS A-R


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


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

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

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

Certificate No.                      Cut-Off Date:   September 1, 1997

CUSIP No.:                           First Distribution Date:  October 27, 1997

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


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest  evidenced by this Certificate and the Class A Subclass
Distribution Amount for the Class A-R Certificate  required to be distributed to
the Holders 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 Subclasses of Class A Certificates
will not commence on the first Distribution Date specified above.  Distributions
of principal will be allocated  among the Subclasses of Class A Certificates  in
accordance with the provisions of the Agreement.  The  pass-through  rate on the
Class A-R Certificate  applicable to each  Distribution  Date will be 6.750% per
annum.  The amount of interest  which accrues on this  Certificate  in any month
will  be  subject  to  reduction  with  respect  to any  Non-Supported  Interest
Shortfall and the interest  portion of certain  Realized Losses allocated to the
Class A-R Certificate, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate  Register.  Notwithstanding the
above, the final  distribution on this Certificate will be made after due notice
of the pendency of such distribution and only upon presentation and surrender of
this  Certificate at the office or agency  specified by the Trust  Administrator
for that purpose in the notice of final distribution.

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

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

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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator


                                                By----------------------------
                                                  Authorized Officer

Countersigned:

First Union National Bank,
  Trust Administrator

By ------------------------
   Authorized Officer


<PAGE>


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

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AND THE CLASS M 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 1997-15, CLASS B-1

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

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

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

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

Certificate No.                      Cut-Off Date:   September 1, 1997

CUSIP No.:                           First Distribution Date:  October 27, 1997

Percentage Interest evidenced        Denomination:  $
by this Certificate: %


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates  and the Class M Certificates as specified in
the Agreement,  any Class B-1 Distribution  Amount required to be distributed to
Holders  of  Class  B-1  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-1 Certificates  applicable to each Distribution Date will be
6.750% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-1 Certificates, as described in the Agreement.

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

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

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

     This  Certificate  is issued on September 29, 1997,  and based on its issue
price of 97.63438%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal  balance (plus four days of interest at
the  Pass-Through  Rate hereon),  is issued with original issue discount ("OID")
for  federal  income  tax  purposes.  Assuming  that  this  Certificate  pays in
accordance  with  projected cash flows  reflecting the Prepayment  Assumption of
250% SPA (as defined in the Prospectus  Supplement dated September 22, 1997 with
respect to the offering of the Class A-1, Class A-2, Class A-3, Class A-4, Class
A-PO,  Class A-R, Class M, Class B-1 and Class B-2  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this Certificate is approximately 2.44062500%;  (ii) the annual yield
to maturity of this Certificate, compounded monthly, is approximately 7.18%; and
(iii) the amount of OID allocable to the short first accrual  period  (September
29, 1997 to October 25, 1997) as a percentage of the initial  principal  balance
of this  Certificate,  calculated  using  the  exact  method,  is  approximately
0.01878305%.

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


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

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE  CLASS M  CERTIFICATES  AND THE  CLASS  B-1  CERTIFICATES  AS
DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

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


<PAGE>


                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-15, CLASS B-2

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

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

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

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

Certificate No.                      Cut-Off Date:   September 1, 1997

CUSIP No.:                           First Distribution Date:  October 27, 1997

Percentage Interest evidenced        Denomination:  $
by this Certificate: %


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
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  Class  B-2  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-2 Certificates  applicable to each Distribution Date will be
6.750% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-2 Certificates, as described in the Agreement.

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

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

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

     This  Certificate  is issued on September 29, 1997,  and based on its issue
price of 96.24375%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal  balance (plus four days of interest at
the  Pass-Through  Rate hereon),  is issued with original issue discount ("OID")
for  federal  income  tax  purposes.  Assuming  that  this  Certificate  pays in
accordance  with  projected cash flows  reflecting the Prepayment  Assumption of
250% SPA (as defined in the Prospectus  Supplement dated September 22, 1997 with
respect to the offering of the Class A-1, Class A-2, Class A-3, Class A-4, Class
A-PO,  Class A-R, Class M, Class B-1 and Class B-2  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this Certificate is approximately 3.83125000%;  (ii) the annual yield
to maturity of this Certificate, compounded monthly, is approximately 7.44%; and
(iii) the amount of OID allocable to the short first accrual  period  (September
29, 1997 to October 25, 1997) as a percentage of the initial  principal  balance
of this  Certificate,  calculated  using  the  exact  method,  is  approximately
0.02918062%.

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By
                                                  ----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


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

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES, THE CLASS M CERTIFICATES, THE CLASS B-1 CERTIFICATES AND THE CLASS
B-2 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 1997-15, CLASS B-3

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

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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997

Percentage Interest evidenced         Denomination:  $
by this Certificate: %


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
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  Class  B-3  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-3 Certificates  applicable to each Distribution Date will be
6.750% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-3 Certificates, as described in the Agreement.

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

     No transfer of a Class B-3 Certificate will be made unless such transfer is
exempt from the  registration  requirements  of the  Securities  Act of 1933, as
amended,  and any applicable state securities laws or is made in accordance with
said Act and laws.  In the event that such a  transfer  is desired to be made by
the Holder hereof,  (i) the transferee will be required to execute an investment
letter in the form described in the Agreement and (ii) if such transfer is to be
made within  three  years from the later of (a) the date of initial  issuance of
the  Certificates  or (b) the last  date on which the  Seller  or any  affiliate
thereof was a Holder of the Certificates proposed to be transferred,  and unless
such transfer is made in reliance on Rule 144A of the Securities Act of 1933, as
amended, the Trust Administrator or the Seller may require the Holder to deliver
an opinion of counsel  acceptable to and in form and substance  satisfactory  to
the Trust  Administrator and the Seller that such transfer is exempt (describing
the applicable  exemption and the basis therefor) from or is being made pursuant
to the registration  requirements of the Securities Act of 1933, as amended, and
of any  applicable  statute of any state.  The Holder hereof  desiring to effect
such transfer shall, and does hereby agree to, indemnify the Trustee,  the Trust
Administrator,  the Seller, the Master Servicer,  and any Paying Agent acting on
behalf of the Trust  Administrator  against any liability that may result if the
transfer  is not so exempt or is not made in  accordance  with such  Federal and
state laws. In connection with any such transfer,  the Trust  Administrator will
also  require  (i) a  representation  letter,  in the form as  described  in the
Agreement,  stating  either  (a)  that the  transferee  is not a Plan and is not
acting on behalf of a Plan or using the assets of a Plan to effect such purchase
or (b) subject to certain conditions described in the Agreement, that the source
of funds used to purchase  this  Certificate  is an "insurance  company  general
account,"  or (ii) if such  transferee  is a Plan,  or is acting on behalf of or
using the assets of a Plan, (a) an opinion of counsel  acceptable to and in form
and  substance  satisfactory  to the Trust  Administrator  and the  Seller  with
respect to certain matters and (b) such other documentation as the Seller or the
Master Servicer may require, as described in the Agreement.

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

     This  Certificate  is issued on September 29, 1997,  and based on its issue
price of 90.32188%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal  balance (plus four days of interest at
the  Pass-Through  Rate hereon),  is issued with original issue discount ("OID")
for  federal  income  tax  purposes.  Assuming  that  this  Certificate  pays in
accordance  with  projected cash flows  reflecting the Prepayment  Assumption of
250% SPA (as defined in the Prospectus  Supplement dated September 22, 1997 with
respect to the offering of the Class A-1, Class A-2, Class A-3, Class A-4, Class
A-PO,  Class A-R, Class M, Class B-1 and Class B-2  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this Certificate is approximately 9.75312500%;  (ii) the annual yield
to maturity of this Certificate, compounded monthly, is approximately 8.58%; and
(iii) the amount of OID allocable to the short first accrual  period  (September
29, 1997 to October 25, 1997) as a percentage of the initial  principal  balance
of this  Certificate,  calculated  using  the  exact  method,  is  approximately
0.07175557%.

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


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

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS M CERTIFICATES,  THE CLASS B-1 CERTIFICATES,  THE CLASS
B-2  CERTIFICATES AND THE CLASS B-3 CERTIFICATES AS DESCRIBED IN THE POOLING AND
SERVICING AGREEMENT REFERRED TO HEREIN.

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

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


<PAGE>


                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-15, CLASS B-4

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

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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997

Percentage Interest evidenced         Denomination:  $
by this Certificate: %


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
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  Class  B-4  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-4 Certificates  applicable to each Distribution Date will be
6.750% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class 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.  Notwithstanding the
above,  the final  distribution  in reduction of the  principal  balance of this
Certificate  will be made after due notice of the pendency of such  distribution
and only upon  presentation  and surrender of this  Certificate at the office or
agency  specified by the Trust  Administrator  for that purpose in the notice of
final distribution.

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

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

     This  Certificate  is issued on September 29, 1997,  and based on its issue
price of 77.83750%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal  balance (plus four days of interest at
the  Pass-Through  Rate hereon),  is issued with original issue discount ("OID")
for  federal  income  tax  purposes.  Assuming  that  this  Certificate  pays in
accordance  with  projected cash flows  reflecting the Prepayment  Assumption of
250% SPA (as defined in the Prospectus  Supplement dated September 22, 1997 with
respect to the offering of the Class A-1, Class A-2, Class A-3, Class A-4, Class
A-PO,  Class A-R, Class M, Class B-1 and Class B-2  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this Certificate is approximately 22.23750000%; (ii) the annual yield
to maturity of this Certificate,  compounded monthly,  is approximately  11.38%;
and (iii)  the  amount  of OID  allocable  to the  short  first  accrual  period
(September  29,  1997 to  October  25,  1997)  as a  percentage  of the  initial
principal  balance of this  Certificate,  calculated using the exact method,  is
approximately 0.15181762%.

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

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


<PAGE>


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


Dated:

                                                First Union National Bank,
                                                  Trust Administrator

                                                By----------------------------
                                                  Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


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

THIS   CERTIFICATE  IS   SUBORDINATED  IN  RIGHT  OF  PAYMENT  TO  THE  CLASS  A
CERTIFICATES,  THE CLASS M CERTIFICATES,  THE CLASS B-1 CERTIFICATES,  THE CLASS
B-2  CERTIFICATES,  THE CLASS B-3 CERTIFICATES AND THE CLASS B-4 CERTIFICATES AS
DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

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

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


<PAGE>


                        MORTGAGE PASS-THROUGH CERTIFICATE
                            SERIES 1997-15, CLASS B-5

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

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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997

Percentage Interest evidenced         Denomination:  $
by this Certificate: %


<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,  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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates,  the Class M Certificates  and each Subclass
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  Class  B-5  Certificates  on such  Distribution  Date,  subject  to
adjustment,  in certain events, as specified in the Agreement.  The pass-through
rate on the Class B-5 Certificates  applicable to each Distribution Date will be
6.750% per annum.  The amount of interest  which accrues on this  Certificate in
any month  will be  subject  to  reduction  with  respect  to any  Non-Supported
Interest Shortfall and the interest portion of certain Realized Losses allocated
to the Class B-5 Certificates, as described in the Agreement.

     Distributions  on this  Certificate  will be made on behalf of the  Trustee
either by the  Master  Servicer  or by a Paying  Agent  appointed  by the Master
Servicer by check mailed to the address of the Person entitled thereto,  as such
name and address shall appear on the Certificate  Register.  Notwithstanding the
above,  the final  distribution  in reduction of the  principal  balance of this
Certificate  will be made after due notice of the pendency of such  distribution
and only upon  presentation  and surrender of this  Certificate at the office or
agency  specified by the Trust  Administrator  for that purpose in the notice of
final distribution.

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

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

     This  Certificate  is issued on September 29, 1997,  and based on its issue
price of 39.02500%, including accrued interest, and a stated redemption price at
maturity equal to its initial  principal  balance (plus four days of interest at
the  Pass-Through  Rate hereon),  is issued with original issue discount ("OID")
for  federal  income  tax  purposes.  Assuming  that  this  Certificate  pays in
accordance  with  projected cash flows  reflecting the Prepayment  Assumption of
250% SPA (as defined in the Prospectus  Supplement dated September 22, 1997 with
respect to the offering of the Class A-1, Class A-2, Class A-3, Class A-4, Class
A-PO,  Class A-R, Class M, Class B-1 and Class B-2  Certificates)  used to price
this Certificate: (i) the amount of OID as a percentage of the initial principal
balance of this Certificate is approximately 61.05000000%; (ii) the annual yield
to maturity of this Certificate,  compounded monthly,  is approximately  27.77%;
and (iii)  the  amount  of OID  allocable  to the  short  first  accrual  period
(September  29,  1997 to  October  25,  1997)  as a  percentage  of the  initial
principal  balance of this  Certificate,  calculated using the exact method,  is
approximately 0.29396657%.

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

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


<PAGE>


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


Dated:

                                               First Union National Bank,
                                                 Trust Administrator

                                               By----------------------------
                                                 Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


                                    EXHIBIT C

                      [Form of Face of Class M Certificate]

THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO THE CLASS A CERTIFICATES
AS DESCRIBED IN THE POOLING AND SERVICING AGREEMENT REFERRED TO HEREIN.

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


<PAGE>


                        MORTGAGE PASS-THROUGH CERTIFICATE
                             SERIES 1997-15, CLASS M


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


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

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

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

Certificate No.                       Cut-Off Date:   September 1, 1997

CUSIP No.:                            First Distribution Date:  October 27, 1997

Percentage Interest evidenced         Denomination:  $
by this Certificate: %


<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 M 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,
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 September  29, 1997
(the   "Agreement")   among  the  Seller,   Norwest  Bank  Minnesota,   National
Association,  as master servicer (the "Master  Servicer"),  First Union National
Bank, as trust administrator (the "Trust Administrator") and United States Trust
Company of New York,  as trustee  (the  "Trustee"),  a summary of certain of the
pertinent  provisions  of which is set  forth  hereinafter.  To the  extent  not
defined herein,  the capitalized terms used herein have the meanings ascribed to
such terms in the Agreement.  This Certificate is issued under and is subject to
the terms,  provisions and conditions of the Agreement,  to which  Agreement the
Holder of this  Certificate  by virtue of the  acceptance  hereof assents and by
which such Holder is bound.

     Pursuant to the terms of the Agreement,  a distribution will be made on the
25th day of each month or, if such 25th day is not a Business  Day, the Business
Day immediately  following (the  "Distribution  Date"),  commencing on the first
Distribution  Date specified above, to the Person in whose name this Certificate
is  registered  at the close of business on the last  Business  Day of the month
preceding the month of such  distribution,  in an amount equal to the product of
the Percentage  Interest evidenced by this Certificate and, subject to the prior
rights of the Class A Certificates  as specified in the  Agreement,  any Class M
Distribution   Amount   required  to  be  distributed  to  Holders  of  Class  M
Certificates  on such  Distribution  Date,  subject  to  adjustment,  in certain
events, as specified in the Agreement.  The Class M Pass-Through Rate applicable
to each Distribution Date will be 6.750% per annum. The amount of interest which
accrues on this  Certificate  in any month will be  subject  to  reduction  with
respect to any  Non-Supported  Interest  Shortfall  and the interest  portion of
certain Realized Losses  allocated to the Class M Certificates,  as described in
the Agreement.

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

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

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

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

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


<PAGE>


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


Dated:

                                               First Union National Bank,
                                                 Trust Administrator

                                               By----------------------------
                                                 Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator


By ------------------------
   Authorized Officer


<PAGE>


                                    EXHIBIT D


                [Form of Reverse of Series 1997-15 Certificates]


                      NORWEST ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1997-15

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

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

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

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

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

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

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

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


<PAGE>


                                   ASSIGNMENT

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

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

     I (We) further direct the Certificate  Registrar to issue a new Certificate
of a like  Denomination  or  Percentage  Interest and Class or Subclass,  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 E

                               CUSTODIAL AGREEMENT

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


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

     WHEREAS,  the Seller,  the Master  Servicer,  the Trust  Administrator  and
United States Trust Company of New York, as trustee, have entered into a Pooling
and Servicing  Agreement dated as of September 29, 1997 relating to the issuance
of Mortgage Pass-Through Certificates,  Series 1997-15 (as in effect on the date
of this  Agreement,  the  "Original  Pooling and  Servicing  Agreement",  and as
amended  and  supplemented  from  time  to  time,  the  "Pooling  and  Servicing
Agreement"); and

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

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

                                    ARTICLE 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 Trust  Administrator  for these
purposes,  acknowledges  receipt  of the  Mortgage  Notes,  the  Mortgages,  the
assignments and other documents relating to the Mortgage Loans identified on the
schedule  attached hereto and declares that it holds and will hold such Mortgage
Notes,  Mortgages,  assignments  and other  documents and any similar  documents
received  by  the  Trust  Administrator  subsequent  to  the  date  hereof  (the
"Custodial Files") as agent for the Trust  Administrator,  in trust, for the use
and benefit of all present and future Certificateholders.

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

     Section 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 Trust Administrator.

     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 Trust Administrator.

     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 Trust Administrator.  With
respect to each Mortgage Note,  Mortgage and other documents  constituting  each
Custodian  File  which  are  delivered  to  the  Custodian,   the  Custodian  is
exclusively  the  bailee  and  agent  of the  Trust  Administrator,  holds  such
documents for the benefit of  Certificateholders  and undertakes to perform such
duties and only such  duties as are  specifically  set forth in this  Agreement.
Except upon compliance with the provisions of Section 2.5 of this Agreement,  no
Mortgage  Note,  Mortgage or other  document  constituting a part of a Custodial
File shall be delivered by the Custodian to the Seller or the Master Servicer or
otherwise released from the possession of the Custodian.

     Section 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;   Trust   Administrator  May  Remove
Custodian.  The  Custodian  may resign from the  obligations  and duties  hereby
imposed upon it as such obligations and duties relate to its acting as Custodian
of the Mortgage  Loans.  Upon  receiving such notice of  resignation,  the Trust
Administrator  shall either take custody of the Custodial  Files itself and give
prompt notice  thereof to the Seller,  the Master  Servicer and the Custodian or
promptly appoint a successor Custodian by written instrument,  in duplicate, one
copy of which instrument  shall be delivered to the resigning  Custodian and one
copy to the successor Custodian. If the Trust Administrator shall not have taken
custody of the  Custodial  Files and no successor  Custodian  shall have been so
appointed and have accepted  resignation,  the resigning  Custodian may petition
any  court  of  competent  jurisdiction  for  the  appointment  of  a  successor
Custodian.

     The Trust  Administrator  may remove  the  Custodian  at any time.  In such
event, the Trust  Administrator  shall appoint, or petition a court of competent
jurisdiction  to  appoint,  a  successor  Custodian  hereunder.   Any  successor
Custodian  shall  be  a  depository   institution   subject  to  supervision  or
examination by federal or state authority and shall be able to satisfy the other
requirements contained in Section 3.7.

     Any  resignation or removal of the Custodian and appointment of a successor
Custodian  pursuant to any of the  provisions  of this  Section 3.5 shall become
effective upon acceptance of appointment by the successor  Custodian.  The Trust
Administrator  shall give prompt notice to the Seller and the Master Servicer of
the appointment of any successor  Custodian.  No successor  Custodian shall have
been appointed and accepted  appointment by the Trust Administrator  without the
prior approval of the Seller and the Master Servicer.

     Section 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  Trust  Administrator  shall  enter  into any  amendment  hereof  except  as
permitted by the Pooling and Servicing Agreement.  The Trust Administrator shall
give prompt  notice to the  Custodian  of any  amendment  or  supplement  to the
Pooling and Servicing  Agreement and furnish the Custodian  with written  copies
thereof.

     Section 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 Trust Administrator,  but only upon direction accompanied by an
Opinion  of  Counsel  to  the  effect  that  such  recordation   materially  and
beneficially affects the interests of the Certificateholders.

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

     Section  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 OF
                                          NORTH CAROLINA

230 South Tryon Street                    By:
Charlotte, North Carolina,  28288            -----------------------------------
                                          Name:
                                               ---------------------------------
                                          Title:
                                                --------------------------------



Address:                                  NORWEST ASSET SECURITIES CORPORATION

7485 New Horizon Way                      By:
Frederick, Maryland  21703                   -----------------------------------
                                          Name:
                                               ---------------------------------
                                          Title:
                                                --------------------------------



Address:                                  NORWEST BANK MINNESOTA, NATIONAL
                                          ASSOCIATION
7485 New Horizon Way
Frederick, Maryland  21703                By:
                                             -----------------------------------
                                          Name:
                                               ---------------------------------
                                          Title:
                                                --------------------------------


Address:                                  [CUSTODIAN]

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


<PAGE>


STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ---- day of ---------,  19--, before me, a notary public in and for
the State of ------------, personally appeared ---------------, known to me who,
being   by  me  duly   sworn,   did   depose   and  say  that  he   resides   at
- --------------------------;   that  he  is  the   ----------  of  Norwest  Asset
Securities Corporation a Delaware corporation,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said corporation.



                                       -----------------------------------------
                                                  Notary Public


[NOTARIAL SEAL]


<PAGE>


STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ---- day of ---------,  19--, before me, a notary public in and for
the State of ------------, personally appeared ---------------, known to me who,
being   by  me  duly   sworn,   did   depose   and  say  that  he   resides   at
- --------------------------; that he is the ---------- of Norwest Bank Minnesota,
National  Association,  a national banking association,  one of the parties that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.


                                       -----------------------------------------
                                                  Notary Public


[NOTARIAL SEAL]


<PAGE>


STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this --- day of --------,  19--,  before me, a notary  public in and for
the State of ------------, personally appeared ---------- ---------, known to me
who,  being  by  me  duly  sworn,   did  depose  and  say  that  he  resides  at
- --------------------------;  that he is the  -------------------- of First Union
National Bank, a national banking association,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said association.


                                       -----------------------------------------
                                                  Notary Public


[NOTARIAL SEAL]


<PAGE>


STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ---- day of --------,  19--,  before me, a notary public in and for
the State of ----------,  personally appeared ---------- ----------, known to me
who,  being  by  me  duly  sworn,   did  depose  and  say  that  he  resides  at
- --------------------------;   that   he  is   the   -----------------------   of
- ----------------------,  a  -------------------------,  one of the parties  that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said association.


                                       -----------------------------------------
                                                  Notary Public


 [NOTARIAL SEAL]


<PAGE>


                                   EXHIBIT F-1

            [Schedule of Mortgage Loans Serviced by Norwest Mortgage
                 from locations other than Frederick, Maryland]

NASCOR
NMI / 1997-15  Exhibit F-1
15 YEAR FIXED RATE NON-RELOCATION AND RELOCATION LOANS



<TABLE>
<CAPTION>
                                                               NET                                              CUT-OFF
MORTGAGE                                             MORTGAGE  MORTGAGE    CURRENT     ORIGINAL   SCHEDULED     DATE
LOAN                                 ZIP    PROPERTY INTEREST  INTEREST    MONTHLY     TERM TO    MATURITY      PRINCIPAL
NUMBER          CITY         STATE   CODE    TYPE     RATE     RATE        PAYMENT     MATURITY   DATE          BALANCE
- ------          ----         -----   ----    ----     ----     ----        -------     --------   ----          -------
<S>     <C>                  <C>     <C>      <C>     <C>        <C>       <C>           <C>      <C>          <C>        

3394484 SCOTTSDALE           AZ      85259     SFD    8.125      7.859     $4,092.25     180      1-Jun-12     $421,331.33
6150117 GILBERT              AZ      85233     SFD    7.875      7.609     $2,475.45     180      1-Jun-12     $258,697.04
6176806 NISSEQUOGUE          NY      11780     SFD    8.125      7.859     $1,781.33     180      1-Aug-12     $184,471.27
6201808 WESTBOROUGH          MA      01581     SFD    7.500      7.234     $3,333.34     180      1-Jul-12     $357,400.27
6259727 CHICAGO              IL      60649     SFD    7.500      7.234     $3,625.08     180      1-Jun-12     $387,484.75
6260759 CARBONDALE           CO      81623     SFD    7.875      7.609     $2,371.12     180      1-Jun-12     $247,794.11
6267580 BEDFORD              NH      03110     SFD    6.875      6.609     $2,657.73     180      1-Jun-12     $295,132.32
6268178 AUSTIN               TX      78734     SFD    8.375      8.109     $2,541.31     180      1-Apr-12     $254,794.96
6268988 SAN LEANDRO          CA      94577     SFD    7.750      7.484     $2,353.19     180      1-Jun-12     $247,769.83
6277629 LA QUINTA            CA      92253     SFD    8.250      7.984     $2,879.38     180      1-Jun-12     $294,266.02
6278137 LAKEVILLE TWNSHP     IA      51360     SFD    8.000      7.734     $2,866.96     180      1-Jun-12     $297,381.74
6281664 CASTLE ROCK          CO      80104     SFD    7.750      7.484     $3,294.46     180      1-Jun-12     $346,877.80
6282168 BOULDER              CO      80303     SFD    7.875      7.609     $2,465.97     180      1-Jun-12     $257,705.85
6284011 HOUSTON              TX      77024     SFD    7.625      7.359     $2,713.65     180      1-Jun-12     $287,793.23
6291663 LA JOLLA             CA      92037     SFD    7.875      7.609     $3,869.68     180      1-Aug-12     $406,807.82
6291867 CEDAR RAPIDS         IA      52403     SFD    7.625      7.359     $2,787.44     180      1-May-12     $294,800.44
6298483 PORTLAND             OR      97212     SFD    7.500      7.234     $2,227.15     180      1-Jul-12     $238,794.29
6299632 SAN DIEGO            CA      92130     SFD    7.500      7.234     $3,578.27     180      1-May-12     $381,293.01
6299840 LINCOLN UNIVERSIT    PA      19352     SFD    7.125      6.859     $2,717.49     180      1-Jul-12     $298,121.96
6300032 MENDHAM              NJ      07945     SFD    7.375      7.109     $5,519.54     180      1-May-12     $592,604.00
6304548 BREWSTER             NY      10509     SFD    8.000      7.734     $1,146.78     180      1-Jun-12     $118,346.70
6308579 DANA POINT           CA      92624     SFD    7.750      7.484     $4,706.38     180      1-Jun-12     $494,950.55
6312720 LODI                 CA      95242     SFD    8.000      7.734     $2,198.00     180      1-Jul-12     $228,666.23
6314325 SANTA CRUZ           CA      95060     SFD    7.250      6.984     $2,738.59     180      1-Jul-12     $298,142.22
6314966 ATLANTA              GA      30327     SFD    7.875      7.609     $3,651.53     180      1-Jun-12     $381,602.90
6316121 LAHAINA              HI      96761     SFD    8.000      7.734     $1,290.13     180      1-Jun-12     $129,768.28
6316434 TUCSON               AZ      85712     SFD    8.000      7.734     $3,201.43     180      1-Jul-12     $333,057.35
6318351 BLOOMFIELD           MI      48302     SFD    8.250      7.984     $3,259.67     180      1-Jun-12     $333,131.36
6321690 COLORADO SPRINGS     CO      80906     SFD    7.625      7.359     $3,811.25     180      1-Jun-12     $404,320.47
6321792 PLYMOUTH             MA      02360     SFD    8.000      7.734     $2,102.43     180      1-Jun-12     $218,079.97
6322336 LAS FLORES           CA      92688     PUD    7.500      7.234     $2,829.16     180      1-Aug-12     $304,269.28
6323447 WOODY CREEK          CO      81656     SFD    8.000      7.734     $4,061.52     180      1-Jul-12     $421,025.44
6329458 MAHWAH               NJ      07430     PUD    8.250      7.984       $436.56     180      1-Jun-12      $44,615.82
6331425 MORGAN HILL          CA      95037     SFD    7.875      7.609     $2,196.61     180      1-Jul-12     $230,242.09
6333416 DARNESTOWN           MD      20878     SFD    7.500      7.234     $2,595.63     180      1-Jun-12     $277,447.22
6334901 STATELINE            NV      89449     SFD    8.250      7.984     $2,585.42     180      1-Jun-12     $264,224.73
6335445 GLEN ROCK            NJ      07452     SFD    8.125      7.859     $2,387.95     180      1-Jul-12     $246,577.64
6335961 MORENO VALLEY        CA      92551     SFD    8.000      7.734       $609.99     180      1-Jun-12      $63,272.93
6338329 EDEN PRAIRIE         MN      55347     SFD    7.500      7.234     $2,317.53     180      1-Jul-12     $248,485.22
6338510 FREDERICKSBURG       TX      78624     SFD    7.750      7.484     $3,195.63     180      1-Jun-12     $336,471.45
6340523 SOLANA BEACH         CA      92075     LCO    7.750      7.484     $1,506.04     180      1-Jun-12     $158,572.70
6343108 MARION               IA      52302     SFD    7.875      7.609     $2,390.09     180      1-Jul-12     $250,522.49
6343853 PARADISE VALLEY      AZ      85253     SFD    8.250      7.984     $2,813.41     180      1-Jul-12     $288,355.04
6350373 WINTERS              CA      95694     SFD    7.750      7.484     $1,609.58     180      1-Jul-12     $169,986.32
6353527 BUFFALO GROVE        IL      60089     SFD    7.875      7.609     $2,352.16     180      1-Aug-12     $247,275.34
6355476 CASHMERE             WA      98815     SFD    7.625      7.359     $2,078.44     180      1-Jun-12     $220,473.13
6358115 WEST BLOOMFIELD      MI      48324     SFD    7.750      7.484     $2,409.67     180      1-Jul-12     $254,482.44
6358382 WHITE BEAR LAKE      MN      55110     SFD    7.500      7.234     $2,781.04     180      1-Jul-12     $298,182.26
6360136 DENVER               CO      80206     LCO    7.625      7.359     $2,287.50     180      1-Jun-12     $242,671.55
6360363 WILMINGTON           NC      28409     SFD    7.750      7.484     $3,576.85     180      1-Jun-12     $376,610.16
6362906 FORT COLLINS         CO      80524     SFD    7.875      7.609     $2,371.12     180      1-Jul-12     $248,534.22
6364458 GLADWYNE             PA      19035     SFD    7.250      6.984     $2,699.79     180      1-Jun-12     $292,994.52
6366091 MODESTO              CA      95356     SFD    7.875      7.609     $3,786.21     180      1-Jun-12     $395,677.61
6367834 VERMILION            OH      44089     SFD    8.000      7.734     $2,819.17     180      1-Jul-12     $293,289.31
6370030 FAIR OAKS            TX      78015     SFD    7.750      7.484     $3,718.04     180      1-Jul-12     $392,658.46
6372470 WASHINGTON           DC      20007     SFD    7.875      7.609     $4,742.25     180      1-Jul-12     $497,068.41
6372919 BRECKENRIDGE         CO      80424     PUD    7.750      7.484     $3,482.72     180      1-Jul-12     $367,806.66
6373976 BRAINERD             MN      56401     SFD    7.750      7.484     $2,597.92     180      1-Jul-12     $274,363.89
6374447 GLENVIEW             IL      60025     SFD    8.000      7.734     $2,920.47     180      1-Jul-12     $303,827.84
6378843 MIAMI BEACH          FL      33139     HCO    7.875      7.609     $2,845.35     180      1-Jul-12     $298,241.05
6381361 ATLANTA              GA      30305     SFD    8.000      7.734     $2,465.58     180      1-Jun-12     $255,748.32
6382348 CASTRO VALLEY        CA      94552     SFD    7.875      7.609     $2,999.00     180      1-Jul-12     $314,346.06
6384716 PLEASANTON           CA      94588     PUD    7.375      7.109     $4,599.62     180      1-Aug-12     $398,072.92
6388386 BOULDER              CO      80304     SFD    7.750      7.484     $2,259.06     180      1-Aug-12     $239,290.94
6388935 WEST BLOOMFIELD      MI      48323     SFD    7.750      7.484     $8,000.84     180      1-Aug-12     $847,488.58
6389142 STILLWATER           MN      55082     SFD    7.875      7.609     $4,742.25     180      1-Jul-12     $497,068.41
6392225 RAMONA               CA      92065     SFD    7.875      7.609     $2,560.81     180      1-Aug-12     $269,211.07
6392570 GREENSBORO           NC      27455     PUD    7.375      7.109     $3,219.73     180      1-Jul-12     $347,856.05
6393442 PONTE VEDRA BEACH    FL      32082     LCO    7.750      7.484     $3,859.23     180      1-Jul-12     $407,569.55
6397113 SCOTTSDALE           AZ      85254     SFD    7.625      7.359     $1,401.19     180      1-Jul-12     $149,101.03
6399165 AUBURNDALE           MA      02166     SFD    7.750      7.484     $1,647.23     180      1-Jul-12     $173,739.12
6401829 HOUSTON              TX      77024     SFD    7.500      7.234     $3,915.60     180      1-Jul-12     $419,829.69
6407021 NEW CANAAN           CT      06840     SFD    7.750      7.484     $3,765.10     180      1-Jul-12     $397,628.83
6407241 FLAGSTAFF            AZ      86001     SFD    7.750      7.484     $2,447.32     180      1-Jul-12     $258,458.74
6407396 MINNEAPOLIS          MN      55409     SFD    7.875      7.609     $2,371.12     180      1-Aug-12     $249,269.51
6408124 MINNETONKA           MN      55305     SFD    7.875      7.609     $2,940.19     180      1-Jul-12     $308,182.43
6413258 PALM SPRINGS         CA      92262     SFD    7.500      7.234     $2,530.74     180      1-Aug-12     $272,175.51
6413641 SEATTLE              WA      98108     SFD    7.750      7.484       $640.07     180      1-Aug-12      $67,799.10
6421763 STRATHAM             NH      03885     SFD    7.625      7.359     $3,082.63     180      1-Aug-12     $328,860.12
6992933 BIG PINE KEY         FL      33043     SFD    7.875      7.609     $8,858.52     180      1-Oct-11     $902,974.72
6993177 GLENWOOD SPRINGS     CO      81601     SFD    8.250      7.984     $5,621.96     180      1-Nov-11     $562,604.89
6993378 LONG LAKE            MN      55356     SFD    8.000      7.734     $3,440.35     180      1-Oct-11     $348,166.96
6993517 ASPEN                CO      81611     SFD    8.000      7.734     $7,645.22     180      1-Nov-11     $776,175.09
6993524 SCOTTSDALE           AZ      85255     SFD    7.875      7.609     $4,268.02     180      1-Nov-11     $436,455.88
6994161 ENGLEWOOD            CO      80111     SFD    7.625      7.359     $2,458.63     180      1-Dec-11     $255,941.53
6996212 SILVERTHORNE         CO      80498     SFD    7.375      7.109     $5,059.58     180      1-Mar-12     $539,767.67
6997721 EDEN PRAIRIE         MN      55347     SFD    7.500      7.234     $5,562.07     180      1-May-12     $592,683.48
6997739 CARY                 NC      27560     SFD    7.875      7.609     $2,488.73     180      1-May-12     $259,302.76
6997758 BURNET               TX      78611     SFD    7.750      7.484     $3,765.10     180      1-May-12     $395,226.94
6997860 FOUNTAIN HILLS       AZ      85268     SFD    7.875      7.609     $2,987.62     180      1-May-12     $311,281.88
6997881 HOUSTON              TX      77005     SFD    8.375      8.109     $4,154.06     180      1-May-12     $420,198.38
6997882 FORT COLLINS         CO      80526     SFD    7.875      7.609     $3,034.28     180      1-May-12     $316,143.82
6997900 SCOTTSDALE           AZ      85255     SFD    8.125      7.859     $2,426.46     180      1-Apr-12     $248,349.85
6997982 AUSTIN               TX      78703     SFD    8.000      7.734     $3,402.12     180      1-May-12     $351,843.51
6998049 CHANHASSEN           MN      55317     SFD    7.750      7.484     $2,682.64     180      1-Jun-12     $282,457.60
6998066 DENVER               CO      80206     SFD    8.000      7.734     $3,501.51     180      1-Jun-12     $362,099.29
6998067 VAIL                 CO      81657     PUD    8.500      8.234     $6,400.81     180      1-May-12     $642,736.71
6998073 SANTA ROSA           CA      95401     SFD    7.750      7.484     $2,259.06     180      1-May-12     $237,136.16
6998096 ALBUQUERQUE          NM      87122     SFD    7.625      7.359     $3,108.60     180      1-May-12     $328,765.70
6998105 UPLAND               CA      91786     SFD    7.500      7.234     $2,641.99     180      1-Jun-12     $281,401.61
6998146 MARBLEHEAD           MA      01945     SFD    7.875      7.609     $2,845.35     180      1-Apr-12     $295,559.10
6998155 RENO                 NV      89509     SFD    8.000      7.734     $2,042.71     180      1-May-12     $211,254.34
6998180 GREEN OAKS           IL      60048     SFD    8.125      7.859     $2,965.68     180      1-May-12     $304,443.03
6998182 BRANDON              MS      39042     SFD    7.750      7.484     $2,259.06     180      1-Jun-12     $237,767.52
6998190 RALEIGH              NC      27615     SFD    7.500      7.234     $2,224.83     180      1-Jun-12     $237,811.89
6998191 CROSSLAKE            MN      56442     SFD    7.875      7.609     $6,354.61     180      1-Jun-12     $664,088.18
6998249 ALAMEDA              CA      94502     SFD    7.500      7.234     $2,410.23     180      1-May-12     $256,829.50
6998263 EDINA                MN      55436     SFD    7.750      7.484     $3,388.59     180      1-Jun-12     $355,861.53
6998322 ALEXANDRIA           VA      22308     SFD    6.875      6.609     $2,675.56     180      1-Jun-12     $297,113.10
6998362 MIDLAND              TX      79705     SFD    7.500      7.234     $2,150.67     180      1-May-12     $228,533.63
6998366 SILVER SPRING        MD      20905     PUD    7.125      6.859     $3,170.41     180      1-Apr-12     $344,473.34
6998373 LA CANADA            CA      91011     SFD    7.875      7.609     $6,677.09     180      1-May-12     $695,690.28
6998387 FAR HILLS            NJ      07931     SFD    7.750      7.484     $3,059.15     180      1-May-12     $321,121.87
6998411 SAN FRANCISCO        CA      94112     SFD    7.875      7.609     $2,465.97     180      1-May-12     $256,931.07
6998430 ROCHESTER            MN      55902     SFD    7.875      7.609     $3,115.66     180      1-Jun-12     $325,601.42
6998444 GOLDEN               CO      80401     SFD    7.500      7.234     $2,271.18     180      1-Jun-12     $242,766.31
6998473 FREMONT              CA      94539     SFD    7.625      7.359     $4,577.24     180      1-Jun-12     $484,975.21
6998479 MPLS                 MN      55403     SFD    7.625      7.359     $4,670.65     180      1-Jun-12     $495,490.76
6998481 AURORA               CO      80016     SFD    7.750      7.484     $4,706.38     180      1-Jun-12     $495,539.68
6998483 WEST DES MOINES      IA      50265     SFD    7.875      7.609     $2,660.32     180      1-Jun-12     $273,290.51
6998499 TACOMA               WA      98407     SFD    7.875      7.609     $3,224.73     180      1-Jun-12     $336,999.96
6998502 ARCHER  CITY         TX      76308     SFD    8.625      8.359     $2,341.31     180      1-Jun-12     $234,050.87
6998510 ALAMEDA              CA      94502     SFD    7.125      6.859     $3,170.41     180      1-Jun-12     $346,703.66
6998519 ROCHESTER            MN      55902     SFD    7.750      7.484     $3,606.97     180      1-Jun-12     $379,781.60
6998521 CINCINNATI           OH      45243     SFD    7.750      7.484     $2,823.83     180      1-Jun-12     $297,323.80
6998540 THOUSAND OAKS        CA      91362     SFD    8.125      7.859     $3,466.38     180      1-Jun-12     $354,885.64
6998574 SAN DIEGO            CA      92037     LCO    8.000      7.734     $2,154.04     180      1-Jun-12     $223,432.82
6998575 LAKE OSWEGO          OR      97034     SFD    8.000      7.734     $3,297.00     180      1-Jun-12     $341,989.01
6998653 CANYON COUNTRY       CA      91351     SFD    7.625      7.359     $5,754.24     180      1-Jun-12     $610,444.63
6998657 NEW MILFORD          NJ      07646     SFD    8.250      7.984     $3,832.05     180      1-May-12     $390,488.04
6998710 PIEDMONT             CA      94611     SFD    7.750      7.484     $3,765.10     180      1-May-12     $395,226.94
6998720 SAVANNAH             GA      31411     SFD    7.250      6.984     $5,431.53     180      1-Mar-12     $583,811.76
6998761 UNION CITY           CA      94587     SFD    7.875      7.609     $2,276.28     180      1-Jun-12     $237,882.33
6998788 PARK CITY            UT      84060     SFD    8.125      7.859     $2,310.92     180      1-Jun-12     $237,928.28
6998803 SAN JOSE             CA      95132     SFD    7.250      6.984     $2,613.98     180      1-Jul-12     $284,576.76
6998815 BELLEVUE             WA      98006     SFD    7.000      6.734     $1,797.66     180      1-Aug-11     $191,503.77
6998820 STATEN ISLAND        NY      10301     SFD    8.500      8.234     $6,400.81     180      1-Jun-11     $621,539.59
6998867 CEDAR CREST          NM      87008     SFD    7.625      7.359     $2,802.39     180      1-Jul-12     $298,202.03
6998874 ELLICOTT CITY        MD      21042     SFD    7.625      7.359     $2,354.01     180      1-Jul-12     $250,489.70
6998883 VIENNA               VA      22182     PUD    7.750      7.484     $2,353.19     180      1-Aug-12     $249,261.39
6998892 CARY                 NC      27511     SFD    7.500      7.234     $2,518.69     180      1-Jul-12     $269,047.50
6998894 SAN JOSE             CA      95132     SFD    8.000      7.734     $2,866.96     180      1-Jun-12     $297,381.74
6998896 MONTGOMERY           NJ      08502     SFD    8.250      7.984     $2,619.38     180      1-Jun-12     $266,684.50
6998917 CUSHING              MN      56443     SFD    7.750      7.484     $4,141.61     180      1-Jul-12     $437,391.72
6998930 SAN DIEGO            CA      92130     SFD    7.375      7.109     $3,191.21     180      1-Aug-12     $345,840.78
6998940 TAOS                 NM      87571     SFD    7.875      7.609     $2,617.72     180      1-Jun-12     $273,564.68
6998951 WINDHAM              NH      03087     SFD    7.625      7.359     $3,025.65     180      1-Jul-12     $321,958.78

                                                                                                            $48,756,558.25
</TABLE>

COUNT:               147
WAC:                 7.781147426
WAM:                 176.4586757
WALTV:               68.78392103

<TABLE>
<CAPTION>


MORTGAGE                                                                     MORTGAGE                     T.O.P.         MASTER
LOAN                                 ZIP      PROPERTY                       INSURANCE       SERVICE       MORTGAGE       SERVICE
NUMBER  CITY                 STATE   CODE     TYPE      LTV      SUBSIDY     CODE            FEE           LOAN           FEE
- ------  ----                 -----   ----     ----      ---      -------     ----           ---           ----           ---
<S>     <C>                    <C>   <C>       <C>     <C>         <C>         <C>           <C>            <C>           <C>     
3394484 SCOTTSDALE             AZ    85259     SFD     78.70                                 0.250                        0.016
6150117 GILBERT                AZ    85233     SFD     90.00                   01            0.250                        0.016
6176806 NISSEQUOGUE            NY    11780     SFD     42.05                                 0.250                        0.016
6201808 WESTBOROUGH            MA    01581     SFD     79.98                                 0.250                        0.016
6259727 CHICAGO                IL    60649     SFD     90.00                   33            0.250                        0.016
6260759 CARBONDALE             CO    81623     SFD     22.73                                 0.250                        0.016
6267580 BEDFORD                NH    03110     SFD     69.98                                 0.250                        0.016
6268178 AUSTIN                 TX    78734     SFD     34.67                                 0.250                        0.016
6268988 SAN LEANDRO            CA    94577     SFD     64.77                                 0.250                        0.016
6277629 LA QUINTA              CA    92253     SFD     80.00                                 0.250                        0.016
6278137 LAKEVILLE TWNSHP       IA    51360     SFD     80.00                                 0.250                        0.016
6281664 CASTLE ROCK            CO    80104     SFD     68.66                                 0.250                        0.016
6282168 BOULDER                CO    80303     SFD     80.00                                 0.250                        0.016
6284011 HOUSTON                TX    77024     SFD     70.00                                 0.250                        0.016
6291663 LA JOLLA               CA    92037     SFD     80.00                                 0.250                        0.016
6291867 CEDAR RAPIDS           IA    52403     SFD     80.00                                 0.250                        0.016
6298483 PORTLAND               OR    97212     SFD     69.64                                 0.250                        0.016
6299632 SAN DIEGO              CA    92130     SFD     79.99                                 0.250                        0.016
6299840 LINCOLN UNIVERSIT      PA    19352     SFD     61.86                                 0.250                        0.016
6300032 MENDHAM                NJ    07945     SFD     45.45                                 0.250                        0.016
6304548 BREWSTER               NY    10509     SFD     48.00                                 0.250                        0.016
6308579 DANA POINT             CA    92624     SFD     80.00                                 0.250                        0.016
6312720 LODI                   CA    95242     SFD     79.58                                 0.250                        0.016
6314325 SANTA CRUZ             CA    95060     SFD     65.93                                 0.250                        0.016
6314966 ATLANTA                GA    30327     SFD     70.00                                 0.250                        0.016
6316121 LAHAINA                HI    96761     SFD     45.76                                 0.250                        0.016
6316434 TUCSON                 AZ    85712     SFD     69.07                                 0.250                        0.016
6318351 BLOOMFIELD             MI    48302     SFD     80.00                                 0.250                        0.016
6321690 COLORADO SPRINGS       CO    80906     SFD     80.00                                 0.250                        0.016
6321792 PLYMOUTH               MA    02360     SFD     80.00                                 0.250                        0.016
6322336 LAS FLORES             CA    92688     PUD     79.05                                 0.250                        0.016
6323447 WOODY CREEK            CO    81656     SFD     55.92                                 0.250                        0.016
6329458 MAHWAH                 NJ    07430     PUD     21.95                                 0.250                        0.016
6331425 MORGAN HILL            CA    95037     SFD     80.00                                 0.250                        0.016
6333416 DARNESTOWN             MD    20878     SFD     80.00                                 0.250                        0.016
6334901 STATELINE              NV    89449     SFD     76.14                                 0.250                        0.016
6335445 GLEN ROCK              NJ    07452     SFD     78.23                                 0.250                        0.016
6335961 MORENO VALLEY          CA    92551     SFD     55.99                                 0.250                        0.016
6338329 EDEN PRAIRIE           MN    55347     SFD     57.27                                 0.250                        0.016
6338510 FREDERICKSBURG         TX    78624     SFD     69.61                                 0.250                        0.016
6340523 SOLANA BEACH           CA    92075     LCO     50.00                                 0.250                        0.016
6343108 MARION                 IA    52302     SFD     80.00                                 0.250                        0.016
6343853 PARADISE VALLEY        AZ    85253     SFD     54.72                                 0.250                        0.016
6350373 WINTERS                CA    95694     SFD     62.18                                 0.250                        0.016
6353527 BUFFALO GROVE          IL    60089     SFD     80.00                                 0.250                        0.016
6355476 CASHMERE               WA    98815     SFD     89.00                    06           0.250                        0.016
6358115 WEST BLOOMFIELD        MI    48324     SFD     80.00                                 0.250                        0.016
6358382 WHITE BEAR LAKE        MN    55110     SFD     80.00                                 0.250                        0.016
6360136 DENVER                 CO    80206     LCO     80.00                                 0.250                        0.016
6360363 WILMINGTON             NC    28409     SFD     80.00                                 0.250                        0.016
6362906 FORT COLLINS           CO    80524     SFD     65.79                                 0.250                        0.016
6364458 GLADWYNE               PA    19035     SFD     70.00                                 0.250                        0.016
6366091 MODESTO                CA    95356     SFD     80.00                                 0.250                        0.016
6367834 VERMILION              OH    44089     SFD     61.46                                 0.250                        0.016
6370030 FAIR OAKS              TX    78015     SFD     76.70                                 0.250                        0.016
6372470 WASHINGTON             DC    20007     SFD     62.50                                 0.250                        0.016
6372919 BRECKENRIDGE           CO    80424     PUD     79.71                                 0.250                        0.016
6373976 BRAINERD               MN    56401     SFD     80.00                                 0.250                        0.016
6374447 GLENVIEW               IL    60025     SFD     80.00                                 0.250                        0.016
6378843 MIAMI BEACH            FL    33139     HCO     49.18                                 0.250                        0.016
6381361 ATLANTA                GA    30305     SFD     57.33                                 0.250                        0.016
6382348 CASTRO VALLEY          CA    94552     SFD     79.97                                 0.250                        0.016
6384716 PLEASANTON             CA    94588     PUD     69.83                                 0.250                        0.016
6388386 BOULDER                CO    80304     SFD     60.00                                 0.250                        0.016
6388935 WEST BLOOMFIELD        MI    48323     SFD     42.50                                 0.250                        0.016
6389142 STILLWATER             MN    55082     SFD     74.63                                 0.250                        0.016
6392225 RAMONA                 CA    92065     SFD     54.00                                 0.250                        0.016
6392570 GREENSBORO             NC    27455     PUD     64.52                                 0.250                        0.016
6393442 PONTE VEDRA BEACH      FL    32082     LCO     53.59                                 0.250                        0.016
6397113 SCOTTSDALE             AZ    85254     SFD     32.61                                 0.250                        0.016
6399165 AUBURNDALE             MA    02166     SFD     41.47                                 0.250                        0.016
6401829 HOUSTON                TX    77024     SFD     73.46                                 0.250                        0.016
6407021 NEW CANAAN             CT    06840     SFD     64.52                                 0.250                        0.016
6407241 FLAGSTAFF              AZ    86001     SFD     80.00                                 0.250                        0.016
6407396 MINNEAPOLIS            MN    55409     SFD     41.67                                 0.250                        0.016
6408124 MINNETONKA             MN    55305     SFD     67.52                                 0.250                        0.016
6413258 PALM SPRINGS           CA    92262     SFD     70.00                                 0.250                        0.016
6413641 SEATTLE                WA    98108     SFD     57.63                                 0.250                        0.016
6421763 STRATHAM               NH    03885     SFD     60.00                                 0.250                        0.016
6992933 BIG PINE KEY           FL    33043     SFD     58.38                                 0.250                        0.016
6993177 GLENWOOD SPRINGS       CO    81601     SFD     74.58                                 0.250                        0.016
6993378 LONG LAKE              MN    55356     SFD     75.00                                 0.250                        0.016
6993517 ASPEN                  CO    81611     SFD     57.14                                 0.250                        0.016
6993524 SCOTTSDALE             AZ    85255     SFD     59.29                                 0.250                        0.016
6994161 ENGLEWOOD              CO    80111     SFD     80.00                                 0.250                        0.016
6996212 SILVERTHORNE           CO    80498     SFD     56.12                                 0.250                        0.016
6997721 EDEN PRAIRIE           MN    55347     SFD     80.00                                 0.250                        0.016
6997739 CARY                   NC    27560     SFD     79.52                                 0.250                        0.016
6997758 BURNET                 TX    78611     SFD     88.89                    33           0.250                        0.016
6997860 FOUNTAIN HILLS         AZ    85268     SFD     90.00                    11           0.250                        0.016
6997881 HOUSTON                TX    77005     SFD     74.56                                 0.250                        0.016
6997882 FORT COLLINS           CO    80526     SFD     80.00                                 0.250                        0.016
6997900 SCOTTSDALE             AZ    85255     SFD     75.22                                 0.250                        0.016
6997982 AUSTIN                 TX    78703     SFD     80.00                                 0.250                        0.016
6998049 CHANHASSEN             MN    55317     SFD     71.25                                 0.250                        0.016
6998066 DENVER                 CO    80206     SFD     80.00                                 0.250                        0.016
6998067 VAIL                   CO    81657     PUD     55.32                                 0.250                        0.016
6998073 SANTA ROSA             CA    95401     SFD     72.18                                 0.250                        0.016
6998096 ALBUQUERQUE            NM    87122     SFD     78.30                                 0.250                        0.016
6998105 UPLAND                 CA    91786     SFD     40.83                                 0.250                        0.016
6998146 MARBLEHEAD             MA    01945     SFD     74.44                                 0.250                        0.016
6998155 RENO                   NV    89509     SFD     75.00                                 0.250                        0.016
6998180 GREEN OAKS             IL    60048     SFD     80.00                                 0.250                        0.016
6998182 BRANDON                MS    39042     SFD     80.00                                 0.250                        0.016
6998190 RALEIGH                NC    27615     SFD     80.00                                 0.250                        0.016
6998191 CROSSLAKE              MN    56442     SFD     73.63                                 0.250                        0.016
6998249 ALAMEDA                CA    94502     SFD     73.69                                 0.250                        0.016
6998263 EDINA                  MN    55436     SFD     59.02                                 0.250                        0.016
6998322 ALEXANDRIA             VA    22308     SFD     65.93                                 0.250                        0.016
6998362 MIDLAND                TX    79705     SFD     80.00                                 0.250                        0.016
6998366 SILVER SPRING          MD    20905     PUD     69.33                                 0.250                        0.016
6998373 LA CANADA              CA    91011     SFD     50.29                                 0.250                        0.016
6998387 FAR HILLS              NJ    07931     SFD     37.14                                 0.250                        0.016
6998411 SAN FRANCISCO          CA    94112     SFD     80.00                                 0.250                        0.016
6998430 ROCHESTER              MN    55902     SFD     90.00                    06           0.250                        0.016
6998444 GOLDEN                 CO    80401     SFD     74.81                                 0.250                        0.016
6998473 FREMONT                CA    94539     SFD     69.11                                 0.250                        0.016
6998479 MPLS                   MN    55403     SFD     78.25                                 0.250                        0.016
6998481 AURORA                 CO    80016     SFD     75.76                                 0.250                        0.016
6998483 WEST DES MOINES        IA    50265     SFD     40.07                                 0.250                        0.016
6998499 TACOMA                 WA    98407     SFD     80.00                                 0.250                        0.016
6998502 ARCHER  CITY           TX    76308     SFD     80.00                                 0.250                        0.016
6998510 ALAMEDA                CA    94502     SFD     53.27                                 0.250                        0.016
6998519 ROCHESTER              MN    55902     SFD     80.00                                 0.250                        0.016
6998521 CINCINNATI             OH    45243     SFD     50.42                                 0.250                        0.016
6998540 THOUSAND OAKS          CA    91362     SFD     48.98                                 0.250                        0.016
6998574 SAN DIEGO              CA    92037     LCO     70.00                                 0.250                        0.016
6998575 LAKE OSWEGO            OR    97034     SFD     74.84                                 0.250                        0.016
6998653 CANYON COUNTRY         CA    91351     SFD     80.00                                 0.250                        0.016
6998657 NEW MILFORD            NJ    07646     SFD     78.22                                 0.250                        0.016
6998710 PIEDMONT               CA    94611     SFD     41.67                                 0.250                        0.016
6998720 SAVANNAH               GA    31411     SFD     70.00                                 0.250                        0.016
6998761 UNION CITY             CA    94587     SFD     69.16                                 0.250                        0.016
6998788 PARK CITY              UT    84060     SFD     80.00                                 0.250                        0.016
6998803 SAN JOSE               CA    95132     SFD     72.26                                 0.250                        0.016
6998815 BELLEVUE               WA    98006     SFD     40.94                                 0.250                        0.016
6998820 STATEN ISLAND          NY    10301     SFD     69.89                                 0.250                        0.016
6998867 CEDAR CREST            NM    87008     SFD     50.00                                 0.250                        0.016
6998874 ELLICOTT CITY          MD    21042     SFD     80.00                                 0.250                        0.016
6998883 VIENNA                 VA    22182     PUD     45.35                                 0.250                        0.016
6998892 CARY                   NC    27511     SFD     49.70                                 0.250                        0.016
6998894 SAN JOSE               CA    95132     SFD     80.00                                 0.250                        0.016
6998896 MONTGOMERY             NJ    08502     SFD     60.21                                 0.250                        0.016
6998917 CUSHING                MN    56443     SFD     79.28                                 0.250                        0.016
6998930 SAN DIEGO              CA    92130     SFD     79.99                                 0.250                        0.016
6998940 TAOS                   NM    87571     SFD     80.00                                 0.250                        0.016
6998951 WINDHAM                NH    03087     SFD     90.00                    12           0.250                        0.016 
</TABLE>


<PAGE>


                                   EXHIBIT F-2

                    [Schedule of Mortgage Loans Serviced by
                    Norwest Mortgage in Frederick, Maryland]

NASCOR
NMI / 1997-15  Exhibit F-2
15 YEAR FIXED RATE NON-RELOCATION AND RELOCATION LOANS

<TABLE>
<CAPTION>

                                                               NET                                         CUT-OFF
MORTGAGE                                            MORTGAGE   MORTGAGE    CURRENT   ORIGINAL  SCHEDULED   DATE
LOAN                                ZIP   PROPERTY  INTEREST   INTEREST    MONTHLY   TERM TO   MATURITY    PRINCIPAL
NUMBER   CITY                STATE  CODE   TYPE     RATE       RATE        PAYMENT   MATURITY  DATE        BALANCE
- ------   ----                -----  ----   ----     ----       ----        -------   -------- ----        -------
<S>      <C>                  <C>   <C>    <C>     <C>         <C>         <C>         <C>      <C>         <C>   

4505819  ESKO                 MN    55733  SFD     5.125       4.859         $637.86   180      1-May-11     $75,106.05
4506243  TAKOMA PARK          MD    20912  SFD     5.625       5.359         $723.24   180      1-Jun-11     $82,968.26
4507250  ROSWELL              GA    30075  SFD     5.625       5.359       $1,705.13   180      1-May-11    $193,049.68
4511199  BELLEVUE             WA    98006  SFD     7.250       6.984       $4,703.07   180      1-Jul-12    $512,009.59
4545629  FAIRFAX STATION      VA    22039  SFD     7.750       7.484       $2,111.88   180      1-Nov-11    $217,538.31
4549574  KENSINGTON           MD    20895  SFD     7.875       7.609       $1,147.63   180      1-Jul-12    $120,232.79
4554008  SPARKS               NV    89436  SFD     7.250       6.984       $2,380.75   180      1-Jul-12    $258,884.79
4565149  EDMOND               OK    73034  SFD     7.125       6.859       $2,116.48   180      1-Sep-12    $233,650.00
4565658  OMAHA                NE    68118  SFD     7.375       7.109       $2,115.83   180      1-Jun-12    $227,760.88
4566260  KETCHUM              ID    83340  SFD     7.500       7.234       $2,873.74   180      1-Sep-12    $310,000.00
4567937  CINCINNATI           OH    45208  SFD     7.750       7.484       $3,176.81   180      1-Feb-12    $328,781.55
4568781  WESTHAMPTON          NY    11977  LCO     7.875       7.609       $2,039.17   180      1-Apr-12    $211,817.33
4569113  WOODSTOCK            GA    30189  SFD     6.875       6.609       $2,148.48   180      1-Sep-12    $240,900.00
4569922  SUGAR LAND           TX    77479  SFD     7.875       7.609       $2,646.18   180      1-Aug-12    $278,184.76
4571078  ALEXANDRIA           KY    41001  SFD     6.125       5.859         $850.63   180      1-Jun-12     $98,974.14
4571207  WALNUT CREEK         CA    94598  SFD     7.375       7.109       $2,207.82   180      1-Jul-12    $238,229.86
4572878  FAIRFAX              VA    22033  SFD     7.625       7.359       $2,335.33   180      1-Aug-12    $249,253.21
4576248  MORRIS PLAINS        NJ    07950  SFD     7.500       7.234       $2,132.13   180      1-Jul-12    $228,606.40
4577175  BROOKLYN             NY    11234  SFD     7.750       7.484       $2,075.52   180      1-Jul-12    $219,192.88
4577728  SAN MATEO            CA    94402  HCO     7.500       7.234       $3,485.57   180      1-Jul-12    $373,721.76
4578392  FRISCO               TX    75034  SFD     7.750       7.484       $2,259.07   180      1-Apr-12    $236,408.55
4579182  CARY                 NC    27513  SFD     7.000       6.734       $2,247.08   180      1-Aug-12    $249,211.25
4579417  WEST BLOOMFIELD      MI    48322  SFD     7.750       7.484       $3,915.71   180      1-Jul-12    $413,533.98
4579456  GRANADA HILLS        CA    91344  LCO     8.250       7.984         $403.58   180      1-Apr-12     $41,003.96
4579768  RICHMOND             VA    23233  SFD     7.125       6.859       $2,073.91   180      1-Jun-12    $226,510.36
4580512  ATLANTA              GA    30327  SFD     7.750       7.484       $2,823.83   180      1-May-12    $296,420.19
4581331  ENGLEWOOD            CO    80111  SFD     7.000       6.734       $2,696.49   180      1-Jun-12    $297,143.94
4581654  ATLANTA              GA    30327  SFD     7.125       6.859       $3,985.66   180      1-Jul-12    $437,245.53
4582694  LAGUNA NIGUEL        CA    92677  SFD     7.500       7.234       $2,284.63   180      1-May-12    $243,444.70
4582874  DALLAS               TX    75240  SFD     7.625       7.359       $2,254.06   180      1-Jul-12    $239,853.82
4582924  MOUNTAIN LAKES       NJ    07046  SFD     7.375       7.109       $2,391.81   180      1-Jul-12    $258,407.34
4583237  BARDONIA             NY    10954  SFD     8.125       7.859       $2,041.31   180      1-Jul-12    $210,784.11
4584379  CARMEL               IN    46032  SFD     6.750       6.484       $3,229.92   180      1-Aug-12    $363,823.21
4584716  ALPHARETTA           GA    30202  SFD     7.250       6.984       $2,282.16   180      1-Jul-12    $248,451.85
4585619  HOUSTON              TX    77069  SFD     7.250       6.984       $2,373.45   180      1-Jun-12    $257,497.43
4585670  SOUTHOLD             NY    11971  SFD     8.375       8.109         $836.68   180      1-Jun-12     $84,877.20
4585909  SONOMA               CA    95476  PUD     8.150       7.884       $1,578.62   180      1-Feb-12    $159,443.33
4586108  BROOKLYN             NY    11230  SFD     8.125       7.859       $2,542.01   180      1-May-12    $260,951.17
4586239  FRESNO               CA    93720  SFD     7.625       7.359       $2,390.91   180      1-Jun-12    $253,641.71
4586538  HERNDON              VA    22071  SFD     7.500       7.234       $3,237.13   180      1-Aug-12    $348,145.37
4586775  CINCINNATI           OH    45242  SFD     8.375       8.109       $3,401.45   180      1-Jun-12    $344,961.16
4586790  HATTIESBURG          MS    39402  SFD     8.000       7.734       $2,591.73   180      1-Jun-12    $268,728.74
4586948  HOUSTON              TX    77082  SFD     7.700       7.434         $234.61   180      1-Dec-11     $24,314.87
4587334  BIRMINGHAM           AL    35244  SFD     7.625       7.359       $2,727.66   180      1-Jul-12    $290,249.97
4587795  RIDGWAY              CO    81432  SFD     7.750       7.484       $2,823.83   180      1-Jul-12    $278,124.74
4589443  LOS ANGELES          CA    90049  LCO     7.375       7.109       $5,059.58   180      1-Jun-12    $544,930.86
4589514  SEASIDE              OR    97138  SFD     8.000       7.734       $2,756.11   180      1-Jul-12    $286,727.56
4589556  PORT JEFFERSON       NY    11777  LCO     8.125       7.859       $1,201.20   180      1-Jul-12    $124,034.52
4589577  PENN VALLEY          PA    19072  SFD     6.750       6.484       $4,424.55   180      1-Aug-12    $497,812.50
4589898  PALMETTO             FL    34221  HCO     7.350       7.084         $642.96   180      1-Mar-12     $68,404.42
4589919  HOUSTON              TX    77056  SFD     7.700       7.434       $2,242.81   180      1-Mar-12    $234,675.78
4589937  PROVIDENCE           RI    02906  SFD     7.250       6.984       $2,738.59   180      1-Aug-12    $299,073.91
4589976  WOODSTOCK            GA    30189  SFD     7.125       6.859       $2,264.58   180      1-Jul-12    $248,434.96
4590018  BERNARDS TWNSHP      NJ    07931  SFD     7.500       7.234       $5,005.87   180      1-Jul-12    $536,728.07
4590331  WHEATON              IL    60187  SFD     7.125       6.859       $2,491.04   180      1-Jul-12    $273,278.45
4590332  CINCINNATI           OH    45201  SFD     7.250       6.984       $3,925.32   180      1-Jul-12    $427,337.18
4590441  SCARSDALE            NY    10583  SFD     8.000       7.734       $2,790.51   180      1-Aug-12    $290,823.61
4590657  BELLPORT             NY    11713  SFD     8.125       7.859       $2,888.65   180      1-Jul-12    $298,279.39
4590695  ALEXANDRIA           VA    22307  SFD     7.625       7.359       $2,354.01   180      1-Jun-12    $249,727.34
4590848  GARDEN CITY SOUTH    NY    11530  SFD     8.250       7.984       $2,091.87   180      1-Aug-12    $215,015.55
4590863  BROOKLINE            MA    02146  SFD     7.750       7.484       $2,880.30   180      1-Jul-12    $304,186.06
4591488  DALLAS               TX    75219  SFD     7.250       6.984       $2,209.13   180      1-Jan-12    $235,895.20
4591595  ATLANTA              GA    30328  SFD     7.875       7.609       $5,809.26   180      1-Jun-12    $607,095.50
4591659  MAMARONECK           NY    10543  SFD     7.875       7.609       $3,793.80   180      1-Jun-12    $396,470.54
4591720  BAYSIDE              NY    11361  SFD     7.875       7.609       $1,678.76   180      1-Jul-12    $175,962.21
4592054  MONTAUK              NY    11954  LCO     8.375       8.109         $894.34   180      1-Jul-12     $90,986.72
4592165  FAIRPORT             NY    14450  SFD     7.625       7.359       $3,250.78   180      1-Jul-12    $345,914.33
4592255  SEWICKLEY            PA    15143  SFD     7.125       6.859       $1,947.54   180      1-Jul-12    $213,654.06
4593335  EUGENE               OR    97408  SFD     7.500       7.234       $3,059.14   180      1-Aug-12    $329,003.36
4593656  KNOXVILLE            TN    37922  SFD     8.000       7.734       $2,245.78   180      1-Jun-12    $232,949.05
4594762  SIMSBURY             CT    06070  SFD     7.500       7.234       $4,635.07   180      1-Jul-12    $496,970.42
4594927  PARK CITY            UT    84060  LCO     7.875       7.609       $2,845.35   180      1-Apr-12    $295,559.10
4595406  YARDLEY              PA    19067  SFD     7.375       7.109       $1,986.12   180      1-Jul-12    $214,577.48
4595874  NEWPORT COAST        CA    92657  LCO     7.250       6.984       $2,694.78   180      1-Sep-12    $295,200.00
4596217  SAYREVILLE           NJ    08872  SFD     7.625       7.359         $700.60   180      1-Jun-12     $74,323.61
4596306  SAN RAFAEL           CA    94901  SFD     7.300       7.034       $4,807.34   180      1-Apr-12    $514,805.78
4596329  BOCA RATON           FL    33431  PUD     7.800       7.534         $811.97   180      1-Apr-12     $84,361.31
4596420  BRIDGEWATER          NJ    08807  LCO     7.375       7.109       $1,379.89   180      1-Jul-12    $149,081.16
4596471  DUNN LORING          VA    22027  SFD     7.125       6.859       $2,717.49   180      1-Jul-12    $297,998.67
4596492  FOLSOM               CA    95630  SFD     7.750       7.484       $2,353.19   180      1-Jun-12    $247,769.83
4596495  ORANGEVALE           CA    95662  SFD     7.875       7.609       $3,049.27   180      1-Jun-12    $318,663.18
4596561  VICTOR               NY    14564  SFD     7.250       6.984       $3,122.00   180      1-Jul-12    $339,882.12
4596617  LITTLE ROCK          AR    72205  SFD     8.000       7.734       $2,522.92   180      1-Jun-12    $261,695.92
4596812  UNION                NJ    07083  SFD     8.250       7.984       $1,622.56   180      1-Aug-12    $166,777.28
4597047  AURORA               CO    80016  SFD     7.750       7.484       $2,588.51   180      1-Jun-12    $271,892.33
4597113  WESTON               CT    06883  SFD     7.125       6.859       $2,491.04   180      1-Jul-12    $272,775.48
4597149  WESTON               FL    33326  SFD     7.625       7.359       $2,335.33   180      1-Jul-12    $248,501.68
4597152  NAPLES               FL    34102  SFD     7.850       7.584       $2,591.98   180      1-Apr-12    $269,639.58
4597166  DEERFIELD BEACH      FL    33442  PUD     7.650       7.384         $842.01   180      1-Apr-12     $88,641.49
4597176  BOCA RATON           FL    33496  SFD     7.750       7.484       $3,388.60   180      1-Apr-12    $354,612.87
4597240  DELRAY BEACH         FL    33483  SFD     7.950       7.684       $2,827.82   180      1-Apr-12    $292,176.54
4597669  LOS ANGELES          CA    90025  SFD     7.875       7.609       $2,333.19   180      1-Jun-12    $243,829.38
4597861  PLANO                TX    75093  SFD     7.250       6.984       $4,336.10   180      1-Jul-12    $472,058.52
4598044  WASHINGTON           DC    20016  SFD     7.000       6.734       $2,696.49   180      1-Jul-12    $298,101.50
4598081  JERICHO              NY    11753  SFD     8.250       7.984       $2,619.38   180      1-Aug-12    $269,236.87
4598089  VIRGINIA BEACH       VA    23454  SFD     7.875       7.609       $2,983.35   180      1-Jul-12    $312,705.73
4598159  NORTH MANKATO        MN    56003  SFD     7.125       6.859       $2,341.13   180      1-Jul-12    $255,826.11
4598473  JONESBORO            AR    72401  SFD     7.750       7.484       $2,400.25   180      1-Jul-12    $253,488.38
4598503  MATAIRIE             LA    70005  SFD     8.000       7.734       $2,211.38   180      1-Jun-12    $229,380.46
4598574  COLORADO SPRINGS     CO    80906  SFD     8.000       7.734       $2,628.05   180      1-Jun-12    $272,599.93
4598585  VIRGINIA BEACH       VA    23454  SFD     7.875       7.609       $2,371.12   180      1-Jun-12    $247,794.11
4598633  SCARSDALE            NY    10583  THS     7.875       7.609       $1,636.08   180      1-Jul-12    $171,271.55
4598775  HOUSTON              TX    77094  SFD     7.125       6.859       $2,491.04   180      1-Jul-12    $273,103.41
4599015  PLAINVIEW            NY    11803  SFD     7.875       7.609         $844.13   180      1-Jul-12     $88,478.16
4599085  CORPUS CHRISTI       TX    78413  SFD     8.000       7.734       $1,720.17   180      1-Jun-12    $178,429.06
4599414  SACRAMENTO           CA    95816  SFD     7.875       7.609       $3,793.80   180      1-Jul-12    $397,654.73
4599449  KEY WEST             FL    33040  SFD     8.500       8.234       $2,481.54   180      1-Jul-12    $250,601.99
4599794  NEW YORK             NY    10023  HCO     7.750       7.484       $6,617.17   180      1-Jul-12    $698,832.66
4599949  EAST ORLEANS         MA    02643  SFD     8.375       8.109       $2,514.92   180      1-Jun-12    $255,127.36
4600100  HINGHAM              MA    02043  SFD     8.000       7.734       $2,446.47   180      1-Jul-12    $254,515.46
4600490  SCOTTSDALE           AZ    85255  SFD     7.750       7.484       $5,647.65   180      1-Jun-12    $594,647.63
4600597  REDMOND              WA    98052  SFD     7.625       7.359       $2,967.73   180      1-Jun-12    $314,740.09
4600728  HO HO KUS            NJ    07423  SFD     7.000       6.734       $2,247.08   180      1-Aug-12    $249,211.25
4600760  LUTZ                 FL    33549  SFD     7.500       7.234       $2,132.13   180      1-Jul-12    $228,606.40
4600831  SCOTCH PLAINS        NJ    07076  SFD     7.500       7.234       $2,159.94   180      1-Jul-12    $231,588.22
4600875  ORADELL              NJ    07649  SFD     7.750       7.484       $2,023.75   180      1-Aug-12    $214,364.79
4601042  BRENTWOOD            TN    37027  SFD     7.750       7.484       $2,588.51   180      1-Jun-12    $272,546.82
4601179  OSSINING             NY    10562  SFD     8.125       7.859       $2,310.92   180      1-Aug-12    $239,314.08
4601268  FLORA                MS    39071  SFD     7.875       7.609       $6,062.97   180      1-Jul-12    $635,501.96
4601281  TONKA BAY            MN    55331  SFD     7.875       7.609       $4,742.25   180      1-Jul-12    $497,068.41
4601341  LIBERTYVILLE         IL    60048  SFD     7.125       6.859       $2,717.50   180      1-Aug-12    $299,063.75
4601442  ENGLEWOOD            NJ    07632  SFD     8.000       7.734       $1,651.37   180      1-Aug-12    $172,300.63
4601596  LONG BEACH           NY    11561  SFD     7.875       7.609       $1,232.99   180      1-Aug-12    $129,620.14
4601731  ESSEX FELLS          NJ    07021  SFD     7.000       6.734       $3,012.88   180      1-Sep-12    $335,200.00
4601782  RICHFIELD            OH    44286  SFD     7.750       7.484       $2,857.72   180      1-Jul-12    $301,800.27
4601786  PORTLAND             OR    97229  SFD     8.125       7.859       $2,903.09   180      1-Jul-12    $299,770.79
4602182  ROCHESTER            MN    55901  SFD     7.250       6.984       $2,005.11   180      1-Aug-12    $218,971.94
4602196  STRATHAM             NH    03885  SFD     7.750       7.484       $3,300.30   120      1-Jul-07    $271,204.76
4602270  FRANKLIN             TN    37064  SFD     8.125       7.859       $3,071.60   180      1-Jul-12    $317,170.42
4602321  KATY                 TX    77450  SFD     7.375       7.109       $2,188.96   180      1-Jul-12    $236,492.42
4602396  ATLANTA              GA    30327  SFD     7.375       7.109       $2,115.83   180      1-Jul-12    $228,591.11
4602411  CORDELE              GA    31015  SFD     7.750       7.484       $2,710.88   180      1-Jul-12    $286,292.74
4602423  WILLIAMSBURG         VA    23185  SFD     7.750       7.484       $4,235.74   180      1-Aug-12    $448,670.51
4602863  REHOBOTH             DE    19971  SFD     7.625       7.359       $2,428.74   180      1-Jul-12    $258,441.75
4603006  HATTERAS             NC    27943  SFD     7.875       7.609       $3,793.80   180      1-Jul-12    $397,654.73
4603439  WESTERVILLE          OH    43082  SFD     7.750       7.484       $2,549.92   180      1-Jun-12    $268,483.39
4603461  CORDELE              GA    31015  SFD     7.750       7.484       $2,823.83   180      1-Aug-12    $299,113.67
4603692  NOVI                 MI    48167  SFD     7.375       7.109       $2,483.79   180      1-Jun-12    $267,511.52
4603710  NAPLES               FL    34119  SFD     7.875       7.609       $2,185.23   180      1-Jun-12    $228,367.02
4603763  BAKERSFIELD          CA    93309  SFD     7.875       7.609       $3,129.88   180      1-Jul-12    $328,065.16
4603773  MORGAN HILL          CA    95037  SFD     7.500       7.234       $2,549.29   180      1-Jul-12    $273,333.73
4603777  SANTA ROSA           CA    95404  SFD     7.300       7.034         $732.55   180      1-May-12     $78,890.01
4603780  BURBANK              CA    91505  SFD     7.750       7.484       $1,317.79   180      1-May-12    $138,329.42
4603790  CENTEREACH           NY    11720  SFD     8.200       7.934         $386.90   180      1-May-12     $39,541.06
4603801  SHORE ACRES          TX    77571  SFD     8.100       7.834         $907.60   180      1-May-12     $93,105.36
4603811  SYOSSET              NY    11791  SFD     7.850       7.584       $2,225.49   180      1-May-12    $230,904.32
4603821  NAPLES               FL    33963  LCO     8.200       7.934       $1,083.31   180      1-May-12    $110,715.00
4603843  TEMPLE CITY          CA    91780  SFD     8.050       7.784       $1,437.82   180      1-May-12    $148,256.27
4603986  SAN JOSE             CA    95125  SFD     7.750       7.484       $2,353.19   180      1-Jul-12    $248,518.01
4604056  OAK RIDGE            TN    37830  SFD     7.750       7.484       $3,049.73   180      1-Sep-12    $324,000.00
4604094  PALOS VERDES ESTAT   CA    90274  SFD     7.125       6.859       $2,491.04   180      1-Jul-12    $273,278.45
4604102  COLD SPRING HARBOR   1NY    11724  SFD     7.875       7.609       $3,755.87   180      1-Aug-12    $394,842.88
4604305  PLANO                TX    75093  SFD     8.000       7.734       $3,182.33   180      1-Jul-12    $331,068.92
4604358  PLYMOUTH             MN    55446  SFD     7.125       6.859       $2,264.58   180      1-Aug-12    $249,219.80
4604409  SYOSSET              NY    11791  SFD     7.750       7.484       $1,788.42   180      1-Sep-12    $190,000.00
4604424  BETHESDA             MD    20816  SFD     7.625       7.359       $2,335.33   180      1-Aug-12    $249,253.21
4604481  PHOENIXVILLE         PA    19460  SFD     7.125       6.859       $2,400.46   180      1-Jul-12    $263,140.51
4604809  CHAGRIN FALLS        OH    44023  SFD     7.125       6.859       $2,835.26   180      1-Aug-12    $312,023.18
4604816  MOORPARK             CA    93021  SFD     7.500       7.234       $2,127.50   180      1-Aug-12    $228,806.88
4604987  MORRIS TOWNSHIP      NJ    07960  SFD     7.250       6.984       $2,088.18   180      1-Jul-12    $227,333.45
4605029  CHATSWORTH           CA    91311  SFD     7.750       7.484       $2,183.39   180      1-Jul-12    $230,584.94
4605204  STATEN ISLAND        NY    10312  SFD     8.375       8.109       $2,486.57   180      1-Jul-12    $252,972.90
4605245  UPPER MAKEFIELD      PA    18940  SFD     7.875       7.609       $2,750.51   180      1-Jul-12    $288,299.67
4605257  EDMOND               OK    73034  SFD     7.500       7.234       $2,572.46   180      1-Aug-12    $276,661.92
4605540  CHESTERFIELD         MO    63017  SFD     8.250       7.984       $1,410.10   180      1-Jul-12    $144,525.54
4605582  NEW YORK             NY    10007  SFD     7.875       7.609       $4,742.25   180      1-Aug-12    $498,539.00
4605772  MORAGA               CA    94556  SFD     7.625       7.359       $2,568.86   180      1-Jul-12    $273,351.86
4606035  UNION                NJ    07083  SFD     8.125       7.859       $1,058.21   180      1-Aug-12    $109,585.90
4606060  AUSTIN               TX    78730  SFD     8.000       7.734       $3,583.70   180      1-Jun-12    $371,727.18
4606219  SAN JOSE             CA    95148  SFD     8.125       7.859       $1,660.01   180      1-Jun-12    $170,911.82
4606261  COLUMBUS             OH    43220  SFD     7.750       7.484       $2,108.46   180      1-Jul-12    $220,665.68
4606274  ATLANTIC BEACH       NY    11509  SFD     7.625       7.359       $3,852.36   180      1-Aug-12    $411,168.10
4606704  DALLAS               TX    75248  SFD     7.750       7.484       $2,399.32   180      1-Jun-12    $252,524.16
4606821  MARINA DEL REY       CA    90292  LCO     7.375       7.109       $2,621.79   180      1-Jul-12    $283,254.19
4606980  WOODSTOCK            GA    30189  SFD     7.500       7.234       $2,781.04   180      1-Jul-12    $298,182.26
4607018  SCOTTSDALE           AZ    85259  SFD     7.250       6.984       $3,249.80   180      1-Aug-12    $354,901.03
4607134  ALPHARETTA           GA    30202  SFD     7.250       6.984       $3,423.24   180      1-Jul-12    $372,677.78
4607188  CLIVE                IA    50325  SFD     7.375       7.109       $2,722.98   180      1-Jul-12    $294,186.82
4607322  MARIETTA             GA    30067  SFD     7.375       7.109       $2,483.80   180      1-Jul-12    $267,826.71
4607384  BATESVILLE           IN    47006  SFD     8.000       7.734       $2,251.52   180      1-Jul-12    $234,233.76
4607752  MOULTONBOROUGH       NH    03254  SFD     8.000       7.734       $4,481.69   170      1-Oct-11    $453,551.64
4607890  LEAWOOD              KS    66213  SFD     7.000       6.734       $4,179.56   180      1-Aug-12    $463,532.94
4608073  GRANTS PASS          OR    97526  SFD     7.750       7.484       $2,703.34   180      1-Aug-12    $286,351.49
4608177  COLLEYVILLE          TX    76034  SFD     7.500       7.234       $2,549.29   180      1-Jul-12    $273,333.73
4608276  UPPER MONTCLAIR      NJ    07043  SFD     6.875       6.609       $2,006.68   180      1-Aug-12    $224,282.38
4608305  DUBLIN               OH    43016  SFD     7.250       6.984       $3,195.03   180      1-Aug-12    $348,919.56
4608334  OVERLAND PARK        KS    66221  SFD     7.250       6.984       $2,282.16   180      1-Aug-12    $249,228.26
4608355  GREER                SC    29651  SFD     7.500       7.234       $2,039.43   180      1-Aug-12    $219,335.57
4608514  WAYNE TOWNSHIP       NJ    07470  SFD     8.000       7.734       $3,344.79   180      1-Aug-12    $348,988.54
4608749  MOUNT VERNON         WA    98273  SFD     7.500       7.234       $2,317.53   180      1-Jul-12    $248,207.64
4608928  SURING               WI    54174  SFD     8.125       7.859         $674.02   180      1-Jul-12     $69,598.52
4608939  SPRING               TX    77379  SFD     7.950       7.684       $1,000.41   180      1-Jun-12    $104,079.58
4608946  CHATSWORTH           CA    91311  SFD     7.750       7.484       $1,176.60   180      1-Jun-12    $123,205.53
4609089  ROGERS               AR    72758  SFD     7.375       7.109       $2,097.43   180      1-Jun-12    $225,898.60
4609240  ROSWELL              GA    30075  SFD     7.375       7.109       $2,299.81   180      1-Jul-12    $248,468.61
4609322  MEDFORD              OR    97501  SFD     7.625       7.359       $2,101.80   180      1-Jul-12    $223,651.51
4609354  CARMEL               IN    46032  SFD     7.875       7.609       $2,835.87   180      1-Jul-12    $297,246.90
4609362  STAMFORD             CT    06903  SFD     7.250       6.984       $2,282.16   180      1-Aug-12    $249,228.26
4609628  HAMMOND              IN    46323  SFD     8.500       8.234         $413.60   180      1-Jul-12     $41,766.98
4609724  SAN JOSE             CA    95136  SFD     8.250       7.984       $2,741.62   180      1-Jul-12    $280,997.02
4609826  SALINAS              CA    93908  SFD     7.500       7.234       $2,910.82   180      1-Jul-12    $312,097.43
4609924  WHITTIER             CA    90603  SFD     7.875       7.609       $3,338.54   180      1-Jul-12    $349,936.17
4609998  LAS VEGAS            NV    89134  SFD     8.500       8.234       $2,166.43   180      1-Jun-12    $218,162.76
4610257  ANAHEIM              CA    92807  PUD     7.375       7.109       $2,690.78   180      1-Aug-12    $291,606.88
4610270  MARSHALL             VA    20115  SFD     7.625       7.359       $4,670.65   180      1-Jul-12    $497,003.38
4610276  AFTON                OK    74331  SFD     7.875       7.609       $2,845.35   180      1-Jul-12    $298,241.05
4610362  ALPHARETTA           GA    30005  SFD     7.250       6.984       $2,738.59   180      1-Sep-12    $300,000.00
4610367  HOLLIS               NH    03049  SFD     7.250       6.984       $2,074.03   180      1-Jul-12    $225,793.04
4610373  NASHVILLE            TN    37215  SFD     7.625       7.359       $2,129.82   180      1-Jul-12    $226,633.53
4610476  WASHINGTON           DC    20007  THS     8.125       7.859       $2,277.22   180      1-Jul-12    $235,143.60
4610562  PALOS VERDES ESTAT   CA    90274  SFD     7.625       7.359       $5,604.78   180      1-Jun-12    $594,588.92
4610583  SANTA BARBARA        CA    93103  SFD     7.250       6.984       $3,377.60   180      1-Jul-12    $367,708.74
4611077  BRYN MAWR            PA    19010  SFD     6.875       6.609       $4,459.28   180      1-Aug-12    $498,405.30
4611118  SOLON                OH    44139  SFD     6.750       6.484       $2,079.54   180      1-Sep-12    $235,000.00
4611145  CINCINNATI           OH    45237  SFD     7.000       6.734       $2,067.31   180      1-Sep-12    $230,000.00
4611222  ALHAMBRA             CA    91801  LCO     7.875       7.609       $1,005.36   180      1-Jul-12    $105,378.50
4611242  MATTITUCK            NY    11952  SFD     7.875       7.609         $948.45   180      1-Aug-12     $99,707.80
4611258  SOUTHAMPTON          NY    11968  SFD     8.000       7.734       $2,198.00   180      1-Jul-12    $228,666.24
4611285  CARY                 NC    27511  SFD     7.250       6.984       $2,464.73   180      1-Jul-12    $268,328.00
4611595  SAN FRANCISCO        CA    94131  SFD     7.625       7.359       $2,005.58   180      1-Jul-12    $213,312.61
4611659  MERCER ISLAND        WA    98040  SFD     7.625       7.359       $2,988.75   180      1-Jul-12    $318,032.46
4611811  LIMA                 OH    45805  SFD     8.000       7.734       $2,121.55   180      1-Jun-12    $220,062.49
4611883  COPPELL              TX    75019  SFD     7.375       7.109       $2,224.84   180      1-Aug-12    $241,111.53
4611887  WHEELING             WV    26003  SFD     7.625       7.359       $4,297.00   180      1-Sep-12    $460,000.00
4611949  LITTLE ROCK          AR    72205  SFD     7.750       7.484       $2,408.72   180      1-Aug-12    $255,143.97
4612585  ISLAMORADA           FL    33036  SFD     7.500       7.234       $2,271.19   180      1-Aug-12    $244,260.06
4612863  DEFIANCE             MO    63341  SFD     8.000       7.734       $2,286.10   180      1-Jul-12    $237,830.77
4612964  SANTA ROSA           CA    95409  SFD     7.375       7.109       $3,725.69   180      1-Sep-12    $405,000.00
4613173  FORT WORTH           TX    76107  SFD     7.625       7.359       $2,143.83   180      1-Aug-12    $228,814.45
4613398  PLEASANT VIEW        UT    84414  SFD     7.500       7.234       $4,082.10   180      1-Jul-12    $437,681.87
4613572  NEW ORLEANS          LA    70127  SFD     7.625       7.359       $2,101.80   180      1-Aug-12    $224,327.89
4613773  BLOOMFIELD HILLS     MI    48301  SFD     7.000       6.734       $5,392.97   180      1-Sep-12    $600,000.00
4613829  COVINGTON            LA    70433  SFD     7.625       7.359       $2,522.15   180      1-Jul-12    $268,381.83
4613958  LEOMINSTER           MA    01453  SFD     7.750       7.484       $1,138.95   180      1-Jul-12    $120,282.71
4613992  ROCIADA              NM    87742  SFD     7.875       7.609       $3,357.52   180      1-Jul-12    $351,009.43
4614019  HACKETTSTOWN         NJ    07846  SFD     7.375       7.109       $2,437.80   180      1-Aug-12    $264,190.85
4614051  ATLANTA              GA    30307  SFD     7.625       7.359       $3,386.23   180      1-Aug-12    $361,417.16
4614146  GALENA               MO    65656  SFD     8.125       7.859       $2,339.80   180      1-Jun-12    $239,891.88
4614187  RICHMOND             VA    23233  SFD     7.750       7.484       $2,541.45   180      1-Jul-12    $268,399.45
4614298  INDIANAPOLIS         IN    46256  SFD     6.625       6.359       $2,063.29   180      1-Aug-12    $234,234.11
4614462  REDWOOD CITY         CA    94061  SFD     7.000       6.734       $2,578.29   180      1-Aug-12    $285,945.00
4614635  BELLAIRE             TX    77401  SFD     7.250       6.984       $3,870.54   180      1-Jul-12    $421,374.35
4614736  NEWPORT BEACH        CA    92660  PUD     7.750       7.484       $9,177.44   180      1-Jul-12    $969,220.26
4614867  IDAHO FALLS          ID    83406  SFD     7.625       7.359       $2,568.86   180      1-Aug-12    $274,178.54
4614892  LOS ALTOS            CA    94022  SFD     7.625       7.359       $3,923.35   180      1-Aug-12    $418,745.40
4614919  WALNUT CREEK         CA    94596  SFD     7.250       6.984       $3,368.47   180      1-Aug-12    $367,860.91
4614981  LONG GROVE           IL    60047  SFD     7.000       6.734       $3,145.90   180      1-Aug-12    $348,895.77
4615088  OLD TAPPAN           NJ    07675  SFD     7.500       7.234       $3,708.05   180      1-Jul-12    $397,576.35
4615509  ROCKVILLE            MD    20850  PUD     7.250       6.984       $1,369.29   180      1-Jul-12    $149,071.12
4615649  SYOSSET              NY    11791  SFD     7.500       7.234       $2,410.24   180      1-Sep-12    $260,000.00
4615733  SEATTLE              WA    98105  SFD     7.250       6.984       $2,775.11   180      1-Aug-12    $303,061.56
4615871  BRASELTON            GA    30517  SFD     7.625       7.359       $3,269.46   180      1-Jul-12    $347,902.36
4616062  ALPHARETTA           GA    30201  SFD     7.500       7.234       $2,291.57   180      1-Jul-12    $245,702.19
4616478  MIDLOTHIAN           VA    23112  SFD     7.250       6.984       $2,004.65   180      1-Aug-12    $218,922.10
4616619  SCOTTSDALE           AZ    85250  SFD     7.625       7.359       $4,614.61   180      1-Jul-12    $491,039.32
4616972  HOUSTON              TX    77024  SFD     7.125       6.859       $2,717.50   180      1-Sep-12    $300,000.00
4617014  DOWNINGTOWN          PA    19335  SFD     7.000       6.734       $2,408.86   180      1-Aug-12    $267,154.47
4617075  LAKE FOREST          CA    92630  PUD     7.625       7.359       $2,344.67   180      1-Aug-12    $250,250.23
4617209  SAN ANTONIO          TX    78212  SFD     7.500       7.234       $3,313.61   180      1-Sep-12    $357,450.00
4617362  SPOKANE              WA    99223  SFD     7.125       6.859       $2,245.56   180      1-Aug-12    $247,126.35
4617541  BRENTWOOD            TN    37027  SFD     7.750       7.484       $3,493.08   180      1-Jul-12    $368,900.14
4617688  STATEN ISLAND        NY    10309  SFD     8.125       7.859       $1,636.90   180      1-Sep-12    $170,000.00
4617808  HOLMDEL              NJ    07733  SFD     7.750       7.484       $2,983.85   180      1-Aug-12    $316,063.44
4617903  SAN ANTONIO          TX    78256  SFD     7.625       7.359       $3,232.09   180      1-Jul-12    $343,926.34
4618156  METAIRIE             LA    70006  SFD     7.500       7.234       $2,502.94   180      1-Aug-12    $269,184.56
4618226  EUGENE               OR    97405  SFD     7.500       7.234       $4,078.86   180      1-Aug-12    $438,507.53
4618421  EDEN PRAIRIE         MN    55346  SFD     7.625       7.359       $3,269.45   180      1-Aug-12    $348,954.51
4618520  DELLWOOD             MN    55110  SFD     7.500       7.234       $4,647.11   180      1-Jul-12    $498,262.57
4618662  GERMANTOWN           TN    38138  SFD     7.000       6.734       $2,085.29   180      1-Aug-12    $231,268.04
4618704  CHATHAM              NJ    07928  SFD     7.250       6.984       $2,142.04   180      1-Sep-12    $234,650.00
4618718  FORT MYERS           FL    33901  SFD     7.375       7.109       $2,281.41   180      1-Aug-12    $247,242.76
4618769  WAIMANALO            HI    96795  SFD     7.875       7.609       $4,552.56   180      1-Jul-12    $477,185.68
4618817  SALT LAKE CITY       UT    84105  SFD     7.625       7.359       $2,582.87   180      1-Aug-12    $275,674.06
4618994  GRAND JUNCTION       CO    81505  SFD     8.000       7.734       $2,580.27   180      1-Jul-12    $267,747.21
4619071  SPRINGDALE           AR    72764  SFD     7.375       7.109       $3,909.67   180      1-Aug-12    $423,702.31
4619405  WHITE BEAR LAKE      MN    55110  SFD     7.875       7.609       $2,200.41   180      1-Jul-12    $230,639.73
4619434  PHOENIX              AZ    85048  SFD     7.625       7.359       $2,615.57   180      1-Jul-12    $278,321.88
4619481  LIVONIA              MI    48152  SFD     8.125       7.859       $1,313.37   180      1-Aug-12    $136,010.17
4619618  ALPHARETTA           GA    30004  SFD     7.250       6.984       $2,738.59   180      1-Aug-12    $299,073.91
4619621  MERCER ISLAND        WA    98040  SFD     6.875       6.609       $3,790.39   180      1-Sep-12    $425,000.00
4619718  NORTH ANDOVER        MA    01845  SFD     6.875       6.609       $2,675.57   180      1-Sep-12    $300,000.00
4620093  CHESAPEAKE           VA    23322  SFD     7.500       7.234       $2,572.46   180      1-Aug-12    $276,661.92
4620350  INDIANAPOLIS         IN    46226  SFD     8.000       7.734       $3,822.61   180      1-Aug-12    $398,844.06
4620606  FLUSHING             NY    11366  SFD     7.125       6.859         $905.84   180      1-Sep-12    $100,000.00
4620761  HOUSTON              TX    77005  SFD     7.375       7.109       $3,311.73   180      1-Aug-12    $358,900.77
4620862  EUGENE               OR    97401  SFD     7.250       6.984       $2,190.88   180      1-Sep-12    $240,000.00
4621000  CLOSTER              NJ    07624  SFD     7.625       7.359       $4,740.71   180      1-Aug-12    $505,984.03
4621096  RIDGELAND            MS    39157  SFD     7.125       6.859       $2,183.05   180      1-Aug-12    $240,247.89
4621203  BIRMINGHAM           AL    35213  SFD     7.375       7.109       $4,139.65   180      1-Aug-12    $448,625.98
4621224  LOS ANGELES          CA    90024  LCO     7.875       7.609       $3,224.73   180      1-Aug-12    $339,006.25
4621263  LITTLE ROCK          AR    72211  SFD     7.375       7.109       $2,759.77   180      1-Aug-12    $299,083.98
4621862  DALLAS               TX    75248  SFD     7.500       7.234       $3,775.73   180      1-Aug-12    $406,069.90
4622026  DEAL                 NJ    07723  SFD     8.250       7.984       $2,910.43   180      1-Aug-12    $299,152.07
4622052  SEMINOLE             FL    33776  SFD     8.125       7.859         $962.89   180      1-Sep-12    $100,000.00
4622154  MAGNOLIA             TX    77355  SFD     7.250       6.984       $2,598.47   180      1-Sep-12    $284,650.00
4622501  ELLICOTT CITY        MD    21042  SFD     7.625       7.359       $2,099.93   180      1-Sep-12    $224,800.00
4622614  HOUSTON              TX    77024  SFD     7.375       7.109       $5,887.51   180      1-Sep-12    $640,000.00
4622867  COLUMBIA             SC    29223  SFD     7.375       7.109       $2,575.79   180      1-Sep-12    $280,000.00
4623425  HOUSTON              TX    77024  SFD     7.250       6.984       $3,418.68   180      1-Sep-12    $374,500.00
4623504  SAN RAMON            CA    94583  SFD     7.250       6.984       $2,282.16   180      1-Aug-12    $249,228.26
4623636  SANTA FE             NM    87501  SFD     7.500       7.234       $2,502.94   180      1-Sep-12    $270,000.00
4623693  AGOURA HILLS         CA    91301  PUD     7.375       7.109       $2,759.77   180      1-Aug-12    $299,083.98
4623714  DALLAS               TX    75230  SFD     7.750       7.484       $4,199.98   180      1-Sep-12    $446,200.00
4623777  TAMPA                FL    33609  SFD     6.875       6.609       $3,121.50   180      1-Sep-12    $350,000.00
4623813  GUNTERSVILLE         AL    35976  SFD     7.500       7.234       $3,309.43   180      1-Aug-12    $355,921.82
4624272  ADA                  MI    49301  SFD     7.375       7.109       $2,183.90   180      1-Aug-12    $236,675.12
4624302  SAN CLEMENTE         CA    92673  SFD     7.000       6.734       $1,977.43   180      1-Sep-12    $220,000.00
4624315  DALLAS               TX    75225  SFD     7.875       7.609       $3,426.28   180      1-Sep-12    $361,250.00
4624373  WILTON               CT    06897  SFD     6.625       6.359       $3,424.18   180      1-Sep-12    $390,000.00
4624708  MILPITAS             CA    95035  SFD     6.625       6.359       $2,633.99   180      1-Aug-12    $299,022.26
4624973  SALINAS              CA    93908  PUD     7.500       7.234       $2,498.30   180      1-Aug-12    $268,686.08
4625099  SCOTTSDALE           AZ    85255  SFD     7.250       6.984       $4,107.89   180      1-Aug-12    $448,610.86
4625180  GLENVIEW             IL    60025  SFD     7.500       7.234       $3,151.85   180      1-Aug-12    $338,873.15
4625334  LAKEWOOD             NJ    08701  SFD     7.500       7.234         $519.13   180      1-Sep-12     $56,000.00
4625702  EADS                 TN    38028  SFD     7.250       6.984       $2,860.92   180      1-Sep-12    $313,400.00
4626112  EDMOND               OK    73003  SFD     7.125       6.859       $2,264.58   180      1-Sep-12    $250,000.00
4626285  MONTGOMERY           TX    77356  SFD     7.250       6.984       $3,286.31   180      1-Aug-12    $358,888.69
4626352  CINCINNATI           OH    45243  SFD     7.000       6.734       $2,220.11   180      1-Aug-12    $246,220.72
4626430  SCOTTSDALE           AZ    85000  SFD     7.500       7.234       $2,187.75   180      1-Aug-12    $235,287.25
4626486  LAUREL               MD    20723  SFD     7.125       6.859       $2,164.04   180      1-Sep-12    $238,900.00
4626498  HEMET                CA    92544  SFD     7.750       7.484       $2,576.74   180      1-Aug-12    $272,941.23
4626808  FARMINGTON           CT    06032  SFD     7.500       7.234       $3,198.20   180      1-Sep-12    $345,000.00
4626991  GREENBURGH           NY    10706  SFD     7.500       7.234       $2,269.33   180      1-Sep-12    $244,800.00
4627685  FAYETTEVILLE         AR    72701  SFD     7.500       7.234       $2,454.27   180      1-Aug-12    $263,950.42
4627739  RIDGEFIELD           CT    06877  SFD     7.125       6.859       $2,264.58   180      1-Sep-12    $250,000.00
4628205  HOLLYWOOD            FL    33019  SFD     7.400       7.134       $2,411.15   180      1-Jun-12    $259,293.22
4628232  PALO ALTO            CA    94301  SFD     7.800       7.534       $3,162.88   180      1-Jul-12    $333,022.84
4628249  HOUSTON              TX    77079  LCO     7.550       7.284         $371.95   180      1-Jul-12     $39,758.68
4628273  GLENDALE             CA    91201  SFD     7.400       7.134       $1,041.12   180      1-Jun-12    $111,960.75
4628282  CARMICHAEL           CA    95608  SFD     7.550       7.284       $3,254.50   180      1-Jun-12    $346,822.84
4628300  ARGYLE               TX    76226  SFD     7.300       7.034       $2,856.94   180      1-Jul-12    $310,076.29
4628313  LOS OLIVOS           CA    93441  SFD     7.450       7.184       $2,851.08   180      1-Jul-12    $306,622.57
4628334  FALLBROOK            CA    92028  SFD     7.650       7.384         $837.33   180      1-Jun-12     $87,859.17
4628342  DALLAS               TX    75248  SFD     7.650       7.384       $1,684.01   180      1-Jun-12    $178,380.19
4628363  SUGAR LAND           TX    77479  SFD     7.950       7.684         $571.67   180      1-Jun-12     $59,474.02
4628370  STAMFORD             CT    06905  SFD     7.950       7.684       $4,067.37   180      1-Jul-12    $423,675.60
4628377  SUNNYVALE            CA    94087  SFD     7.050       6.784       $2,887.91   180      1-Jun-12    $317,263.79
4628383  HOUSTON              TX    77005  SFD     7.250       6.984       $4,221.08   180      1-Aug-12    $460,972.59
4628384  AUSTIN               TX    78758  SFD     7.600       7.334         $541.91   180      1-Jul-12     $57,751.02
4628519  PEMBROKE PINES       FL    33029  SFD     8.050       7.784         $239.64   180      1-Jun-12     $24,782.76
4628524  ORLANDO              FL    32828  SFD     8.650       8.384         $248.39   180      1-Jul-12     $24,863.15
4628532  OXNARD               CA    93030  LCO     7.850       7.584         $284.11   180      1-Jun-12     $29,734.70
4628539  CHATSWORTH           CA    91311  SFD     7.750       7.484       $1,620.88   180      1-Jun-12    $170,258.16
4628544  OCEANRIDGE           FL    33435  SFD     7.550       7.284       $2,324.64   180      1-Jul-12    $248,491.83
4628553  BOYNTON BEACH        FL    33435  SFD     8.000       7.734       $1,253.82   180      1-Jul-12    $130,439.17
4629196  SCOTTSDALE           AZ    85259  SFD     6.625       6.359       $3,424.18   180      1-Sep-12    $390,000.00
4629313  PORTSMOUTH           NH    03801  SFD     6.625       6.359       $2,107.19   180      1-Sep-12    $240,000.00
4629899  ACWORTH              GA    30101  SFD     7.375       7.109       $2,391.80   180      1-Aug-12    $259,206.12
4630140  ORANGE BEACH         AL    36561  SFD     7.375       7.109       $2,345.81   180      1-Sep-12    $255,000.00
4630171  RESTON               VA    22090  SFD     7.500       7.234       $2,595.64   180      1-Sep-12    $280,000.00
4630420  SUGAR LAND           TX    77479  SFD     7.125       6.859       $3,029.10   180      1-Aug-12    $333,356.40
4630598  BARRINGTON           IL    60010  SFD     6.875       6.609       $4,494.95   180      1-Sep-12    $504,000.00
4630683  ROCKVILLE            MD    20852  SFD     7.750       7.484       $2,193.17   180      1-Aug-12    $232,311.62
4630948  DOWNERS GROVE        IL    60515  SFD     7.750       7.484       $2,127.28   180      1-Aug-12    $225,299.27
4631026  SARATOGA             CA    95070  SFD     6.875       6.609       $4,352.25   180      1-Sep-12    $488,000.00
4631270  ANAHEIM              CA    92808  SFD     7.625       7.359       $2,727.66   180      1-Aug-12    $291,127.76
4631287  SANIBEL              FL    33957  SFD     7.625       7.359       $2,849.10   180      1-Sep-12    $305,000.00
4631555  CLOSTER              NJ    07624  SFD     7.375       7.109       $2,023.84   180      1-Sep-12    $220,000.00
4632267  BIXBY                OK    74008  SFD     7.500       7.234       $2,405.13   180      1-Aug-12    $258,385.77
4632464  SAN ANTONIO          TX    78248  SFD     7.250       6.984       $2,688.84   180      1-Sep-12    $294,550.00
4632782  ORINDA               CA    94563  LCO     7.550       7.284         $604.41   180      1-Jul-12     $64,607.87
4632793  MURRIETA             CA    92562  SFD     7.750       7.484       $2,823.83   180      1-Jul-12    $298,221.62
4632810  SAN DIEGO            CA    92130  SFD     7.050       6.784       $2,551.61   180      1-Aug-12    $282,111.02
4632827  DUNEDIN              FL    34698  SFD     7.750       7.484         $282.39   180      1-Aug-12     $29,911.36
4632834  SAN FRANCISCO        CA    94115  LCO     7.150       6.884       $3,266.05   180      1-Aug-12    $358,878.95
4632838  VENTURA              CA    93004  SFD     7.350       7.084       $2,351.39   180      1-Aug-12    $255,216.61
4632840  MONTE SERENO         CA    95030  SFD     7.750       7.484       $5,647.66   180      1-Aug-12    $598,227.34
4632849  PLANO                TX    75093  SFD     6.375       6.109       $4,658.31   180      1-Sep-12    $539,000.00
4632854  MIAMI                FL    33134  SFD     7.600       7.334         $652.90   180      1-Aug-12     $69,790.44
4632864  SUNNYVALE            CA    94087  SFD     7.400       7.134       $3,132.56   180      1-Jul-12    $337,921.83
4632867  REGO PARK            NY    11374  SFD     7.700       7.434       $1,876.83   180      1-Aug-12    $199,406.51
4632892  COLLEYVILLE          TX    76034  SFD     7.400       7.134       $2,203.85   180      1-Aug-12    $238,471.22
4632894  GLENDALE             CA    91208  SFD     7.300       7.034       $2,682.96   180      1-Jul-12    $291,193.44
4632895  LAKE VILLA           IL    60046  SFD     7.750       7.484         $611.83   180      1-Aug-12     $64,807.97
4632905  SCARSDALE            NY    10583  SFD     7.750       7.484       $3,576.85   180      1-Jul-12    $377,747.39
4632906  SANTA MONICA         CA    90405  SFD     7.650       7.384       $1,964.67   180      1-Jul-12    $208,744.17
4632914  IRVING               TX    75063  SFD     7.500       7.234         $361.54   180      1-Aug-12     $38,882.21
4632921  SAN JOSE             CA    95138  SFD     6.850       6.584       $2,429.19   180      1-Jul-12    $271,051.11
4632933  HOUSTON              TX    77092  SFD     7.700       7.434         $365.99   180      1-Jul-12     $38,767.78
4632948  OLD BROOKVILLE       NY    11545  SFD     7.500       7.234       $4,635.07   180      1-Aug-12    $498,489.93
4632955  WHITEHOUSE STATIO   NNJ    08889  SFD     7.250       6.984       $2,282.16   180      1-Sep-12    $250,000.00
4632990  JACKSONVILLE         FL    32259  SFD     7.875       7.609       $2,845.35   180      1-Jun-12    $297,352.91
4633187  ALPHARETTA           GA    30201  SFD     7.500       7.234       $2,317.53   180      1-Sep-12    $250,000.00
4633317  PEBBLE BEACH         CA    93953  SFD     7.375       7.109       $2,520.59   180      1-Sep-12    $274,000.00
4634266  ROLLING HILLS EST   ACA    90274  SFD     6.750       6.484       $4,070.59   180      1-Sep-12    $460,000.00
4634414  HINGHAM              MA    02043  SFD     7.625       7.359       $2,837.42   180      1-Sep-12    $303,750.00
4636262  NASHVILLE            TN    37205  SFD     7.375       7.109       $2,566.59   180      1-Sep-12    $279,000.00
4638542  SALT LAKE CITY       UT    84109  SFD     7.500       7.234       $2,085.78   180      1-Sep-12    $225,000.00
4639026  CHERRY HILL          NJ    08003  PUD     8.125       7.859         $481.44   180      1-Aug-12     $49,857.11
4641677  POST FALLS           ID    83854  SFD     7.250       6.984       $3,132.49   180      1-Sep-12    $343,150.00
4642566  FREDERICK            MD    21702  SFD     7.250       6.984       $2,195.90   180      1-Sep-12    $240,550.00
6354558  KAILUA-KONA          HI    96740  SFD     7.625       7.359       $3,736.52   180      1-Jul-12    $397,602.70
6360261  PRINCETON            NJ    08540  SFD     7.125       6.859       $2,808.08   180      1-Aug-12    $309,032.55
6404593  CASTLE ROCK          CO    80104  SFD     7.875       7.609       $3,201.02   180      1-Jul-12    $335,521.17
6452560  CHARLOTTE            NC    28211  SFD     7.500       7.234       $2,540.01   180      1-Aug-12    $273,172.49
                                                                                            
                                                                                             $110,150,197.01
</TABLE>

COUNT:                 395
WAC:                     7.517846622
WAM:                   178.126927
WALTV:                  68.33780798

<TABLE>
<CAPTION>


MORTGAGE                                                            MORTGAGE           T.O.P.     MASTER
LOAN                               ZIP   PROPERTY                   INSURANCE SERVICE  MORTGAGE   SERVICE
NUMBER      CITY           STATE   CODE  TYPE      LTV     SUBSIDY  CODE      FEE      LOAN       FEE
- ------      ----           -----   ----  ----      ---     -------  ----      ---      ----       ---
<S>      <C>                  <C>   <C>    <C>     <C>      <C>     <C>         <C>    <C>         <C>

4505819  ESKO                 MN    55733  SFD     65.57                        0.250              0.016
4506243  TAKOMA PARK          MD    20912  SFD     75.04                        0.250              0.016
4507250  ROSWELL              GA    30075  SFD     75.30                        0.250              0.016
4511199  BELLEVUE             WA    98006  SFD     80.00    GD 5YR              0.250              0.016
4545629  FAIRFAX STATION      VA    22039  SFD     65.41                        0.250              0.016
4549574  KENSINGTON           MD    20895  SFD     69.94                        0.250              0.016
4554008  SPARKS               NV    89436  SFD     79.21                        0.250              0.016
4565149  EDMOND               OK    73034  SFD     84.99                11      0.250              0.016
4565658  OMAHA                NE    68118  SFD     63.56                        0.250              0.016
4566260  KETCHUM              ID    83340  SFD     37.94                        0.250              0.016
4567937  CINCINNATI           OH    45208  SFD     90.00                13      0.250              0.016
4568781  WESTHAMPTON          NY    11977  LCO     59.72                        0.250              0.016
4569113  WOODSTOCK            GA    30189  SFD     84.53                        0.250              0.016
4569922  SUGAR LAND           TX    77479  SFD     90.00                06      0.250              0.016
4571078  ALEXANDRIA           KY    41001  SFD     35.09                        0.250              0.016
4571207  WALNUT CREEK         CA    94598  SFD     51.67                        0.250              0.016
4572878  FAIRFAX              VA    22033  SFD     57.24    GD 6YR              0.250              0.016
4576248  MORRIS PLAINS        NJ    07950  SFD     65.71                        0.250              0.016
4577175  BROOKLYN             NY    11234  SFD     90.00    FX15YR      06      0.250              0.016
4577728  SAN MATEO            CA    94402  HCO     80.00                        0.250              0.016
4578392  FRISCO               TX    75034  SFD     80.00                        0.250              0.016
4579182  CARY                 NC    27513  SFD     63.21                        0.250              0.016
4579417  WEST BLOOMFIELD      MI    48322  SFD     80.00                        0.250              0.016
4579456  GRANADA HILLS        CA    91344  LCO     80.00                        0.250              0.016
4579768  RICHMOND             VA    23233  SFD     65.61                        0.250              0.016
4580512  ATLANTA              GA    30327  SFD     33.33                        0.250              0.016
4581331  ENGLEWOOD            CO    80111  SFD     66.67                        0.250              0.016
4581654  ATLANTA              GA    30327  SFD     69.02                        0.250              0.016
4582694  LAGUNA NIGUEL        CA    92677  SFD     79.91    GD 3YR              0.250              0.016
4582874  DALLAS               TX    75240  SFD     95.00                06      0.250              0.016
4582924  MOUNTAIN LAKES       NJ    07046  SFD     69.33                        0.250              0.016
4583237  BARDONIA             NY    10954  SFD     80.00                        0.250              0.016
4584379  CARMEL               IN    46032  SFD     52.90    GD 3YR              0.250              0.016
4584716  ALPHARETTA           GA    30202  SFD     56.36    GD 4YR              0.250              0.016
4585619  HOUSTON              TX    77069  SFD     77.49                        0.250              0.016
4585670  SOUTHOLD             NY    11971  SFD     80.00                        0.250              0.016
4585909  SONOMA               CA    95476  PUD     74.99                        0.250              0.016
4586108  BROOKLYN             NY    11230  SFD     80.00                        0.250              0.016
4586239  FRESNO               CA    93720  SFD     80.00                        0.250              0.016
4586538  HERNDON              VA    22071  SFD     80.00                        0.250              0.016
4586775  CINCINNATI           OH    45242  SFD     89.75                        0.250              0.016
4586790  HATTIESBURG          MS    39402  SFD     80.00                        0.250              0.016
4586948  HOUSTON              TX    77082  SFD     30.49                        0.250              0.016
4587334  BIRMINGHAM           AL    35244  SFD     80.00                        0.250              0.016
4587795  RIDGWAY              CO    81432  SFD     46.15                        0.250              0.016
4589443  LOS ANGELES          CA    90049  LCO     60.11    GD 3YR              0.250              0.016
4589514  SEASIDE              OR    97138  SFD     70.00                        0.250              0.016
4589556  PORT JEFFERSON       NY    11777  LCO     79.97                        0.250              0.016
4589577  PENN VALLEY          PA    19072  SFD     53.76                        0.250              0.016
4589898  PALMETTO             FL    34221  HCO     70.00                        0.250              0.016
4589919  HOUSTON              TX    77056  SFD     70.50                        0.250              0.016
4589937  PROVIDENCE           RI    02906  SFD     63.83                        0.250              0.016
4589976  WOODSTOCK            GA    30189  SFD     50.51                        0.250              0.016
4590018  BERNARDS TWNSHP      NJ    07931  SFD     64.29                        0.250              0.016
4590331  WHEATON              IL    60187  SFD     68.94                        0.250              0.016
4590332  CINCINNATI           OH    45201  SFD     74.01                        0.250              0.016
4590441  SCARSDALE            NY    10583  SFD     80.00                        0.250              0.016
4590657  BELLPORT             NY    11713  SFD     64.52                        0.250              0.016
4590695  ALEXANDRIA           VA    22307  SFD     80.00                        0.250              0.016
4590848  GARDEN CITY SOUTH    NY    11530  SFD     75.00                        0.250              0.016
4590863  BROOKLINE            MA    02146  SFD     51.95                        0.250              0.016
4591488  DALLAS               TX    75219  SFD     69.74                        0.250              0.016
4591595  ATLANTA              GA    30328  SFD     50.00                        0.250              0.016
4591659  MAMARONECK           NY    10543  SFD     88.89                06      0.250              0.016
4591720  BAYSIDE              NY    11361  SFD     76.96                        0.250              0.016
4592054  MONTAUK              NY    11954  LCO     75.00                        0.250              0.016
4592165  FAIRPORT             NY    14450  SFD     80.00                        0.250              0.016
4592255  SEWICKLEY            PA    15143  SFD     52.44                        0.250              0.016
4593335  EUGENE               OR    97408  SFD     68.61                        0.250              0.016
4593656  KNOXVILLE            TN    37922  SFD     73.44                        0.250              0.016
4594762  SIMSBURY             CT    06070  SFD     74.63                        0.250              0.016
4594927  PARK CITY            UT    84060  LCO     75.00                        0.250              0.016
4595406  YARDLEY              PA    19067  SFD     79.99                        0.250              0.016
4595874  NEWPORT COAST        CA    92657  LCO     80.00                        0.250              0.016
4596217  SAYREVILLE           NJ    08872  SFD     78.95                        0.250              0.016
4596306  SAN RAFAEL           CA    94901  SFD     68.18                        0.250              0.016
4596329  BOCA RATON           FL    33431  PUD     64.66                        0.250              0.016
4596420  BRIDGEWATER          NJ    08807  LCO     68.21                        0.250              0.016
4596471  DUNN LORING          VA    22027  SFD     63.53                        0.250              0.016
4596492  FOLSOM               CA    95630  SFD     64.94                        0.250              0.016
4596495  ORANGEVALE           CA    95662  SFD     64.30                        0.250              0.016
4596561  VICTOR               NY    14564  SFD     80.00                        0.250              0.016
4596617  LITTLE ROCK          AR    72205  SFD     80.00                        0.250              0.016
4596812  UNION                NJ    07083  SFD     75.00                        0.250              0.016
4597047  AURORA               CO    80016  SFD     74.93                        0.250              0.016
4597113  WESTON               CT    06883  SFD     59.14                        0.250              0.016
4597149  WESTON               FL    33326  SFD     77.40                        0.250              0.016
4597152  NAPLES               FL    34102  SFD     74.99                        0.250              0.016
4597166  DEERFIELD BEACH      FL    33442  PUD     75.00                        0.250              0.016
4597176  BOCA RATON           FL    33496  SFD     60.00                        0.250              0.016
4597240  DELRAY BEACH         FL    33483  SFD     80.00                        0.250              0.016
4597669  LOS ANGELES          CA    90025  SFD     57.75                        0.250              0.016
4597861  PLANO                TX    75093  SFD     70.17                        0.250              0.016
4598044  WASHINGTON           DC    20016  SFD     36.06                        0.250              0.016
4598081  JERICHO              NY    11753  SFD     75.00                        0.250              0.016
4598089  VIRGINIA BEACH       VA    23454  SFD     67.50                        0.250              0.016
4598159  NORTH MANKATO        MN    56003  SFD     79.50                        0.250              0.016
4598473  JONESBORO            AR    72401  SFD     60.28                        0.250              0.016
4598503  MATAIRIE             LA    70005  SFD     80.00                        0.250              0.016
4598574  COLORADO SPRINGS     CO    80906  SFD     66.27                        0.250              0.016
4598585  VIRGINIA BEACH       VA    23454  SFD     59.52                        0.250              0.016
4598633  SCARSDALE            NY    10583  THS     75.00                        0.250              0.016
4598775  HOUSTON              TX    77094  SFD     79.25                        0.250              0.016
4599015  PLAINVIEW            NY    11803  SFD     47.09                        0.250              0.016
4599085  CORPUS CHRISTI       TX    78413  SFD     80.00                        0.250              0.016
4599414  SACRAMENTO           CA    95816  SFD     59.26                        0.250              0.016
4599449  KEY WEST             FL    33040  SFD     80.00                        0.250              0.016
4599794  NEW YORK             NY    10023  HCO     58.44                        0.250              0.016
4599949  EAST ORLEANS         MA    02643  SFD     41.17                        0.250              0.016
4600100  HINGHAM              MA    02043  SFD     55.65                        0.250              0.016
4600490  SCOTTSDALE           AZ    85255  SFD     74.53                        0.250              0.016
4600597  REDMOND              WA    98052  SFD     90.00                12      0.250              0.016
4600728  HO HO KUS            NJ    07423  SFD     79.37                        0.250              0.016
4600760  LUTZ                 FL    33549  SFD     70.77                        0.250              0.016
4600831  SCOTCH PLAINS        NJ    07076  SFD     69.55                        0.250              0.016
4600875  ORADELL              NJ    07649  SFD     47.25                        0.250              0.016
4601042  BRENTWOOD            TN    37027  SFD     84.62                12      0.250              0.016
4601179  OSSINING             NY    10562  SFD     72.07                        0.250              0.016
4601268  FLORA                MS    39071  SFD     58.11                        0.250              0.016
4601281  TONKA BAY            MN    55331  SFD     66.67                        0.250              0.016
4601341  LIBERTYVILLE         IL    60048  SFD     38.71                        0.250              0.016
4601442  ENGLEWOOD            NJ    07632  SFD     79.27                        0.250              0.016
4601596  LONG BEACH           NY    11561  SFD     69.52                        0.250              0.016
4601731  ESSEX FELLS          NJ    07021  SFD     80.00                        0.250              0.016
4601782  RICHFIELD            OH    44286  SFD     77.45                        0.250              0.016
4601786  PORTLAND             OR    97229  SFD     75.00                        0.250              0.016
4602182  ROCHESTER            MN    55901  SFD     79.99                        0.250              0.016
4602196  STRATHAM             NH    03885  SFD     71.43                        0.250              0.016
4602270  FRANKLIN             TN    37064  SFD     75.06                        0.250              0.016
4602321  KATY                 TX    77450  SFD     69.99                        0.250              0.016
4602396  ATLANTA              GA    30327  SFD     51.11                        0.250              0.016
4602411  CORDELE              GA    31015  SFD     70.24                        0.250              0.016
4602423  WILLIAMSBURG         VA    23185  SFD     69.23                        0.250              0.016
4602863  REHOBOTH             DE    19971  SFD     38.81                        0.250              0.016
4603006  HATTERAS             NC    27943  SFD     52.29                        0.250              0.016
4603439  WESTERVILLE          OH    43082  SFD     69.46                        0.250              0.016
4603461  CORDELE              GA    31015  SFD     80.00                        0.250              0.016
4603692  NOVI                 MI    48167  SFD     69.23                        0.250              0.016
4603710  NAPLES               FL    34119  SFD     90.00                12      0.250              0.016
4603763  BAKERSFIELD          CA    93309  SFD     67.35                        0.250              0.016
4603773  MORGAN HILL          CA    95037  SFD     57.35                        0.250              0.016
4603777  SANTA ROSA           CA    95404  SFD     61.54                        0.250              0.016
4603780  BURBANK              CA    91505  SFD     73.68                        0.250              0.016
4603790  CENTEREACH           NY    11720  SFD     34.78                        0.250              0.016
4603801  SHORE ACRES          TX    77571  SFD     74.95                        0.250              0.016
4603811  SYOSSET              NY    11791  SFD     54.65                        0.250              0.016
4603821  NAPLES               FL    33963  LCO     42.75                        0.250              0.016
4603843  TEMPLE CITY          CA    91780  SFD     34.88                        0.250              0.016
4603986  SAN JOSE             CA    95125  SFD     58.82                        0.250              0.016
4604056  OAK RIDGE            TN    37830  SFD     80.00                        0.250              0.016
4604094  PALOS VERDES ESTA   TCA    90274  SFD     38.19                        0.250              0.016
4604102  COLD SPRING HARBO   RNY    11724  SFD     80.00                        0.250              0.016
4604305  PLANO                TX    75093  SFD     75.68                        0.250              0.016
4604358  PLYMOUTH             MN    55446  SFD     56.82                        0.250              0.016
4604409  SYOSSET              NY    11791  SFD     55.07                        0.250              0.016
4604424  BETHESDA             MD    20816  SFD     40.00                        0.250              0.016
4604481  PHOENIXVILLE         PA    19460  SFD     74.65                        0.250              0.016
4604809  CHAGRIN FALLS        OH    44023  SFD     51.06                        0.250              0.016
4604816  MOORPARK             CA    93021  SFD     90.00                06      0.250              0.016
4604987  MORRIS TOWNSHIP      NJ    07960  SFD     75.00                        0.250              0.016
4605029  CHATSWORTH           CA    91311  SFD     80.00                        0.250              0.016
4605204  STATEN ISLAND        NY    10312  SFD     80.00                        0.250              0.016
4605245  UPPER MAKEFIELD      PA    18940  SFD     40.28                        0.250              0.016
4605257  EDMOND               OK    73034  SFD     79.29                        0.250              0.016
4605540  CHESTERFIELD         MO    63017  SFD     78.99                        0.250              0.016
4605582  NEW YORK             NY    10007  SFD     62.50                        0.250              0.016
4605772  MORAGA               CA    94556  SFD     39.86                        0.250              0.016
4606035  UNION                NJ    07083  SFD     68.69                        0.250              0.016
4606060  AUSTIN               TX    78730  SFD     56.82                        0.250              0.016
4606219  SAN JOSE             CA    95148  SFD     74.97                        0.250              0.016
4606261  COLUMBUS             OH    43220  SFD     55.31                        0.250              0.016
4606274  ATLANTIC BEACH       NY    11509  SFD     50.29                        0.250              0.016
4606704  DALLAS               TX    75248  SFD     80.92                        0.250              0.016
4606821  MARINA DEL REY       CA    90292  LCO     65.52                        0.250              0.016
4606980  WOODSTOCK            GA    30189  SFD     78.97                        0.250              0.016
4607018  SCOTTSDALE           AZ    85259  SFD     80.00                        0.250              0.016
4607134  ALPHARETTA           GA    30202  SFD     62.50                        0.250              0.016
4607188  CLIVE                IA    50325  SFD     80.00                        0.250              0.016
4607322  MARIETTA             GA    30067  SFD     56.49                        0.250              0.016
4607384  BATESVILLE           IN    47006  SFD     95.00                        0.250              0.016
4607752  MOULTONBOROUGH       NH    03254  SFD     75.83                        0.250              0.016
4607890  LEAWOOD              KS    66213  SFD     60.78    GD 4YR              0.250              0.016
4608073  GRANTS PASS          OR    97526  SFD     80.00                        0.250              0.016
4608177  COLLEYVILLE          TX    76034  SFD     66.27                        0.250              0.016
4608276  UPPER MONTCLAIR      NJ    07043  SFD     61.64                        0.250              0.016
4608305  DUBLIN               OH    43016  SFD     55.29                        0.250              0.016
4608334  OVERLAND PARK        KS    66221  SFD     79.74                        0.250              0.016
4608355  GREER                SC    29651  SFD     80.00                        0.250              0.016
4608514  WAYNE TOWNSHIP       NJ    07470  SFD     74.07                        0.250              0.016
4608749  MOUNT VERNON         WA    98273  SFD     71.43                        0.250              0.016
4608928  SURING               WI    54174  SFD     52.24                        0.250              0.016
4608939  SPRING               TX    77379  SFD     70.00                        0.250              0.016
4608946  CHATSWORTH           CA    91311  SFD     42.37                        0.250              0.016
4609089  ROGERS               AR    72758  SFD     54.94                        0.250              0.016
4609240  ROSWELL              GA    30075  SFD     64.10                        0.250              0.016
4609322  MEDFORD              OR    97501  SFD     90.00                11      0.250              0.016
4609354  CARMEL               IN    46032  SFD     76.86                        0.250              0.016
4609362  STAMFORD             CT    06903  SFD     56.50                        0.250              0.016
4609628  HAMMOND              IN    46323  SFD     67.74                        0.250              0.016
4609724  SAN JOSE             CA    95136  SFD     90.00                        0.250              0.016
4609826  SALINAS              CA    93908  SFD     62.80                        0.250              0.016
4609924  WHITTIER             CA    90603  SFD     79.10                        0.250              0.016
4609998  LAS VEGAS            NV    89134  SFD     68.89                        0.250              0.016
4610257  ANAHEIM              CA    92807  PUD     90.00                06      0.250              0.016
4610270  MARSHALL             VA    20115  SFD     71.43                        0.250              0.016
4610276  AFTON                OK    74331  SFD     55.30                        0.250              0.016
4610362  ALPHARETTA           GA    30005  SFD     57.47                        0.250              0.016
4610367  HOLLIS               NH    03049  SFD     80.00                        0.250              0.016
4610373  NASHVILLE            TN    37215  SFD     80.00                        0.250              0.016
4610476  WASHINGTON           DC    20007  THS     77.04                        0.250              0.016
4610562  PALOS VERDES ESTA   TCA    90274  SFD     59.11                        0.250              0.016
4610583  SANTA BARBARA        CA    93103  SFD     62.71                        0.250              0.016
4611077  BRYN MAWR            PA    19010  SFD     55.87                        0.250              0.016
4611118  SOLON                OH    44139  SFD     54.02                        0.250              0.016
4611145  CINCINNATI           OH    45237  SFD     69.70                        0.250              0.016
4611222  ALHAMBRA             CA    91801  LCO     69.74                        0.250              0.016
4611242  MATTITUCK            NY    11952  SFD     64.52                        0.250              0.016
4611258  SOUTHAMPTON          NY    11968  SFD     59.59                        0.250              0.016
4611285  CARY                 NC    27511  SFD     59.02                        0.250              0.016
4611595  SAN FRANCISCO        CA    94131  SFD     63.52                        0.250              0.016
4611659  MERCER ISLAND        WA    98040  SFD     80.00                        0.250              0.016
4611811  LIMA                 OH    45805  SFD     80.00                        0.250              0.016
4611883  COPPELL              TX    75019  SFD     89.99                        0.250              0.016
4611887  WHEELING             WV    26003  SFD     76.67                        0.250              0.016
4611949  LITTLE ROCK          AR    72205  SFD     79.99                        0.250              0.016
4612585  ISLAMORADA           FL    33036  SFD     51.58                        0.250              0.016
4612863  DEFIANCE             MO    63341  SFD     88.60                01      0.250              0.016
4612964  SANTA ROSA           CA    95409  SFD     75.00                        0.250              0.016
4613173  FORT WORTH           TX    76107  SFD     66.52                        0.250              0.016
4613398  PLEASANT VIEW        UT    84414  SFD     69.90                        0.250              0.016
4613572  NEW ORLEANS          LA    70127  SFD     71.43                        0.250              0.016
4613773  BLOOMFIELD HILLS     MI    48301  SFD     67.08                        0.250              0.016
4613829  COVINGTON            LA    70433  SFD     71.05                        0.250              0.016
4613958  LEOMINSTER           MA    01453  SFD     73.33                        0.250              0.016
4613992  ROCIADA              NM    87742  SFD     60.88                        0.250              0.016
4614019  HACKETTSTOWN         NJ    07846  SFD     79.10                        0.250              0.016
4614051  ATLANTA              GA    30307  SFD     58.47                        0.250              0.016
4614146  GALENA               MO    65656  SFD     90.00                13      0.250              0.016
4614187  RICHMOND             VA    23233  SFD     50.47                        0.250              0.016
4614298  INDIANAPOLIS         IN    46256  SFD     55.95    GD 2YR              0.250              0.016
4614462  REDWOOD CITY         CA    94061  SFD     55.16                        0.250              0.016
4614635  BELLAIRE             TX    77401  SFD     80.00                        0.250              0.016
4614736  NEWPORT BEACH        CA    92660  PUD     75.00                        0.250              0.016
4614867  IDAHO FALLS          ID    83406  SFD     62.22                        0.250              0.016
4614892  LOS ALTOS            CA    94022  SFD     45.41                        0.250              0.016
4614919  WALNUT CREEK         CA    94596  SFD     88.92                06      0.250              0.016
4614981  LONG GROVE           IL    60047  SFD     78.65                        0.250              0.016
4615088  OLD TAPPAN           NJ    07675  SFD     77.37                        0.250              0.016
4615509  ROCKVILLE            MD    20850  PUD     69.77                        0.250              0.016
4615649  SYOSSET              NY    11791  SFD     80.00                        0.250              0.016
4615733  SEATTLE              WA    98105  SFD     49.84                        0.250              0.016
4615871  BRASELTON            GA    30517  SFD     70.00                        0.250              0.016
4616062  ALPHARETTA           GA    30201  SFD     80.00                        0.250              0.016
4616478  MIDLOTHIAN           VA    23112  SFD     79.93                        0.250              0.016
4616619  SCOTTSDALE           AZ    85250  SFD     79.99                        0.250              0.016
4616972  HOUSTON              TX    77024  SFD     52.63                        0.250              0.016
4617014  DOWNINGTOWN          PA    19335  SFD     80.00                        0.250              0.016
4617075  LAKE FOREST          CA    92630  PUD     89.96                        0.250              0.016
4617209  SAN ANTONIO          TX    78212  SFD     70.00                        0.250              0.016
4617362  SPOKANE              WA    99223  SFD     64.39                        0.250              0.016
4617541  BRENTWOOD            TN    37027  SFD     80.00                        0.250              0.016
4617688  STATEN ISLAND        NY    10309  SFD     49.28                        0.250              0.016
4617808  HOLMDEL              NJ    07733  SFD     79.85                        0.250              0.016
4617903  SAN ANTONIO          TX    78256  SFD     72.08                        0.250              0.016
4618156  METAIRIE             LA    70006  SFD     90.00                06      0.250              0.016
4618226  EUGENE               OR    97405  SFD     80.00                        0.250              0.016
4618421  EDEN PRAIRIE         MN    55346  SFD     61.40                        0.250              0.016
4618520  DELLWOOD             MN    55110  SFD     75.00                        0.250              0.016
4618662  GERMANTOWN           TN    38138  SFD     80.00                        0.250              0.016
4618704  CHATHAM              NJ    07928  SFD     65.00                        0.250              0.016
4618718  FORT MYERS           FL    33901  SFD     80.00                        0.250              0.016
4618769  WAIMANALO            HI    96795  SFD     77.42                        0.250              0.016
4618817  SALT LAKE CITY       UT    84105  SFD     46.08                        0.250              0.016
4618994  GRAND JUNCTION       CO    81505  SFD     49.54                        0.250              0.016
4619071  SPRINGDALE           AR    72764  SFD     56.67                        0.250              0.016
4619405  WHITE BEAR LAKE      MN    55110  SFD     77.33                        0.250              0.016
4619434  PHOENIX              AZ    85048  SFD     53.33                        0.250              0.016
4619481  LIVONIA              MI    48152  SFD     80.00                        0.250              0.016
4619618  ALPHARETTA           GA    30004  SFD     66.67                        0.250              0.016
4619621  MERCER ISLAND        WA    98040  SFD     68.00                        0.250              0.016
4619718  NORTH ANDOVER        MA    01845  SFD     66.23                        0.250              0.016
4620093  CHESAPEAKE           VA    23322  SFD     75.00                        0.250              0.016
4620350  INDIANAPOLIS         IN    46226  SFD     69.58                        0.250              0.016
4620606  FLUSHING             NY    11366  SFD     35.71                        0.250              0.016
4620761  HOUSTON              TX    77005  SFD     80.00                        0.250              0.016
4620862  EUGENE               OR    97401  SFD     77.67                        0.250              0.016
4621000  CLOSTER              NJ    07624  SFD     70.00                        0.250              0.016
4621096  RIDGELAND            MS    39157  SFD     70.67                        0.250              0.016
4621203  BIRMINGHAM           AL    35213  SFD     48.91                        0.250              0.016
4621224  LOS ANGELES          CA    90024  LCO     80.00                        0.250              0.016
4621263  LITTLE ROCK          AR    72211  SFD     52.63                        0.250              0.016
4621862  DALLAS               TX    75248  SFD     80.00                        0.250              0.016
4622026  DEAL                 NJ    07723  SFD     50.00                        0.250              0.016
4622052  SEMINOLE             FL    33776  SFD     45.45                        0.250              0.016
4622154  MAGNOLIA             TX    77355  SFD     95.00                        0.250              0.016
4622501  ELLICOTT CITY        MD    21042  SFD     80.00                        0.250              0.016
4622614  HOUSTON              TX    77024  SFD     53.56                        0.250              0.016
4622867  COLUMBIA             SC    29223  SFD     80.00                        0.250              0.016
4623425  HOUSTON              TX    77024  SFD     70.00                        0.250              0.016
4623504  SAN RAMON            CA    94583  SFD     75.30                        0.250              0.016
4623636  SANTA FE             NM    87501  SFD     77.14                        0.250              0.016
4623693  AGOURA HILLS         CA    91301  PUD     75.95                        0.250              0.016
4623714  DALLAS               TX    75230  SFD     65.62                        0.250              0.016
4623777  TAMPA                FL    33609  SFD     80.00                        0.250              0.016
4623813  GUNTERSVILLE         AL    35976  SFD     75.00                        0.250              0.016
4624272  ADA                  MI    49301  SFD     69.99                        0.250              0.016
4624302  SAN CLEMENTE         CA    92673  SFD     70.29                        0.250              0.016
4624315  DALLAS               TX    75225  SFD     66.90                        0.250              0.016
4624373  WILTON               CT    06897  SFD     50.00                        0.250              0.016
4624708  MILPITAS             CA    95035  SFD     62.38                        0.250              0.016
4624973  SALINAS              CA    93908  PUD     61.95                        0.250              0.016
4625099  SCOTTSDALE           AZ    85255  SFD     60.40                        0.250              0.016
4625180  GLENVIEW             IL    60025  SFD     59.96                        0.250              0.016
4625334  LAKEWOOD             NJ    08701  SFD     62.22                        0.250              0.016
4625702  EADS                 TN    38028  SFD     63.96                        0.250              0.016
4626112  EDMOND               OK    73003  SFD     50.00                        0.250              0.016
4626285  MONTGOMERY           TX    77356  SFD     80.00                        0.250              0.016
4626352  CINCINNATI           OH    45243  SFD     50.61                        0.250              0.016
4626430  SCOTTSDALE           AZ    85000  SFD     79.99                        0.250              0.016
4626486  LAUREL               MD    20723  SFD     77.06                        0.250              0.016
4626498  HEMET                CA    92544  SFD     68.44                        0.250              0.016
4626808  FARMINGTON           CT    06032  SFD     69.70                        0.250              0.016
4626991  GREENBURGH           NY    10706  SFD     80.00                        0.250              0.016
4627685  FAYETTEVILLE         AR    72701  SFD     75.00                        0.250              0.016
4627739  RIDGEFIELD           CT    06877  SFD     51.33                        0.250              0.016
4628205  HOLLYWOOD            FL    33019  SFD     79.30                        0.250              0.016
4628232  PALO ALTO            CA    94301  SFD     51.54                        0.250              0.016
4628249  HOUSTON              TX    77079  LCO     44.44                        0.250              0.016
4628273  GLENDALE             CA    91201  SFD     50.00                        0.250              0.016
4628282  CARMICHAEL           CA    95608  SFD     50.00                        0.250              0.016
4628300  ARGYLE               TX    76226  SFD     80.00                        0.250              0.016
4628313  LOS OLIVOS           CA    93441  SFD     74.34                        0.250              0.016
4628334  FALLBROOK            CA    92028  SFD     64.16                        0.250              0.016
4628342  DALLAS               TX    75248  SFD     75.00                        0.250              0.016
4628363  SUGAR LAND           TX    77479  SFD     34.29                        0.250              0.016
4628370  STAMFORD             CT    06905  SFD     69.98                        0.250              0.016
4628377  SUNNYVALE            CA    94087  SFD     69.48                        0.250              0.016
4628383  HOUSTON              TX    77005  SFD     80.00                        0.250              0.016
4628384  AUSTIN               TX    78758  SFD     71.73                        0.250              0.016
4628519  PEMBROKE PINES       FL    33029  SFD     21.74                        0.250              0.016
4628524  ORLANDO              FL    32828  SFD     62.50                        0.250              0.016
4628532  OXNARD               CA    93030  LCO     35.29                        0.250              0.016
4628539  CHATSWORTH           CA    91311  SFD     64.98                        0.250              0.016
4628544  OCEANRIDGE           FL    33435  SFD     50.75                        0.250              0.016
4628553  BOYNTON BEACH        FL    33435  SFD     74.97                        0.250              0.016
4629196  SCOTTSDALE           AZ    85259  SFD     79.59                        0.250              0.016
4629313  PORTSMOUTH           NH    03801  SFD     75.00                        0.250              0.016
4629899  ACWORTH              GA    30101  SFD     65.00                        0.250              0.016
4630140  ORANGE BEACH         AL    36561  SFD     44.74                        0.250              0.016
4630171  RESTON               VA    22090  SFD     50.00                        0.250              0.016
4630420  SUGAR LAND           TX    77479  SFD     80.00                        0.250              0.016
4630598  BARRINGTON           IL    60010  SFD     80.00                        0.250              0.016
4630683  ROCKVILLE            MD    20852  SFD     75.90                        0.250              0.016
4630948  DOWNERS GROVE        IL    60515  SFD     85.61                33      0.250              0.016
4631026  SARATOGA             CA    95070  SFD     66.39                        0.250              0.016
4631270  ANAHEIM              CA    92808  SFD     80.00                        0.250              0.016
4631287  SANIBEL              FL    33957  SFD     54.95                        0.250              0.016
4631555  CLOSTER              NJ    07624  SFD     77.19                        0.250              0.016
4632267  BIXBY                OK    74008  SFD     79.99                        0.250              0.016
4632464  SAN ANTONIO          TX    78248  SFD     78.55                        0.250              0.016
4632782  ORINDA               CA    94563  LCO     52.00                        0.250              0.016
4632793  MURRIETA             CA    92562  SFD     62.50                        0.250              0.016
4632810  SAN DIEGO            CA    92130  SFD     62.20                        0.250              0.016
4632827  DUNEDIN              FL    34698  SFD     48.78                        0.250              0.016
4632834  SAN FRANCISCO        CA    94115  LCO     80.00                        0.250              0.016
4632838  VENTURA              CA    93004  SFD     80.00                        0.250              0.016
4632840  MONTE SERENO         CA    95030  SFD     39.34                        0.250              0.016
4632849  PLANO                TX    75093  SFD     62.00                        0.250              0.016
4632854  MIAMI                FL    33134  SFD     52.63                        0.250              0.016
4632864  SUNNYVALE            CA    94087  SFD     65.38                        0.250              0.016
4632867  REGO PARK            NY    11374  SFD     57.14                        0.250              0.016
4632892  COLLEYVILLE          TX    76034  SFD     80.00                        0.250              0.016
4632894  GLENDALE             CA    91208  SFD     79.19                        0.250              0.016
4632895  LAKE VILLA           IL    60046  SFD     47.45                        0.250              0.016
4632905  SCARSDALE            NY    10583  SFD     80.00                        0.250              0.016
4632906  SANTA MONICA         CA    90405  SFD     39.11                        0.250              0.016
4632914  IRVING               TX    75063  SFD     28.06                        0.250              0.016
4632921  SAN JOSE             CA    95138  SFD     80.00                        0.250              0.016
4632933  HOUSTON              TX    77092  SFD     66.10                        0.250              0.016
4632948  OLD BROOKVILLE       NY    11545  SFD     55.56                        0.250              0.016
4632955  WHITEHOUSE STATIO   NNJ    08889  SFD     55.56                        0.250              0.016
4632990  JACKSONVILLE         FL    32259  SFD     68.97                        0.250              0.016
4633187  ALPHARETTA           GA    30201  SFD     67.57                        0.250              0.016
4633317  PEBBLE BEACH         CA    93953  SFD     39.71                        0.250              0.016
4634266  ROLLING HILLS EST   ACA    90274  SFD     80.00    GD 3YR              0.250              0.016
4634414  HINGHAM              MA    02043  SFD     75.94                        0.250              0.016
4636262  NASHVILLE            TN    37205  SFD     73.61                        0.250              0.016
4638542  SALT LAKE CITY       UT    84109  SFD     36.00                        0.250              0.016
4639026  CHERRY HILL          NJ    08003  PUD     54.70                        0.250              0.016
4641677  POST FALLS           ID    83854  SFD     58.66                        0.250              0.016
4642566  FREDERICK            MD    21702  SFD     79.67                        0.250              0.016
6354558  KAILUA-KONA          HI    96740  SFD     61.54                        0.250              0.016
6360261  PRINCETON            NJ    08540  SFD     62.00                        0.250              0.016
6404593  CASTLE ROCK          CO    80104  SFD     75.00                        0.250              0.016
6452560  CHARLOTTE            NC    28211  SFD     42.81                        0.250              0.016
</TABLE>


<PAGE>


                                   EXHIBIT F-3

            [Schedule of Mortgage Loans Serviced by Other Servicers]


NASCOR
NMI / 1997-15 Exhibit F-3 (Part A)
15 YEAR FIXED RATE NON-RELOCATION AND RELOCATION LOANS

<TABLE>
<CAPTION>

                                                               NET                                         CUT-OFF
MORTGAGE                                            MORTGAGE   MORTGAGE    CURRENT   ORIGINAL  SCHEDULED   DATE
LOAN                                ZIP   PROPERTY  INTEREST   INTEREST    MONTHLY   TERM TO   MATURITY    PRINCIPAL
NUMBER   CITY                STATE  CODE   TYPE     RATE       RATE        PAYMENT   MATURITY  DATE        BALANCE
- ------   ----                -----  ----   ----     ----       ----        -------   --------  ----        -------
<S>     <C>                    <C>  <C>       <C>      <C>      <C>        <C>          <C>     <C>            <C>

4555810 BRADENTON              FL   34202     SFD      8.375    8.109      $2,809.47    171     1-Jan-11     $270,256.39
4558301 NEW YORK               NY   10013     COP      7.750    7.484      $1,477.81    180     1-Jan-11     $147,131.11
4570414 INDIAN HARBOUR BEACH   FL   32937     SFD      8.500    8.234      $3,742.02    180     1-Dec-11     $370,274.61
4573805 KENNESAW               GA   30144     SFD      8.000    7.734      $4,625.36    180     1-Jan-12     $472,545.86
4582749 AURORA                 CO   80015     SFD      7.250    7.234      $2,966.81    180     1-Jun-12     $321,971.97
4602424 CINCINNATI             OH   45215     SFD      8.125    7.859      $3,851.53    180     1-Jul-12     $397,705.86
4614202 POWELL                 OH   43065     SFD      7.625    7.359      $3,082.63    180     1-Aug-12     $329,014.25
4618310 HENDERSONVILLE         TN   37075     SFD      7.750    7.484      $2,364.96    180     1-Jun-12     $249,008.68
4618317 PLANTATION             FL   33323     SFD      8.000    7.734      $2,165.03    180     1-Jul-12     $225,236.24
4619081 SOUTH MIAMI            FL   33143     SFD      7.750    7.484      $2,522.62    180     1-Jun-12     $265,609.26
4619093 TAMPA                  FL   33629     SFD      7.875    7.609      $2,371.12    180     1-Jun-12     $247,794.11
4620219 AUGUSTA                GA   30904     SFD      7.750    7.484      $2,177.17    180     1-Jul-12     $229,928.87
4621196 NAPLES                 FL   34109     SFD      7.625    7.359      $2,184.93    180     1-Jun-12     $229,866.37
4622900 BRENTWOOD              TN   37027     SFD      7.750    7.484      $2,146.11    180     1-Jul-12     $226,648.43
4622953 BOCA RATON             FL   33431     SFD      8.000    7.734      $2,866.96    180     1-Jul-12     $298,260.30
4624480 MASON                  OH   45040     SFD      8.000    7.734      $2,500.95    180     1-Jun-12     $258,555.19
4625098 PARKLAND               FL   33076     SFD      7.000    6.734      $3,721.15    180     1-Jul-12     $411,380.08
4625103 FORT LAUDERDALE        FL   33308     SFD      7.875    7.609      $2,845.35    180     1-Jul-12     $297,234.48
4625107 PARADISE VALLEY        AZ   85253     SFD      8.125    7.859      $4,236.69    180     1-Jul-12     $437,476.44
4625113 CINCINNATI             OH   45246     SFD      7.875    7.609      $2,493.44    180     1-Jul-12     $261,096.35
4625120 MT AIRY                MD   21771     SFD      7.625    7.359      $2,975.20    180     1-Jul-12     $316,591.16
4625124 CARLSBAD               CA   92009     SFD      7.875    7.609      $2,845.35    180     1-Jul-12     $298,241.05
4625640 BOCA RATON             FL   33496     SFD      7.875    7.609      $2,560.82    180     1-Jul-12     $268,416.94
4625648 ADVANCE                NC   27006     SFD      8.000    7.734      $2,628.04    180     1-Jun-12     $272,599.95
4625658 TARRYTOWN              NY   10591     SFD      8.000    7.734      $2,866.95    180     1-Jul-12     $298,260.32
4625662 HARDING TONWSHIP       NJ   07960     SFD      7.750    7.484      $4,800.50    180     1-Jul-12     $506,976.77
4625667 ATLANTA                GA   30327     SFD      7.625    7.359      $2,760.35    180     1-Jul-12     $293,549.96
4625671 SEATTLE                WA   98105     SFD      8.000    7.734      $2,881.30    180     1-Jul-12     $299,751.59
4625680 NAPLES                 FL   34108     HCO      8.250    7.984      $2,861.92    180     1-Jul-12     $293,326.68
4625974 GERMANTOWN             TN   38139     SFD      8.250    7.984      $2,910.42    180     1-Jun-12     $297,438.68
4626283 DELRAY BEACH           FL   33483     PUD      8.125    7.859      $2,720.15    180     1-Jul-12     $280,879.75
4626318 DATAW ISLAND           SC   29920     SFD      7.875    7.609      $2,412.86    180     1-Aug-12     $253,656.64
4626326 RUMSON                 NJ   07760     SFD      8.125    7.859      $4,814.41    180     1-Jul-12     $371,285.99
4627074 GAINESVILLE            GA   30504     SFD      7.000    6.734      $1,928.89    180     1-Jan-12     $209,071.66
4627086 ORLANDO                FL   32836     SFD      8.000    7.734      $2,499.99    180     1-Aug-12     $260,844.01
4628504 CHICAGO                IL   60610     LCO      7.625    7.359      $2,802.39    180     1-Jun-12     $297,294.47
4629710 RALEIGH                NC   27613     SFD      7.625    7.359      $2,417.06    180     1-Jul-12     $257,199.25
4641978 SAN ANTONIO            TX   78248     SFD      7.250    6.984      $2,282.16    180     1-Aug-12     $249,228.26
                                                                                        
                                                                                                          $11,271,607.98
COUNT: 38
WAC: 7.850535288
WAM: 176.6211375
WALTV: 66.79277728
</TABLE>


<TABLE>
<CAPTION>
                                                                                        
                                                                                        
MORTGAGE                                                               MORTGAGE             T.O.P.       MASTER
LOAN                                ZIP    PROPERTY                    INSURANCE  SERVICE   MORTGAGE     SERVICE
NUMBER      CITY            STATE   CODE     TYPE      LTV    SUBSIDY  CODE       FEE       LOAN         FEE
- ------      ----            -----   ----     ----      ---    -------  ----       ---       ----         ---
<S>     <C>                    <C>  <C>       <C>      <C>    <C>      <C>        <C>       <C>            <C>

4555810 BRADENTON              FL   34202     SFD      79.98                        0.250                  0.016
4558301 NEW YORK               NY   10013     COP      34.89                        0.250                  0.016
4570414 INDIAN HARBOUR BEACH   FL   32937     SFD      80.00                        0.250                  0.016
4573805 KENNESAW               GA   30144     SFD      78.06                        0.250                  0.016
4582749 AURORA                 CO   80015     SFD      53.72                        0.250                  0.016
4602424 CINCINNATI             OH   45215     SFD      75.47                        0.250                  0.016
4614202 POWELL                 OH   43065     SFD      57.39                        0.250                  0.016
4618310 HENDERSONVILLE         TN   37075     SFD      79.99                        0.250                  0.016
4618317 PLANTATION             FL   33323     SFD      89.98               11       0.250                  0.016
4619081 SOUTH MIAMI            FL   33143     SFD      80.00                        0.250                  0.016
4619093 TAMPA                  FL   33629     SFD      47.62                        0.250                  0.016
4620219 AUGUSTA                GA   30904     SFD      90.00               11       0.250                  0.016
4621196 NAPLES                 FL   34109     SFD      73.09                        0.250                  0.016
4622900 BRENTWOOD              TN   37027     SFD      80.00                        0.250                  0.016
4622953 BOCA RATON             FL   33431     SFD      55.56                        0.250                  0.016
4624480 MASON                  OH   45040     SFD      69.98                        0.250                  0.016
4625098 PARKLAND               FL   33076     SFD      64.69                        0.250                  0.016
4625103 FORT LAUDERDALE        FL   33308     SFD      33.33                        0.250                  0.016
4625107 PARADISE VALLEY        AZ   85253     SFD      80.00                        0.250                  0.016
4625113 CINCINNATI             OH   45246     SFD      72.82                        0.250                  0.016
4625120 MT AIRY                MD   21771     SFD      65.00                        0.250                  0.016
4625124 CARLSBAD               CA   92009     SFD      69.77                        0.250                  0.016
4625640 BOCA RATON             FL   33496     SFD      55.10                        0.250                  0.016
4625648 ADVANCE                NC   27006     SFD      55.00                        0.250                  0.016
4625658 TARRYTOWN              NY   10591     SFD      46.15                        0.250                  0.016
4625662 HARDING TONWSHIP       NJ   07960     SFD      53.13                        0.250                  0.016
4625667 ATLANTA                GA   30327     SFD      36.94                        0.250                  0.016
4625671 SEATTLE                WA   98105     SFD      90.00               06       0.250                  0.016
4625680 NAPLES                 FL   34108     HCO      79.95                        0.250                  0.016
4625974 GERMANTOWN             TN   38139     SFD      41.38                        0.250                  0.016
4626283 DELRAY BEACH           FL   33483     PUD      79.24                        0.250                  0.016
4626318 DATAW ISLAND           SC   29920     SFD      80.00                        0.250                  0.016
4626326 RUMSON                 NJ   07760     SFD      69.44                        0.250                  0.016
4627074 GAINESVILLE            GA   30504     SFD      67.06                        0.250                  0.016
4627086 ORLANDO                FL   32836     SFD      80.00                        0.250                  0.016
4628504 CHICAGO                IL   60610     LCO      39.63                        0.250                  0.016
4629710 RALEIGH                NC   27613     SFD      79.99                        0.250                  0.016
4641978 SAN ANTONIO            TX   78248     SFD      73.55                        0.250                  0.016
                                                                                        
                                                                                        
                                                                                        
                                                                                        
</TABLE>


NASCOR                                                                       
NMI / 1997-15  Exhibit F-3 (Part B)                                          
15 YEAR FIXED RATE NON-RELOCATION AND RELOCATION LOANS                       
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
 MORTGAGE                                                   NMI              
 LOAN                                                       LOAN             
 NUMBER                  SERVICER                           SELLER           
 ------                  --------                           ------           
                                                                             
4555810       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4558301       CITICORP MORTGAGE, INC.             CITICORP MORTGAGE, INC.    
4570414       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4573805       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4582749       HUNTINGTON MORTGAGE COMPANY         HUNTINGTON MORTGAGE COMPANY
4602424       HUNTINGTON MORTGAGE COMPANY         HUNTINGTON MORTGAGE COMPANY
4614202       HUNTINGTON MORTGAGE COMPANY         HUNTINGTON MORTGAGE COMPANY
4618310       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4618317       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4619081       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4619093       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4620219       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4621196       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4622900       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4622953       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4624480       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4625098       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625103       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625107       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625113       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625120       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625124       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625640       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625648       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625658       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625662       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625667       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625671       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625680       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4625974       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4626283       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4626318       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4626326       FIRST UNION MORTGAGE CORP.          FIRST UNION MORTGAGE CORP. 
4627074       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4627086       SUNTRUST MORTGAGE, INC.             SUNTRUST MORTGAGE, INC.    
4628504       FIRST BANK NATIONAL ASSOC.          FIRST BANK NATIONAL ASSOC. 
4629710       FT MORTGAGE COMPANIES               FT MORTGAGE COMPANIES      
4641978       CIMARRON MORTGAGE COMPANY           CIMARRON MORTGAGE COMPANY  
                                                                             
                                                                             
COUNT: 38
WAC: 7.850535288
WAM: 176.6211375
WALTV: 66.79277728


<PAGE>


                                    EXHIBIT G

                               REQUEST FOR RELEASE
                       (for Trust Administrator/Custodian)


Loan Information

         Name of Mortgagor:                  -----------------------------

         Servicer
         Loan No.:                           -----------------------------

Custodian/Trust Administrator

         Name:                               -----------------------------

         Address:                            -----------------------------

                                             -----------------------------
         Custodian/Trust Administrator
         Mortgage File No.:                  -----------------------------

Seller

         Name:                               -----------------------------

         Address:                            -----------------------------

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

         Certificates:                       Mortgage Pass-Through Certificates,
                                             Series 1997-15


     The undersigned  Master Servicer hereby  acknowledges  that it has received
from First  Union  National  Bank,  as Trust  Administrator  for the  Holders of
Mortgage  Pass-Through  Certificates,  Series 1997-15, 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 September 29, 1997 (the "Pooling and Servicing
Agreement") among the Trust  Administrator,  the Seller, the Master Servicer and
United States Trust Company of New York, as Trustee.

(  ) Promissory Note dated  --------------,  199--, in the original  principal
     sum of $-----------, made by --------------------,  payable to, or endorsed
     to the order of, the Trustee.

(  ) Mortgage   recorded   on   ---------------------   as   instrument   no.
     --------------   in  the  County   Recorder's   Office  of  the  County  of
     --------------------,  State of ----------------------- in book/reel/docket
     -------------------- of official records at page/image ------------.

(  ) Deed  of  Trust  recorded  on  --------------------  as  instrument  no.
     -----------------  in  the  County  Recorder's  Office  of  the  County  of
     -------------------,   State  of   -----------------   in  book/reel/docket
     -------------------- of official records at page/image ------------.

(  ) Assignment  of  Mortgage  or Deed of Trust to the  Trustee,  recorded on
     ------------------------------  as  instrument  no.  --------------  in the
     County Recorder's Office of the County of ----------------------,  State of
     --------------------- in book/reel/docket  -------------------- of official
     records at page/image ------------.

(  ) Other  documents,   including  any  amendments,   assignments  or  other
     assumptions of the Mortgage Note or Mortgage.

     (  )  ---------------------------------------------

     (  )  ---------------------------------------------

     (  )  ---------------------------------------------

     (  )  ---------------------------------------------

         The  undersigned  Master  Servicer  hereby  acknowledges  and agrees as
follows:

                  (1) The Master  Servicer  shall hold and retain  possession of
         the  Documents in trust for the benefit of the Trustee,  solely for the
         purposes provided in the Agreement.

                  (2)  The  Master  Servicer  shall  not  cause  or  permit  the
         Documents to become  subject to, or  encumbered  by, any claim,  liens,
         security  interest,  charges,  writs of attachment or other impositions
         nor shall the  Master  Servicer  assert or seek to assert any claims or
         rights of setoff to or against the Documents or any proceeds thereof.

                  (3) The Master  Servicer  shall  return the  Documents  to the
         Trust Administrator when the need therefor no longer exists, unless the
         Mortgage Loan relating to the  Documents  has been  liquidated  and the
         proceeds  thereof  have been  remitted to the  Certificate  Account and
         except as expressly provided in the Agreement.

                  (4) The  Documents  and any proceeds  thereof,  including  any
         proceeds  of  proceeds,  coming into the  possession  or control of the
         Master  Servicer shall at all times be earmarked for the account of the
         Trust Administrator,  on behalf of the Trustee, and the Master Servicer
         shall keep the  Documents  and any proceeds  separate and distinct from
         all other  property  in the Master  Servicer's  possession,  custody or
         control.

                                    NORWEST BANK MINNESOTA, NATIONAL ASSOCIATION

                                    By:  --------------------------

                                    Title: ------------------------
Date: --------------, 19--


<PAGE>


                                    EXHIBIT H

                                                  AFFIDAVIT PURSUANT TO SECTION
                                                  860E(e)(4)OF THE INTERNAL
                                                  REVENUE CODE OF 1986, AS
                                                  AMENDED, AND FOR NON-ERISA
                                                  INVESTORS

STATE OF                   )
                           ) ss:
COUNTY OF                  )

     [NAME OF OFFICER], being first duly sworn, deposes and says:

     1. That he is [Title of Officer] of [Name of Purchaser] (the  "Purchaser"),
a [description  of type of entity] duly organized and existing under the laws of
the [State of ] [United States], on behalf of which he makes this affidavit.

     2.  That the Purchaser's Taxpayer Identification Number is [             ].

     3. That the  Purchaser  is not a  "disqualified  organization"  within  the
meaning of Section  860E(e)(5),of  the Internal Revenue Code of 1986, as amended
(the "Code"),  or an ERISA  Prohibited  Holder,  and will not be a "disqualified
organization" or an ERISA Prohibited Holder, as of [date of transfer],  and that
the Purchaser is not acquiring  Norwest Asset  Securities  Corporation  Mortgage
Pass-Through Certificates, Series 1997-15, 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 subject to
the fiduciary provisions of the Employee Retirement Income Security Act of 1974,
as amended  ("ERISA"),  and/or Code Section 4975 or any  governmental  plan,  as
defined in Section  3(32) of ERISA,  subject to any federal,  state or local law
which is, to a material extent,  similar to the foregoing provisions of ERISA or
the Code  (collectively,  a "Plan") or a Person acting on behalf of or investing
the assets of such a Plan.

     4. That the Purchaser historically has paid its debts as they have come due
and  intends to pay its debts as they come due in the  future and the  Purchaser
intends to pay taxes  associated  with holding the Class A-R Certificate as they
become due.

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

     6. That the Purchaser  will not transfer the Class A-R  Certificate  to any
person  or entity  from  which  the  Purchaser  has not  received  an  affidavit
substantially  in the form of this  affidavit  and as to which the Purchaser has
actual  knowledge that the  requirements set forth in paragraph 3, 4 or 7 hereof
are not  satisfied or that the Purchaser has reason to know does not satisfy the
requirements set forth in paragraph 4 hereof.

     7. That the Purchaser (i) is a U.S. Person or (ii) is a person other than a
U.S.  Person (a  "Non-U.S.  Person")  that  holds the Class A-R  Certificate  in
connection  with the conduct of a trade or business within the United States and
has  furnished  the  transferor  and the Trust  Administrator  with an effective
Internal  Revenue  Service  Form 4224 or  successor  form at the time and in the
manner required by the Code or (iii) is a Non-U.S.  Person that has delivered to
both the  transferor  and the Trust  Administrator  an opinion  of a  nationally
recognized  tax  counsel  to the  effect  that the  transfer  of the  Class  A-R
Certificate  to it is in accordance  with the  requirements  of the Code and the
regulations  promulgated  thereunder  and that  such  transfer  of the Class A-R
Certificate  will not be  disregarded  for federal  income tax  purposes.  "U.S.
Person"  means a citizen  or  resident  of the  United  States,  a  corporation,
partnership  or other  entity  created or  organized in or under the laws of the
United States or any political subdivision thereof, an estate that is subject to
U.S. federal income tax regardless of the source of its income or a trust if (i)
for taxable years  beginning after December 31, 1996 (or ending after August 20,
1996, if the trustee has made an applicable election), a court within the United
States is able to exercise primary  supervision over the  administration of such
trust,  and  one or  more  U.S.  Persons  have  the  authority  to  control  all
substantial  decisions of such trust or (ii) for all other taxable  years,  such
trust is subject to U.S.  federal  income  tax  regardless  of the source of its
income.

     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 1997-15, 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 1997-15
                    CLASS [A-WIO][B-3][B-4][B-5] 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 1997-15, Class
[A-WIO][B-3][B-4][B-5]    Certificates   (the   "Class    [A-WIO][B-3][B-4][B-5]
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 September 29, 1997 (the "Pooling and Servicing
Agreement") among Norwest Asset Securities  Corporation,  as seller  ("NASCOR"),
Norwest Bank Minnesota,  National  Association,  as master servicer (the "Master
Servicer"),  First  Union  National  Bank,  as trust  administrator  (the "Trust
Administrator")  and United  States Trust  Company of New York,  as trustee (the
"Trustee"),  of  Norwest  Asset  Securities  Corporation  Mortgage  Pass-Through
Certificates, Series 1997-15.

     Section 2.  Representations and Warranties of the Purchaser.  In connection
with the proposed transfer, the Purchaser represents and warrants to NASCOR, the
Master Servicer and the Trust Administrator that:

                  (a) The Purchaser is duly organized,  validly  existing and in
         good standing under the laws of the jurisdiction in which the Purchaser
         is    organized,    is    authorized    to    invest   in   the   Class
         [A-WIO][B-3][B-4][B-5]  Certificates, and to enter into this Agreement,
         and duly executed and delivered this Agreement.

                  (b)    The     Purchaser     is     acquiring     the    Class
         [A-WIO][B-3][B-4][B-5]  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-WIO][B-3][B-4][B-5]   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-WIO][B-3][B-4][B-5]  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
         -------------,  -------,  relating to the Class  [A-WIO][B-3][B-4][B-5]
         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
         NASCOR concerning the Class [A-WIO][B-3][B-4][B-5] Certificates and all
         matters  relating  thereto,  and  obtain  any  additional   information
         (including  documents)  relevant to its  decision to purchase the Class
         [A-WIO][B-3][B-4][B-5]   Certificates  that  NASCOR  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-WIO][B-3][B-4][B-5]  Certificates.  The  Purchaser  will  not use or
         disclose any information it receives in connection with its purchase of
         the Class [A-WIO][B-3][B-4][B-5]  Certificates other than in connection
         with a subsequent sale of Class [A-WIO][B-3][B-4][B-5] 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-3][B-4][B-5]  Certificates  only] if the  Purchaser  is an insurance
         company, the source of funds used to purchase the Class [B-3][B-4][B-5]
         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) and 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  or (iii) the  Purchaser
         has provided (a) a "Benefit  Plan Opinion"  satisfactory  to NASCOR and
         the Trust Administrator of the Trust Estate and (b) such other opinions
         of counsel,  officers'  certificates  and  agreements  as NASCOR or the
         Master Servicer may have required. A Benefit Plan Opinion is an opinion
         of counsel to the effect that the proposed  transfer will not cause the
         assets of the Trust Estate to be regarded as "plan  assets" and subject
         to the prohibited  transaction provisions of ERISA, the Code or Similar
         Law and will not  subject the Trust  Administrator,  the  Trustee,  the
         Seller or the Master  Servicer to any  obligation  in addition to those
         undertaken  in the  Pooling  and  Servicing  Agreement  (including  any
         liability  for civil  penalties  or excise  taxes  imposed  pursuant to
         ERISA, Section 4975 of the Code or Similar Law).

                  (f) If the  Purchaser is a depository  institution  subject to
         the  jurisdiction  of the  Office of the  Comptroller  of the  Currency
         ("OCC"),  the Board of Governors of the Federal Reserve System ("FRB"),
         the  Federal  Deposit  Insurance  Corporation  ("FDIC"),  the Office of
         Thrift Supervision ("OTS") or the National Credit Union  Administration
         ("NCUA"),  the Purchaser has reviewed the "Supervisory Policy Statement
         on  Securities  Activities"  dated  January  28,  1992  of the  Federal
         Financial  Institutions  Examination  Council  and the April  15,  1994
         Interim Revision thereto as adopted by the OCC, FRB, FDIC, OTS and NCUA
         (with  modifications as applicable),  as appropriate,  other applicable
         investment  authority,  rules,  supervisory  policies and guidelines of
         these   agencies  and,  to  the  extent   appropriate,   state  banking
         authorities   and  has  concluded   that  its  purchase  of  the  Class
         [A-WIO][B-3][B-4][B-5] Certificates is in compliance therewith.

     Section 3. Transfer of Class [A-WIO][B-3][B-4][B-5] Certificates.

                  (a)    The    Purchaser    understands    that    the    Class
         [A-WIO][B-3][B-4][B-5]  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-WIO][B-3][B-4][B-5]
         Certificates  are registered  under the Act and applicable state law or
         unless an exemption  from  registration  is  available.  The  Purchaser
         further  understands  that neither NASCOR,  the Master Servicer nor the
         Trust  Administrator  is under any  obligation  to  register  the Class
         [A-WIO][B-3][B-4][B-5]  Certificates or make an exemption available. In
         the  event  that  such a  transfer  is to be made in  reliance  upon an
         exemption  from the Act or applicable  state  securities  laws, (i) the
         Trust  Administrator  shall require, in order to assure compliance with
         such laws, that the Certificateholder's  prospective transferee certify
         to NASCOR and the Trust  Administrator  as to the factual basis for the
         registration or  qualification  exemption  relied upon, and (ii) unless
         the transferee is a "Qualified  Institutional Buyer" within the meaning
         of Rule 144A of the Act, the Trust Administrator or NASCOR may, if such
         transfer is made  within  three years from the later of (a) the Closing
         Date or (b) the last date on which NASCOR or any affiliate  thereof was
         a holder of the  Certificates  proposed to be  transferred,  require an
         Opinion  of  Counsel  that such  transfer  may be made  pursuant  to an
         exemption  from the Act and state  securities  laws,  which  Opinion of
         Counsel shall not be an expense of the Trust Administrator,  the Master
         Servicer or NASCOR. Any such Certificateholder  desiring to effect such
         transfer shall,  and does hereby agree to,  indemnify the Trustee,  the
         Trust  Administrator,  the Master Servicer,  any Paying Agent acting on
         behalf of the Trust Administrator and NASCOR 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-WIO][B-3][B-4][B-5]  Certificate
         shall be made  unless  the  transferee  provides  NASCOR  and the Trust
         Administrator with a Transferee's Letter,  substantially in the form of
         this Agreement.

                  (c)   The    Purchaser    acknowledges    that    its    Class
         [A-WIO][B-3][B-4][B-5]  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>



                                    EXHIBIT K






                      NORWEST ASSET SECURITIES CORPORATION


                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1997-15
                       CLASS [M] [B-1] [B-2] 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 1997-15, Class
[M] [B-1] [B-2]  Certificates (the "Class [M] [B-1] [B-2]  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 September 29, 1997 (the "Pooling and Servicing
Agreement") among Norwest Asset Securities  Corporation,  as seller  ("NASCOR"),
Norwest Bank Minnesota,  National  Association,  as master servicer (the "Master
Servicer"),  First  Union  National  Bank,  as trust  administrator  (the "Trust
Administrator"),  and United  States Trust  Company of New York, as trustee (the
"Trustee")  of  Norwest  Asset  Securities   Corporation  Mortgage  Pass-Through
Certificates, Series 1997-15.

     Section 2.  Representations and Warranties of the Purchaser.  In connection
with the proposed transfer, the Purchaser represents and warrants to the NASCOR,
the Master Servicer and the Trust Administrator that:

                  Either (i) the  Purchaser  is not an employee  benefit plan or
         other  retirement  arrangement  subject  to  Title  I of  the  Employee
         Retirement  Income  Security  Act of 1974,  as amended,  ("ERISA"),  or
         Section  4975 of the  Internal  Revenue  Code of 1986,  as amended (the
         "Code"),  or a governmental plan, as defined in Section 3(32) of ERISA,
         subject to any federal, state or local law ("Similar Law") which is, to
         a material extent,  similar to the foregoing provisions of ERISA or the
         Code (collectively,  a "Plan"), an agent acting on behalf of a Plan, or
         a person  utilizing the assets of a Plan or (ii) if the Purchaser is an
         insurance  company,  the source of funds used to purchase the Class [M]
         [B-1] [B-2]  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) and
         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  or (iii)
         the Purchaser has provided (a) a "Benefit Plan Opinion" satisfactory to
         NASCOR  and the Trust  Administrator  of the Trust  Estate and (b) such
         other  opinions of counsel,  officers'  certificates  and agreements as
         NASCOR or the Master Servicer may have required. A Benefit Plan Opinion
         is an opinion of counsel to the effect that the proposed  transfer will
         not cause  the  assets of the  Trust  Estate  to be  regarded  as "plan
         assets" and subject to the prohibited  transaction provisions of ERISA,
         the Code or Similar Law and will not  subject the Trust  Administrator,
         the Trustee,  the Seller or the Master  Servicer to any  obligation  in
         addition to those  undertaken  in the Pooling and  Servicing  Agreement
         (including  any liability  for civil  penalties or excise taxes imposed
         pursuant to ERISA, Section 4975 of the Code or Similar Law).

         IN WITNESS  WHEREOF,  the  undersigned  has caused this Agreement to be
validly  executed by its duly  authorized  representative  as of the day and the
year first above written.

                                   [PURCHASER]



                                    By:  -----------------------------

                                    Its: -----------------------------

                                   [Reserved]


<PAGE>


                                    EXHIBIT L




                   Norwest Mortgage, Inc. Servicing Agreement

              First Union Mortgage Corporation Servicing Agreement

                Cimarron Mortgage Corporation Servicing Agreement

                   Suntrust Mortgage, Inc. Servicing Agreement

               The Huntington Mortgage Company Servicing Agreement

               First Bank National Association Servicing Agreement

                    FT Mortgage Companies Servicing Agreement

                   Citicorp Mortgage, 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 holder of the  entire  interest  in Norwest
Asset Securities Corporation Mortgage Pass-Through Certificates, Series 1997-15,
Class ---- (the "Class B  Certificates").  The Class B Certificates  were issued
pursuant to a Pooling and  Servicing  Agreement  dated as of September  29, 1997
among Norwest Asset Securities Corporation,  as Seller ("NASCOR"),  Norwest Bank
Minnesota,  National Association, as Master Servicer, First Union National Bank,
as Trust Administrator and United States Trust Company of New York, as Trustee.

         ------------------------   intends   to  resell  all  of  the  Class  B
Certificates directly to the Purchaser on or promptly after the date hereof.

         In connection  with such sale,  the parties hereto have agreed that the
Company will cause, to the extent that the Company as Master Servicer is granted
such authority in the related Servicing Agreements,  the related servicers (each
a related "Servicer"), which service the Mortgage Loans which comprise the Trust
Estate  related  to the above  referenced  series  under the  related  servicing
agreements (each a related "Servicing Agreement"),  to engage in certain special
servicing  procedures relating to foreclosures for the benefit of the Purchaser,
and that the  Purchaser  will deposit  funds in a  collateral  fund to cover any
losses  attributable  to such  procedures  as well as all  advances and costs in
connection therewith, as set forth herein.

         In consideration of the mutual agreements herein contained, the receipt
and sufficiency of which are hereby acknowledged,  the Company and the Purchaser
agree that the following  provisions shall become effective and shall be binding
on and enforceable by the Company and the Purchaser:



                                    ARTICLE I

                                   DEFINITIONS

     Section 1.01 Defined Terms

     Whenever used in this Agreement,  the following  words and phrases,  unless
the context otherwise requires, shall have the following meanings:

     Business  Day:  Any day other than (i) a Saturday or a Sunday or (ii) a day
on  which  banking  institutions  in the  State  of New  York  are  required  or
authorized by law or executive order to be closed.

     Collateral  Fund: The fund  established and maintained  pursuant to Section
3.01 hereof.

     Collateral  Fund  Permitted  Investments:  Either  (i)  obligations  of, or
obligations fully guaranteed as to principal and interest by, the United States,
or any agency or instrumentality  thereof,  provided such obligations are backed
by the full faith and  credit of the United  States,  (ii) a money  market  fund
rated in the highest rating  category by a nationally  recognized  rating agency
selected by the Company,  (iii) cash,  (iv) mortgage  pass-through  certificates
issued or guaranteed by Government National Mortgage Association, FNMA or FHLMC,
(v) commercial paper (including both  non-interest-bearing  discount obligations
and interest-bearing  obligations payable on demand or on a specified date), the
issuer of which may be an affiliate  of the Company,  having at the time of such
investment a rating of at least A-1 by Standard  and Poor's  ("S&P") or at least
P-1 by Moody's  Investors  Service,  Inc.  ("Moody's")  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 Aa2 by Moody's
or AA by S&P, (y) the certificate of deposit or other unsecured  short-term debt
obligations of such depository  institution or trust company have a rating of at
least P-1 by Moody's or A-1 by S&P or (z) the  depository  institution  or trust
company is one that is acceptable to either  Moody's or S&P and, for each of the
preceding  clauses (i), (iv),  (v) and (vi),  the maturity  thereof shall be not
later  than the  earlier  to occur of (A) 30 days  from the date of the  related
investment  and (B) the next  succeeding  Distribution  Date as  defined  in the
related Pooling and Servicing Agreement.

     Commencement of Foreclosure: The first official action required under local
law in order to commence foreclosure proceedings or to schedule a trustee's sale
under a deed of trust,  including  (i) in the case of a mortgage,  any filing or
service of process necessary to commence an action to foreclose,  or (ii) in the
case of a deed of trust, posting, the publishing, filing or delivery of a notice
of sale,  but not including in either case (x) any notice of default,  notice of
intent to  foreclose  or sell or any other  action  prerequisite  to the actions
specified  in (i) or  (ii)  above,  (y)  the  acceptance  of a  deed-in-lieu  of
foreclosure  (whether  in  connection  with a sale of the  related  property  or
otherwise) or (z) initiation and completion of a short pay-off.

     Current  Appraisal:  With  respect  to any  Mortgage  Loan as to which  the
Purchaser has made an Election to Delay Foreclosure, an appraisal of the related
Mortgaged  Property  obtained  by the  Purchaser  at its  own  expense  from  an
independent  appraiser  (which  shall  not be an  affiliate  of  the  Purchaser)
acceptable to the Company as nearly contemporaneously as practicable to the time
of  the  Purchaser's  election,   prepared  based  on  the  Company's  customary
requirements for such appraisals.

     Election to Delay  Foreclosure:  Any election by the Purchaser to delay the
Commencement of Foreclosure, made in accordance with Section 2.02(b).

     Election to  Foreclose:  Any election by the  Purchaser to proceed with the
Commencement of Foreclosure, made in accordance with Section 2.03(a).

     Monthly Advances:  Principal and interest  advances and servicing  advances
including costs and expenses of foreclosure.

     Required  Collateral  Fund  Balance:  As of any date of  determination,  an
amount equal to the aggregate of all amounts previously required to be deposited
in the Collateral  Fund pursuant to Section  2.02(d)  (after  adjustment for all
withdrawals and deposits pursuant to Section 2.02(e)) and Section 2.03(b) (after
adjustment for all  withdrawals  and deposits  pursuant to Section  2.03(c)) and
Section  3.02 to be reduced by all  withdrawals  therefrom  pursuant  to Section
2.02(g) and Section 2.03(d).

     Section 1.02   Definitions Incorporated by Reference

     All  capitalized  terms not otherwise  defined in this Agreement shall have
the meanings assigned in the Pooling and Servicing Agreement.



                                   ARTICLE II

                          SPECIAL SERVICING PROCEDURES

     Section 2.01   Reports and Notices

     (a) In connection  with the performance of its duties under the Pooling and
Servicing  Agreement  relating to the realization upon defaulted Mortgage Loans,
the Company as Master  Servicer  shall  provide to the  Purchaser  the following
notices and reports:

          (i)  Within  five  Business  Days  after  each  Distribution  Date (or
     included in or with the monthly statements to  Certificateholders  pursuant
     to the Pooling and Servicing Agreement),  the Company, shall provide to the
     Purchaser a report,  using the same  methodology  and  calculations  in its
     standard servicing  reports,  indicating for the Trust Estate the number of
     Mortgage Loans that are (A) thirty days, (B) sixty days, (C) ninety days or
     more  delinquent  or (D) in  foreclosure,  and  indicating  for  each  such
     Mortgage Loan the loan number and outstanding principal balance.

          (ii) Prior to the  Commencement  of Foreclosure in connection with any
     Mortgage  Loan,  the Company shall cause (to the extent that the Company as
     Master  Servicer  is  granted  such  authority  in  the  related  Servicing
     Agreement)  the  Servicer to provide the  Purchaser  with a notice (sent by
     telecopier)  of such  proposed and imminent  foreclosure,  stating the loan
     number and the aggregate  amount owing under the Mortgage Loan. Such notice
     may be provided to the Purchaser in the form of a copy of a referral letter
     from  such  Servicer  to  an  attorney   requesting   the   institution  of
     foreclosure.

     (b) If requested by the Purchaser, the Company shall cause the Servicer (to
the extent that the Company as Master  Servicer is granted such authority in the
related Servicing  Agreement) to make its servicing  personnel available (during
their normal business hours) to respond to reasonable inquiries,  by phone or in
writing  by  facsimile,  electronic,  or  overnight  mail  transmission,  by the
Purchaser in  connection  with any Mortgage  Loan  identified  in a report under
subsection  (a) (i) (B),  (a) (i) (C),  (a) (i) (D),  or (a) (ii) which has been
given to the Purchaser;  provided,  that (1) the related  Servicer shall only be
required to provide  information  that is readily  accessible  to its  servicing
personnel and is  non-confidential  and (2) the related  Servicer  shall respond
within five Business Days orally or in writing by facsimile transmission.

     (c) In addition to the foregoing,  the Company shall cause the Servicer (to
the extent that the Company as Master  Servicer is granted such authority in the
related Servicing Agreement) to provide to the Purchaser such information as the
Purchaser may reasonably  request  provided,  however,  that such information is
consistent with normal reporting  practices,  concerning each Mortgage Loan that
is at least ninety days  delinquent and each Mortgage Loan which has become real
estate owned, through the final liquidation thereof;  provided, that the related
Servicer  shall  only  be  required  to  provide  information  that  is  readily
accessible to its servicing personnel and is non-confidential provided, however,
that the Purchaser will  reimburse the Company and the related  Servicer for any
out of pocket expenses.

     Section 2.02   Purchaser's Election to Delay Foreclosure Proceedings

     (a) The  Purchaser  shall be deemed to direct the Company to direct (to the
extent that the  Company as Master  Servicer is granted  such  authority  in the
related  Servicing  Agreement)  the related  Servicer that in the event that the
Company does not receive written notice of the Purchaser's  election pursuant to
subsection (b) below within 24 hours (exclusive of any intervening  non-Business
Days) of  transmission  of the notice provided by the Company under Section 2.01
(a) (ii)  subject to  extension  as set forth in Section  2.02(b),  the  related
Servicer may proceed with the  Commencement  of  Foreclosure  in respect of such
Mortgage Loan in accordance with its normal foreclosure policies without further
notice  to the  Purchaser.  Any  foreclosure  that  has  been  initiated  may be
discontinued  (i) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage  Loan  (including  by means of a short  payoff  approved by the related
Servicer) or (ii) if the related Servicer has reached the terms of a forbearance
agreement  with the  borrower.  In the latter  case,  the related  Servicer  may
complete such forbearance agreement unless instructed otherwise by the Purchaser
within two Business Days notification.

     (b) In  connection  with any  Mortgage  Loan with respect to which a notice
under Section  2.01(a)(ii)  has been given to the  Purchaser,  the Purchaser may
elect to instruct the Company to cause, to the extent that the Company as Master
Servicer is granted  such  authority  in the related  Servicing  Agreement,  the
related Servicer to delay the Commencement of Foreclosure until such time as the
Purchaser determines that the related Servicer may proceed with the Commencement
of  Foreclosure.  Such  election  must be evidenced by written  notice  received
within 24 hours (exclusive of any intervening non-Business Days) of transmission
of the notice  provided by the Company under Section  2.01(a)(ii).  Such 24 hour
period shall be extended for no longer than an  additional  four  Business  Days
after the  receipt  of the  information  if the  Purchaser  requests  additional
information related to such foreclosure;  provided,  however, that the Purchaser
will have at least one  Business  Day to  respond  to any  requested  additional
information.  Any such  additional  information  shall be  provided  only to the
extent  (i) it is not  confidential  in  nature  and (ii) is  obtainable  by the
related  Servicer  from  existing  reports,  certificates  or  statements  or is
otherwise readily  accessible to its servicing  personnel.  The Purchaser agrees
that it has no right to deal with the mortgagor during such period.  However, if
such servicing activities include acceptance of a deed-in-lieu of foreclosure or
short  payoff,  the  Purchaser  will be notified and given two Business  Days to
respond.

     (c) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay Foreclosure, the Purchaser shall obtain a Current Appraisal as
soon as practicable,  but in no event more than 15 business days thereafter, and
shall provide the Company with a copy of such Current Appraisal.

     (d) Within two Business  Days of making any Election to Delay  Foreclosure,
the Purchaser  shall remit by wire  transfer to the Company,  for deposit in the
Collateral  Fund, an amount,  as calculated by the Company,  equal to the sum of
(i) 125% of the greater of the unpaid principal balance of the Mortgage Loan and
the value shown in the Current  Appraisal  referred to in  subsection  (c) above
(or, if such Current Appraisal has not yet been obtained, the Company's estimate
thereof,  in which case the  required  deposit  under this  subsection  shall be
adjusted upon obtaining such Current Appraisal), and (ii) three months' interest
on the Mortgage Loan at the applicable  Mortgage  Interest Rate. If any Election
to Delay Foreclosure extends for a period in excess of three months (such excess
period  being  referred to herein as the "Excess  Period"),  within two Business
Days the  Purchaser  shall remit by wire  transfer in advance to the Company for
deposit in the Collateral Fund the amount of each additional  month's  interest,
as  calculated  by the Company,  equal to interest on the  Mortgage  Loan at the
applicable  Mortgage  Interest  Rate for the  Excess  Period.  The terms of this
Agreement  will no longer apply to the  servicing of any Mortgage  Loan upon the
failure of the  Purchaser  to deposit any of the above  amounts  relating to the
Mortgage Loan within two Business Days of the Election to Delay  Foreclosure  or
within two Business Days of the  commencement  of the Excess  Period  subject to
Section 3.01.

     (e) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay Foreclosure, the Company may withdraw from the Collateral Fund
from time to time amounts  necessary to reimburse  the related  Servicer for all
related  Monthly  Advances  and  Liquidation  Expenses  thereafter  made by such
Servicer in accordance with the Pooling and Servicing  Agreement and the related
Servicing  Agreement.  To the  extent  that the  amount of any such  Liquidation
Expenses is determined by the Company based on estimated  costs,  and the actual
costs are  subsequently  determined  to be higher,  the Company may withdraw the
additional  amount from the Collateral Fund. In the event that the Mortgage Loan
is brought current by the mortgagor and the foreclosure  action is discontinued,
the amounts so withdrawn from the Collateral Fund shall be redeposited if and to
the extent that reimbursement therefor from amounts paid by the mortgagor is not
prohibited  pursuant  to the  Pooling  and  Servicing  Agreement  or the related
Servicing  Agreement,  applicable law or the related  mortgage  note.  Except as
provided in the preceding  sentence,  amounts withdrawn from the Collateral Fund
to cover Monthly  Advances and  Liquidation  Expenses  shall not be  redeposited
therein or otherwise reimbursed to the Purchaser.  If and when any such Mortgage
Loan  is  brought  current  by  the  mortgagor,  all  amounts  remaining  in the
Collateral  Fund in respect of such  Mortgage  Loan  (after  adjustment  for all
permitted  withdrawals  and  deposits  pursuant  to this  subsection)  shall  be
released to the Purchaser.

     (f) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay  Foreclosure,  the related  Servicer shall continue to service
the Mortgage Loan in accordance  with its customary  procedures  (other than the
delay in  Commencement  of  Foreclosure  as  provided  herein).  If and when the
Purchaser shall notify the Company that it believes that it is appropriate to do
so, the related  Servicer may proceed with the  Commencement of Foreclosure.  In
any event,  if the Mortgage Loan is not brought  current by the mortgagor by the
time the loan becomes 6 months  delinquent,  the  Purchaser's  election shall no
longer be effective  and at the  Purchaser's  option,  either (I) the  Purchaser
shall  purchase  the Mortgage  Loan from the related  Trust Estate at a purchase
price equal to the fair market  value as shown on the Current  Appraisal,  to be
paid by (x) applying any balance in the Collateral Fund to such to such purchase
price, and (y) to the extent of any deficiency,  by wire transfer of immediately
available  funds from the  Purchaser  to the  Company for deposit in the related
Certificate  Account;  or (ii)  the  related  Servicer  shall  proceed  with the
Commencement of Foreclosure.

     (g) Upon the occurrence of a liquidation  with respect to any Mortgage Loan
as to which the Purchaser made an Election to Delay  Foreclosure and as to which
the  related  Servicer   proceeded  with  the  Commencement  of  Foreclosure  in
accordance with subsection (f) above, the Company shall calculate the amount, if
any, by which the value shown on the Current Appraisal obtained under subsection
(c) exceeds the actual sales price obtained for the related  Mortgaged  Property
(net of  Liquidation  Expenses  and  accrued  interest  related to the  extended
foreclosure  period),  and the Company shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining  in the  Collateral  Fund in respect of such
Mortgage  Loan (after  adjustment  for all  permitted  withdrawals  and deposits
pursuant to this Agreement) shall be released to the Purchaser.

     Section 2.03   Purchaser's Election to Commence Foreclosure Proceedings

     (a) In  connection  with any  Mortgage  Loan  identified  in a report under
Section 2.01(a)(i)(B), the Purchaser may elect to instruct the Company to cause,
to the extent that the Company as Master  Servicer is granted such  authority in
the  related  Servicing  Agreement,  the related  Servicer  to proceed  with the
Commencement  of  Foreclosure  as soon as  practicable.  Such  election  must be
evidenced by written notice  received by the Company by 5:00 p.m., New York City
time,  on the third  Business  Day  following  the delivery of such report under
Section 2.01(a)(i).

     (b) Within two  Business  Days of making any  Election  to  Foreclose,  the
Purchaser  shall remit to the Company,  for deposit in the  Collateral  Fund, an
amount,  as  calculated  by the  Company,  equal to 125% of the  current  unpaid
principal balance of the Mortgage Loan and three months interest on the Mortgage
Loan at the  applicable  Mortgage  Interest  Rate. If and when any such Mortgage
Loan is brought current by the mortgagor,  all amounts in the Collateral Fund in
respect of such Mortgage Loan (after  adjustment  for all permitted  withdrawals
and deposits  pursuant to this Agreement)  shall be released to the Purchaser if
and to the extent that reimbursement therefor from amounts paid by the mortgagor
is not prohibited pursuant to the Pooling and Servicing Agreement or the related
Servicing  Agreement,  applicable law or the related mortgage note. The terms of
this  Agreement  will no longer apply to the servicing of any Mortgage Loan upon
the  failure of the  Purchaser  to deposit  the above  amounts  relating  to the
Mortgage Loan within two Business  Days of the Election to Foreclose  subject to
Section 3.01.

     (c) With respect to any Mortgage Loan as to which the Purchaser has made an
Election  to  Foreclose,  the  related  Servicer  shall  continue to service the
Mortgage  Loan  in  accordance  with  its  customary   procedures   (other  than
Commencement of Foreclosure as provided herein).  In connection  therewith,  the
Company shall have the same rights to make  withdrawals for Monthly Advances and
Liquidations  Expenses from the  Collateral  Fund as are provided  under Section
2.02(e), and the Company shall make reimbursements thereto to the limited extent
provided under such subsection in accordance with its customary procedures.  The
Company shall not be required to cause, to the extent that the Company as Master
Servicer is granted  such  authority  in the related  Servicing  Agreement,  the
related Servicer to proceed with the Commencement of Foreclosure if (i) the same
is stayed as a result of the  mortgagor's  bankruptcy or is otherwise  barred by
applicable  law, or to the extent that all legal  conditions  precedent  thereto
have not yet been complied with, or (ii) the Company  believes there is a breach
of representations or warranties by the Company, a Servicer,  or a Seller, which
may result in a repurchase or  substitution  of such Mortgage Loan, or (iii) the
Company or related Servicer  reasonably  believes the Mortgaged  Property may be
contaminated with or affected by hazardous wastes or hazardous  substances (and,
without  limiting  the  related   Servicer's  right  not  to  proceed  with  the
Commencement of Foreclosure, the Company supplies the Purchaser with information
supporting  such  belief).  Any  foreclosure  that  has  been  initiated  may be
discontinued  (x) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage Loan  (including by means of a short payoff  approved by the Purchaser)
or (y) with  notice to the  Purchaser  if the related  Servicer  has reached the
terms of a forbearance  agreement unless  instructed  otherwise by the Purchaser
within two Business Days of such  notification.  Any such  instruction  shall be
based upon a decision that such forbearance  agreement is not in conformity with
reasonable servicing practices.

     (d) Upon the occurrence of a liquidation  with respect to any Mortgage Loan
as to which the  Purchaser  made an  Election to  Foreclose  and as to which the
related  Servicer  proceeded with the  Commencement of Foreclosure in accordance
with subsection (c) above,  the Company shall  calculate the amount,  if any, by
which  the  unpaid  principal  balance  of the  Mortgage  Loan  at the  time  of
liquidation  (plus  all  unreimbursed   interest  and  servicing   advances  and
Liquidation  Expenses  in  connection  therewith  other than those paid from the
Collateral  Fund)  exceeds  the actual  sales  price  obtained  for the  related
Mortgaged  Property,  and the Company  shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining in the Collateral Fund (after adjustment for
all  withdrawals  and  deposits  pursuant to  subsection  (c) in respect of such
Mortgage Loan shall be released to the Purchaser.

     Section 2.04   Termination

     (a) With respect to all Mortgage  Loans  included in the Trust Estate,  the
Purchaser's  right to make any Election to Delay  Foreclosure or any Election to
Foreclose and the Company's  obligations  under Section 2.01 shall terminate (i)
at such  time as the  Principal  Balance  of the Class B  Certificates  has been
reduced  to  zero,  (ii) if the  greater  of (x) 43% (or such  lower  or  higher
percentage  that  represents  the  related  Servicer's  actual  historical  loss
experience  with respect to the Mortgage Loans in the related pool as determined
by the Company) of the aggregate  principal  balance of all Mortgage  Loans that
are in  foreclosure or are more than 90 days  delinquent on a contractual  basis
and REO  properties  or (y) the  aggregate  amount  that the  Company  estimates
through the normal servicing  practices of the related Servicer will be required
to be withdrawn  from the  Collateral  Fund with respect to Mortgage Loans as to
which the Purchaser has made an Election to Delay  Foreclosure or an Election to
Foreclosure,  exceeds  (z) the  then-current  principal  balance  of the Class B
Certificates,  (iii) upon any transfer by the  Purchaser of any interest  (other
than the minority interest therein,  but only if the transferee provides written
acknowledgment  to the Company of the Purchaser's  right hereunder and that such
transferee will have no rights  hereunder) in the Class B Certificates  (whether
or not such transfer is registered  under the Pooling and Servicing  Agreement),
including any such transfer in connection with a termination of the Trust Estate
or (iv) upon any breach of the terms of this Agreement by the Purchaser.

     (b)  Except as set forth in  2.04(a),  this  Agreement  and the  respective
rights,  obligations  and  responsibilities  of the  Purchaser  and the  Company
hereunder shall  terminate upon the later to occur of (i) the final  liquidation
of the last Mortgage  Loan as to which the Purchaser  made any Election to Delay
Foreclosure  or any Election to Foreclose  and the  withdrawal  of all remaining
amounts in the  Collateral  Fund as provided  herein and (ii) ten Business Days'
notice.  The Purchaser's  right to make an election  pursuant to Section 2.02 or
Section 2.03 hereof with respect to a particular  Mortgage Loan shall  terminate
if the Purchaser fails to make any deposit required  pursuant to Section 2.02(d)
or 2.03(b) or if the Purchaser fails to make any other deposit to the Collateral
Fund pursuant to this Agreement.



                                   ARTICLE III

                       COLLATERAL FUND; SECURITY INTEREST

     Section 3.01.  Collateral Fund

     Upon  receipt  from the  Purchaser  of the  initial  amount  required to be
deposited  in the  Collateral  Fund  pursuant to Article  II, the Company  shall
establish and maintain with Bankers Trust Company as a segregated account on its
books and records an account (the  "Collateral  Fund"),  entitled  "Norwest Bank
Minnesota,  National  Association,  as  Master  Servicer,  for  the  benefit  of
registered holders of Norwest Asset Securities Corporation Mortgage Pass-Through
Certificates, Series 1997-15. Amounts held in the Collateral Fund shall continue
to be the  property of the  Purchaser,  subject to the first  priority  security
interest  granted  hereunder  for the benefit of the  Certificateholders,  until
withdrawn from the Collateral Fund pursuant to Section 2.02 or 2.03 hereof.  The
Collateral  Fund shall be an "outside  reserve  fund"  within the meaning of the
REMIC  Provisions,  beneficially  owned by the Purchaser for federal  income tax
purposes.  All income,  gain,  deduction or loss with respect to the  Collateral
Fund shall be that of the Purchaser.  All  distributions  from the Trust Fund to
the  Collateral  Fund shall be treated as  distributed  to the  Purchaser as the
beneficial owner thereof.

     Upon the  termination of this Agreement and the liquidation of all Mortgage
Loans as to which the  Purchaser has made any Election to Delay  Foreclosure  or
any Election to Foreclose  pursuant to Section  2.04 hereof,  the Company  shall
distribute or cause to be distributed to the Purchaser all amounts  remaining in
the Collateral Fund (after adjustment for all deposits and permitted withdrawals
pursuant to this Agreement)  together with any investment  earnings thereon.  In
the  event the  Purchaser  has made any  Election  to Delay  Foreclosure  or any
Election to Foreclose, prior to any distribution to the Purchaser of all amounts
remaining in the Collateral  Fund, funds in the Collateral Fund shall be applied
consistent with the terms of this Agreement.

     Section 3.02.  Collateral Fund Permitted Investments.

     The Company shall,  at the written  direction of the Purchaser,  invest the
funds in the  Collateral  Fund in Collateral  Fund Permitted  Investments.  Such
direction shall not be changed more frequently than quarterly. In the absence of
any direction,  the Company shall select such investments in accordance with the
definition of Collateral Fund Permitted Investments in its discretion.

     All income and gain  realized  from any  investment as well as any interest
earned  on  deposits  in  the  Collateral  Fund  (net  of  any  losses  on  such
investments)  and any  payments of principal  made in respect of any  Collateral
Fund  Permitted  Investment  shall be  deposited  in the  Collateral  Fund  upon
receipt.  All costs and realized losses associated with the purchase and sale of
Collateral  Fund Permitted  Investments  shall be borne by the Purchaser and the
amount  of net  realized  losses  shall be  deposited  by the  Purchaser  in the
Collateral Fund promptly upon realization.  The Company shall  periodically (but
not more  frequently  than monthly)  distribute to the Purchaser upon request an
amount of cash,  to the extent cash is  available  therefore  in the  Collateral
Fund,  equal to the amount by which the balance of the  Collateral  Fund,  after
giving effect to all other  distributions to be made from the Collateral Fund on
such  date,  exceeds  the  Required  Collateral  Fund  Balance.  Any  amounts so
distributed  shall be  released  from the lien  and  security  interest  of this
Agreement.

     Section 3.03.  Grant of Security Interest

     The  Purchaser  hereby  grants  to  the  Company  for  the  benefit  of the
Certificateholders under the Pooling and Servicing Agreement a security interest
in and lien on all of the  Purchaser's  right,  title and interest,  whether now
owned or hereafter acquired, in and to: (1) the Collateral Fund, (2) all amounts
deposited in the Collateral  Fund and Collateral  Fund Permitted  Investments in
which such  amounts are  invested  (and the  distributions  and proceeds of such
investments)  and (3) all cash and  non-cash  proceeds of any of the  foregoing,
including  proceeds of the  voluntary  conversion  thereof (all of the foregoing
collectively, the "Collateral").

     The  Purchaser  acknowledges  the lien on and the security  interest in the
Collateral for the benefit of the  Certificateholders.  The Purchaser shall take
all actions  requested by the Company as may be reasonably  necessary to perfect
the security  interest  created under this Agreement in the Collateral and cause
it to be  prior  to all  other  security  interests  and  liens,  including  the
execution  and  delivery  to the  Company  for filing of  appropriate  financing
statements in accordance with applicable law. The Company shall file appropriate
continuation  statements,  or  appoint  an  agent  on its  behalf  to file  such
statements, in accordance with applicable law.

     Section 3.04.  Collateral Shortfalls.

     In the event that amounts on deposit in the Collateral Fund at any time are
insufficient  to  cover  any  withdrawals  therefrom  that the  Company  is then
entitled to make hereunder, the Purchaser shall be obligated to pay such amounts
to the Company  immediately  upon demand.  Such  obligation  shall  constitute a
general corporate  obligation of the Purchaser.  The failure to pay such amounts
within two Business Days of such demand (except for amounts to cover interest on
a Mortgage  Loan  pursuant  to Sections  2.02(d)  and 2.03 (b)),  shall cause an
immediate  termination  of the  Purchaser's  right to make any Election to Delay
Foreclosure  or Election to Foreclose and the Company's  obligations  under this
Agreement  with  respect to all  Mortgage  Loans to which  such  insufficiencies
relate, without the necessity of any further notice or demand on the part of the
Company.



                                   ARTICLE IV

                            MISCELLANEOUS PROVISIONS


     Section 4.01.  Amendment.

     This  Agreement  may be amended  from time to time by the  Company  and the
Purchaser by written agreement signed by the Company and the Purchaser.

     Section 4.02.  Counterparts.

     This   Agreement   may  be  executed   simultaneously   in  any  number  of
counterparts,  each of which counterparts shall be deemed to be an original, and
such counterparts shall constitute but one and the same instrument.

     Section 4.03.  Governing Law.

     This Agreement  shall be construed in accordance with the laws of the State
of New York and the  obligations,  rights and remedies of the parties  hereunder
shall be determined in accordance with such laws.

     Section 4.04.  Notices.

     All  demands,  notices and  direction  hereunder  shall be in writing or by
telecopy and shall be deemed effective upon receipt to:

          (a)  in the case of the Company,

               Norwest Bank Minnesota, National Association
               7485 New Horizon Way
               Frederick, MD  21703

               Attention:  Vice President, Master Servicing
               Phone:      301-696-7800
               Fax:        301-815-6365


          (b)  in the case of the Purchaser,

               ------------------------------
               ------------------------------
               ------------------------------
               ------------------------------
               Attention:--------------------


     Section 4.05.  Severability of Provisions.

     If any one or more of the covenants, agreements, provision or terms of this
Agreement  shall  be for  any  reason  whatsoever,  including  regulatory,  held
invalid, then such covenants, agreements,  provisions or terms of this Agreement
and  shall  in no way  affect  the  validity  or  enforceability  of  the  other
provisions of this Agreement.

Section 4.06. Successors and Assigns.

     The  provisions  of this  Agreement  shall be binding upon and inure to the
benefit of the respective  successors and assigns of the parties hereto, and all
such provisions shall inure to the benefit of the Certificateholders;  provided,
however,  that the  rights  under  this  Agreement  cannot  be  assigned  by the
Purchaser without the consent of the Company.

     Section 4.07.  Article and Section Headings.

     The article and section  headings  herein are for  convenience of reference
only and shall not limit or otherwise affect the meaning hereof.

     Section 4.08.  Confidentiality.

     The Purchaser  agrees that all information  supplied by or on behalf of the
Company  pursuant  to  Sections  2.01  or  2.02,  including  individual  account
information,  is the  property of the Company and the  Purchaser  agrees to hold
such information confidential and not to disclose such information.

     Each party  hereto  agrees  that  neither  it, nor any  officer,  director,
employee,  affiliate or independent  contractor acting at such party's direction
will  disclose  the terms of  Section  4.09 of this  Agreement  to any person or
entity  other  than such  party's  legal  counsel  except  pursuant  to a final,
non-appealable  order of court,  the pendency of such order the other party will
have  received  notice of at least five business days prior to the date thereof,
or pursuant to the other party's prior express written consent.

     Section 4.09.  Indemnification.

     The Purchaser  agrees to indemnify  and hold harmless the Company,  NASCOR,
and each  Servicer  and each  person who  controls  the  Company,  NASCOR,  or a
Servicer and each of their respective officers, directors, affiliates and agents
acting at the Company's,  NASCOR'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, NASCOR, or a Servicer, or on their behalf,
in  accordance  with the  provisions  of this  Agreement  and (i) which  actions
conflict with the Company's,  NASCOR'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:
                                          --------------------------------------


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission