NORWEST ASSET SEC CORP MORT PASS THR CERT SER 1997-20 TRUST
8-K, 1998-05-26
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

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



Date of Report:  November 26, 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 November 26, 1997,  Norwest  Asset  Securities  Corporation,  a Delaware
corporation (the "Registrant"),  sold Mortgage Pass-Through Certificates, Series
1997-20,  Class A-1,  Class A-R,  Class M, Class B-1 and Class B-2 (the "Offered
Certificates"),  having an aggregate original principal balance of $168,603,205.
The  Offered  Certificates  were  issued  pursuant  to a Pooling  and  Servicing
Agreement,  dated as of November 26, 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
1997-20,  Class  A-PO  Certificates  (having  an  initial  principal  balance of
$446,794.38),  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 $1,553,010.85  (the "Private Class B Certificates" and, together with
the Class A-PO and 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  99.09%  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-PO and 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-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
                                   November  26,  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

November 26, 1997

                                 /s/ Alan McKenney
                                 ------------------
                                 Alan McKenney
                                 Assistant Vice President




<PAGE>




                                INDEX TO EXHIBITS



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


   (EX-4)    Pooling and Servicing Agreement,  dated as of       E
             November   26,  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 November 26, 1997

                                 $170,156,215.85




                       Mortgage Pass-Through Certificates
                                 Series 1997-20





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




<PAGE>
                                TABLE OF CONTENTS

                                                                        

                                    ARTICLE I

                                   DEFINITIONS

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

                                   ARTICLE II

                          CONVEYANCE OF MORTGAGE LOANS;
                      ORIGINAL ISSUANCE OF THE CERTIFICATES

Section 2.01. Conveyance of Mortgage Loans......................................
Section 2.02. Acceptance by 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...........10
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-PO    -    Form of Face of Class A-PO Certificate
EXHIBIT A-WIO   -    Form of Face of Class A-WIO 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 1997-20 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 Residual Certificates
EXHIBIT J       -    Transferee's Letter (Class [A-PO][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  November  26,  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.


                                WITNESSETH THAT:

     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:  The Class A-1 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-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 November  2002,  100%.  As to any  Distribution  Date
subsequent to November 2002 to and including the  Distribution  Date in November
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 November 2003 to and  including  the  Distribution  Date in
November 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 November 2004 to and  including  the  Distribution  Date in
November 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 November 2005 to and  including  the  Distribution  Date in
November 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 November 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  November
preceding such  Distribution  Date (it being understood that for the purposes of
the  determination  of  the  Class  A  Prepayment  Percentage  for  the  current
Distribution  Date, the current Class A Percentage and  Subordinated  Percentage
shall be utilized). In order for the reduction referred to in the second through
sixth sentences to be applicable,  with respect to any Distribution Date (a) the
average  outstanding  principal  balance on such  Distribution  Date and for the
preceding five Distribution  Dates on the Mortgage Loans that were delinquent 60
days or more  (including  for this  purpose  any  payments  due with  respect to
Mortgage Loans in foreclosure  and REO Mortgage  Loans) must be less than 50% of
the current Class 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 December 2002 and November 2003, (2) 35% of the Original  Subordinated
Principal  Balance  if such  Distribution  Date  occurs  between  and  including
December 2003 and November 2004, (3) 40% of the Original Subordinated  Principal
Balance if such Distribution Date occurs between and including December 2004 and
November 2005, (4) 45% of the Original  Subordinated  Principal  Balance if such
Distribution Date occurs between and including  December 2005 and November 2006,
and (5) 50% of the Original Subordinated  Principal Balance if such Distribution
Date occurs during or after December 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-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-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-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  $3,403,124.32  minus  the  aggregate  amount  of Fraud  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, 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 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  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.

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

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

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

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

     Relevant Anniversary:  See "Bankruptcy Loss Amount."

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

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

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

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

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

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

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

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

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

     Scheduled  Principal  Amount:  The sum for each  outstanding  Mortgage Loan
(including  each defaulted  Mortgage Loan,  other than a Liquidated  Loan,  with
respect to which the related  Mortgaged  Property has been acquired by the Trust
Estate) of the product of (A) the Non-PO Fraction for such Mortgage Loan and (B)
the sum of the amounts  described in clauses y(i) and y(iv) of the definition of
Class  A  Non-PO  Optimal  Principal  Amount,  but  without  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., Great Financial Bank, First Bank National  Association,
FT Mortgage  Companies,  Columbia  National,  Inc. 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
$1,993,690.10 minus the sum of (i) the aggregate amount of Special Hazard 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) 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-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(f).

     Voting  Interest:  With respect to any provisions  hereof providing for the
action,  consent  or  approval  of the  Holders of all  Certificates  evidencing
specified Voting  Interests in the Trust Estate,  (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 1997-20  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  December  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 any amounts deemed received
     by the Master Servicer pursuant to Section 3.01(d); and

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

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

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

Section 3.02. Permitted Withdrawals from the Certificate Account.

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

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

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

          (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
(other than the Class A-PO and Class A-WIO),  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 Shortfalls in an aggregate amount up
to the sum of the Class A Subclass Unpaid Interest Shortfalls;

     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:

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

     second, to the Class A-1 Certificates  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 (except to the extent provided in applicable
Treasury  regulations) 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 such
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 (or, to the
extent provided in applicable Treasury regulations,  certain trusts in existence
on August 20, 1996 which are eligible to elect to be treated as U.S. Persons).

Section 4.02.     Allocation of Realized Losses.

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

     first, to the Class B-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 A-PO, Class A-WIO, 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-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-PO, 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-PO and
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-PO, 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-PO and  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-PO, 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-PO,  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-PO, Class A-WIO  Certificate,  or a Class M or
Class B Certificate shall be made (other than the transfer of the Class A-PO and
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-PO, 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-PO or 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-PO, 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-PO,  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-PO,  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  Fthe  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-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 November 1, 1997.

Section 11.03. Cut-Off Date Aggregate Principal Balance.

     The Cut-Off Date Aggregate Principal Balance is $170,156,215.85.

Section 11.04. Original Class A Percentage.

     The Original Class A Percentage is 97.49323495%.

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                  $ 165,455,105.00
                      Class A-PO                 $     446,794.38
                      Class A-R                  $         100.00

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

     The Original Class A Non-PO Principal Balance is $165,455,205.00.

Section 11.07. Original Subordinated Percentage.

     The Original Subordinated Percentage is 2.50676505%.

Section 11.08. Original Class M Percentage.

     The Original Class M Percentage is 1.00230145%.

Section 11.09. Original Class M Principal Balance.

     The Original Class M Principal Balance is $1,701,000.00.

Section 11.10 Original Class M Fractional Interest.

     The Original Class M Fractional Interest is 1.50446359%.

Section 11.11 Original Class B-1 Percentage.

     The Original Class B-1 Percentage is 0.60161657%.

Section 11.12. Original Class B-2 Percentage.

     The Original Class B-2 Percentage is 0.25101730%.

Section 11.13. Original Class B-3 Percentage.

     The Original Class B-3 Percentage is 0.30051366%.

Section 11.14. Original Class B-4 Percentage.

     The Original Class B-4 Percentage is 0.15025683%.

Section 11.15. Original Class B-5 Percentage.

     The Original Class B-5 Percentage is 0.20105924%.

Section 11.16. Original Class B Principal Balance.

     The Original Class B Principal Balance is $2,553,216.47.

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               $1,021,000.00
                      Class B-2               $  426,000.00
                      Class B-3               $  510,000.00
                      Class B-4               $  255,000.00
                      Class B-5               $  341,216.47

Section 11.18. Original Class B-1 Fractional Interest.

     The Original Class B-1 Fractional Interest is 0.90284702%.

Section 11.19. Original Class B-2 Fractional Interest.

     The Original Class B-2 Fractional Interest is 0.65182973%.

Section 11.20. Original Class B-3 Fractional Interest.

     The Original Class B-3 Fractional Interest is 0.35131607%.

Section 11.21. Original Class B-4 Fractional Interest.

     The Original Class B-4 Fractional Interest is 0.20105923%.

Section 11.22. Closing Date.

     The Closing Date is November 26, 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 $17,015,621.59 (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-1 Certificates,  Class M Certificates and Class
B Certificates  (other the Class B-2, 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-2, 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-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-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 26th day of November,  1997,  before me, a notary public in and for
the State of New York,  personally  Alan McKenney,  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 26th day of November,  1997,  before me, a notary public in and for
the State of New York, personally appeared Richard Poska, 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 26th day of November,  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 26th day of November,  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 26th day of November,  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 26th day of November,  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
1997-20 Applicable Unscheduled Principal Receipt Period
<TABLE>
<CAPTION>

                                                          Full Unscheduled                Partial Unscheduled
Servicer                                                  Principal Receipts              Principal Receipts
<S>                                                       <C>                             <C>
Norwest Mortgage, Inc. (Exhibit F-1)                      Prior Month                     Prior Month

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

FT Mortgage Companies                                     Mid-Month                       Prior Month

First Union Mortgage Corporation                          Prior Month                     Prior Month

Suntrust Mortgage, Inc.                                   Prior Month                     Prior Month

First Bank National Association                           Prior Month                     Prior Month

The Huntington Mortgage Company                           Prior Month                     Prior Month

Great Financial Bank                                      Mid-Month                       Prior Month

Columbia National, Inc.                                   Mid-Month                       Prior Month
</TABLE>




<PAGE>

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

[UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY   TRUST  COMPANY  TO  THE  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 1997-20 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:   November 1, 1997

CUSIP No.:                          First Distribution Date:  December 26, 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 November 26, 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-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 1997-20 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:   November 1, 1997

CUSIP No.:                           First Distribution Date:  December 26, 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 November 26, 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  November  26,  1997,  at an issue price of
1.47272% 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 November 18, 1997 with respect to the
offering of the Class A-1 and Class A-R  Certificates,  the Class M Certificates
and the Class B-1 and Class B-2 Certificates) used to price this Certificate and
(b)  that  the  interest  rate  at  which  distributions  of  interest  on  this
Certificate  actually will be made will be determined as though the pass-through
rate on this  Certificate  applicable  to the first  Distribution  Date will not
change  thereafter:  (i) the amount of OID as a percentage  of the initial Class
A-WIO Notional  Amount is  approximately  1.06171692%;  (ii) the annual yield to
maturity of this Certificate,  compounded monthly, is approximately  17.86%; and
(iii) the amount of OID  allocable to the short first accrual  period  (November
26, 1997 to  December  25,  1997) as a  percentage  of the  initial  Class A-WIO
Notional   Amount,   calculated   using  the  exact  method,   is  approximately
0.02118867%.

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

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



<PAGE>



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


Dated:

                                         First Union National Bank,
                                           Trust Administrator

                                         By____________________________
                                           Authorized Officer


Countersigned:

First Union National Bank,
  Trust Administrator
By ________________________
   Authorized Officer

<PAGE>


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


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

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




<PAGE>




                        MORTGAGE PASS-THROUGH CERTIFICATE
                           SERIES 1997-20, 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:   November 1, 1997

CUSIP No.:                          First Distribution Date:  December 26, 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-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 November 26, 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-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  Trustee  for  that  purpose  in the  notice  of final
distribution.

     No transfer of a Class A-PO  Certificate  will be made unless such transfer
is exempt from the  registration  requirements of the Securities Act of 1933, as
amended,  and any applicable state securities laws or is made in accordance with
said Act and laws.  In the event that such a  transfer  is desired to be made by
the Holder hereof,  (i) the transferee will be required to execute an investment
letter in the form described in the Agreement and (ii) if such transfer is to be
made within  three  years from the later of (a) the date of initial  issuance of
the  Certificates  or (b) the last  date on which the  Seller  or any  affiliate
thereof was a Holder of the Certificates proposed to be transferred,  and unless
such transfer is made in reliance on Rule 144A of the Securities Act of 1933, as
amended, the 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  November  26,  1997,  at an issue price of
66.34375%  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 November 18, 1997 with respect to the
offering of the Class A-1 and Class A-R  Certificates,  the Class M Certificates
and the 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  33.65625%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  9.13%; and (iii) the
amount of OID allocable to the short first accrual period  (November 26, 1997 to
December  25,  1997) as a percentage  of the initial  principal  balance of this
Certificate, calculated using the exact method, is approximately 0.48773298%.

     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 1997-20, 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:   November 1, 1997

CUSIP No.:                        First Distribution Date:  December 26, 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 November 26, 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 1997-20, 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:   November 1, 1997

CUSIP No.:                           First Distribution Date:  December 26, 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 November 26, 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  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 1997-20, 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:   November 1, 1997

CUSIP No.:                           First Distribution Date:  December 26, 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 November 26, 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.  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  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 1997-20, 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:   November 1, 1997

CUSIP No.:                          First Distribution Date:  December 26, 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 November 26, 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 November 26,  1997,  and based on its issue
price of 93.09375%, including accrued interest, and a stated redemption price at
maturity equal to its initial principal balance (plus one day 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 November 18, 1997 with respect to the
offering of the Class A-1 and Class A-R  Certificates,  the Class M Certificates
and the 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  6.92500000%;  (ii) the annual yield to maturity of
this  Certificate,  compounded  monthly,  is approximately  8.02%; and (iii) the
amount of OID allocable to the short first accrual period  (November 26, 1997 to
December  25,  1997) as a percentage  of the initial  principal  balance of this
Certificate, calculated using the exact method, is approximately 0.05761795%.

     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 1997-20, 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:   November 1, 1997

CUSIP No.:                          First Distribution Date:  December 26, 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 November 26, 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 November 26,  1997,  and based on its issue
price of 83.06875%, including accrued interest, and a stated redemption price at
maturity equal to its initial principal balance (plus one day 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 November 18, 1997 with respect to the
offering of the Class A-1 and Class A-R  Certificates,  the Class M Certificates
and the 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 16.95000000%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  10.12%; and (iii) the
amount of OID allocable to the short first accrual period  (November 26, 1997 to
December  25,  1997) as a percentage  of the initial  principal  balance of this
Certificate, calculated using the exact method, is approximately 0.13331365%.

     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 1997-20, 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:   November 1, 1997

CUSIP No.:                        First Distribution Date:  December 26, 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 November 26, 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 November 26,  1997,  and based on its issue
price of 45.46875%, including accrued interest, and a stated redemption price at
maturity equal to its initial principal balance (plus one day 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 November 18, 1997 with respect to the
offering of the Class A-1 and Class A-R  Certificates,  the Class M Certificates
and the 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 54.55000000%;  (ii) the annual yield to maturity of
this Certificate,  compounded  monthly,  is approximately  23.50%; and (iii) the
amount of OID allocable to the short first accrual period  (November 26, 1997 to
December  25,  1997) as a percentage  of the initial  principal  balance of this
Certificate, calculated using the exact method, is approximately 0.31677501%.

     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 1997-20, 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:   November 1, 1997

CUSIP No.:                         First Distribution Date:  December 26, 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 November 26, 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 1997-20 Certificates]


                      NORWEST ASSET SECURITIES CORPORATION
                       MORTGAGE PASS-THROUGH CERTIFICATES
                                 SERIES 1997-20

     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 November 26, 1997 relating to the issuance
of Mortgage Pass-Through Certificates,  Series 1997-20 (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


230 South Tryon Street                   By:
Charlotte, North Carolina,  28288        Name:
                                         Title:



Address:                                 NORWEST ASSET SECURITIES
                                         CORPORATION
7485 New Horizon Way
Frederick, Maryland  21703               By:
                                         Name:
                                         Title:



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


Address:                                 [CUSTODIAN]

                                         By:
                                         Name:
                                         Title:





<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ____ day of _________,  19__, before me, a notary public in and for
the State of ____________, personally appeared _______________, known to me who,
being   by  me  duly   sworn,   did   depose   and  say  that  he   resides   at
__________________________;   that  he  is  the   __________  of  Norwest  Asset
Securities Corporation a Delaware corporation,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said corporation.



                                  Notary Public



[NOTARIAL SEAL]



<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ____ day of _________,  19__, before me, a notary public in and for
the State of ____________, personally appeared _______________, known to me who,
being   by  me  duly   sworn,   did   depose   and  say  that  he   resides   at
__________________________; that he is the __________ of Norwest Bank Minnesota,
National  Association,  a national banking association,  one of the parties that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said corporation.



                                  Notary Public



[NOTARIAL SEAL]



<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ___ day of ________,  19__,  before me, a notary  public in and for
the State of ____________, personally appeared __________ _________, known to me
who,  being  by  me  duly  sworn,   did  depose  and  say  that  he  resides  at
__________________________;  that he is the  ____________________ of First Union
National Bank, a national banking association,  one of the parties that executed
the  foregoing  instrument;  and that he signed his name thereto by order of the
Board of Directors of said association.



                                  Notary Public




[NOTARIAL SEAL]





<PAGE>



STATE OF                            )
                                    :  ss.:
COUNTY OF                           )

     On this ____ day of  ________,  19 , before me, a notary  public in and for
the State of __________,  personally appeared __________ __________, known to me
who,  being  by  me  duly  sworn,   did  depose  and  say  that  he  resides  at
__________________________;   that   he  is   the   _______________________   of
______________________,  a  _________________________,  one of the parties  that
executed the foregoing instrument;  and that he signed his name thereto by order
of the Board of Directors of said association.



                                  Notary Public

 [NOTARIAL SEAL]


<PAGE>




                                   EXHIBIT F-1


            [Schedule of Mortgage Loans Serviced by Norwest Mortgage
                 from locations other than Frederick, Maryland]

NASCOR
NMI / 1997-20  Exhibit F-1
15 YEAR FIXED RATE RELOCATION AND NON-RELOCATION LOANS



<TABLE>
<CAPTION>

                                                                                   NET
MORTGAGE                                                            MORTGAGE    MORTGAGE    CURRENT    ORIGINAL    SCHEDULED
LOAN                                           ZIP      PROPERTY    INTEREST    INTEREST    MONTHLY     TERM TO    MATURITY
NUMBER             CITY           STATE       CODE        TYPE        RATE        RATE      PAYMENT    MATURITY      DATE
- ------             ----           -----       ----        ----        ----        ----      -------    --------      ----
<S>        <C>                      <C>       <C>          <C>        <C>         <C>      <C>            <C>      <C>
6283652    BENICIA                  CA        94510        SFD        7.625       7.359    $2,408.19      180      1-Sep-12
6289347    EDINA                    MN        55439        SFD        8.000       7.734    $4,921.61      180      1-Aug-12
6295007    ROCHESTER                MN        55902        SFD        7.250       6.984    $3,149.75      180      1-Aug-12
6300637    AUSTIN                   TX        78746        PUD        7.500       7.234    $2,075.54      180      1-Sep-12
6310150    KULA                     HI        96790        SFD        7.375       7.109    $3,799.28      180      1-Oct-12
6315288    COUPEVILLE               WA        98239        SFD        7.500       7.234    $3,012.79      180      1-Sep-12
6319752    ROSELLE PARK             NJ        07204        SFD        8.000       7.734     $969.99       180      1-Jul-12
6321420    SAN DIEGO                CA        92103        SFD        7.125       6.859    $3,949.42      180      1-Aug-12
6325472    WARREN                   NJ        07059        SFD        7.750       7.484    $4,141.61      180      1-Oct-12
6328255    PLACITAS                 NM        87043        SFD        7.875       7.609    $3,604.11      180      1-Aug-12
6328937    MAMMOTH LAKES            CA        93546        SFD        7.375       7.109    $5,519.54      180      1-Aug-12
6331829    NORTH FALMOUTH           MA        02541        SFD        7.375       7.109    $2,285.09      180      1-Jul-12
6340402    PRINCETON                NJ        08540        SFD        7.500       7.234    $5,969.96      180      1-Sep-12
6353396    INCLINE VILLAGE          NV        89451        LCO        8.000       7.734     $929.85       180      1-Jun-12
6355629    WILLMAR                  MN        56201        SFD        7.875       7.609    $3,319.57      180      1-Jun-12
6358223    STRATHAM                 NH        03885        SFD        8.000       7.734    $2,551.59      180      1-Aug-12
6368079    EDEN PRAIRIE             MN        55344        SFD        7.625       7.359    $7,473.04      180      1-Aug-12
6368720    BERNARDS TOWNSHIP        NJ        07920        SFD        7.750       7.484    $2,353.19      180      1-Sep-12
6368972    GOLDEN                   CO        80401        SFD        7.500       7.234    $2,075.77      180      1-Sep-12
6369311    BILLINGS                 MT        59101        SFD        7.750       7.484    $2,447.32      180      1-Oct-12
6372446    AVALON                   NJ        08202        SFD        7.875       7.609    $2,655.66      180      1-Jul-12
6377935    ROCHESTER                MN        55902        SFD        7.625       7.359    $2,862.17      180      1-Aug-12
6386866    BEDFORD                  NH        03110        SFD        7.250       6.984    $2,282.16      180      1-Aug-12
6392150    MESA                     AZ        85202        SFD        7.750       7.484    $2,092.46      180      1-Jul-12
6393514    WESTBORO                 MA        01581        SFD        8.000       7.734    $3,268.33      180      1-Aug-12
6393773    WAYZATA                  MN        55391        SFD        7.250       6.984    $2,179.00      180      1-Aug-12
6394786    PHOENIX                  AZ        85027        SFD        7.875       7.609    $2,655.66      180      1-Jul-12
6396262    DENVER                   CO        80218        SFD        7.750       7.484    $2,861.48      180      1-Jul-12
6400948    BOZEMAN                  MT        59715        SFD        7.375       7.109    $3,219.73      180      1-Aug-12
6405230    ELKHORN                  NE        68022        SFD        7.625       7.359    $2,335.32      180      1-Aug-12
6408727    SHOREVIEW                MN        55126        SFD        7.375       7.109    $2,336.61      180      1-Aug-12
6408880    BOCA RATON               FL        33496        SFD        7.500       7.234    $1,854.02      180      1-Aug-12
6408925    FOREST LAKE              MN        55025        SFD        7.500       7.234    $5,388.26      180      1-Sep-12
6408943    BOULDER                  CO        80301        SFD        6.250       5.984    $1,840.03      180      1-Aug-12
6410329    SAN JOSE                 CA        95125        SFD        7.375       7.109    $2,051.43      180      1-Aug-12
6410490    LAKE JUNALUSKA           NC        28745        SFD        7.375       7.109    $2,314.53      180      1-Aug-12
6411844    MOUNTAIN VIEW            CA        94041        SFD        7.125       6.859    $2,762.79      180      1-Oct-12
6413825    EAST GULL LAKE           MN        56401        SFD        7.875       7.609    $2,845.35      180      1-Aug-12
6414327    BOCA RATON               FL        33433        PUD        7.500       7.234    $2,730.05      180      1-Sep-12
6414813    CORONA DEL MAR           CA        92625        SFD        7.625       7.359    $3,269.45      180      1-Aug-12
6416457    ENCINITAS                CA        92024        SFD        7.875       7.609    $2,214.63      180      1-Aug-12
6421002    OAKLAND                  MD        21550        SFD        7.875       7.609    $2,812.15      180      1-Sep-12
6421152    MONTVILLE                NJ        07082        SFD        7.625       7.359    $4,670.65      180      1-Aug-12
6422909    MILLBURN                 NJ        07078        SFD        8.125       7.859    $3,957.45      180      1-Aug-12
6423623    BEDMINSTER               NJ        07921        LCO        7.250       6.984    $2,185.39      180      1-Sep-12
6424525    EDWARDS                  CO        81632        SFD        8.000       7.734    $4,061.52      180      1-Oct-12
6428330    DENVER                   CO        80218        SFD        7.125       6.859    $5,299.11      180      1-Aug-12
6428681    BETHESDA                 MD        20814        SFD        7.625       7.359    $2,568.86      180      1-Oct-12
6455508    TRABUCO CANYON           CA        92679        SFD        6.875       6.609    $2,408.01      180      1-Oct-12
6456990    ELK RIVER                MN        55330        SFD        7.750       7.484    $2,221.41      180      1-Sep-12
6467195    SAINT HELENA             CA        95474        SFD        7.500       7.234    $5,983.87      180      1-Oct-12
6468858    BELVEDERE                CA        94920        SFD        7.250       6.984    $6,590.87      180      1-Sep-12
6469395    LOS ALTOS HILLS          CA        94024        SFD        7.500       7.234    $8,343.11      180      1-Sep-12
6497671    CARSON CITY              NV        89703        SFD        7.750       7.484    $4,329.87      180      1-Sep-12
6504193    ORONO                    MN        55391        SFD        7.250       6.984    $4,073.66      180      1-Sep-12
6994857    LOCKNEY                  TX        79241        SFD        7.750       7.484    $2,353.19      180      1-Jan-12
6998875    NORTH BETHESDA           MD        20852        SFD        7.750       7.484    $2,230.82      180      1-Jul-12
6998880    RALEIGH                  NC        27614        SFD        7.750       7.484    $2,466.14      180      1-Jun-12
6998990    ROCHESTER                MN        55902        SFD        7.750       7.484    $2,355.07      180      1-Aug-12
6998993    HILLSBOROUGH TWP         NJ        08502        SFD        7.375       7.109    $2,023.83      180      1-Jul-12
6998994    FT MYERS                 FL        33907        SFD        7.750       7.484    $2,484.03      180      1-Aug-12
6999010    VADNAIS HEIGHTS          MN        55127        SFD        7.375       7.109    $2,646.62      180      1-Jul-12
6999054    MEDIA                    PA        19063        SFD        7.500       7.234    $2,391.69      180      1-Sep-12
6999056    SAN JOSE                 CA        95138        SFD        7.250       6.984    $3,377.59      180      1-Sep-12
6999069    BERNARDS TWNSP           NJ        07920        SFD        6.750       6.484    $2,418.46      180      1-Sep-12
6999104    LA CROSSE                WI        54601        SFD        8.125       7.859    $2,503.49      180      1-Aug-12
6999115    DEL VALLE                TX        78617        SFD        7.875       7.609    $2,845.35      180      1-Jul-12
6999116    MINNEAPOLIS              MN        55403        PUD        7.500       7.234    $5,367.40      180      1-Aug-12
6999129    PARADISE VALLEY          AZ        85253        SFD        7.000       6.734    $8,988.28      180      1-Oct-12
6999135    SAN JOSE                 CA        95138        SFD        7.375       7.109    $3,069.32      180      1-Aug-12
6999137    THIEF RIVER FALLS        MN        56701        SFD        7.625       7.359    $2,321.31      180      1-Sep-12
6999159    ROCHESTER                MN        55902        SFD        7.875       7.609    $2,655.66      180      1-Jul-12
6999175    GAITHERSBURG             MD        20879        SFD        7.750       7.484    $2,351.70      180      1-Jul-12
6999180    ARGYLE                   TX        76226        SFD        7.375       7.109    $2,899.60      180      1-Sep-12
6999198    EAGAN                    MN        55123        SFD        7.625       7.359    $2,931.30      180      1-Apr-12
6999206    NEENAH                   WI        54956        SFD        7.625       7.359    $4,072.81      180      1-Sep-12
6999220    SALT LAKE CITY           UT        84117        SFD        7.625       7.359    $2,185.86      180      1-Sep-12
</TABLE>


COUNT:   77
WAC:      7.53670499
WAM:    177.337721
WALTV:   69.41394749






<PAGE>
<TABLE>
<CAPTION>
           CUT-OFF
MORTGAGE    DATE                                MORTGAGE                  T.O.P.      MASTER
LOAN      PRINCIPAL                            INSURANCE     SERVICE     MORTGAGE     SERVICE
NUMBER     BALANCE       LTV        SUBSIDY       CODE         FEE         LOAN         FEE
- ------     -------       ---        -------       ----         ---         ----         ---
<S>      <C>            <C>         <C>        <C>            <C>        <C>           <C>  
6283652  $256,070.73    80.00                                 0.250                    0.016
6289347  $510,505.33    79.84                                 0.250                    0.016
6295007  $341,826.27    80.00                                 0.250                    0.016
6300637  $222,539.39    54.21                                 0.250                    0.016
6310150  $411,738.95    68.83                                 0.250                    0.016
6315288  $323,030.79    67.71                                 0.250                    0.016
6319752  $100,314.92    70.00                                 0.250                    0.016
6321420  $431,893.70    80.00                                 0.250                    0.016
6325472  $438,700.06    69.29                                 0.250                    0.016
6328255  $376,647.01    80.00                                 0.250                    0.016
6328937  $594,470.03    66.67                                 0.250                    0.016
6331829  $245,338.04    80.00                                 0.250                    0.016
6340402  $640,097.92    70.00                                 0.250                    0.016
6353396  $95,875.22     70.00                                 0.250                    0.016
6355629  $344,818.97    70.00                                 0.250                    0.016
6358223  $264,669.77    49.91                                 0.250                    0.016
6368079  $792,785.23    50.00                                 0.250                    0.016
6368720  $248,518.01    55.56                                 0.250                    0.016
6368972  $222,563.23    80.00                                 0.250                    0.016
6369311  $259,231.85    80.00                                 0.250                    0.016
6372446  $276,695.01    80.00                                 0.250                    0.016
6377935  $303,636.76    79.17                                 0.250                    0.016
6386866  $247,670.75    71.43                                 0.250                    0.016
6392150  $219,647.36    95.00                      13         0.250                    0.016
6393514  $338,910.85    95.00                      06         0.250                    0.016
6393773  $235,771.21    62.83                                 0.250                    0.016
6394786  $276,695.01    74.67                                 0.250                    0.016
6396262  $300,372.45    80.00                                 0.250                    0.016
6400948  $346,774.19    70.00                                 0.250                    0.016
6405230  $246,435.89    79.37                                 0.250                    0.016
6408727  $251,658.97    80.00                                 0.250                    0.016
6408880  $198,176.59    64.52                                 0.250                    0.016
6408925  $577,728.13    75.00                                 0.250                    0.016
6408943  $212,421.73    53.65                                 0.250                    0.016
6410329  $219,941.62    50.68                                 0.250                    0.016
6410490  $249,281.09    80.00                                 0.250                    0.016
6411844  $304,048.15    67.03                                 0.250                    0.016
6413825  $297,352.91    59.64                                 0.250                    0.016
6414327  $292,715.60    95.00                      33         0.250                    0.016
6414813  $346,843.56    46.67                                 0.250                    0.016
6416457  $231,439.68    77.83                                 0.250                    0.016
6421002  $294,761.58    73.94                                 0.250                    0.016
6421152  $494,481.22    62.11                                 0.250                    0.016
6422909  $407,452.17    73.39                                 0.250                    0.016
6423623  $237,917.51    90.00                      33         0.250                    0.016
6424525  $423,771.81    32.69                                 0.250                    0.016
6428330  $579,490.40    75.00                                 0.250                    0.016
6428681  $274,178.54    68.75                                 0.250                    0.016
6455508  $269,138.87    79.88                                 0.250                    0.016
6456990  $234,601.01    80.00                                 0.250                    0.016
6467195  $637,489.59    61.48                                 0.250                    0.016
6468858  $717,528.96    48.13                                 0.250                    0.016
6469395  $894,546.79    48.65                                 0.250                    0.016
6497671  $457,273.15    74.80                                 0.250                    0.016
6504193  $443,486.54    75.00                                 0.250                    0.016
6994857  $233,099.83    84.75                      33         0.250                    0.016
6998875  $234,171.96    63.20                                 0.250                    0.016
6998880  $258,079.39    52.54                                 0.250                    0.016
6998990  $247,968.06    90.00                      12         0.250                    0.016
6998993  $215,269.66    64.99                                 0.250                    0.016
6998994  $261,545.83    79.99                                 0.250                    0.016
6999010  $284,153.63    73.77                                 0.250                    0.016
6999054  $256,436.75    80.00                                 0.250                    0.016
6999056  $367,708.76    74.81                                 0.250                    0.016
6999069  $271,532.75    80.00                                 0.250                    0.016
6999104  $257,755.66    74.29                                 0.250                    0.016
6999115  $296,458.94    75.00                                 0.250                    0.016
6999116  $573,721.19    66.17                                 0.250                    0.016
6999129  $996,845.05    45.45                                 0.250                    0.016
6999135  $330,574.90    79.99                                 0.250                    0.016
6999137  $247,010.68    70.00                                 0.250                    0.016
6999159  $276,695.01    72.73                                 0.250                    0.016
6999175  $246,860.73    80.00                                 0.250                    0.016
6999180  $313,269.22    80.00                                 0.250                    0.016
6999198  $307,112.06    79.99                                 0.250                    0.016
6999206  $433,386.94    80.00                                 0.250                    0.016
6999220  $231,941.24    90.00                      33         0.250                    0.016

         $26,603,569.31
</TABLE>

<PAGE>




                                   EXHIBIT F-2


[Schedule of Mortgage Loans Serviced by Norwest Mortgage in Frederick, Maryland]

NASCOR
NMI / 1997-20  Exhibit F-2
15 YEAR FIXED RATE RELOCATION AND NON-RELOCATION LOANS



<TABLE>
<CAPTION>

                                                                            NET
MORTGAGE                                                       MORTGAGE  MORTGAGE   CURRENT   ORIGINAL  SCHEDULED
LOAN                                        ZIP     PROPERTY   INTEREST  INTEREST   MONTHLY    TERM TO   MATURITY
NUMBER      CITY                 STATE      CODE      TYPE       RATE      RATE     PAYMENT   MATURITY     DATE
- ------      ----                 -----      ----      ----       ----      ----     -------   --------     ----
<S>         <C>                   <C>      <C>         <C>      <C>        <C>     <C>           <C>     <C>
4549134     MIAMI                 FL       33183       SFD      8.250      7.984   $2,560.21     180     1-Nov-11
4568392     MONTVALE              NJ       07645       SFD      6.750      6.484   $3,837.41     180     1-Nov-12
4571052     MORGANVILLE           NJ       07751       SFD      7.375      7.109   $3,449.72     180     1-Nov-12
4573062     ZIONSVILLE            IN       46077       SFD      6.875      6.609   $3,236.99     180     1-Oct-12
4580620     WEST WINDSOR          NJ       08550       SFD      7.375      7.109   $2,566.59     180     1-Oct-12
4582699     DAKOTA DUNES          SD       57049       SFD      7.500      7.234   $2,471.42     180     1-Nov-12
4587562     OMAHA                 NE       68116       SFD      8.375      8.109   $3,156.60     180     1-Sep-12
4591957     NORTH WALES           PA       19454       SFD      8.375      8.109   $2,882.43     180     1-Nov-12
4596333     LAS VEGAS             NV       89134       SFD      7.500      7.234   $2,057.97     180     1-Oct-12
4597157     HUNTINGTON STATION    NY       11746       SFD      7.600      7.334   $1,133.24     180     1-May-12
4598309     DALLAS                TX       75230       SFD      7.875      7.609   $2,962.42     167     1-May-11
4598956     MANITOU SPRINGS       CO       80829       SFD      7.875      7.609   $2,845.35     180     1-Jun-12
4600524     SETAUKET              NY       11733       LCO      8.125      7.859   $1,305.67     180     1-Nov-12
4606962     LAKE FOREST           IL       60045       SFD      7.000      6.734   $4,269.44     180     1-Oct-12
4609572     ESCONDIDO             CA       92025       SFD      7.000      6.734   $2,247.08     180     1-Oct-12
4615375     BROOKHAVEN            NY       11719       SFD      7.750      7.484   $1,995.51     180     1-Nov-12
4616383     SAG HARBOR            NY       11963       SFD      7.875      7.609    $663.92      180     1-Nov-12
4616522     ATLANTA               GA       30306       SFD      7.250      6.984   $2,738.59     180     1-Sep-12
4616667     MAPLEWOOD TOWNSHIP    NJ       07040       SFD      7.625      7.359   $2,288.62     180     1-Oct-12
4617050     ACWORTH               GA       30101       SFD      7.500      7.234   $2,549.29     180     1-Jul-12
4617153     HENDERSON             NV       89015       SFD      7.250      6.984   $2,921.16     180     1-Aug-12
4617901     LONGMEADOW            MA       01106       SFD      7.625      7.359   $3,736.52     180     1-Aug-12
4618130     MUTTONTOWN            NY       11791       SFD      7.000      6.734   $4,314.38     180     1-Oct-12
4618410     PLEASANTVILLE         NY       10570       SFD      7.875      7.609   $5,282.87     180     1-Oct-12
4618416     NORMAN                OK       73071       SFD      8.000      7.734   $2,674.87     180     1-Aug-12
4619236     STANTON               NJ       08885       SFD      7.250      6.984   $2,227.39     180     1-Oct-12
4619304     EVERETT               WA       98203       SFD      7.500      7.234   $2,781.04     180     1-Aug-12
4619889     HOUSTON               TX       77005       SFD      7.125      6.859   $2,930.37     180     1-Aug-12
4620156     CERRITOS              CA       90703       SFD      8.000      7.734   $2,503.81     180     1-Jul-12
4620473     CONGERS               NY       10920       PUD      8.375      8.109   $1,251.11     180     1-Oct-12
4620804     JACKSONVILLE          FL       32225       SFD      7.500      7.234   $2,781.04     180     1-Nov-12
4621839     SAINT DAVIDS          PA       19087       SFD      7.125      6.859   $5,389.70     180     1-Oct-12
4621882     SOLON                 OH       44139       SFD      7.250      6.984   $2,400.83     180     1-Oct-12
4621921     NEW PROVIDENCE        NJ       07974       SFD      6.750      6.484   $3,406.91     180     1-Sep-12
4623095     PELHAM                NY       10803       SFD      7.375      7.109   $2,272.22     180     1-Sep-12
4623322     DUXBURY               MA       02331       SFD      7.875      7.609   $2,560.82     180     1-Sep-12
4623424     OYSTER BAY            NY       11771       SFD      8.000      7.734   $1,481.27     180     1-Nov-12
4623876     HOLMDEL               NJ       07733       SFD      7.375      7.109   $2,276.82     180     1-Oct-12
4624389     CHINO HILLS           CA       91709       SFD      7.375      7.109   $2,391.81     180     1-Oct-12
4624393     WAYNE                 NJ       07470       SFD      7.625      7.359   $3,073.29     180     1-Nov-12
4625163     NEENAH                WI       54956       SFD      8.125      7.859   $2,561.27     180     1-Nov-12
4625310     COOPER CITY           FL       33026       SFD      7.500      7.234   $2,241.52     180     1-Oct-12
4625447     WARREN                NJ       07059       SFD      7.000      6.734   $2,869.06     180     1-Oct-12
4625639     ROANOKE               VA       24018       SFD      7.250      6.984   $2,482.99     180     1-Sep-12
4626164     GRAND RAPIDS          MI       49502       SFD      7.750      7.484   $1,882.56     180     1-Nov-12
4626646     JACKSONVILLE          FL       32244       SFD      7.375      7.109   $2,207.82     180     1-Sep-12
4626696     RALEIGH               NC       27615       SFD      7.250      6.984   $2,464.73     180     1-Nov-12
4627211     WARREN                NJ       07059       SFD      6.875      6.609   $3,531.75     180     1-Nov-12
4627278     POUND RIDGE           NY       10576       SFD      8.250      7.984   $3,230.57     180     1-Oct-12
4627367     WEST FALMOUTH         MA       02540       SFD      7.000      6.734   $2,759.41     180     1-Sep-12
4628181     ANDOVER               NJ       07821       SFD      6.750      6.484   $2,608.28     180     1-Oct-12
4628378     VIRGINIA BEACH        VA       23451       HCO      7.250      6.984   $1,004.15     180     1-Aug-12
4628453     GAITHERSBURG          MD       20882       SFD      7.375      7.109   $2,364.21     180     1-Oct-12
4628516     HICKSVILLE            NY       11801       SFD      7.550      7.284   $1,441.28     180     1-Mar-12
4628555     HOUSTON               TX       77014       SFD      7.750      7.484    $811.38      180     1-Jun-12
4628945     FLORAL PARK           NY       11004       SFD      7.750      7.484   $1,637.82     180     1-Oct-12
4629185     LAKE FOREST           IL       60045       SFD      7.500      7.234   $4,635.07     180     1-Oct-12
4629669     SARATOGA              CA       95070       SFD      7.000      6.734   $3,864.97     180     1-Oct-12
4629892     LECANTO               FL       34461       SFD      7.250      6.984   $2,172.62     180     1-Nov-12
4630071     MCHENRY               IL       60050       SFD      7.375      7.109   $2,345.81     180     1-Oct-12
4630217     SEVIERVILLE           TN       37862       PUD      7.375      7.109    $358.78      180     1-Oct-12
4630237     PALISADES PARK        NJ       07650       SFD      7.750      7.484   $1,016.58     180     1-Oct-12
4630309     ALPHARETTA            GA       30202       SFD      6.500      6.234   $3,048.88     180     1-Oct-12
4630339     STAMFORD              CT       06902       SFD      7.000      6.734   $3,244.78     180     1-Oct-12
4630359     SCOTTSDALE            AZ       85255       SFD      7.250      6.984   $5,641.49     180     1-Oct-12
4630524     FORT COLLINS          CO       80524       SFD      7.250      6.984   $2,346.06     180     1-Sep-12
4630716     PARKLAND              FL       33067       SFD      7.125      6.859   $2,083.42     180     1-Oct-12
4631154     LIVERMORE             CA       94550       SFD      7.750      7.484   $2,070.81     180     1-Sep-12
4631235     NORTH CALDWELL        NJ       07006       SFD      7.375      7.109   $2,160.90     180     1-Oct-12
4631448     HUMBOLDT              AZ       86329       SFD      7.875      7.609   $3,556.69     180     1-Sep-12
4631449     NASHVILLE             TN       37205       SFD      7.375      7.109   $2,511.40     180     1-Sep-12
4631501     AGOURA HILLS          CA       91301       SFD      7.375      7.109   $2,076.27     180     1-Nov-12
4631559     SOUTH ORANGE          NJ       07079       SFD      8.000      7.734   $4,013.74     180     1-Oct-12
4631563     HANOVER               MA       02339       SFD      6.625      6.359   $4,170.48     180     1-Oct-12
4631700     WESTON                FL       33327       SFD      7.375      7.109   $4,668.61     180     1-Oct-12
4632151     LOS ANGELES           CA       91605       SFD      7.625      7.359    $836.98      180     1-Sep-12
4632195     SEATTLE               WA       98103       SFD      7.500      7.234   $2,965.70     180     1-Sep-12
4632210     CHAPPAQUA             NY       10514       SFD      7.375      7.109   $2,943.76     180     1-Nov-12
4632250     FLUSHING              NY       11358       SFD      7.750      7.484   $1,054.23     180     1-Oct-12
4632391     ATLANTA               GA       30339       SFD      7.250      6.984   $5,933.61     180     1-Sep-12
4632424     DANVILLE              CA       94526       SFD      7.125      6.859   $2,681.27     180     1-Oct-12
4632510     HOUSTON               TX       77079       SFD      7.375      7.109   $2,443.32     180     1-Oct-12
4632643     GILROY                CA       95020       SFD      7.375      7.109   $2,529.79     180     1-Sep-12
4632802     LAKE PARK             FL       33403       HCO      7.750      7.484    $564.77      180     1-Sep-12
4632809     TORRANCE              CA       90503       SFD      7.200      6.934   $2,783.84     180     1-Jul-12
4632852     SCHAUMBURG            IL       60173       SFD      7.950      7.684   $3,391.86     180     1-Jul-12
4632904     ALAMO                 CA       94507       SFD      7.250      6.984   $3,651.45     180     1-Sep-12
4632929     MEMPHIS               TN       38117       SFD      6.625      6.359   $3,072.98     180     1-Sep-12
4633072     GRAND BLANC           MI       48439       SFD      6.750      6.484   $2,433.51     180     1-Sep-12
4633077     FARMINGTON            UT       84025       SFD      7.250      6.984   $2,829.88     180     1-Sep-12
4633140     MONTVILLE             NJ       07045       SFD      7.000      6.734   $2,426.84     180     1-Oct-12
4633406     NEW ALBANY            OH       43054       SFD      7.000      6.734   $2,373.81     180     1-Oct-12
4633549     MALVERN               PA       19355       SFD      6.875      6.609   $2,229.64     180     1-Sep-12
4633557     BRIARCLIFF MANOR      NY       10510       SFD      7.250      6.984   $2,601.66     180     1-Oct-12
4633586     MOUNT KISCO           NY       10549       SFD      7.250      6.984   $2,110.54     180     1-Oct-12
4633655     SAN FRANCISCO         CA       94118       SFD      7.500      7.234   $8,537.78     180     1-Sep-12
4633766     FREEPORT              IL       61032       SFD      7.500      7.234   $2,039.43     180     1-Sep-12
4633940     LEAWOOD               KS       66211       SFD      7.375      7.109   $3,173.74     180     1-Sep-12
4633945     WAUCONDA              IL       60084       SFD      7.375      7.109   $2,189.42     180     1-Nov-12
4634075     MARIETTA              GA       30067       SFD      7.250      6.984   $2,136.10     180     1-Oct-12
4634430     FALLBROOK             CA       92028       SFD      7.250      6.984   $3,651.45     180     1-Sep-12
4634512     SAINT JAMES           NY       11780       SFD      7.875      7.609   $3,936.07     180     1-Nov-12
4634640     COLLIERVILLE          TN       38017       SFD      6.875      6.609   $1,954.50     180     1-Oct-12
4634955     FORT SALONGA          NY       11768       SFD      7.875      7.609   $2,797.93     180     1-Oct-11
4634978     PLEASANTON            CA       94566       SFD      7.250      6.984   $3,112.87     180     1-Oct-12
4634989     FREMONT               CA       94539       SFD      7.500      7.234   $3,244.55     180     1-Sep-12
4635043     RIDGEFIELD            CT       06877       SFD      7.125      6.859   $2,443.03     180     1-Oct-12
4635101     CINCINNATI            OH       45243       SFD      7.500      7.234   $7,416.10     180     1-Oct-12
4635411     SANTA CRUZ            CA       95060       SFD      7.625      7.359   $3,633.77     180     1-Oct-12
4635506     WASHINGTON            NJ       07675       SFD      7.875      7.609   $1,434.06     180     1-Sep-12
4635605     ORANGE                CA       92867       SFD      7.750      7.484   $2,343.78     180     1-Oct-12
4635641     DALLAS                TX       75243       SFD      7.250      6.984   $2,058.51     180     1-Oct-12
4636336     CHAGRIN FALLS         OH       44022       SFD      7.000      6.734   $2,630.43     180     1-Oct-12
4636472     ABBEVILLE             AL       36310       SFD      8.375      8.109   $2,331.17     180     1-Oct-12
4636723     EAST HAMPTON          NY       11937       SFD      7.875      7.609   $2,560.82     180     1-Sep-12
4636754     ORCAS ISLAND          WA       98243       SFD      7.500      7.234   $2,836.66     180     1-Nov-12
4637007     WADSWORTH             IL       60083       SFD      7.875      7.609   $3,642.05     180     1-Oct-12
4637186     ANNAPOLIS             MD       21401       SFD      7.250      6.984   $3,468.88     180     1-Oct-12
4637343     HAYESVILLE            NC       28904       SFD      7.875      7.609   $2,428.04     180     1-Oct-12
4637397     WEST WINDSOR          NJ       08540       SFD      7.875      7.609   $2,845.35     180     1-Oct-12
4638184     HUNTINGTON            NY       11743       SFD      8.000      7.734   $3,402.12     180     1-Jul-12
4638229     MASTIC                NY       11950       SFD      7.375      7.109   $7,543.38     180     1-Nov-12
4638534     LODI                  CA       95240       SFD      7.250      6.984   $3,423.24     180     1-Nov-12
4638601     SCARSDALE             NY       10583       SFD      7.125      6.859   $3,170.41     180     1-Nov-12
4638766     BASALT                CO       81621       SFD      7.750      7.484    $517.71      180     1-Oct-12
4638819     FRANKLIN              MI       48025       SFD      7.250      6.984   $2,286.73     180     1-Nov-12
4638863     SNOHOMISH             WA       98290       SFD      7.750      7.484   $2,792.77     180     1-Oct-12
4638991     ROCK HILL             NY       12775       SFD      7.750      7.484   $3,765.11     180     1-Oct-12
4639289     EDINA                 MN       55424       SFD      7.000      6.734   $3,370.61     180     1-Oct-12
4639418     MAPLEWOOD TOWNSHIP    NJ       07040       SFD      7.625      7.359   $2,606.23     180     1-Oct-12
4639459     WESTON                CT       06880       SFD      6.750      6.484   $5,309.46     180     1-Nov-12
4639657     COLTS NECK            NJ       07722       SFD      7.250      6.984   $2,432.78     180     1-Nov-12
4639739     SAN FRANCISCO         CA       94116       SFD      7.125      6.859   $2,672.21     180     1-Nov-12
4639778     SARATOGA              CA       95070       SFD      7.625      7.359   $3,596.41     180     1-Oct-12
4640290     FLOWER MOUND          TX       75028       SFD      7.375      7.109   $2,667.78     180     1-Oct-12
4640485     OVERLAND PARK         KS       66209       SFD      7.500      7.234   $5,182.00     180     1-Nov-12
4640491     RIDGELAND             MS       39157       SFD      7.375      7.109   $2,664.10     180     1-Sep-12
4640615     KIRKLAND              WA       98033       LCO      7.500      7.234   $3,350.23     180     1-Nov-12
4640671     PLAINFIELD            IN       46168       SFD      7.250      6.984   $2,008.30     180     1-Oct-12
4640676     RALEIGH               NC       27613       SFD      7.000      6.734   $3,227.70     180     1-Oct-12
4640990     GERMANTOWN            TN       38138       SFD      6.875      6.609   $2,408.01     180     1-Nov-12
4641170     DIX HILLS             NY       11746       SFD      7.875      7.609   $1,464.41     180     1-Oct-12
4641231     AUSTIN                TX       78746       SFD      7.625      7.359   $2,288.62     180     1-Oct-12
4641237     PONTE VEDRA BEACH     FL       32082       SFD      7.250      6.984   $2,282.16     180     1-Nov-12
4641459     BEND                  OR       97702       SFD      7.500      7.234   $3,012.80     180     1-Nov-12
4641485     ISLAMORADA            FL       33036       SFD      7.875      7.609   $4,021.43     180     1-Nov-12
4641489     LOS GATOS             CA       95032       SFD      7.375      7.109   $3,035.75     180     1-Oct-12
4641608     DAYTON                TN       37321       SFD      7.500      7.234   $2,085.78     180     1-Nov-12
4641704     KNOXVILLE             TN       37919       SFD      7.500      7.234   $2,447.32     180     1-Oct-12
4641893     ALBUQUERQUE           NM       87111       SFD      6.625      6.359   $3,209.95     180     1-Nov-12
4641920     LUBBOCK               TX       79424       SFD      7.375      7.109   $2,575.79     180     1-Oct-12
4642166     HUMBLE                TX       77346       SFD      7.625      7.359   $2,241.92     180     1-Oct-12
4642372     SANDY                 UT       84093       SFD      7.750      7.484   $3,765.10     180     1-Oct-12
4642711     DANVILLE              VA       24541       SFD      7.750      7.484   $2,775.83     180     1-Aug-12
4642718     AURORA                OH       44202       SFD      7.000      6.734   $3,954.85     180     1-Sep-12
4642725     RALEIGH               NC       27612       SFD      7.125      6.859   $3,949.43     180     1-Aug-12
4642737     TUCSON                AZ       85718       SFD      7.500      7.234   $2,432.49     180     1-Aug-12
4642750     MISSION HILLS         KS       66208       SFD      7.750      7.484   $4,363.75     180     1-Aug-12
4642766     PLANO                 TX       75093       SFD      7.000      6.734   $3,868.56     180     1-Sep-12
4642827     ELMHURST              IL       60126       SFD      7.750      7.484   $2,089.64     180     1-Aug-12
4642832     PANORA                IA       50216       SFD      7.375      7.109   $2,318.21     180     1-Sep-12
4642836     MELBOURNE             FL       32940       SFD      7.750      7.484   $2,426.61     180     1-Jul-12
4642842     HOLLY SPRINGS         NC       27540       SFD      7.375      7.109   $2,166.42     180     1-Aug-12
4642852     GREENSBORO            NC       27455       SFD      7.125      6.859   $2,264.58     180     1-Aug-12
4642858     HIGHLANDS             NC       28741       SFD      7.750      7.484   $2,823.83     180     1-Jul-12
4642859     FAYETTEVILLE          NC       28303       SFD      7.250      6.984   $2,219.17     180     1-Aug-12
4642917     KEY WEST              FL       33040       SFD      7.625      7.359   $3,736.52     180     1-Nov-12
4643041     WHITE PLAINS          NY       10606       SFD      7.125      6.859   $3,097.95     180     1-Nov-12
4643225     CROSSVILLE            TN       38555       SFD      7.125      6.859   $2,536.33     180     1-Oct-12
4643394     BRYN MAWR             PA       19010       SFD      7.500      7.234   $4,403.31     180     1-Nov-12
4643604     JAMUL                 CA       91935       SFD      7.500      7.234   $2,565.97     180     1-Sep-12
4643884     SALT LAKE CITY        UT       84103       SFD      7.500      7.234   $2,641.99     180     1-Oct-12
4643940     NASHVILLE             TN       37204       SFD      7.500      7.234   $2,521.94     180     1-Nov-12
4644058     SKOKIE                IL       60076       SFD      7.650      7.384    $467.78      180     1-Aug-12
4644064     TARPON SPRINGS        FL       34689       LCO      7.850      7.584    $435.63      180     1-Aug-12
4644073     BEVERLY HILLS         CA       90210       SFD      7.250      6.984   $1,825.73     180     1-Aug-12
4644088     OAKBROOK              IL       60521       SFD      7.400      7.134   $3,224.69     180     1-Aug-12
4644108     MARINA DEL REY        CA       90292       SFD      7.550      7.284   $5,272.29     180     1-Aug-12
4644112     BARTLETT              IL       60103       SFD      7.800      7.534   $2,171.53     180     1-Aug-12
4644117     SAN MARINO            CA       91108       SFD      7.000      6.734   $5,033.44     180     1-Aug-12
4644128     LOS ANGELES           CA       91356       SFD      7.300      7.034   $1,373.53     180     1-Aug-12
4644132     ANAHEIM               CA       92807       SFD      7.150      6.884   $2,213.66     180     1-Aug-12
4644139     CHICAGO               IL       60613       HCO      8.100      7.834    $240.36      180     1-Sep-12
4644160     CANYON COUNTRY        CA       91351       SFD      7.450      7.184   $1,344.68     180     1-Aug-12
4644165     CARMEL                NY       10512       SFD      7.200      6.934   $1,410.58     180     1-Aug-12
4644170     LA CANADA-FLINTRIDGE  CA       91011       SFD      7.250      6.984   $5,303.74     180     1-Aug-12
4644177     WINDERMERE            FL       34786       SFD      7.400      7.134   $2,165.15     180     1-Aug-12
4644193     PARKLAND              FL       33067       SFD      7.800      7.534   $3,194.98     180     1-Aug-12
4644201     SAUSALITO             CA       94965       SFD      7.550      7.284   $2,901.16     180     1-Aug-12
4644220     HIGHLAND VILLAGE      TX       75067       SFD      7.650      7.384   $2,170.50     180     1-Aug-12
4644228     YORBA LINDA           CA       92886       SFD      7.350      7.084   $3,086.20     180     1-Aug-12
4644232     SAN JOSE              CA       95130       SFD      7.350      7.084   $2,094.21     180     1-Aug-12
4644275     LAKE SUCCESS          NY       11020       SFD      7.500      7.234   $6,952.60     180     1-Nov-12
4644373     FALLBROOK             CA       92028       SFD      7.650      7.384   $1,496.90     180     1-Aug-12
4644379     FLUSHING              NY       11365       SFD      8.100      7.834   $1,057.58     180     1-Aug-12
4644402     NEW CANAAN            CT       06840       SFD      7.100      6.834   $3,346.39     180     1-Aug-12
4644408     LOS ALAMITOS          CA       90720       SFD      7.150      6.884   $2,242.69     180     1-Aug-12
4644413     NEW CITY              NY       10956       SFD      6.600      6.334   $1,991.67     180     1-Aug-12
4644428     MIAMI                 FL       33131       SFD      7.800      7.534    $396.54      180     1-Aug-12
4644437     SAN JOSE              CA       95138       SFD      7.150      6.884   $4,886.37     180     1-Aug-12
4644459     FORT LAUDERDALE       FL       33308       HCO      7.800      7.534   $1,756.11     180     1-Aug-12
4644470     RANCHO CUCAMONGA      CA       91737       SFD      6.750      6.484   $2,106.09     180     1-Aug-12
4644577     EUGENE                OR       97408       SFD      7.625      7.359   $2,942.51     180     1-Oct-12
4644640     FLORENCE              KY       41042       SFD      6.875      6.609   $2,229.64     180     1-Nov-12
4644716     BEVERLY HILLS         CA       90210       SFD      6.900      6.634   $4,019.62     180     1-Aug-12
4644734     ARROYO GRANDE         CA       93420       SFD      7.500      7.234   $2,641.99     180     1-Aug-12
4644749     HOUSTON               TX       77072       SFD      7.350      7.084    $382.10      180     1-Aug-12
4644758     OAK PARK              IL       60302       SFD      7.375      7.109   $2,299.81     180     1-Sep-12
4645061     CERES                 CA       95307       SFD      7.500      7.234   $3,459.61     180     1-Oct-12
4645106     LONG BEACH            CA       90815       SFD      7.625      7.359   $4,857.48     180     1-Sep-12
4645384     KEYSTONE              CO       80435       SFD      7.875      7.609   $2,518.14     180     1-Oct-12
4645483     BLOOMFIELD TWP        MI       48301       SFD      7.875      7.609   $2,428.03     180     1-Oct-12
4645688     HANFORD               CA       93230       SFD      7.875      7.609   $4,837.09     180     1-Nov-12
4645697     MADISONVILLE          LA       70447       SFD      7.125      6.859   $2,626.92     180     1-Oct-12
4645699     MOORESTOWN TWP        NJ       08057       SFD      7.625      7.359   $2,396.04     180     1-Oct-12
4645713     LA VERNE              CA       91750       SFD      6.875      6.609   $2,782.59     180     1-Oct-12
4645838     BOWLING GREEN         KY       42103       SFD      7.625      7.359   $3,949.04     180     1-Nov-12
4645852     LIPAN                 TX       76462       SFD      7.750      7.484   $4,256.92     180     1-Oct-12
4645887     DENVER                CO       80209       SFD      7.500      7.234   $3,631.11     180     1-Oct-12
4645930     UPPER SADDLE RIVER    NJ       07458       SFD      8.000      7.734   $3,927.74     180     1-Oct-12
4646073     BERWYN                PA       19312       SFD      7.125      6.859   $3,170.41     180     1-Nov-12
4646104     BRENTWOOD             TN       37027       SFD      6.875      6.609   $2,461.52     180     1-Oct-12
4646646     CHATTANOOGA           TN       37421       SFD      7.375      7.109   $2,803.93     180     1-Aug-12
4646648     TULSA                 OK       74105       SFD      7.750      7.484   $2,353.19     180     1-Jul-12
4646671     HOUSTON               TX       77024       SFD      7.125      6.859   $2,943.96     180     1-Sep-12
4646678     OVERLAND PARK         KS       66221       SFD      7.500      7.234   $3,337.24     180     1-Sep-12
4646851     WILMINGTON            DE       19807       SFD      7.125      6.859   $2,717.50     180     1-Nov-12
4647353     PORTLAND              OR       97236       SFD      7.875      7.609   $2,257.31     180     1-Sep-12
4647359     SARATOGA              CA       95070       SFD      7.625      7.359   $4,669.72     180     1-Sep-12
4647479     DIX HILLS             NY       11746       SFD      7.125      6.859   $2,083.42     180     1-Oct-12
4647611     SANDY                 UT       84092       SFD      7.375      7.109   $2,473.68     180     1-Nov-12
4647646     ELBURN                IL       60119       SFD      7.375      7.109   $2,532.55     180     1-Nov-12
4647951     ANACORTES             WA       98221       SFD      7.250      6.984   $4,336.10     180     1-Nov-12
4648003     BLUFFTON              SC       29910       SFD      7.625      7.359   $3,736.52     180     1-Nov-12
4648212     PALM BEACH GARDENS    FL       33418       SFD      7.750      7.484   $2,894.43     180     1-Oct-12
4648281     PLYMOUTH              MN       55446       SFD      7.500      7.234   $2,750.12     180     1-Nov-12
4648326     ISSAQUAH              WA       98027       SFD      7.875      7.609   $2,465.97     180     1-Sep-12
4648728     APPLE VALLEY          CA       92307       SFD      7.000      6.734   $2,044.84     180     1-Nov-12
4648779     YORKTOWN HEIGHTS      NY       10598       SFD      8.000      7.734   $1,681.95     180     1-Nov-12
4648789     YORK                  PA       17403       SFD      7.375      7.109   $2,566.59     180     1-Nov-12
4648905     EUGENE                OR       97405       SFD      7.500      7.234   $2,159.94     180     1-Nov-12
4649012     OCEANSIDE             CA       92056       PUD      7.250      6.984   $2,437.35     180     1-Sep-12
4649172     PROVO                 UT       84604       SFD      7.625      7.359   $2,522.16     180     1-Nov-12
4649633     LAYTON                UT       84040       SFD      7.875      7.609   $2,750.50     180     1-Oct-12
4649738     FAIRFAX               VA       22032       SFD      7.125      6.859   $2,232.87     180     1-Oct-12
4650036     OGDEN                 UT       84403       SFD      7.500      7.234   $2,619.63     180     1-Oct-12
4650234     MOUNTAIN VIEW         CA       94040       SFD      7.625      7.359   $3,568.38     180     1-Nov-12
4650284     THOUSAND OAKS         CA       91362       SFD      6.750      6.484   $2,249.81     180     1-Nov-12
4650623     ASPEN                 CO       81611       LCO      7.500      7.234   $5,562.08     180     1-Nov-12
4650683     HOFFMAN ESTATES       IL       60195       SFD      7.500      7.234   $2,165.51     180     1-Sep-12
4650706     ST LOUIS              MO       63124       SFD      8.000      7.734   $4,300.43     180     1-Aug-12
4650717     MINNEAPOLIS           MN       55403       SFD      7.375      7.109   $2,851.77     180     1-Oct-12
4650737     OMAHA                 NE       68118       SFD      7.000      6.734   $3,685.20     180     1-Oct-12
4650761     HASLETT               MI       48840       SFD      7.500      7.234   $5,304.83     180     1-Sep-12
4650788     EL PASO               TX       79922       SFD      6.625      6.359   $2,188.84     180     1-Oct-12
4650889     HAYDEN LAKE           ID       83835       SFD      7.250      6.984   $3,195.02     180     1-Nov-12
4650903     NEWBERG               OR       97132       SFD      7.625      7.359   $3,269.45     180     1-Nov-12
4650937     GYPSUM                CO       81637       SFD      8.250      7.984    $970.15      180     1-Oct-12
4651192     WALNUT CREEK          CA       94596       SFD      7.000      6.734   $2,906.78     180     1-Nov-12
4651414     CHARLOTTE             NC       28277       SFD      7.500      7.234   $2,781.04     180     1-Sep-12
4651566     LOUISVILLE            KY       40207       SFD      7.500      7.234   $2,224.83     180     1-Sep-12
4651578     BELMONT               MA       02178       SFD      7.125      6.859   $2,324.82     180     1-Oct-12
4651738     CASTLE ROCK           CO       80104       SFD      7.500      7.234   $2,317.54     180     1-Nov-12
4651920     MESA                  AZ       85207       SFD      7.250      6.984   $2,236.52     180     1-Nov-12
4652249     AUSTIN                TX       78759       SFD      7.500      7.234   $2,148.36     180     1-Oct-12
4652750     ST. LOUIS PARK        MN       55416       SFD      7.375      7.109   $3,127.74     180     1-Oct-12
4652876     RIVERSIDE             CA       92506       SFD      8.000      7.734   $2,274.45     180     1-Oct-12
4652934     EUGENE                OR       97401       SFD      7.750      7.484   $2,288.24     180     1-Oct-12
4652946     HICKSVILLE            NY       11801       SFD      7.875      7.609   $1,214.02     180     1-Nov-12
4653160     IRVINE                CA       92604       SFD      7.750      7.484   $2,499.09     180     1-Oct-12
4653393     CHARLOTTE             NC       28207       SFD      7.375      7.109   $4,507.62     180     1-Oct-12
4653547     TULSA                 OK       74137       SFD      7.375      7.109   $3,679.69     180     1-Nov-12
4654203     ROSLYN                NY       11576       SFD      7.375      7.109   $2,299.81     180     1-Oct-12
4654594     AUGUSTA               GA       30909       SFD      7.375      7.109   $2,428.60     180     1-Oct-12
4654603     WEST BLOOMFIELD       MI       48323       SFD      7.750      7.484   $2,588.51     180     1-Sep-12
4654611     ANDOVER               MA       01810       SFD      7.875      7.609   $3,224.73     180     1-Oct-12
4654617     NEWARK                DE       19711       SFD      6.750      6.484   $2,698.98     180     1-Oct-12
4654625     ROCKY MOUNT           NC       27803       SFD      7.250      6.984   $2,689.29     180     1-Oct-12
4654637     WEST DUNDEE           IL       60118       SFD      7.375      7.109   $2,391.81     180     1-Sep-12
4655021     NASHVILLE             TN       37205       SFD      7.500      7.234   $4,449.66     180     1-Oct-12
4655031     CHARLESTON            SC       29407       SFD      7.250      6.984   $3,651.46     180     1-Sep-12
4655964     MYRTLE BEACH          SC       29577       SFD      6.750      6.484   $4,424.55     180     1-Oct-12
4655972     GEORGETOWN            SC       29440       SFD      6.625      6.359   $3,511.98     180     1-Oct-12
4655977     WILMINGTON            NC       28409       SFD      7.000      6.734   $2,471.78     180     1-Oct-12
4657790     ENGLEWOOD             CO       80111       SFD      7.625      7.359   $2,484.79     180     1-Sep-12
4657830     GREENBORO             NC       27410       SFD      7.000      6.734   $2,247.08     180     1-Sep-12
4657844     PARADISE VALLEY       AZ       85253       PUD      7.375      7.109   $3,633.70     180     1-Sep-12
4657930     SCOTTSDALE            AZ       85262       SFD      7.375      7.109   $4,250.05     180     1-Sep-12
4658577     FREDERICKSBURG        VA       22408       SFD      7.750      7.484   $3,539.20     180     1-Nov-12
4658640     LAKE ALFRED           FL       33850       SFD      7.750      7.484    $963.87      180     1-Nov-12
4658899     SARATOGA              CA       95070       SFD      7.625      7.359   $3,783.23     180     1-Nov-12
4658939     FAIR OAKS             CA       95628       SFD      7.400      7.134   $2,321.78     180     1-Oct-12
4658970     MIAMI BEACH           FL       33141       HCO      7.750      7.484    $235.32      180     1-Sep-12
4658993     RIPON                 CA       95366       SFD      7.700      7.434   $2,327.27     180     1-Oct-12
4659001     PALM BEACH GARDENS    FL       33418       SFD      7.300      7.034    $549.42      180     1-Oct-12
4659020     MARYLAND HEIGHTS      MO       63043       SFD      7.250      6.984    $492.95      180     1-Oct-12
4659034     SANTA ROSA            CA       95404       SFD      7.500      7.234   $2,502.94     180     1-Oct-12
4659048     DISCOVERY BAY         CA       94514       SFD      6.900      6.634   $3,930.29     180     1-Oct-12
4659086     SANTA ANA             CA       92705       SFD      7.250      6.984   $3,195.03     180     1-Oct-12
4659103     DALLAS                TX       75214       SFD      7.750      7.484    $564.77      180     1-Oct-12
4659120     RANCHO PALOS VERDES   CA       90275       LCO      7.000      6.734   $2,247.08     180     1-Oct-12
4659133     BELMONT               CA       94002       SFD      6.800      6.534   $3,048.31     180     1-Oct-12
4659152     PORTOLA HILLS         CA       92679       SFD      7.100      6.834   $2,496.23     180     1-Oct-12
4659697     HUNTINGTON BEACH      CA       92648       SFD      7.125      6.859   $2,853.37     180     1-Oct-12
4660606     FULLERTON             CA       92835       SFD      6.875      6.609   $2,078.02     180     1-Oct-12
4662206     LAGUNA NIGUEL         CA       92677       PUD      7.250      6.984   $2,738.59     180     1-Oct-12
6317271     OCEAN CITY            NJ       08226       SFD      7.125      6.859   $5,145.12     180     1-Oct-12
6345925     PINEHURST             NC       28374       SFD      7.500      7.234   $3,012.79     180     1-Aug-12
6427617     TONKA BAY             MN       55331       SFD      7.375      7.109   $3,035.75     180     1-Sep-12
6430179     TUCSON                AZ       85737       SFD      7.500      7.234   $3,939.80     180     1-Sep-12
6431243     ANCHORAGE             AK       99515       SFD      7.250      6.984   $2,966.80     180     1-Sep-12
6432109     ROCHESTER             MN       55902       SFD      7.500      7.234   $2,447.31     180     1-Sep-12
6433571     RUMSON                NJ       07760       SFD      7.625      7.359   $3,035.92     180     1-Aug-12
6435377     MERCER ISLAND         WA       98040       SFD      7.375      7.109   $2,759.77     180     1-Sep-12
6436390     NORTHVILLE            MI       48167       SFD      7.500      7.234   $2,774.08     180     1-Sep-12
6436591     DEL MAR               CA       92014       SFD      7.500      7.234   $5,098.57     180     1-Sep-12
6436621     VISTA                 CA       92084       SFD      7.625      7.359   $1,377.84     180     1-Sep-12
6438887     ARDMORE               OK       73401       SFD      7.375      7.109   $2,759.77     180     1-Aug-12
6439549     MONTAGUE              MI       49437       SFD      7.750      7.484   $2,339.07     180     1-Aug-12
6439852     NEW BRAUNFELS         TX       78130       SFD      7.375      7.109   $2,787.37     180     1-Oct-12
6440202     JAMUL                 CA       91935       SFD      7.750      7.484   $4,649.90     180     1-Sep-12
6440612     HUNTINGTON BEACH      CA       92648       PUD      7.500      7.234   $4,635.06     180     1-Sep-12
6442051     SAN JOSE              CA       95138       SFD      7.000      6.734   $3,493.30     180     1-Aug-12
6442494     SANTA BARBARA         CA       93103       PUD      7.250      6.984   $2,190.87     180     1-Sep-12
6442511     FREMON                IN       46737       SFD      7.875      7.609   $4,173.18     180     1-Aug-12
6442569     ARLINGTON             VA       22201       SFD      7.375      7.109   $2,388.12     180     1-Sep-12
6443487     CARDIFF AREA          CA       92007       SFD      7.500      7.234   $2,781.04     180     1-Oct-12
6445806     MAINE                 NY       13760       SFD      8.125      7.859    $192.58      180     1-Sep-12
6446828     SCOTTSDALE            AZ       85259       PUD      7.500      7.234   $2,781.04     180     1-Aug-12
6450487     DERWOOD               MD       20855       SFD      7.250      6.984   $2,355.19     180     1-Sep-12
6450613     LAS VEGAS             NV       89117       SFD      7.500      7.234   $3,249.18     180     1-Sep-12
6451579     WESTWOOD              MA       02090       SFD      7.000      6.734   $3,375.10     180     1-Sep-12
6452016     LA HONDA              CA       94606       SFD      7.250      6.984   $3,286.31     180     1-Sep-12
6452338     ASPEN                 CO       81611       LCO      7.625      7.359   $2,933.17     180     1-Sep-12
6452350     CHESTERFIELD          MO       63017       SFD      7.625      7.359   $3,269.45     180     1-Sep-12
6453401     PARK CITY             UT       84060       SFD      7.500      7.234   $2,549.28     180     1-Sep-12
6453806     CALABASAS             CA       91301       PUD      7.500      7.234   $3,391.01     180     1-Sep-12
6455909     SHORT HILLS           NJ       07078       SFD      7.500      7.234   $2,781.04     180     1-Sep-12
6456518     FORT WORTH            TX       76132       SFD      7.375      7.109   $2,299.81     180     1-Sep-12
6456875     ENGLEWOOD             CO       80110       SFD      7.625      7.359   $2,008.38     180     1-Sep-12
6457457     LOS ANGELES           CA       90210       SFD      7.250      6.984   $3,195.02     180     1-Sep-12
6457562     NEWPORT BEACH         CA       92625       SFD      7.125      6.859   $5,400.00     180     1-Sep-12
6457772     WEST GREENWICH        RI       02817       SFD      7.375      7.109   $2,299.81     180     1-Sep-12
6459047     LOVELAND              CO       80538       SFD      7.250      6.984   $2,591.62     180     1-Aug-12
6459229     FEDERAL WAY           WA       98023       SFD      7.500      7.234   $2,102.46     180     1-Sep-12
6460222     FREMONT               CA       94536       SFD      7.000      6.734   $3,073.54     180     1-Sep-12
6461247     CHAPEL HILL           NC       27516       SFD      7.375      7.109   $2,373.40     180     1-Sep-12
6461966     PLANO                 TX       75093       PUD      6.875      6.609   $2,497.19     180     1-Aug-12
6463300     MIDDLETON             WI       53562       SFD      7.250      6.984   $2,322.32     180     1-Sep-12
6465244     COTO DE CAZA          CA       92679       SFD      7.500      7.234   $2,317.53     180     1-Sep-12
6466906     BRANSCOMB             CA       95417       SFD      7.750      7.484   $2,372.01     180     1-Oct-12
6466998     ALPHARETTA            GA       30004       SFD      7.250      6.984   $2,167.14     180     1-Sep-12
6468258     GREENWOOD VILLAGE     CO       80121       SFD      7.375      7.109   $3,835.16     180     1-Sep-12
6468305     GREENVILLE            DE       19807       SFD      7.500      7.234   $2,781.04     180     1-Sep-12
6468358     MEQUON                WI       53092       SFD      7.375      7.109   $2,171.02     180     1-Sep-12
6468411     AFTON                 MN       55001       SFD      7.125      6.859   $3,170.41     180     1-Oct-12
6468819     AURORA                CO       80016       SFD      7.500      7.234   $2,294.36     180     1-Sep-12
6468923     WAYZATA               MN       55391       SFD      7.625      7.359   $8,126.93     180     1-Oct-12
6469190     WASHINGTON            DC       20015       SFD      7.250      6.984   $2,738.59     180     1-Sep-12
6470838     BOSTON                MA       02116       LCO      7.625      7.359   $3,362.87     180     1-Oct-12
6473313     SAN DIEGO             CA       92130       SFD      7.000      6.734   $2,966.13     180     1-Sep-12
6474021     MINNEAPOLIS           MN       55409       SFD      7.375      7.109   $2,906.96     180     1-Sep-12
6477608     DALLAS                TX       75225       PUD      7.000      6.734   $4,494.14     180     1-Nov-12
6478254     BOULDER               CO       80301       SFD      7.500      7.234   $2,827.39     180     1-Oct-12
6478572     GLEN ELLYN            IL       60137       SFD      7.750      7.484   $2,330.60     180     1-Sep-12
6478605     ROCHESTER             MN       55906       SFD      7.375      7.109   $2,897.76     180     1-Sep-12
6479503     ONALASKA              WI       54650       SFD      8.000      7.734   $3,822.61     180     1-Sep-12
6479823     VENTURA               CA       93003       SFD      7.125      6.859   $2,717.49     180     1-Sep-12
6482346     TELLURIDE             CO       81435       SFD      8.000      7.734   $2,895.63     180     1-Oct-12
6483391     BRECKENRIDGE          CO       80424       PUD      7.500      7.234   $2,447.24     180     1-Oct-12
6484378     MILWAUKIE             OR       97267       SFD      7.625      7.359   $4,465.14     180     1-Sep-12
6487416     DEEPHAVEN             MN       55331       SFD      7.250      6.984   $4,536.93     180     1-Oct-12
6488777     LUBBOCK               TX       79424       SFD      8.000      7.734   $4,204.87     180     1-Sep-12
6490670     TROUTMAN              NC       28166       SFD      7.500      7.234   $2,044.06     180     1-Oct-12
6492210     CHARLOTTE             NC       28269       SFD      7.500      7.234   $1,395.15     180     1-Sep-12
6492633     FALLBROOK             CA       92028       PUD      7.750      7.484   $3,529.78     180     1-Oct-12
6495003     SAN CLEMENTE          CA       92672       SFD      7.625      7.359   $2,615.56     180     1-Oct-12
6495500     YORBA LINDA           CA       92687       PUD      7.125      6.859   $2,228.34     180     1-Oct-12
6496922     MERCER ISLAND         WA       98040       SFD      7.750      7.484   $3,529.78     180     1-Oct-12
6505019     PARK CITY             UT       84098       SFD      7.500      7.234   $2,132.13     180     1-Oct-12
6506544     COTO DE CAZA          CA       92679       SFD      7.125      6.859   $2,617.40     180     1-Oct-12
6507218     ENGLEWOOD             CO       80111       SFD      7.375      7.109   $3,219.73     180     1-Oct-12
6511669     CASTLE ROCK           CO       80104       SFD      7.750      7.484   $5,061.24     180     1-Oct-12
6513237     OKOBOJI               IA       51355       SFD      7.500      7.234   $2,669.80     180     1-Oct-12
6514157     VIRGINIA BEACH        VA       23455       SFD      6.875      6.609   $2,675.56     180     1-Oct-12
6515645     MEDINA                MN       55391       SFD      7.375      7.109   $3,219.73     180     1-Oct-12
6518160     AFTON                 MN       55001       SFD      7.500      7.234   $2,711.51     180     1-Nov-12
6522602     GOODVIEW              VA       24095       SFD      7.625      7.359   $2,335.32     180     1-Oct-12
6523209     NOVATO                CA       94947       SFD      7.500      7.234   $2,317.53     180     1-Oct-12
6527403     SHERWOOD              MD       21665       SFD      7.500      7.234   $3,124.03     180     1-Oct-12
6531403     PLEASANTON            CA       94566       PUD      7.125      6.859   $2,998.30     180     1-Nov-12
6537099     EDINA                 MN       55436       SFD      7.625      7.359   $2,919.16     180     1-Nov-12
</TABLE>


COUNT:   392
WAC:       7.406554902
WAM:     178.4997989
WALTV:    67.34405783



<PAGE>
             CUT-OFF
MORTGAGE      DATE                     MORTGAGE           T.O.P.   MASTER
LOAN        PRINCIPAL                  INSURANCE SERVICE MORTGAGE  SERVICE
NUMBER       BALANCE     LTV   SUBSIDY   CODE      FEE     LOAN      FEE
- ------       -------     ---   -------   ----      ---     ----      ---

4549134    $254,602.91  79.99                     0.25              0.016
4568392    $433,650.00  80.00  GD 5YR             0.25              0.016
4571052    $375,000.00  69.44                     0.25              0.016
4573062    $361,792.41  80.00                     0.25              0.016
4580620    $278,148.10  90.00                     0.25              0.016
4582699    $266,600.00  79.99                     0.25              0.016
4587562    $321,078.59  95.00             13      0.25              0.016
4591957    $294,900.00  79.99                     0.25              0.016
4596333    $220,329.50  48.30                     0.25              0.016
4597157    $111,180.56  75.00                     0.25              0.016
4598309    $294,965.47  54.55                     0.25              0.016
4598956    $295,332.96  62.05                     0.25              0.016
4600524    $135,600.00  80.00                     0.25              0.016
4606962    $473,501.39  74.57                     0.25              0.016
4609572    $249,211.25  58.41                     0.25              0.016
4615375    $212,000.00  80.00                     0.25              0.016
4616383    $70,000.00   40.82                     0.25              0.016
4616522    $298,142.22  50.00                     0.25              0.016
4616667    $244,268.16  71.01                     0.25              0.016
4617050    $271,646.56  66.35                     0.25              0.016
4617153    $317,018.58  75.29                     0.25              0.016
4617901    $396,392.60  78.43                     0.25              0.016
4618130    $478,485.62  62.75                     0.25              0.016
4618410    $555,372.44  74.27                     0.25              0.016
4618416    $277,457.18  90.00             01      0.25              0.016
4619236    $243,246.78  80.00                     0.25              0.016
4619304    $297,264.86  30.00                     0.25              0.016
4619889    $317,470.32  58.82                     0.25              0.016
4620156    $256,204.84  79.64                     0.25              0.016
4620473    $127,642.22  79.50                     0.25              0.016
4620804    $300,000.00  84.99                     0.25              0.016
4621839    $593,143.11  50.38                     0.25              0.016
4621882    $262,188.13  84.84             17      0.25              0.016
4621921    $382,510.45  69.24                     0.25              0.016
4623095    $245,486.97  63.50                     0.25              0.016
4623322    $268,363.39  72.97                     0.25              0.016
4623424    $155,000.00  12.92                     0.25              0.016
4623876    $246,744.27  78.21                     0.25              0.016
4624389    $259,206.11  80.00                     0.25              0.016
4624393    $329,000.00  70.00                     0.25              0.016
4625163    $266,000.00  95.00                     0.25              0.016
4625310    $241,069.73  61.22                     0.25              0.016
4625447    $318,192.94  79.99                     0.25              0.016
4625639    $270,315.61  80.00                     0.25              0.016
4626164    $200,000.00  52.77                     0.25              0.016
4626646    $238,529.86  52.17                     0.25              0.016
4626696    $270,000.00  67.50                     0.25              0.016
4627211    $396,000.00  80.00                     0.25              0.016
4627278    $332,058.81  74.00                     0.25              0.016
4627367    $305,057.20  76.75                     0.25              0.016
4628181    $293,799.69  90.00             17      0.25              0.016
4628378    $108,975.13  64.71                     0.25              0.016
4628453    $255,715.27  74.49                     0.25              0.016
4628516    $151,188.28  74.88                     0.25              0.016
4628555    $84,910.09   74.96                     0.25              0.016
4628945    $173,485.93  79.82                     0.25              0.016
4629185    $498,489.93  56.50                     0.25              0.016
4629669    $428,643.36  42.91                     0.25              0.016
4629892    $238,000.00  52.25                     0.25              0.016
4630071    $254,221.38  71.83                     0.25              0.016
4630217    $38,780.91   60.94                     0.25              0.016
4630237    $107,680.92  80.00                     0.25              0.016
4630309    $348,846.95  48.61                     0.25              0.016
4630339    $359,605.83  60.17                     0.25              0.016
4630359    $616,092.26  58.86                     0.25              0.016
4630524    $255,408.51  71.79                     0.25              0.016
4630716    $229,282.21  56.93                     0.25              0.016
4631154    $218,584.43  80.00                     0.25              0.016
4631235    $234,182.76  89.83             17      0.25              0.016
4631448    $372,774.88  75.00                     0.25              0.016
4631449    $271,327.70  69.16                     0.25              0.016
4631501    $225,700.00  76.51                     0.25              0.016
4631559    $418,786.26  89.94             06      0.25              0.016
4631563    $473,451.92  79.83                     0.25              0.016
4631700    $505,950.40  70.00                     0.25              0.016
4632151    $89,063.00   80.00                     0.25              0.016
4632195    $317,981.56  80.00                     0.25              0.016
4632210    $320,000.00  44.44                     0.25              0.016
4632250    $111,669.10  65.88                     0.25              0.016
4632391    $645,974.82  68.42                     0.25              0.016
4632424    $295,076.23  45.54                     0.25              0.016
4632510    $264,789.01  80.00                     0.25              0.016
4632643    $273,315.46  67.90                     0.25              0.016
4632802    $59,644.32   68.18                     0.25              0.016
4632809    $302,071.96  71.14                     0.25              0.016
4632852    $351,825.31  80.00                     0.25              0.016
4632904    $396,816.79  64.52                     0.25              0.016
4632929    $347,712.32  64.22                     0.25              0.016
4633072    $273,221.74  60.84                     0.25              0.016
4633077    $308,080.30  65.26                     0.25              0.016
4633140    $269,148.16  72.97                     0.25              0.016
4633406    $263,266.77  84.99             17      0.25              0.016
4633549    $248,400.73  34.01                     0.25              0.016
4633557    $284,120.22  60.64                     0.25              0.016
4633586    $230,486.29  80.00                     0.25              0.016
4633655    $915,419.56  57.56                     0.25              0.016
4633766    $218,666.99  80.00                     0.25              0.016
4633940    $342,886.67  70.41                     0.25              0.016
4633945    $238,000.00  68.00                     0.25              0.016
4634075    $233,277.65  62.40                     0.25              0.016
4634430    $397,522.98  80.00                     0.25              0.016
4634512    $415,000.00  37.22                     0.25              0.016
4634640    $218,451.05  90.00             17      0.25              0.016
4634955    $280,221.99  76.62                     0.25              0.016
4634978    $339,947.34  57.80                     0.25              0.016
4634989    $346,363.67  56.00                     0.25              0.016
4635043    $268,858.31  64.21                     0.25              0.016
4635101    $797,583.90  53.33                     0.25              0.016
4635411    $387,838.00  73.40                     0.25              0.016
4635506    $150,313.48  80.00                     0.25              0.016
4635605    $248,264.34  68.22                     0.25              0.016
4635641    $224,615.85  79.96                     0.25              0.016
4636336    $291,726.69  65.18                     0.25              0.016
4636472    $237,833.36  90.00                     0.25              0.016
4636723    $268,416.94  75.00                     0.25              0.016
4636754    $306,000.00  50.16                     0.25              0.016
4637007    $382,877.95  80.00                     0.25              0.016
4637186    $378,826.95  80.00                     0.25              0.016
4637343    $255,251.96  80.00                     0.25              0.016
4637397    $299,123.40  74.07                     0.25              0.016
4638184    $351,843.52  80.00                     0.25              0.016
4638229    $820,000.00  71.30                     0.25              0.016
4638534    $375,000.00  72.82                     0.25              0.016
4638601    $350,000.00  57.95                     0.25              0.016
4638766    $54,837.50   15.07                     0.25              0.016
4638819    $250,500.00  63.10                     0.25              0.016
4638863    $295,791.19  73.26                     0.25              0.016
4638991    $397,818.22  80.00                     0.25              0.016
4639289    $373,816.89  62.34                     0.25              0.016
4639418    $278,166.59  79.94                     0.25              0.016
4639459    $600,000.00  44.44                     0.25              0.016
4639657    $266,500.00  71.77                     0.25              0.016
4639739    $295,000.00  50.00                     0.25              0.016
4639778    $383,849.94  51.33                     0.25              0.016
4640290    $289,114.51  74.36                     0.25              0.016
4640485    $559,000.00  69.88                     0.25              0.016
4640491    $287,826.03  80.00                     0.25              0.016
4640615    $361,400.00  54.35                     0.25              0.016
4640671    $219,320.87  80.00                     0.25              0.016
4640676    $357,967.05  90.00             06      0.25              0.016
4640990    $270,000.00  69.25                     0.25              0.016
4641170    $153,948.84  80.00                     0.25              0.016
4641231    $244,268.15  56.98                     0.25              0.016
4641237    $250,000.00  47.26                     0.25              0.016
4641459    $325,000.00  60.52                     0.25              0.016
4641485    $424,000.00  80.00                     0.25              0.016
4641489    $328,992.37  68.04                     0.25              0.016
4641608    $225,000.00  71.43                     0.25              0.016
4641704    $263,202.68  44.00                     0.25              0.016
4641893    $365,600.00  80.00                     0.25              0.016
4641920    $278,645.04  80.00                     0.25              0.016
4642166    $239,283.08  70.59                     0.25              0.016
4642372    $397,818.23  64.37                     0.25              0.016
4642711    $292,269.28  71.93                     0.25              0.016
4642718    $437,215.54  69.84                     0.25              0.016
4642725    $431,893.67  80.00                     0.25              0.016
4642737    $260,007.65  79.52                     0.25              0.016
4642750    $459,464.40  78.58                     0.25              0.016
4642766    $427,676.30  75.77                     0.25              0.016
4642827    $220,019.59  72.79                     0.25              0.016
4642832    $250,456.35  79.37                     0.25              0.016
4642836    $254,723.76  67.84                     0.25              0.016
4642842    $233,329.48  69.78                     0.25              0.016
4642852    $247,142.49  47.17                     0.25              0.016
4642858    $296,420.19  80.00                     0.25              0.016
4642859    $240,835.05  79.99                     0.25              0.016
4642917    $400,000.00  68.38                     0.25              0.016
4643041    $342,000.00  61.96                     0.25              0.016
4643225    $277,126.17  62.22                     0.25              0.016
4643394    $475,000.00  65.25                     0.25              0.016
4643604    $275,122.84  80.00                     0.25              0.016
4643884    $284,139.26  42.35                     0.25              0.016
4643940    $272,050.00  79.99                     0.25              0.016
4644058    $49,550.05   30.67                     0.25              0.016
4644064    $45,556.94   60.53                     0.25              0.016
4644073    $198,136.60  22.10                     0.25              0.016
4644088    $346,781.16  66.23                     0.25              0.016
4644108    $561,853.01  56.70                     0.25              0.016
4644112    $227,957.20  69.70                     0.25              0.016
4644117    $554,668.71  57.73                     0.25              0.016
4644128    $148,608.48  75.00                     0.25              0.016
4644132    $241,706.91  80.00                     0.25              0.016
4644139    $13,782.05   53.19                     0.25              0.016
4644160    $144,167.67  63.26                     0.25              0.016
4644165    $153,280.26  41.33                     0.25              0.016
4644170    $575,586.84  62.68                     0.25              0.016
4644177    $232,838.79  79.93                     0.25              0.016
4644193    $335,394.42  69.77                     0.25              0.016
4644201    $309,167.78  37.37                     0.25              0.016
4644220    $229,912.26  75.57                     0.25              0.016
4644228    $332,896.48  80.00                     0.25              0.016
4644232    $225,894.03  76.00                     0.25              0.016
4644275    $750,000.00  48.39                     0.25              0.016
4644373    $158,557.04  52.46                     0.25              0.016
4644379    $108,777.15  35.48                     0.25              0.016
4644402    $366,507.75  43.53                     0.25              0.016
4644408    $244,876.85  80.00                     0.25              0.016
4644413    $224,961.52  80.00                     0.25              0.016
4644428    $41,626.97   33.60                     0.25              0.016
4644437    $533,538.33  72.30                     0.25              0.016
4644459    $184,347.98  68.89                     0.25              0.016
4644470    $235,685.01  79.87                     0.25              0.016
4644577    $314,059.05  70.00                     0.25              0.016
4644640    $250,000.00  61.61                     0.25              0.016
4644716    $445,678.89  21.95                     0.25              0.016
4644734    $282,401.62  75.00                     0.25              0.016
4644749    $40,425.84   74.95                     0.25              0.016
4644758    $248,025.89  52.63                     0.25              0.016
4645061    $372,072.89  82.93             17      0.25              0.016
4645106    $516,883.51  57.78                     0.25              0.016
4645384    $264,724.20  90.00             17      0.25              0.016
4645483    $255,251.97  80.00                     0.25              0.016
4645688    $510,000.00  75.00                     0.25              0.016
4645697    $289,094.96  46.77                     0.25              0.016
4645699    $255,733.80  90.00             01      0.25              0.016
4645713    $311,004.91  80.00                     0.25              0.016
4645838    $422,750.00  73.52                     0.25              0.016
4645852    $450,913.86  73.18                     0.25              0.016
4645887    $390,517.02  60.26                     0.25              0.016
4645930    $409,812.26  64.72                     0.25              0.016
4646073    $350,000.00  65.42                     0.25              0.016
4646104    $275,119.73  80.00                     0.25              0.016
4646646    $301,990.78  80.00                     0.25              0.016
4646648    $247,016.84  59.38                     0.25              0.016
4646671    $322,965.44  74.71                     0.25              0.016
4646678    $357,818.72  80.00                     0.25              0.016
4646851    $300,000.00  60.12                     0.25              0.016
4647353    $236,604.57  70.00                     0.25              0.016
4647359    $496,903.97  60.23                     0.25              0.016
4647479    $229,282.21  55.42                     0.25              0.016
4647611    $268,900.00  77.94                     0.25              0.016
4647646    $275,300.00  78.66                     0.25              0.016
4647951    $475,000.00  51.35                     0.25              0.016
4648003    $400,000.00  59.26                     0.25              0.016
4648212    $306,591.51  75.00                     0.25              0.016
4648281    $296,665.00  73.40                     0.25              0.016
4648326    $258,475.56  57.78                     0.25              0.016
4648728    $227,500.00  70.00                     0.25              0.016
4648779    $176,000.00  80.00                     0.25              0.016
4648789    $279,000.00  75.00                     0.25              0.016
4648905    $233,000.00  79.52                     0.25              0.016
4649012    $265,346.58  84.23             01      0.25              0.016
4649172    $270,000.00  32.73                     0.25              0.016
4649633    $289,152.63  89.23                     0.25              0.016
4649738    $245,730.73  79.98                     0.25              0.016
4650036    $281,734.55  80.00                     0.25              0.016
4650234    $382,000.00  67.02                     0.25              0.016
4650284    $254,241.00  70.00                     0.25              0.016
4650623    $600,000.00  66.67                     0.25              0.016
4650683    $232,184.57  80.00                     0.25              0.016
4650706    $446,072.64  77.59                     0.25              0.016
4650717    $309,053.44  56.26                     0.25              0.016
4650737    $408,706.47  78.10                     0.25              0.016
4650761    $568,782.66  75.00                     0.25              0.016
4650788    $248,487.50  71.23                     0.25              0.016
4650889    $350,000.00  40.46                     0.25              0.016
4650903    $350,000.00  68.63                     0.25              0.016
4650937    $99,717.35   80.00                     0.25              0.016
4651192    $323,396.00  53.90                     0.25              0.016
4651414    $298,182.26  54.25                     0.25              0.016
4651566    $236,545.81  35.48                     0.25              0.016
4651578    $255,849.04  70.58                     0.25              0.016
4651738    $250,000.00  58.82                     0.25              0.016
4651920    $245,000.00  72.06                     0.25              0.016
4652249    $231,050.08  86.47             11      0.25              0.016
4652750    $338,961.85  76.84                     0.25              0.016
4652876    $237,312.22  56.67                     0.25              0.016
4652934    $242,381.79  95.00             11      0.25              0.016
4652946    $128,000.00  80.00                     0.25              0.016
4653160    $264,715.60  76.96                     0.25              0.016
4653393    $488,503.84  44.55                     0.25              0.016
4653547    $400,000.00  53.33                     0.25              0.016
4654203    $249,236.65  58.14                     0.25              0.016
4654594    $263,193.90  80.00                     0.25              0.016
4654603    $272,866.59  73.33                     0.25              0.016
4654611    $339,006.52  42.50                     0.25              0.016
4654617    $304,016.65  75.87                     0.25              0.016
4654625    $291,792.57  65.47                     0.25              0.016
4654637    $258,298.48  69.52                     0.25              0.016
4655021    $478,550.34  80.00                     0.25              0.016
4655031    $397,522.96  66.67                     0.25              0.016
4655964    $498,387.95  77.52                     0.25              0.016
4655972    $398,696.35  72.73                     0.25              0.016
4655977    $274,132.39  35.71                     0.25              0.016
4657790    $264,405.78  67.34                     0.25              0.016
4657830    $248,417.90  49.02                     0.25              0.016
4657844    $392,580.39  58.09                     0.25              0.016
4657930    $453,728.81  53.41                     0.25              0.016
4658577    $376,000.00  80.00                     0.25              0.016
4658640    $102,400.00  80.00                     0.25              0.016
4658899    $405,000.00  55.86                     0.25              0.016
4658939    $251,232.22  80.00                     0.25              0.016
4658970    $24,851.81   31.25                     0.25              0.016
4658993    $247,264.07  80.00                     0.25              0.016
4659001    $59,815.58   40.82                     0.25              0.016
4659020    $53,833.30   56.25                     0.25              0.016
4659034    $269,184.56  72.97                     0.25              0.016
4659048    $438,599.71  80.00                     0.25              0.016
4659086    $348,919.56  67.31                     0.25              0.016
4659103    $59,822.73   50.00                     0.25              0.016
4659120    $249,211.26  78.13                     0.25              0.016
4659133    $342,297.63  64.19                     0.25              0.016
4659152    $275,136.77  80.00                     0.25              0.016
4659697    $314,016.95  70.00                     0.25              0.016
4660606    $232,256.88  77.67                     0.25              0.016
4662206    $299,073.91  78.95                     0.25              0.016
6317271    $566,227.38  66.82                     0.25              0.016
6345925    $320,949.60  49.24                     0.25              0.016
6427617    $327,978.55  55.00                     0.25              0.016
6430179    $422,424.88  44.74                     0.25              0.016
6431243    $322,987.42  53.99                     0.25              0.016
6432109    $262,400.40  80.00                     0.25              0.016
6433571    $322,069.01  34.21                     0.25              0.016
6435377    $298,162.33  46.88                     0.25              0.016
6436390    $297,436.81  90.00             33      0.25              0.016
6436591    $544,688.23  64.71                     0.25              0.016
6436621    $146,616.00  64.13                     0.25              0.016
6438887    $296,633.79  85.71             33      0.25              0.016
6439549    $246,283.22  70.00                     0.25              0.016
6439852    $302,074.82  67.33                     0.25              0.016
6440202    $491,071.61  79.04                     0.25              0.016
6440612    $496,970.44  69.35                     0.25              0.016
6442051    $384,949.97  80.00                     0.25              0.016
6442494    $234,884.59  68.57                     0.25              0.016
6442511    $436,117.59  80.00                     0.25              0.016
6442569    $258,009.81  69.60                     0.25              0.016
6443487    $299,093.96  68.18                     0.25              0.016
6445806    $19,885.29   21.39                     0.25              0.016
6446828    $297,264.86  64.31                     0.25              0.016
6450487    $256,402.31  73.71                     0.25              0.016
6450613    $348,376.28  69.27                     0.25              0.016
6451579    $373,123.73  68.27                     0.25              0.016
6452016    $357,756.98  80.00                     0.25              0.016
6452338    $312,118.12  69.93                     0.25              0.016
6452350    $347,902.38  70.00                     0.25              0.016
6453401    $273,333.75  50.00                     0.25              0.016
6453806    $363,583.58  69.88                     0.25              0.016
6455909    $298,182.26  46.15                     0.25              0.016
6456518    $242,045.49  41.67                     0.25              0.016
6456875    $213,711.46  47.25                     0.25              0.016
6457457    $347,832.60  69.17                     0.25              0.016
6457562    $592,406.09  40.69                     0.25              0.016
6457772    $248,468.61  78.13                     0.25              0.016
6459047    $281,254.53  73.74                     0.25              0.016
6459229    $224,419.55  80.00                     0.25              0.016
6460222    $339,786.05  75.00                     0.25              0.016
6461247    $250,080.88  73.71                     0.25              0.016
6461966    $275,788.47  80.00                     0.25              0.016
6463300    $252,824.62  80.00                     0.25              0.016
6465244    $247,294.83  59.74                     0.25              0.016
6466906    $251,255.49  70.00                     0.25              0.016
6466998    $235,929.87  78.87                     0.25              0.016
6468258    $414,346.25  69.48                     0.25              0.016
6468305    $298,182.26  50.00                     0.25              0.016
6468358    $234,453.75  59.45                     0.25              0.016
6468411    $348,907.72  54.26                     0.25              0.016
6468819    $246,000.36  75.00                     0.25              0.016
6468923    $867,401.20  45.79                     0.25              0.016
6469190    $298,142.22  58.82                     0.25              0.016
6470838    $358,924.63  63.05                     0.25              0.016
6473313    $327,911.67  63.46                     0.25              0.016
6474021    $314,064.31  65.15                     0.25              0.016
6477608    $500,000.00  65.15                     0.25              0.016
6478254    $304,078.86  59.80                     0.25              0.016
6478572    $246,132.24  64.65                     0.25              0.016
6478605    $313,070.45  68.48                     0.25              0.016
6479503    $397,680.41  80.00                     0.25              0.016
6479823    $298,121.96  42.86                     0.25              0.016
6482346    $302,124.37  68.86                     0.25              0.016
6483391    $263,194.71  80.00                     0.25              0.016
6484378    $475,135.23  56.24                     0.25              0.016
6487416    $495,465.78  70.00                     0.25              0.016
6488777    $437,448.45  80.00                     0.25              0.016
6490670    $219,834.07  70.00                     0.25              0.016
6492210    $149,588.11  70.00                     0.25              0.016
6492633    $373,892.09  72.12                     0.25              0.016
6495003    $279,163.61  70.00                     0.25              0.016
6495500    $245,232.29  65.60                     0.25              0.016
6496922    $373,892.09  54.35                     0.25              0.016
6505019    $229,305.37  61.33                     0.25              0.016
6506544    $288,048.24  80.00                     0.25              0.016
6507218    $348,931.31  72.92                     0.25              0.016
6511669    $536,111.41  71.22                     0.25              0.016
6513237    $287,130.20  80.00                     0.25              0.016
6514157    $299,043.19  73.35                     0.25              0.016
6515645    $348,931.31  69.31                     0.25              0.016
6518160    $292,500.00  75.00                     0.25              0.016
6522602    $249,253.22  79.37                     0.25              0.016
6523209    $249,244.97  54.82                     0.25              0.016
6527403    $335,982.22  70.95                     0.25              0.016
6531403    $331,000.00  45.34                     0.25              0.016
6537099    $312,500.00  50.00                     0.25              0.016

           $120,592,004.98



<PAGE>




                                   EXHIBIT F-3


            [Schedule of Mortgage Loans Serviced by Other Servicers]

NASCOR
NMI / 1997-20  Exhibit F-3
15 YEAR FIXED RATE RELOCATION AND NON-RELOCATION LOANS


<TABLE>
<CAPTION>


                                                                             NET
MORTGAGE                                                        MORTGAGE   MORTGAGE   CURRENT  ORIGINAL  SCHEDULED
LOAN                                          ZIP     PROPERTY  INTEREST   INTEREST   MONTHLY   TERM TO   MATURITY
NUMBER       CITY                  STATE      CODE      TYPE      RATE       RATE     PAYMENT  MATURITY     DATE
- ------       ----                  -----      ----      ----      ----       ----     -------  --------     ----
<S>          <C>                    <C>      <C>         <C>      <C>       <C>      <C>          <C>     <C> 
4638021      EAST BRUNSWICK         NJ       08816       SFD      7.000     6.734    $2,022.37    180     1-Aug-12
4638040      GLASTONBURY            CT       06033       SFD      7.250     6.984    $2,382.58    180     1-Aug-12
4638055      WOODRIDGE              IL       60517       SFD      7.500     7.234    $2,475.13    180     1-Jul-12
4638160      BERNARDS TOWNSHIP      NJ       07920       SFD      7.750     7.484    $3,934.54    180     1-Aug-12
4649957      LAKEWOOD TOWNSHIP      MN       55804       SFD      7.500     7.234    $2,684.63    180     1-Oct-12
4625689      PLANTATION             FL       33324       SFD      7.250     6.984    $2,044.82    180     1-Jul-12
4646819      MCLEAN                 VA       22102       SFD      7.500     7.234    $4,356.96    180     1-Sep-12
4646833      LARCHMONT              NY       10538       SFD      8.000     7.734    $2,866.96    180     1-Sep-12
4646845      SAN JOSE               CA       95135       SFD      7.500     7.234    $2,781.04    180     1-Sep-12
4646852      HARDING TWP            NJ       07976       SFD      7.875     7.609    $4,801.53    180     1-Sep-12
4646861      CORAL GABLES           FL       33146       SFD      7.000     6.734    $3,604.31    180     1-Sep-12
4646866      BOCA RATON             FL       33486       SFD      7.750     7.484    $3,426.25    180     1-Aug-12
4646876      FOSTER CITY            CA       94404       SFD      8.000     7.734    $3,134.54    180     1-Sep-12
4646911      MONTVILLE              NJ       07058       SFD      8.000     7.734    $3,397.35    180     1-Aug-12
4646921      BETHANY BEACH          DE       19930       SFD      7.625     7.359    $4,446.46    180     1-Sep-12
4646952      DENVER                 NC       28037       SFD      7.250     6.984    $5,933.61    180     1-Sep-12
4646957      AVON                   CT       06001       SFD      7.000     6.734    $2,336.96    180     1-Sep-12
4646984      MOORESVILLE            NC       28115       SFD      7.375     7.109    $3,679.70    180     1-Aug-12
4647742      CHAPEL HILL            NC       27514       SFD      7.375     7.109    $2,299.81    180     1-Aug-12
4648227      SAN JOSE               CA       95129       SFD      7.250     6.984    $2,833.53    180     1-Aug-12
4645682      LOOMIS                 CA       95650       SFD      7.750     7.484    $3,021.50    180     1-Sep-12
4645696      SALISBURY              MD       21801       SFD      7.375     7.109    $4,138.74    180     1-Sep-12
4645705      MAPLE VALLEY           WA       98038       SFD      7.250     6.984    $2,528.64    180     1-Sep-12
4645709      SAN CLEMENTE           CA       92672       SFD      7.250     6.984    $2,556.02    180     1-Sep-12
4645886      CARLTON                OR       97111       SFD      7.250     6.984    $2,096.39    180     1-Aug-12
4646091      FALLS CHURCH           VA       22043       SFD      7.250     6.984    $2,738.59    180     1-Sep-12
4646324      SONOMA                 CA       95476       SFD      7.875     7.609    $2,576.94    180     1-Sep-12
4646336      WOODSIDE               CA       94062       SFD      7.875     7.609    $4,772.60    180     1-Sep-12
4646348      WESTON                 CT       06883       SFD      7.875     7.609    $3,300.61    180     1-Sep-12
4646361      ATLANTA                GA       30327       SFD      7.250     6.984    $2,190.88    180     1-Sep-12
4646372      PARKLAND               FL       33067       SFD      7.750     7.484    $2,560.28    180     1-Sep-12
4649242      COPPER MOUNTAIN        CO       80443       SFD      7.625     7.359    $2,900.48    180     1-Sep-12
4649727      WAKE FOREST            NC       27587       SFD      7.000     6.734    $4,044.73    180     1-Sep-12
4652224      MONROE                 LA       71201       SFD      7.500     7.234    $4,171.56    180     1-Sep-12
4652241      RALEIGH                NC       27608       SFD      7.000     6.734    $1,977.42    180     1-Sep-12
4652250      WALNUT                 CA       91789       SFD      7.375     7.109    $4,871.91    180     1-Sep-12
4652255      SOUTH SAN FRANCISCO    CA       94080       SFD      7.750     7.484    $2,108.46    180     1-Sep-12
4652259      VIENNA                 VA       22181       SFD      7.375     7.109    $2,161.82    180     1-Sep-12
4652272      TUCSON                 AZ       85750       SFD      7.000     6.734    $2,696.49    180     1-Sep-12
4652281      EASTON                 MD       21601       SFD      7.500     7.234    $2,646.63    180     1-Sep-12
4652284      CORDOVA                TN       38018       SFD      7.500     7.234    $2,438.05    180     1-Sep-12
4652305      AUSTIN                 TX       78746       SFD      7.250     6.984    $2,549.63    180     1-Sep-12
4652331      CORONADO               CA       92118       HCO      7.375     7.109    $2,713.77    180     1-Sep-12
4657509      SEVERNA PARK           MD       21146       SFD      7.375     7.109    $4,599.62    180     1-Oct-12
4657566      EASTON                 MD       21601       SFD      7.500     7.234    $3,970.86    180     1-Sep-12
4657584      PASADENA               MD       21122       SFD      7.500     7.234    $6,025.59    180     1-Oct-12
4657588      DANVILLE               CA       94526       SFD      7.375     7.109    $2,750.57    180     1-Sep-12
4657597      HUNTINGTON BEACH       CA       92646       SFD      7.625     7.359    $2,391.37    180     1-Oct-12
4657654      SAN FRANCISCO          CA       94112       SFD      7.375     7.109    $2,362.36    180     1-Oct-12
4657665      LONGMONT               CO       80501       SFD      7.375     7.109    $2,382.60    180     1-Oct-12
4657669      KNOXVILLE              TN       37919       SFD      7.375     7.109    $2,378.00    180     1-Sep-12
4657909      WAYNE                  NJ       07472       SFD      7.625     7.359    $4,670.65    180     1-Oct-12
4628367      NESHANIC STATION       NJ       08853       SFD      7.500     7.484    $2,864.47    180     1-Apr-12
4628385      YARLEY                 PA       19067       SFD      7.375     7.359    $2,502.20    180     1-Dec-10
4628684      PRINCETON              NJ       08540       SFD      7.375     7.359    $2,299.81    180     1-Oct-10
4628774      PLEASANTON             CA       94588       SFD      7.750     7.734    $2,070.81    180     1-Sep-09
4628785      PONTE VEDRA BEACH      FL       32082       SFD      7.500     7.484    $3,012.80    180     1-Jun-12
4628792      STOCKTON               NJ       08559       SFD      7.750     7.734    $2,109.87    180     1-Aug-09
4628806      HOPKINTON              MA       01748       SFD      7.500     7.484    $2,489.03    180     1-Dec-11
4628817      PRINCETON              NJ       08540       SFD      7.375     7.359    $2,391.81    180     1-Jul-10
4633513      BEACHWOOD              OH       44122       SFD      7.750     7.484    $2,353.19    180     1-Sep-12
4650021      MILLSTONE              NJ       07728       SFD      7.250     6.984    $2,888.30    180     1-Nov-12
4640656      PANAMA CITY            FL       32401       SFD      7.875     7.609    $2,703.08    180     1-Aug-12
4640664      OXFORD                 GA       30267       SFD      7.500     7.234    $2,284.60    169     1-Sep-11
4643378      CELEBRATION            FL       34747       SFD      7.125     6.859    $1,957.05    180     1-Aug-12
4643406      PENSACOLA              FL       32503       SFD      7.250     6.984    $2,320.71    120     1-Feb-07
4643769      BOCA RATON             FL       33496       SFD      7.750     7.484    $2,425.67    180     1-Aug-12
4643778      FRANKLIN               TN       37064       SFD      7.500     7.234    $2,095.05    180     1-Aug-12
4651617      ALPHARETTA             GA       30202       SFD      6.750     6.484    $2,300.76    180     1-Sep-12
4651641      CLERMONT               FL       34711       SFD      8.000     7.734    $2,744.15    180     1-Aug-12
4651844      PALM HARBOR            FL       34684       SFD      7.500     7.234    $2,039.43    180     1-Sep-12
4651872      SAVANNAH               GA       31406       SFD      7.375     7.109    $2,713.77    180     1-Sep-12
4651900      BRENTWOOD              TN       37027       SFD      7.500     7.234    $2,966.44    180     1-Sep-12
</TABLE>


COUNT:        73
WAC:           7.477668751
WAM:         175.7450477
WALTV:        68.16788609


<PAGE>
<TABLE>
<CAPTION>
             CUT-OFF
MORTGAGE       DATE                          MORTGAGE             T.O.P.   MASTER
LOAN        PRINCIPAL                       INSURANCE   SERVICE  MORTGAGE  SERVICE
NUMBER       BALANCE       LTV     SUBSIDY     CODE       FEE      LOAN      FEE
- ------       -------       ---     -------     ----       ---      ----      ---
<S>        <C>            <C>      <C>          <C>      <C>      <C>       <C>
4638021    $222,857.94    90.00                 12       0.25               0.016
4638040    $258,568.26    90.00                 12       0.25               0.016
4638055    $263,744.12    77.73                          0.25               0.016
4638160    $414,271.15    49.76                          0.25               0.016
4649957    $288,725.37    80.00                          0.25               0.016
4625689    $221,208.88    80.00                          0.25               0.016
4646819    $467,152.21    38.37                          0.25               0.016
4646833    $298,260.30    34.68                          0.25               0.016
4646845    $298,182.26    60.00                          0.25               0.016
4646852    $503,281.77    75.00                          0.25               0.016
4646861    $398,462.34    55.31                          0.25               0.016
4646866    $360,752.88    80.00                          0.25               0.016
4646876    $325,594.61    56.07                          0.25               0.016
4646911    $352,397.37    90.00                          0.25               0.016
4646921    $473,147.21    79.73                          0.25               0.016
4646952    $645,974.82    54.17                          0.25               0.016
4646957    $258,354.63    62.35                          0.25               0.016
4646984    $396,313.33    63.49                          0.25               0.016
4647742    $247,695.85    73.75                          0.25               0.016
4648227    $307,508.00    80.00                          0.25               0.016
4645682    $319,097.12    79.65                          0.25               0.016
4645696    $447,144.10    90.00                 01       0.25               0.016
4645705    $275,284.64    50.36                          0.25               0.016
4645709    $278,266.07    75.68                          0.25               0.016
4645886    $227,503.00    69.99                          0.25               0.016
4646091    $298,142.22    44.31                          0.25               0.016
4646324    $270,106.97    90.57                 06       0.25               0.016
4646336    $500,249.65    80.00                          0.25               0.016
4646348    $345,959.61    80.18                          0.25               0.016
4646361    $238,312.55    75.00                          0.25               0.016
4646372    $270,387.59    80.00                          0.25               0.016
4649242    $307,098.83    90.00                 01       0.25               0.016
4649727    $447,152.26    66.18                          0.25               0.016
4652224    $447,273.39    69.23                          0.25               0.016
4652241    $218,607.77    75.89                          0.25               0.016
4652250    $526,355.91    80.00                          0.25               0.016
4652255    $222,672.14    80.00                          0.25               0.016
4652259    $233,560.49    77.05                          0.25               0.016
4652272    $297,299.17    61.35                          0.25               0.016
4652281    $283,770.11    56.53                          0.25               0.016
4652284    $261,406.45    59.77                          0.25               0.016
4652305    $277,570.41    70.00                          0.25               0.016
4652331    $293,192.96    57.84                          0.25               0.016
4657509    $498,473.30    47.06                          0.25               0.016
4657566    $425,754.57    59.49                          0.25               0.016
4657584    $648,036.91    59.09                          0.25               0.016
4657588    $297,168.45    79.52                          0.25               0.016
4657597    $255,235.30    80.00                          0.25               0.016
4657654    $256,015.89    80.00                          0.25               0.016
4657665    $258,209.17    79.69                          0.25               0.016
4657669    $256,916.55    69.86                          0.25               0.016
4657909    $498,506.43    80.00                          0.25               0.016
4628367    $302,343.69    69.44                          0.25               0.016
4628385    $251,549.03    80.00                          0.25               0.016
4628684    $204,270.18    53.76                          0.25               0.016
4628774    $192,107.64    60.61                          0.25               0.016
4628785    $320,030.52    61.33                          0.25               0.016
4628792    $190,672.86    68.97                          0.25               0.016
4628806    $259,296.02    69.11                          0.25               0.016
4628817    $230,396.59    55.91                          0.25               0.016
4633513    $248,288.95    51.12                          0.25               0.016
4650021    $316,400.00    77.17                          0.25               0.016
4640656    $282,485.27    95.00                 24       0.25               0.016
4640664    $233,734.15    56.00                          0.25               0.016
4643378    $211,997.35    74.99                          0.25               0.016
4643406    $187,286.97    26.36                          0.25               0.016
4643769    $255,401.15    28.01                          0.25               0.016
4643778    $223,939.52    79.30                          0.25               0.016
4651617    $258,318.76    70.22                          0.25               0.016
4651641    $279,219.85    60.45                          0.25               0.016
4651844    $218,465.74    77.19                          0.25               0.016
4651872    $293,192.96    68.93                          0.25               0.016
4651900    $318,061.08    49.23                          0.25               0.016
</TABLE>
<PAGE>
NASCOR
NMI / 1997-20  Exhibit F-3 (Part B)
15 YEAR FIXED RATE RELOCATION AND NON-RELOCATION LOANS





MORTGAGE                                       NMI
LOAN                                           LOAN
NUMBER       SERVICER                          SELLER

4638021      COLUMBIA NATIONAL, INC.           COLUMBIA NATIONAL, INC.
4638040      COLUMBIA NATIONAL, INC.           COLUMBIA NATIONAL, INC.
4638055      COLUMBIA NATIONAL, INC.           COLUMBIA NATIONAL, INC.
4638160      COLUMBIA NATIONAL, INC.           COLUMBIA NATIONAL, INC.
4649957      FIRST BANK NATIONAL ASSOC.        FIRST BANK NATIONAL ASSOC.
4625689      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646819      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646833      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646845      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646852      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646861      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646866      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646876      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646911      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646921      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646952      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646957      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4646984      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4647742      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4648227      FIRST UNION MORTGAGE CORP         FIRST UNION MORTGAGE CORP
4645682      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4645696      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4645705      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4645709      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4645886      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4646091      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4646324      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4646336      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4646348      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4646361      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4646372      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4649242      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4649727      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652224      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652241      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652250      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652255      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652259      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652272      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652281      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652284      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652305      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4652331      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657509      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657566      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657584      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657588      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657597      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657654      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657665      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657669      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4657909      FT MORTGAGE COMPANIES             FT MORTGAGE COMPANIES
4628367      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628385      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628684      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628774      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628785      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628792      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628806      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4628817      GREAT FINANCIAL BANK              GREAT FINANCIAL BANK
4633513      HUNTINGTON MORTGAGE COMPANY       HUNTINGTON MORTGAGE COMPANY
4650021      HUNTINGTON MORTGAGE COMPANY       HUNTINGTON MORTGAGE COMPANY
4640656      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4640664      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4643378      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4643406      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4643769      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4643778      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4651617      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4651641      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4651844      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4651872      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
4651900      SUNTRUST MORTGAGE, INC.           SUNTRUST MORTGAGE, INC.
73


COUNT:       73
WAC:          7.477668751
WAM:        175.7450477
WALTV:       68.16788609


<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 1997-20


     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 1997-20, the documents referred to
below (the  "Documents").  All capitalized  terms not otherwise  defined in this
Request  for  Release  shall have the  meanings  given them in the  Pooling  and
Servicing  Agreement  dated as of November 26, 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 1997-20, 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 (except to the extent provided in applicable  Treasury  regulations)
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 such 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 (or,
to the extent  provided in applicable  Treasury  regulations,  certain trusts in
existence  on August 20, 1996 which are  eligible to elect to be treated as U.S.
Persons).

     8.  That  the  Purchaser  agrees  to such  amendments  of the  Pooling  and
Servicing Agreement as may be required to further effectuate the restrictions on
transfer of the Class A-R Certificate to such a "disqualified  organization," an
agent thereof,  an ERISA Prohibited Holder or a person that does not satisfy the
requirements of paragraph 4, paragraph 5 and paragraph 7 hereof.

     9. That the Purchaser consents to the designation of the Master Servicer as
its agent to act as "tax matters  person" of the REMIC  pursuant to Section 3.01
of the Pooling and Servicing Agreement, and if such designation is not permitted
by the Code and applicable  law, to act as tax matters person if requested to do
so.



<PAGE>



     IN WITNESS WHEREOF, the Purchaser has caused this instrument to be executed
on its behalf, pursuant to authority of its Board of Directors, by its [Title of
Officer] this ___ day of , 19 __.

                                                    [NAME OF PURCHASER]


                                                  By:__________________________
                                                     [Name of Officer]
                                                     [Title of Officer]


     Personally  appeared before me the above-named [Name of Officer],  known or
proved to me to be the same person who executed the foregoing  instrument and to
be the [Title of Officer],  of the  Purchaser,  and  acknowledged  to me that he
[she] executed the same as his [her] free act and deed and the free act and deed
of the Purchaser.


     Subscribed and sworn before me this __ day of , 19 __.

- -----------------------------
NOTARY PUBLIC

COUNTY OF____________________

STATE OF_____________________

My commission expires the __ day of __________, 19__.


<PAGE>






                                    EXHIBIT I





                [Letter from Transferor of Class A-R Certificate]





                                     [Date]




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

     Re:  Norwest Asset Securities Corporation, Series 1997-20, 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 1997-20
                 CLASS [A-PO][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 1997-20, Class
[A-PO][A-WIO][B-3][B-4][B-5]          Certificates          (the          "Class
[A-PO][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 November 26, 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 1997-20.

     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-PO][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-PO][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-PO][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-PO][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-PO][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-PO][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-PO][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-PO][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-PO][A-WIO][B-3][B-4][B-5]  Certificates  other than in connection
     with a subsequent sale of Class [A-PO][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-PO][A-WIO][B-3][B-4][B-5] Certificates.

          (a)     The     Purchaser      understands      that     the     Class
     [A-PO][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-PO][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-PO][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-PO][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-PO][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 1997-20
                       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 1997-20, 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 November 26, 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 1997-20.

     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

                    Great Financial Bank Servicing Agreement

                   Suntrust Mortgage, Inc. Servicing Agreement

               The Huntington Mortgage Company Servicing Agreement

               First Bank National Association Servicing Agreement

                    FT Mortgage Companies Servicing Agreement

                   Columbia National, Inc. Servicing Agreement




<PAGE>



                                    EXHIBIT M
                      [FORM OF SPECIAL SERVICING AGREEMENT]

                 SPECIAL SERVICING AND COLLATERAL FUND AGREEMENT

     This SPECIAL  SERVICING AND COLLATERAL FUND AGREEMENT (the  "Agreement") is
made and entered into as of ,  _____________  between  Norwest  Bank  Minnesota,
National  Association (the "Company" and "Norwest Bank") and _____________  (the
"Purchaser").

                              PRELIMINARY STATEMENT

     _____________________________  is the  holder  of the  entire  interest  in
Norwest Asset Securities Corporation Mortgage Pass-Through Certificates,  Series
1997-20, Class ____ (the "Class B Certificates").  The Class B Certificates were
issued  pursuant to a Pooling and Servicing  Agreement  dated as of November 26,
1997 among Norwest Asset Securities Corporation,  as Seller ("NASCOR"),  Norwest
Bank  Minnesota,  National  Association,  as Master  Servicer  and  First  Union
National Bank, as Trustee.

     ___________________________________  intends  to resell  all of the Class B
Certificates directly to the Purchaser on or promptly after the date hereof.

     In  connection  with such sale,  the  parties  hereto  have agreed that the
Company will cause, to the extent that the Company as Master Servicer is granted
such authority in the related Servicing Agreements,  the related servicers (each
a related "Servicer"), which service the Mortgage Loans which comprise the Trust
Estate  related  to the above  referenced  series  under the  related  servicing
agreements (each a related "Servicing Agreement"),  to engage in certain special
servicing  procedures relating to foreclosures for the benefit of the Purchaser,
and that the  Purchaser  will deposit  funds in a  collateral  fund to cover any
losses  attributable  to such  procedures  as well as all  advances and costs in
connection therewith, as set forth herein.

     In consideration of the mutual agreements herein contained, the receipt and
sufficiency  of which are hereby  acknowledged,  the Company  and the  Purchaser
agree that the following  provisions shall become effective and shall be binding
on and enforceable by the Company and the Purchaser:



                                    ARTICLE I

                                   DEFINITIONS

     Section 1.01 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  it (i) is not  confidential  in  nature  and (ii) is  obtainable  by the
related  Servicer  from  existing  reports,  certificates  or  statements  or is
otherwise readily  accessible to its servicing  personnel.  The Purchaser agrees
that it has no right to deal with the mortgagor during such period.  However, if
such servicing activities include acceptance of a deed-in-lieu of foreclosure or
short  payoff,  the  Purchaser  will be notified and given two Business  Days to
respond.

     (c) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay Foreclosure, the Purchaser shall obtain a Current Appraisal as
soon as practicable,  but in no event more than 15 business days thereafter, and
shall provide the Company with a copy of such Current Appraisal.

     (d) Within two Business  Days of making any Election to Delay  Foreclosure,
the Purchaser  shall remit by wire  transfer to the Company,  for deposit in the
Collateral  Fund, an amount,  as calculated by the Company,  equal to the sum of
(i) 125% of the greater of the unpaid principal balance of the Mortgage Loan and
the value shown in the Current  Appraisal  referred to in  subsection  (c) above
(or, if such Current Appraisal has not yet been obtained, the Company's estimate
thereof,  in which case the  required  deposit  under this  subsection  shall be
adjusted upon obtaining such Current Appraisal), and (ii) three months' interest
on the Mortgage Loan at the applicable  Mortgage  Interest Rate. If any Election
to Delay Foreclosure extends for a period in excess of three months (such excess
period  being  referred to herein as the "Excess  Period"),  within two Business
Days the  Purchaser  shall remit by wire  transfer in advance to the Company for
deposit in the Collateral Fund the amount of each additional  month's  interest,
as  calculated  by the Company,  equal to interest on the  Mortgage  Loan at the
applicable  Mortgage  Interest  Rate for the  Excess  Period.  The terms of this
Agreement  will no longer apply to the  servicing of any Mortgage  Loan upon the
failure of the  Purchaser  to deposit any of the above  amounts  relating to the
Mortgage Loan within two Business Days of the Election to Delay  Foreclosure  or
within two Business Days of the  commencement  of the Excess  Period  subject to
Section 3.01.

     (e) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay Foreclosure, the Company may withdraw from the Collateral Fund
from time to time amounts  necessary to reimburse  the related  Servicer for all
related  Monthly  Advances  and  Liquidation  Expenses  thereafter  made by such
Servicer in accordance with the Pooling and Servicing  Agreement and the related
Servicing  Agreement.  To the  extent  that the  amount of any such  Liquidation
Expenses is determined by the Company based on estimated  costs,  and the actual
costs are  subsequently  determined  to be higher,  the Company may withdraw the
additional  amount from the Collateral Fund. In the event that the Mortgage Loan
is brought current by the mortgagor and the foreclosure  action is discontinued,
the amounts so withdrawn from the Collateral Fund shall be redeposited if and to
the extent that reimbursement therefor from amounts paid by the mortgagor is not
prohibited  pursuant  to the  Pooling  and  Servicing  Agreement  or the related
Servicing  Agreement,  applicable law or the related  mortgage  note.  Except as
provided in the preceding  sentence,  amounts withdrawn from the Collateral Fund
to cover Monthly  Advances and  Liquidation  Expenses  shall not be  redeposited
therein or otherwise reimbursed to the Purchaser.  If and when any such Mortgage
Loan  is  brought  current  by  the  mortgagor,  all  amounts  remaining  in the
Collateral  Fund in respect of such  Mortgage  Loan  (after  adjustment  for all
permitted  withdrawals  and  deposits  pursuant  to this  subsection)  shall  be
released to the Purchaser.

     (f) With respect to any Mortgage Loan as to which the Purchaser has made an
Election to Delay  Foreclosure,  the related  Servicer shall continue to service
the Mortgage Loan in accordance  with its customary  procedures  (other than the
delay in  Commencement  of  Foreclosure  as  provided  herein).  If and when the
Purchaser shall notify the Company that it believes that it is appropriate to do
so, the related  Servicer may proceed with the  Commencement of Foreclosure.  In
any event,  if the Mortgage Loan is not brought  current by the mortgagor by the
time the loan becomes 6 months  delinquent,  the  Purchaser's  election shall no
longer be effective  and at the  Purchaser's  option,  either (i) the  Purchaser
shall  purchase  the Mortgage  Loan from the related  Trust Estate at a purchase
price equal to the fair market  value as shown on the Current  Appraisal,  to be
paid by (x) applying any balance in the Collateral Fund to such to such purchase
price, and (y) to the extent of any deficiency,  by wire transfer of immediately
available  funds from the  Purchaser  to the  Company for deposit in the related
Certificate  Account;  or (ii)  the  related  Servicer  shall  proceed  with the
Commencement of Foreclosure.

     (g) Upon the occurrence of a liquidation  with respect to any Mortgage Loan
as to which the Purchaser made an Election to Delay  Foreclosure and as to which
the  related  Servicer   proceeded  with  the  Commencement  of  Foreclosure  in
accordance with subsection (f) above, the Company shall calculate the amount, if
any, by which the value shown on the Current Appraisal obtained under subsection
(c) exceeds the actual sales price obtained for the related  Mortgaged  Property
(net of  Liquidation  Expenses  and  accrued  interest  related to the  extended
foreclosure  period),  and the Company shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining  in the  Collateral  Fund in respect of such
Mortgage  Loan (after  adjustment  for all  permitted  withdrawals  and deposits
pursuant to this Agreement) shall be released to the Purchaser.

     Section 2.03 Purchaser's Election to Commence Foreclosure Proceedings

     (a) In  connection  with any  Mortgage  Loan  identified  in a report under
Section 2.01(a)(i)(B), the Purchaser may elect to instruct the Company to cause,
to the extent that the Company as Master  Servicer is granted such  authority in
the  related  Servicing  Agreement,  the related  Servicer  to proceed  with the
Commencement  of  Foreclosure  as soon as  practicable.  Such  election  must be
evidenced by written notice  received by the Company by 5:00 p.m., New York City
time,  on the third  Business  Day  following  the delivery of such report under
Section 2.01(a)(i).

     (b) Within two  Business  Days of making any  Election  to  Foreclose,  the
Purchaser  shall remit to the Company,  for deposit in the  Collateral  Fund, an
amount,  as  calculated  by the  Company,  equal to 125% of the  current  unpaid
principal balance of the Mortgage Loan and three months interest on the Mortgage
Loan at the  applicable  Mortgage  Interest  Rate. If and when any such Mortgage
Loan is brought current by the mortgagor,  all amounts in the Collateral Fund in
respect of such Mortgage Loan (after  adjustment  for all permitted  withdrawals
and deposits  pursuant to this Agreement)  shall be released to the Purchaser if
and to the extent that reimbursement therefor from amounts paid by the mortgagor
is not prohibited pursuant to the Pooling and Servicing Agreement or the related
Servicing  Agreement,  applicable law or the related mortgage note. The terms of
this  Agreement  will no longer apply to the servicing of any Mortgage Loan upon
the  failure of the  Purchaser  to deposit  the above  amounts  relating  to the
Mortgage Loan within two Business  Days of the Election to Foreclose  subject to
Section 3.01.

     (c) With respect to any Mortgage Loan as to which the Purchaser has made an
Election  to  Foreclose,  the  related  Servicer  shall  continue to service the
Mortgage  Loan  in  accordance  with  its  customary   procedures   (other  than
Commencement of Foreclosure as provided herein).  In connection  therewith,  the
Company shall have the same rights to make  withdrawals for Monthly Advances and
Liquidations  Expenses from the  Collateral  Fund as are provided  under Section
2.02(e), and the Company shall make reimbursements thereto to the limited extent
provided under such subsection in accordance with its customary procedures.  The
Company shall not be required to cause, to the extent that the Company as Master
Servicer is granted  such  authority  in the related  Servicing  Agreement,  the
related Servicer to proceed with the Commencement of Foreclosure if (i) the same
is stayed as a result of the  mortgagor's  bankruptcy or is otherwise  barred by
applicable  law, or to the extent that all legal  conditions  precedent  thereto
have not yet been complied with, or (ii) the Company  believes there is a breach
of representations or warranties by the Company, a Servicer,  or a Seller, which
may result in a repurchase or  substitution  of such Mortgage Loan, or (iii) the
Company or related Servicer  reasonably  believes the Mortgaged  Property may be
contaminated with or affected by hazardous wastes or hazardous  substances (and,
without  limiting  the  related   Servicer's  right  not  to  proceed  with  the
Commencement of Foreclosure, the Company supplies the Purchaser with information
supporting  such  belief).  Any  foreclosure  that  has  been  initiated  may be
discontinued  (x) without  notice to the Purchaser if the Mortgage Loan has been
brought  current or if a refinancing  or  prepayment  occurs with respect to the
Mortgage Loan  (including by means of a short payoff  approved by the Purchaser)
or (y) with  notice to the  Purchaser  if the related  Servicer  has reached the
terms of a forbearance  agreement unless  instructed  otherwise by the Purchaser
within two Business Days of such  notification.  Any such  instruction  shall be
based upon a decision that such forbearance  agreement is not in conformity with
reasonable servicing practices.

     (d) Upon the occurrence of a liquidation  with respect to any Mortgage Loan
as to which the  Purchaser  made an  Election to  Foreclose  and as to which the
related  Servicer  proceeded with the  Commencement of Foreclosure in accordance
with subsection (c) above,  the Company shall  calculate the amount,  if any, by
which  the  unpaid  principal  balance  of the  Mortgage  Loan  at the  time  of
liquidation  (plus  all  unreimbursed   interest  and  servicing   advances  and
Liquidation  Expenses  in  connection  therewith  other than those paid from the
Collateral  Fund)  exceeds  the actual  sales  price  obtained  for the  related
Mortgaged  Property,  and the Company  shall  withdraw the amount of such excess
from the  Collateral  Fund,  shall remit the same to the Trust Estate and in its
capacity as Master  Servicer  shall apply such amount as additional  Liquidation
Proceeds  pursuant to the Pooling and  Servicing  Agreement.  After  making such
withdrawal,  all amounts  remaining in the Collateral Fund (after adjustment for
all  withdrawals  and  deposits  pursuant to  subsection  (c) in respect of such
Mortgage Loan shall be released to the Purchaser.

     Section 2.04 Termination

     (a) With respect to all Mortgage  Loans  included in the Trust Estate,  the
Purchaser's  right to make any Election to Delay  Foreclosure or any Election to
Foreclose and the Company's  obligations  under Section 2.01 shall terminate (i)
at such  time as the  Principal  Balance  of the Class B  Certificates  has been
reduced  to  zero,  (ii) if the  greater  of (x) 43% (or such  lower  or  higher
percentage  that  represents  the  related  Servicer's  actual  historical  loss
experience  with respect to the Mortgage Loans in the related pool as determined
by the Company) of the aggregate  principal  balance of all Mortgage  Loans that
are in  foreclosure or are more than 90 days  delinquent on a contractual  basis
and REO  properties  or (y) the  aggregate  amount  that the  Company  estimates
through the normal servicing  practices of the related Servicer will be required
to be withdrawn  from the  Collateral  Fund with respect to Mortgage Loans as to
which the Purchaser has made an Election to Delay  Foreclosure or an Election to
Foreclosure,  exceeds  (z) the  then-current  principal  balance  of the Class B
Certificates,  (iii) upon any transfer by the  Purchaser of any interest  (other
than the minority interest therein,  but only if the transferee provides written
acknowledgment  to the Company of the Purchaser's  right hereunder and that such
transferee will have no rights  hereunder) in the Class B Certificates  (whether
or not such transfer is registered  under the Pooling and Servicing  Agreement),
including any such transfer in connection with a termination of the Trust Estate
or (iv) upon any breach of the terms of this Agreement by the Purchaser.

     (b)  Except as set forth in  2.04(a),  this  Agreement  and the  respective
rights,  obligations  and  responsibilities  of the  Purchaser  and the  Company
hereunder shall  terminate upon the later to occur of (i) the final  liquidation
of the last Mortgage  Loan as to which the Purchaser  made any Election to Delay
Foreclosure  or any Election to Foreclose  and the  withdrawal  of all remaining
amounts in the  Collateral  Fund as provided  herein and (ii) ten Business Days'
notice.  The Purchaser's  right to make an election  pursuant to Section 2.02 or
Section 2.03 hereof with respect to a particular  Mortgage Loan shall  terminate
if the Purchaser fails to make any deposit required  pursuant to Section 2.02(d)
or 2.03(b) or if the Purchaser fails to make any other deposit to the Collateral
Fund pursuant to this Agreement.



                                   ARTICLE III

                       COLLATERAL FUND; SECURITY INTEREST

     Section 3.01. Collateral Fund

     Upon  receipt  from the  Purchaser  of the  initial  amount  required to be
deposited  in the  Collateral  Fund  pursuant to Article  II, the Company  shall
establish and maintain with Bankers Trust Company as a segregated account on its
books and records an account (the  "Collateral  Fund"),  entitled  "Norwest Bank
Minnesota,  National  Association,  as  Master  Servicer,  for  the  benefit  of
registered holders of Norwest Asset Securities Corporation Mortgage Pass-Through
Certificates, Series 1997-16. Amounts held in the Collateral Fund shall continue
to be the  property of the  Purchaser,  subject to the first  priority  security
interest  granted  hereunder  for the benefit of the  Certificateholders,  until
withdrawn from the Collateral Fund pursuant to Section 2.02 or 2.03 hereof.  The
Collateral  Fund shall be an "outside  reserve  fund"  within the meaning of the
REMIC  Provisions,  beneficially  owned by the Purchaser for federal  income tax
purposes.  All income,  gain,  deduction or loss with respect to the  Collateral
Fund shall be that of the Purchaser.  All  distributions  from the Trust Fund to
the  Collateral  Fund shall be treated as  distributed  to the  Purchaser as the
beneficial owner thereof.

     Upon the  termination of this Agreement and the liquidation of all Mortgage
Loans as to which the  Purchaser has made any Election to Delay  Foreclosure  or
any Election to Foreclose  pursuant to Section  2.04 hereof,  the Company  shall
distribute or cause to be distributed to the Purchaser all amounts  remaining in
the Collateral Fund (after adjustment for all deposits and permitted withdrawals
pursuant to this Agreement)  together with any investment  earnings thereon.  In
the  event the  Purchaser  has made any  Election  to Delay  Foreclosure  or any
Election to Foreclose, prior to any distribution to the Purchaser of all amounts
remaining in the Collateral  Fund, funds in the Collateral Fund shall be applied
consistent with the terms of this Agreement.

     Section 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:   ________________________



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