Section 9--602. Waiver and Variance of Rights and Duties.
    Except  as  otherwise  provided  in Section 9--624, to the extent that
  they give rights to a debtor or obligor and impose duties on  a  secured
  party,  the  debtor or obligor may not waive or vary the rules stated in
  the following listed sections:
    (a) Section 9--207 (b) (4) (C), which deals with use and operation  of
  the collateral by the secured party;
    (b) Section  9--210,  which  deals with requests for an accounting and
  requests concerning a list of collateral and statement of account;
    (c) Section 9--607 (c), which deals with collection and enforcement of
  collateral;
    (d) Sections 9--608 (a) and 9--615 (c) to the extent  that  they  deal
  with   application   or  payment  of  noncash  proceeds  of  collection,
  enforcement, or disposition;
    (e) Sections 9--608 (a) and 9--615 (d) to the extent that they require
  accounting for or payment of surplus proceeds of collateral;
    (f) Section 9--609 to the extent that it imposes upon a secured  party
  that takes possession of collateral without judicial process the duty to
  do so without breach of the peace;
    (g) Sections  9--610  (b), 9--611, 9--613, and 9--614, which deal with
  disposition of collateral;
    (h) Section 9--615 (f), which deals with calculation of  a  deficiency
  or  surplus  when  a  disposition is made to the secured party, a person
  related to the secured party, or a secondary obligor;
    (i) Section 9--616, which deals with explanation of the calculation of
  a surplus or deficiency;
    (j) Sections 9--620, 9--621, and 9--622, which deal with acceptance of
  collateral in satisfaction of obligation;
    (k) Section 9--623, which deals with redemption of collateral;
    (l) Section 9--624, which deals with permissible waivers; and
    (m) Sections 9--625 and 9--626, which deal with  the  secured  party's
  liability for failure to comply with this article.