(8) Section 9-1615, subsection (6), 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;

(9) Section 9-1616, which deals with explanation of the calculation of a surplus or deficiency;

(10) Sections 9-1620, 9-1621 and 9-1622, which deal with acceptance of collateral in satisfaction of obligation;

(11) Section 9-1623, which deals with redemption of collateral;

(12) Section 9-1624, which deals with permissible waivers; and

(13) Sections 9-1625 and 9-1626, which deal with the secured party's liability for failure to comply with this article.

Official Comment

1. Source. Former Section 9-501(3).

2. Waiver: In General. Section 1-102(3) addresses which provisions of the UCC are mandatory and which may be varied by agreement. With exceptions relating to good faith, diligence, reasonableness, and care, immediate parties, as between themselves, may vary its provisions by agreement. However, in the context of rights and duties after default, our legal system traditionally has looked with suspicion on agreements that limit the debtor's rights and free the secured party of its duties. As stated in former Section 9-501, Comment 4, "no mortgage clause has ever been allowed to clog the equity of redemption." The context of default offers great opportunity for overreaching. The suspicious attitudes of the courts have been grounded in common sense. This section, like former Section 9-501(3), codifies this longstanding and deeply rooted attitude. The specified rights of the debtor and duties of the secured party may not be waived or varied except as stated. Provisions that are not specified in this section are subject to the general rules in Section 1-102(3).

3. Nonwaivable Rights and Duties. This section revises former Section 9-501(3) by restricting the ability to waive or modify additional specified rights and duties: (i) duties under