Maryland Commercial Law Section 9-603

      (a)      The parties may determine by agreement the standards measuring the fulfillment of the rights of a debtor or obligor and the duties of a secured party under a rule stated in § 9-602 if the standards are not manifestly unreasonable.

      (b)      Subsection (a) does not apply to the duty under § 9-609 to refrain from breaching the peace.