(a) The Borrower agrees that from time to time, at the expense of the Borrower, the Borrower will promptly execute and deliver, or otherwise authenticate, all further instruments and documents, and take all further action that may be necessary or desirable, or that the Collateral Agent may reasonably request, in order to perfect and protect any pledge or security interest granted or purported to be granted by the Borrower hereunder or to enable the Collateral Agent to exercise and enforce its rights and remedies hereunder with respect to any Collateral of the Borrower; provided, however, that in no event shall the Borrower be required to cause the notation of any security interest on any certificate of title.