i know that was a common problem with the 05 stams. i had a different kisslock problem where it was misaligned in such a way that whenever i would close and open the bag, the kisslock itself would scratch the top of the frame.
what you can do is contact marc jacobs (firstname.lastname@example.org) and they'll refer you to an authorized repair facility. i sent mine to moda express. i got it back within two weeks, and they even cleaned it for me!
i hope that helps.
hi tadpolenyc!^ i didn't have to pay for the repair. that's what so great about the service. they did a great job, it was done quickly, and it was free!