Marantz told me the mechanism is discontinued, but gave me the part number in case I could find one on line
The entire mechanism needs replacing @ $150+ shipping, and I didn't want to spend that much to repair (it's available for anyone who provides a pickup slip). Anyway, I scored a great deal on a Audiolab 6000 CDT, which I won't have until late next week, but based on the reviews and owner comments, it should be a huge upgrade