[Jukebox-list] Wurlitzer 616 Questions

Hi, I've had this Wirlitzer 616 for many years and have it torn down for the fourth time. It would work good for a few years and then 2 trays would come out, the turntable would come up and jam and shred the 5" main fiber gear. I would like to do this right this time. My questions are; Is the bushings for the mech available? Has anyone ever seen or used the 5" metal gear that occasionally comes up on ebay? Thanks. Doug