you can get a rebuild kit for the SM420 but I don't believe the gears etc are made anymore. I can find 420's here locally for 100-150 but all for the small bolts, that is why I was asking. If it was just bearings, I'd pull it apart and rebuild it in a heartbeat, but I don't buy jut bearings causing it to pop out (done a few trannys, never had bearings do that although I could be wrong, once again!)