Opened it up finally... Gets decent compression.
The plastic bushings on the gear that the motor goes straight to are worn out, though, and the gears all need a shim-job, since there's no shims at all. There's no real wear on the gear teeth, including the pinion gear, though. Only 1 tooth out of all the gears has a small flaw. The teeth on the plastic/polycarb piston are still almost like-new, even.
Anyone got some shims I could have? I hate asking for stuff, but I have no money. I can make you some jewelry, or maybe do some work around your place or what not.
~Brian