I'm on my second broken gear in as many weeks on 800K floppy drives. The first was on a 512Ke that I sold last week(I had to do a last minute swap from my spare SE when I realized it was dead) while I found the second this evening in a Mac Plus I was given today. Basically, what I'm finding is that the smallest nylon gear in the eject motor assembly-the one that engages the metal pinion on the motor-seems to shed its teeth when the eject mechanism and/or motor gets gummy(I suppose it's the weakest link). Of course, I always service the eject mechanism, but sometimes I end up being too late to save the motor. Short of buying a replacement drive, is there a source for these drive gears? I've hunted on Ebay and am coming up short. I'd prefer to fix the drives I have, although admittedly I wouldn't want to dump a bunch of money on one small replacement part when complete working drives are $30-40. I'm also considering taking a dead gear over to the engineering school at my university and seeing if they'd want to take on reconstructing it in CAD and then 3D printing it, although I don't know how feasible this would be. Any thoughts on any of the above?