[HowardWoodard]

I can't believe you did that, but I sure am appreciative. It validates my conjecture about how it would have worked before the end-ball separated. I don't see any residue around where the ball mates with the shaft which is what I would expect to see for soldering, brazing, or any other wicking process, so the joining remains a mystery.

A simpler and more durable design would have been to have the vernier shaft end in a reverse cone tall enough to act as the restraint against the three ball bearings. If I had a lathe and knew what I was doing, I would give that a try. ...and if frogs had wings, they wouldn't need shock absorbers...

So a 38-116 could be a donor. I wonder what other models could be donors? It would help to know.

Thanks again and I'll continue trying to find another working drive unit to purchase.

Howard
Puyallup, WA