[twinmill28]

Thanks for all the inputs folks.

I can adjust the driver mirror up and down by hand, no gear stripping noise, and it has some resistance so it holds where placed by hand.
The driver mirror adjusts left and right, just not up and down. Passenger mirror makes all adjustments.
When I try to get the mirrors to fold in, the passenger mirror makes it's up and down movement then does nothing else. The driver mirror doesn't do anything.
I folded them both in several times by hand and pressed the button to have them power out, and they worked fine. I thought there was something about resetting them by folding them in and out, that's why I tried a couple of times to get them to work, but no dice.
I had a tendency to "shotgun" parts replacement in the past, but would rather not buy a mirror assembly if not needed.