[Dan_in_WA]

I finally bit the bullet and teased the whole switch and pot apart, since there was an odd 'bump' in the rotary travel of the pot, about 1/3 the way through. Felt like a detent in the motion of the switch.

The center solder lug was loose, gently crimped it back down and all was well.

I took a picture with my phone, but due to technical difficulties I was unable to get it off the phone. Software issue, according to the PC.  Probably because it's an old, dumb flip phone. Probably hasn't been supported since George W was President!  Even my daughter couldn't get it to work... so I don't feel bad.

No shortcuts with this anyway, had to bend back another set of tabs to get the switch off the back of the pot.

Got it back together, it doesn't look like it was ever apart. Resistance reads are good.

Thank you all for the advice!  This little project is getting to be a head banger.

Dan