I've stripped the threads in the eyepiece holder of my etc 90. It's plastic and I got a bit too aggressive tightening it.
Can you pass on how you solved your problem?
The eyepiece holder is a press fit, and with a little persuation comes right out. In fact, it has a reputation of falling out on occasion.
I found a replacement for my firend's scope through Bill at https://telescope-warehouse.com. You can reach him at firstname.lastname@example.org
Bill had a solution that he said it wasn't original equipment but would work with a little epoxy. He may have another.
If he can't help you, maybe remove the holder, take the screw out and put a dab of epoxy in the hole then put then screw back in would solve the problem?
If you use epoxy of any sort, I'd suggest carefully stuffing something in the hole so it doesn't get on the flip mirror or, worse, outgasses and gets on the primary mirror or inside of the corrector.
Ask me how I know! A part of the tube cover on an 8" LX-90 came off so I super glued it back on and put the cover back in place. Next time I went to observe I discovered a haze over the whole corrector that didn't come off with the usual blowing or even alcohol diluted with distilled water. Back to the factory for an expensive repair.
Edited by Tailspin45, 09 August 2020 - 01:25 PM.