Ryan
The term "springy oscillation" describes what I see when mainly centering the scope for visual use i.e. repetitive image movement with a period of maybe less than 1/2 second.
I've observed really minor play in both RA and DEC blocks (with tight clutches), it doesn't appear to be caused by loose hardware at either worm per-se, this was tested with the CW and OTA mounted. I've adjusted Gemini's TVC factor with no improvement (currently set to value 5). I need to do more experimenting to isolate the effect I'm trying to describe, it's possible that the oscillations are occurring on both axes, maybe due to a mechanical coupling on the 30" steel pier that the mount is bolted to.
I'll try to upload a video showing centering movement using RA and DEC commands.
Loren
