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Hi Chris,
I know your frustrations.
I have a Vixen SXW Sphinx that has similar problems. It seems to all be in a HUGE amount of backlash in the DEC axis. I wouldn't know how to pull a mount apart so I took mine into Tasco/Skywatcher here in Sydney. After a number of visits the problem was still there....they "did all that they could do"...
I found that I can autoguide for 10 to 15 minutes by raising the DEC BACKLASH setting in the Star Book to 90-95%.
Does your controller have a similar setting.
Also, contact Atalas (Louie) on this forum. He has a Vixen GPDX mount which he has just adjusted to reduce the DEC backlash.
Good luck.
Ross.
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