Greg, have you tried the accurate polar alignment procedure? You get visual clarification of your mounts movements this way, not relying on the tic marks of the mounts alt/az adjusters. I would try 1 model that has been super modeled, and about 50-60 samples all over the sky. Doing it this way should get you there in 1 go, it's not an iterative procedure. This is what I did some time ago and haven't looked back.
Josh
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