I had the same issue. It didn't matter which scope I mounted, whether it be a small or large refractor or an SCT or reflector, I found that the 'drag' on the clutch needed to be tightened just a little bit more. Once I had the adjustment to my liking everything worked fine. It's just like everything else...You have to make it just right for you and then all is good with the Universe again.
Porta II bracket
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