Interesting... the fact that the RA offset afterwards is almost exactly twice the original value, and almost exactly the same angle, does seem to strongly suggest that the correction guide is telling you to go the wrong way. I can't see how this could possibly have anything to do with your mount, but at the same time, it seems strange that no one else would have encountered this and brought it up already. I've had fairly inconsistent results with trying to do polar alignment corrections myself, but I never seem to get to the point where the star is perfectly centered in the crosshair, mainly due to camera/plate solving issues that show up during the "refresh" phase. Anyway, I think that what you're seeing here certainly merits a closer look, since your results are quite telling and I don't see any reason why you'd be experiencing this and others wouldn't.

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