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You probably have everything sortted but if you can mount a camera to point the same as your polar axis you can take a time exposure which will show many little star arcs and from them you can get a good idea the direction to adjust.
In fact on my wide field mount that is all I do...and once that was all I did for even longer focal lengths to get very close before a drift alignment.
And the photos of the star circles are rather neat☺.
Alex
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