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The only way you will get drift at 45 degrees from either RA or Dec axes is absolutely tragic polar alignment or the Dec axis motor is for some reason being driven.
Assuming the latter, then simply disconnect Dec motor (just unbolt it, but leave the electronics connected ) and observe whether the Dec motor cog is turning and that any drift is no longer present.
If no drift then you'll need to determine the cause of the Dec motor being driven. Gemini does have a Comet tracking feature, which you should be able to reset by going back to default values on everything, and re-entering your user data.
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