My bet is that your Polar Alignment is off. It is getting easier to get a pretty exact alignment, from hardware sokutions lije a Polemaster, to Sharcaps excellent new PA tool, which is free. The catch is you need at least a camera of some sort and a laptop to run Sharpcap PA, and Polemaster costs hundreds. Otherwuse, its drift alignment for you, which is time consuming. Or live with your rough alignment.
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