My 900GTO 10" Newtonian is on a permanent AP 8" portable pier on three
14?" square stepping stones in vegetable garden with a 365 Telegizmos cover.
I attribute my changing polar alignment to moisture in soil.
If your soil has a high clay content, when dried out it will contract and leave cracks so that soil moves around.
But I'm lucky to be a maintenance man and enjoy minimizing polar alignment and orthogonality error.
Inside my head I have a good wolf and a bad wolf.
I was brought up to feed and nourish the good wolf.
I think everyone has a choice
as long as they realize they have a choice.