very cool John, glad to see you got some skies.
Keep working on the PA, and also especially with the 10" balance will play havoc with long exposures. Important to make sure and apply a slight east heavy bias on your balance on RA. You may also find it helps in DEC balance to swing the focuser straight down. Make sure that the finder is very secure in it's bracket and all is tight, flexure can be hard to identify and ruin many exposures