Interesting. I did the belt mod last year and I always aim for balance. My guide graph is nothing special, but I'd wondered if that was because I haven't employed any form of PEC and I've been experimenting with drift alignment using the DARV method to speed up my setup. I typically get seeming random movement +/- 1" according to PHD.
I might set a little imbalance in the mount tonight and see if that improves. I often see it pulse east and then pulse west shortly after. Maybe my mount needs an expert tune up
