I've had 4 scopes with AN/SC (3 Obsessions) and never had this happen before. GoTos are spot on, but then the image drifts up in the EP fairly rapidly, almost as if it is not tracking on that axis. But the AN reads how much off it is and GoTo puts the image right back in the FoV. Not a big problem when just sight seeing, but I like to sketch and having to keep adjusting the aim to center the image while drawing is a pain. Plus it will be a problem once the pandemic panic is over and I can start outreach star parties again. Any suggestions on what is wrong - and how to correct it will be much appreciated.
