Could try checking your backlash settings. Perhaps resetting/zeroing it also if it's been adjusted.
I had to strip my previous goto dob mount down several times(I had different problems though, none like yours) but you probably don't need to do that hopefully.
If you do this link will help you:
https://stargazerslounge.com/topic/1...ob-auto-mount/
This link sounds similar to yours too but not a lot of replies:
https://www.cloudynights.com/topic/5...nance-manuals/