Delta0Hat

on a star adventurer pro 2i Hi guys, first post but I've read several. I'm having a weird issue where the mount will stop tracking in app mode but if I switch to the same setting on the dial as I was using in app, it works fine. ( IE if I'm shooting sidereal in app mode and it stops tracking I can switch the dial from app the the star and it starts tracking fine) but if I go back to app it stays not working until the next time I set up. my first thoughts were the clutch was getting loose or the balance was off by to much for the mount to handle it but it working correctly in other modes should rule this out. any ideas?