If your cameras off, not level  and twitches try this, (look on youtube for a gimbal video to fix it, there's some on it.) easy! Sounds like camera motor shaft to circuit board sensor pot are no longer level together. Remove camera motor gimbal cover 4 small screws then look when you hold camera level that the shaft in pot is level with camera, if not carefully with pliers hold shaft level and hold and turn camera level to match, you can carefully lift off circuit board to do this if you need to. Video's show how well. but if camera turns to easy on shaft then you will have to pull motor off and try loctite on shaft and re-level it,  as it's just pressed onto shaft, a far to common problem with gimbals hard landings. hope this fix's your problem OK ,if it's off should fix it.

This is my problem:


I tried the fix above and one in comments for my video and still have the problem. Does anybody has other ideas?

Thanks in advance