I was flying a mission with Litchi last weekend. It started to get bright, so I installed a polarpro ND filter. The camera was waving violently in the air. I thought it may have been too windy for the added weight of the ND filter. So I put everything away to fly another day. Went to fly yesterday, and same issue, but with stock UV filter. Now my P4P gimbal doesn't move at all during calibration. Using the wheel it moves just fine. But during flight it's all over the place. Can't take sharp photos or usable video. Keep getting a Gimbal motor overload error, even after the calibration is complete.