e90 tilt

Hi all, does any of you have such problem - mine e90 camera even after gimbal calibration is distorted. I am thinking about sending my H520 E90 to service but this will be my last move. I hope it can be solved by myself. Above I attach samples pictures: When I do a full calibration (acc...

Just wondering if anyone has seen this issue with the E90. After a few minutes in flight the gimbal begins to tilt almost as if it is trying to do a calibration. It doesn't happen on every flight but continues to happen. @Bob520, have any ideas?