I have an Air 2 with a rather unusual fault. The gimble calibrates and goes from all corners but once its finished, It's like the gimble doesn't have any control. The controller states gimble stuck error 40002 but won't calibrate and just sits there. The gimble is free from all dirt and never crashed. You can lift the drone up and the gimble will move around freely and not sit perfectly facing forward/level like it does when switched off.