On my first few flights, the gimbal worked perfectly. Now when I connect the Phantom to the controller, it goes through the self test, but when it finishes, the yaw part of the gimbal doesn't work correctly. Holding the Phantom by hand and turning side to side, the camera now seems to drift back and forth instead of staying pointed straight ahead, like the motor isn't working. The Roll and Pith seem OK. * I have flown for a total of about 40 minutes, and it seemed to work fine until I started it up today. * The only thing I have changed is my FPV device. * The drone has never been crashed. * I did update the firmware last week when I got it. * I did do the auto-calibration on the gimbal. I'm hoping one of you Phantom experts can point me in the right direction.