I've been having problems with my p4 for a while now. My gimbal started by "bouncing" during flight and sending me gimbal motor overloaded warnings. I did some research and decided to replace the yaw arm (because it was bent), the roll motor, and the gimbal ribbon cable. I did so and have seen little improvement. The difference is that now I can calibrate the gimbal. The problem, however, is that the camera tilts slightly after calibration and gets stuck almost completely on its side when the drone is tilted. When this happens you can also hear what sounds like a scraping sound within the motor casing. Any suggestions or ideas of what wrong?