Bought a used P3A with a known issue.. It's been down once, but no visible or functional gimbal damage aside from the fact that it confidently powers on with the gimbal tilted to the right by about 40 degrees. It will function, stabilize, and pitch just fine, but holds that horizon angle. I can run the gimbal auto-calibration and after about 15 seconds, the camera rotates left/right 3 times and then calibrates to level horizon and continues stabilizing and functioning just fine. Thoughts? Thanks very much in advanced.