My Phantom 4 Pro was always drifting to the left. After IMU and compass calibration it didn't seem that was the problem. In the simulation with DJI assistant 2 I had the problem too, so I expected it was a problem with the RC. So after RC-calibration the problem was gone, for 10 seconds… With e new RC-calibration I saw that when the sticks were centered the stick to roll left gives 8-30% to the left. Afther calibration that's gone for a short period, but If you move the sticks for a few seconds, the problem is back (not 0% when sticks are centerd). Is it possible to solve the problem by myself or not an option? And if not, what is the fastest solution? Thanks for the response in advance.