Has anyone else with the P4 had a difficult time getting the compass to calibrate. I have taken mine out twice thus far and the RT is not letting me fly until I calibrate the compass. Both times I have used 15 to 20 percent of battery life trying to get the thing calibrated. Just wondering. I still do not regret my purchase of the P4 and I still have just as much fun flying my P3a. The wife just gave me the green light on some FPV googles for the P3A so I think I might give the Fat Shark latest offering a shot.