hello all!, the other day I set my waypoints and left the altitude at the default setting of 95 ft., well I set 4 waypoints tapped go, well my Phantom2 Vision + was not at 95ft or even close, it was more like 45/50 ft. guess my question is there a way to calibrate my app or phantom? That could be dangerous if I set a waypoint and there were obstacles in the way. I all so flew her manually and she was about 3ft off the ground and the app showed 25 ft. REALLY??? I know there was a topic at some point here but I cannot find it. Any advice would be greatly appreciated. Thank you all!