I received my new Phantom Vision 2 Plus today and after everything checked out I went for a first run. After about a meter off the ground the Phantom starting banking left and climbing, releasing the control had no effect, and trying to head in the opposite direction just slowed it heading left and it continued until it hit a tree. First question has anyone else seen this? Searching around suggests not. Second question after the crash the camera/gimbal is no longer level. it seems to operate ok, just slight off level. is there a way to calibrate this?