Hi there,   I flew ardupilot for return to home in order to compare its performances with a "homemade" solution.   I had GPS lock before take off (I use Ublox GPS).   I tunned it so it does STABILIZATION very well. However when I engage return to home, the plane just flies away, at most oscillating around pitch axis. It doesn't have ANY tendency to bank on right or left in order to return to home…