I´ve put a pixhavk on my rc plane, but somehow the servos move in wrong directions, when the plane is in eg. Stabilize or RTL mode. So when the nose is pointed up, it wants to tilt even more into the sky. The same with roll. Instead of working against the roll, it makes it even worse.
Would be nice to get a feedback, cause i don´t know what to do.
Are you using ArduPlane or PX4? If it is ArduPlane I would ask in discuss.ardupilot.org.