hi, I have uploaded a video of my problem on youtube and wondered if anybody can help me fix it, during flying the phantom 2 the gopro will tilt to 1 side, I have no idea why or how to fix it. I can tilt the gopro fine with the scroller on the top left of the controller.

any help would be appreciated, thanks

Check your flex cables.
Or it could be a damaged tilt motor/potentiometer.