After I managed to calibrate X1 properly last night so the tilt of the gimbal worked properly again, I took the Phantom out for a test flight today - Actually it didn't leave the ground as the props wouldn't start as per usual. I noticed that the left stick that controls rudder (that is the rotating motion?) also moved the gimbal slightly on its axis - not the way X1 does tilting the camera up and down, but from side to side. I conclude this is why the props wouldn't start. Back to the PC, recalibration of the RC, recalibration of the Phantom but still the same issue. Help is gratefully received as the update to 3.06 has been a real faff just for the RTH battery feature!