I'm not able to calibrate my Radio using QGC, in my Pixhawk(roll and throttle not moving). I tried to install all the versions like ardurover, copter etc, but none of them are working. But when I installed PX4, it was working. Then I tried with APMPlanner, then there it is functioning properly. After calibrating in the APMPlanner, if i connect with QGC, throttle and roll will again stop working. I'm not able to understand what the problem is. Any help?