I just finished building a DJI F450 with APM 2.6. All the calibrations went fine until i got to the radio calibration. It shows no stick movement like the rx isn't sending signal to the APM? I checked and double checked the connections, I even took the rx out and put it in my plane seemed to work fine. Also a link to the rx to apm channel connections would be helpful. I hope someone else has had the problem and fixed it.