OK this is probably a dumb question but I cannot find where you can calibrate the sticks with a MA2s and a Smart Controller. I did it with the old controller using the DJI Go4 App but I cannot get into the Go4 App thru the Smart Controller. For some reason the first few flights went well and now the controls are going honky! It will not land and the forward stick makes it climb! Something is fishy and I hope the calibration corrects the problem.