It might be possible there is a calibration bug. I think in particular with GullGutz, it may be emphasized by his low framerate.
I only point to this as I have also lost full control and function upon takeoff. Usually, if I move the throttle full and off couple of times all is well. I also, recall he kept augering from loss of control before I suggested that he recalibrate, after that he took off and flew regularly.