RE: Quick Novus CP question, hope someone can help
it might be the torque reaction and you don't have enough power to overcome the drag or the gears are slipping, so it looks like it is turning only in one direction. I had similar things when one of the little gears got out of adjustment on me. The tailrotor shaft had slipped a little and it caused the gears to get out of alignment. The gear on the shaft is closer to the end of the shaft, so that the tailrotor sticks out farther.
Of course if you had messed around with the adjustments on the receiver, it might have changed something. Hard to say.