I have built a tricopter and I'm trying to use the KK2 mini for controller. I've followed the online setups from various sources but for the life of me I can't get the the rudder motor to move (yaw) in both directions. It only moves to the right. Of course I haven't been able to get the copter off the ground yet. My settings for the rudder function, CH4 is: Throttle, Aileron, Elevator are set to 0. The rudder is at 100 and Offset is 50. On my Spektrum DX9 monitor, the rudder movement shows complete side to side movement left and right.