One post suggests downloading trainers from the Knife Edge site and I would add finding the HZ Champ there to download. I put this on my RF5 and mappedthe controller to be the same the one as provided by HZ. I mapped channel 1 as "Channel 4 Yaw" (rudder) and mapped channel 4 as a "Channel 9". I just put something on the channel 4 (left stick -side movement) so it had no effect on control.

The plane flew exactly as it would using the right stick to control up/down and side to side rudder - just like the HZ Champ's controller. It really helped both my grandson and myself learn to fly the Champ. I have also become a huge fan of the HZ Champ as a starter plane.

Good luck. For the aileron training you can't beat the Nexstar trainers on RF.

Roger