If this is the WildHawk FMS model I created, then I mapped the rudder control surface to the aileron channel within the .par file.

Many modelers map the rudder or aileron to the aileron channel for 3 channel airplanes to keep the primary turning control on the right stick.

So whether A/E/T or R/E/T, turning is on the right stick.

The controller is calibrated and assigned in FMS for 4 channel models and the .par file controls the individual model.

Gary