RE: DONE with the JR 9303
Ideally, you want adjust the Trim, on each of the 4 Ailerons, Independently, at the Tx? Is this correct?
You do not want to have to make these Trim Adjustments in the servo, using the Programmer or a Matchbox? Is this correct?
If you were to Mate Aileron with Aux2 and Flap with Aux3 and then use Flapperons to mix Ailerons with Flaps, would that work?
I have not tried this. Just asking what happens when you do this.
Aside from Biplanes, large Aerobatic planes have more than one Aileron servo per Aileron half. They would have a similar need to yours.
I know that some radios offer 4 Aileron programs.