ORIGINAL: All Day Dan
Use 30% on the ailerons and elevators. If you use a ''Y'' connector for them you will get the same expo on each surface. If you are using different channels for each one it may be dependent on your radio. Dan.
Sorry, but computer radios put expo on the function, not the individual servo.
If there's any radios that are otherwise, please let me know which, because in my somewhat admittedly limited experience, I've yet to have seen one.