EPA can be your best and worst friend. I usually set the max travel to equal the max deflection possible, then turn the other side down a touch, but in most cases I just make up and down equal on the elevator, the alerions are the same on a low or mid wing. On a high wing, differential is almost a must for axial rolls. Rudder on my planes are as much as you can get, I can always detune it on expo to suit my takeoff sensitivity. I have the plane covered, but no trim checkers on it, nor do I have the rudder, elevators and alerions, between work and the boat, I'm swamped, but hopefully, the next few days I have to work at foxwoods, so I'm about 20 minutes from home, not 1 & 1/2 hrs.