BigNed: That makes total sense. I follow what you did and that was the ticket if you ask me. Set both channels "up" EP's to match the lesser of the "up" mechanical limits. Set both channels "down" EP's to match the lesser of the "down" mechanical limits. Good troubleshooting dude.

This is starting to make me wonder if I have my flaperon mixing on channels 1 and 6 setup correctly on one of my planes (6EXA). It's common to use this mixing for ailerons when you have twin servos and don't want to use a "Y" cord. After reading this thread I will go back and see if my control throws are linear and equal.

Joe