I just ran my ailerons into a Y and hooked to the opposite side of the control horn, no need to have dual channels on that. As far as the Elevator, I went to my LHS and bought a little mixing pot connector that has an adjustment on it to even the elevator sides out. THat way there is no programming needed, U-Can-Do the programming if you prefer, but the dual servo elevator pot is only 8 bucks, works very well.

Tom