Here is another idea for the airleron servos. I have have this set up in my 40% Pitts and it is beautiful with no exposed wires. Install the top wing servos and instead of running the leads to the inside of the wing, cut a hole where the interplane strut is and run the lead down the inside of the strut, install a standard y connector in the bottom wing. Plug both servos into the Y and have the one lead coming out of the bottom wing center. From there you can use a Y splitter and use one channel for airlerons or mix them in on two channels. Very clean, with no exposed wires. People will wonder how you did it.