I use the DX7 for dual aileron servos and dual elevator servos. The elevator servo requries a reversing Y cable and works just fine. I've been trying to find a link for the Y cable but could I have not been able to find it yet. I believe I bought it from Tower but I can't be sure. It was a year or so ago that I bought the thing. I use the AR7000 receiver for this aircraft. However, I was under the impression that the TX set up the mix not the receiver.

CGr.