I only have one port on the receiver for ailerons (if that is what you are referring too). Basically the setup I have at the moment is where I have the Y-lead/harness connected too my receiver. I need too take off my wings for transportation. So when I get too the field I slip on the wings and just connect the lead coming from the servo on the Y-lead/harness.

Is it the servo reverser which makes that the servos operate correctly when using that lead? Like I said the reason I'm asking this is because - when I use the "reverser one" the ailerons work as they should, but when I use the one which the want me too use both ailerons either go down or up.