I bought a biplane from a guy at the fly field a couple of years ago. I stripped all the old covering and sanded everything down. I had to completely rebuild the ailerons because they were in bad shape. I am in the process of pre-fitting all the control horns and radio equipment before I start to cover. I have come across a problem. I bought standard control horns for the ailerons, cut them down and attached a 2-56 pushrod to each control horn on the ailerons. I adjusted the ailerons to be equal when in neutral position. When the aileron surfaces are up, they move the same distance. When I move the ailerons down, the top aileron travels more than the bottom. This is the case for both sides of the wing. I know I probably mounted the control horns wrong, but I don't know what to do to fix it. I hope it is a simple fix. Please post some pics that would help describe the solution. Here are some of the biplane pics: