When setting the ailerons I like to put the plane in knife edge flight and see if it pulls towards the belly or canopy. But I flew a guys Extreme 330 the other day at our field and he had the flaps on a dial so I continued to dial in reflex until the plane tracked straight in knife edge. When I landed the plane and looked at the ailerons I couldnt believe how much reflex was in there...........way too much. Im not sure what was wrong with his plane but it definately didnt trim out like my Sledge did. With my Sledge I can raise or lower one aileron only a few clicks them retrim for level flight and it makes a huge difference im knife edge......go figure.