Use a control horn with the six sided configuration, and hook up the rods to the ones that point at the "10 o'clock 2 o'clock "positions, (assuming it's a high winger). This will pull the "up going" aileron more than it pushes the "down going" aileron". The reason this is done is to stop "adverse yaw" or the swinging of the wing in the oppisite direction, before it settles into a turn.
If all else fails, hook up you rods at the 9 and 3 o'clock positions, and don't much worry for now. You will have equal movement up and down, and you probably won't notice a thing.

Jetts