A very handy thing to know about raising or lowering the ailerons together is that lowering them has the effect of increasing the angle of attack of the wing and raising them has the effect of decreasing the angle of attack. This is super handy in trimming out models for proper flight and especially handy in getting biplanes to fly well.

You can get a model to fly level at the desied thottle setting with the elevator, but it may squat. Lowering the ailerons a turn or two on the clevises (clevii?) could then get it back to flying with a nice horizontal center axis and reducing the overall drag.