For what you are saying for the problem of the airerons can lead to one main thing.The servo horns that are conected to the servo are not at a 90 degree angle.What will help is to take off the control rod off , un-screw the screww that is holding the servo horn and remove the horn and then re-attach it as 90 degree as you can. The put the screww back in.This makes sure that both servo's for your airerons have full throw, because it sounded like one was doing the job but the other was ether to far forward or backward.Now take the rod and reconect it back to the servo hord and make sure that the aileron is level with the rest of the plane.If not keep twisting the conter till you get it level with the rest of the wing