Another thing to remember is to get all of the mechanical linkages talked about in post 2 above correct MECHANICALLY correct first do not ue the electroinic "sub trims" in the radio to correct a bad mechanical hook up in the first place. The reason for this that if you ever hook up a buddy box to your plane, say you want a little dual with an instructor, the buddy box does not hold all those sub trims so you may end up with absolutely no way to retrim the plane from the buddy box. Been there done that