Hi, the relationship in height between the clutch surface on the flywheel and the posts on the backing plate?? is there any?? or is it to do with where the pressure plate rests on the centre of the flywheel?? Im just wondering this as iv found a flywheel, lightned it and the same with a backing plate (not a matched pair). So is the any checks to do to ensure proper clutch operation before installing it all?? Thanks all, cheers....