I put in a 98 gt motor into my 96 gt, The problem I'm having is the serpentine belt on the upper idler pulley looks like it wants to slide foward while running,its rubbing the protective stop on the lower idler pully,Well after looking at belt line on the accessories the A/C seems to be about 1/2 inch to far foward is it possable to slide th A/C back to line up with the rest of the accesories or is their somethine else???/?