I purchased a head set for my 1973 2000 sc and the gasket sent to me is metal both sides with what looks like composite centre. My car according to Wadhams website should be a composite as opposed to all metal. Unfortunately the gasket wont go over a location dowl on the front timing chain area as its too small, anybody know if they have had this problem before or do i have the wrong gasket? The one i removed was composite on both sides.