Hi my 2003 Mazda Protege5 broke a cam bolt and a camshaft pulley pin because the cam follower shim slipped off the cam follower itself and then jammed into the side of the cylinder head. Now I need a shim because it shattered. I have the small pieces of it. Where do I buy a shim? On the sites they don't specify what the thickness of the shims are, I have got to assume that it is only one thickness? Need help!