My timing belt broke and I have to replace valves this is being done by an expert. When I replace the cylinder head I want to make sure of my timing marks. There are two marks on the camshaft sprocket one is a v slot the other is a small lug much the same as the one on the rocker cover. The crankshaft oil seal housing has an arrow on the right of the plate I presume this is the crankshaft timing mark. Anybody out there help a new member.