Oil filter mount?

The plate goes on first and is held in place by the fitting. You should get the gaskets in your rebuild kit. There is a large paper one that seals the outside of the plate to the block. And a small one (cork) that goes between the plate and the block . I think there is a third gasket (a thin paper one) that goes between the fitting and the plate. My mind is on vacation tonight and I hope I'm not telling you wrong. While you have the plate off go ahead and drill another oil hole in between the other four holes.