Hi, any advice please? Have finally got the Zetec blacktop 2litre in and running. Having hopefully sorted major oil leaks from sump gasket there's still a drip at the rear. Read somewhere that poor crankcase breathing could cause it. True or false? I discarded the big ugly breather under the exhaust manifold and blanked it off, using a small breather filter on the camshaft cover near inlet manifold. Is this sufficient? Many thanks.