Hi all, I have recently bought a 54 plate 1.9 Dispatch, variant BZWJYB, engine DXFP. the rocker cover gasket (I'm guessing the 'lower') was reported as being done in December 2012 however there was a bad oil leak coming from the 'upper' gasket. I ordered both gaskets from eurocarparts, the upper gasket was correct and fits fine but the lower gasket although it is the right size, doesn't fit as there is no groove in the alloy rocker cover for the gasket to fit into! When I removed the cover there was just a bead of silicone sealant! Is it the wrong gasket? Should there be a gasket or is silicone instant gasket enough?