I just finished assembling the top end on my '46 EL.  I took it apart to fix an oil leak from the front cylinder intake spring cover.  I used James gaskits and installed two under the intake and one under the exhaust cover.  I'm still leaking oil from the front intake cover!  I examined the cover for any cracks and could not find any.  I know the cover is secure to the head as I used oversized guides.  Any help would be greatly appreciated.