bought a reman powerhead, it seems they gave me a newer model which is fine. already had an issue with bypass covers, the ones they gave me had no nipples for recirc. valves/primer hoses , my old motor covers wont fit. .they are sending some they say should fit. now I notice that the new motor crankcase cover has 2oil? holes over the center crank bearings that my old motor does not have,is this a problem? I have to use my old intake and it has no holes that match up with these.