Question on the building of these engines,,,what kind of results are people seeing, re-using the original gaskets? I am referring to the water pump, valve cover, spark plug tube to valve cover, timing cover, etc...the o-ring style gaskets. Rumor has it, that they are designed to be re-used. I thought if in good shape, they would probably be OK,with possibly some sealer. What have others found out?? THX