I bought a set of Mr. Gasket valve cover gaskets.
The D/S valve cover was seeping a little after 3 times being off for valve adjustments.
It's about a 1-2 hour job since I have to remove the brake booster for the valve cover to lift out.
Put it all back on and now the exhaust rockers are rubbing on the inside of the valve cover.
It turns out that the thin type of gaskets they make, aren't good enough for rocker clearance.
I must use cork gaskets is the conclusion. Inside clearances are closer than I apticipated.
The good news is my spark plugs are running alot better than before since I put in the FBO ignition system.
Number 7 is the only one that's darker.