Well I did a 2 step fix. I was leaking in #2 so it was easy. I pulled valve cover and had some silicone on the tube seals. I kept looking at it for about a week, NO leak. Good to go. Today I did a Spark plug change for all 6. I did a reseal for the tubes as well even if it was not leaking on the back(under plenum) valve cover just to be sure. Did the Plugs with a cooler temp plugs to eliminate the Ping I had.
All is well now no ping and no leaks. New Plugs, New Valve cover gaskets left and right bank, all 6 tube seals resealed 
