How did you fix your valve cover leak?

I got Indy/IMM LA-X heads with a machined flat valve cover rail and Moroso gaskets!
Well see, the slant 6 has machined valve cover rails. That's why I figured that fancy "REAL" valve cover gasket would work well. Leakinest sumbitch I ever saw. I even sprung for the high dollar fiber reinforced one too and followed the torquing instructions to a tee. Cork seals good, though.