HI...two questions: I will be installing a new valve cover on my 235 should I use washers under the ss stove bolts and should I fill the threaded holes with RTV high temp?......Second question: what gasket compund do you suggest. I have always used Permtex and applied it on just a few spots on the cover to hold the gasket in place its a Fel-pro cork gasket is there a better way that I'm missing? THANKS, Steve