Need help with valve covers leaking

Those 60 dollar valve cover gaskets will last forever. They are reusable. They do not leak. End of problem. Forever. Forever. Isn't forever worth 60 bucks? Even my cheap *** has to say yes.
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unless # 2 header tube is right against the valve cover! "big block, raised port, TTI 2" headers" , have burnt up evert type I`ve tried. Rob, your working in a parts store aren`t u ? if so, does anyone make an asbestos type valve cover gasket for a 440 ?? I don`t have room to shim the header out. thinking, pulling it of and eggshaping the tube might be the only way, dang it !