Best valve cover gaskets?

They also make special washers that spread out along the valve cover and apply pressure over a larger area
[ame="http://www.amazon.com/Mr-Gasket-6396-Valve-Cover/dp/B000BWE4IG"]http://www.amazon.com/Mr-Gasket-6396-Valve-Cover/dp/B000BWE4IG[/ame]