I use 3M trim cement to stick the gasket to the head, and a thin layer of general purpose grease on top to make sure the gasket doesn't stick to the valve cover. It's usually good for 2-3 valve adjustments that way before it needs replacing again.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!