How long since the engine has had a valve job? If you've got sticky valves, it's most likely problems with the guides, not the rocker arms. Unless I'm missing something here, it sounds like it's time to pull the head and fix things right, instead of doing a bunch of Band-Aid patches.
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!
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