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Reply to "Ticking valves?"

I've looked in books to understand the rocker arm system, and I got an idea, stop me if it's totally crazy. Eeker
I have the rocker arms that apparently started in 1978, with fulcrum and the digit 7 stamped on them. Now, if I find which valve it is, why not grind a little of the bottom of the fulcrum off? That would adjust the preload without dismantling a lot and it would be free.

Could it work?
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