Excessive (isolated) 273 Adjustable Rocker Arm Tip Wear: Diagnosis & Repair?

dibbons said

I can't find the factory hole, if it ever was there in the first place. I don't see any sign/evidence of an oil hole for that location on the inside (shaft) side of the rocker either. Not convinced it was a factory quality control issue yet, but it may have been.

Maybe if I treat it with some "Rogaine" first, it will come out of hiding (lol).

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I don't like that wear on the top side of the bore for that rocker arm, either. There should be no wear on it, because there should be no pressure(load) in that area. I'd be looking at the shafts and maybe the bores of all the rockers, very closely. Maybe someone at some point had the shafts installed upside down.
you need not throw that rocker arm away, it can be fixed and bushed.