Guy on Ebay chucked his GM lifters in a 1" drill press and ran them down into a piece of 220 crocus cloth on a bean bag. Said they were recrowned, ready to go! I took some solids out of a slant and they looked like telescope mirrors. I tossed the anemic stocker cam but saved the lifters for a regrind if I ever get over to Costa Mesa R&D. Great machine shop vids from these guys.
