I've seen a lobe get wiped because the owner didn't know how to adjust the valves and the lifter looked new..still had a crown..I would check them all for a crown and if good I wouldn't sweat them one bit...
they guy who started this place used to resurface my lifters all the time and we also used to have him build "special " cams for us many years ago. I believe his son now runs it (?)
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