Had a rocker stud pull and I’m going to get my heads machined for screw in studs. Pulled the heads and thought the cylinders were shined up more than I thought they should. It’s a mild 327, fully rebuilt 2500 miles ago. Is this normal wear? The diesels I work on for a living would still have like new cross hatch after 2-3000 hours. But I’m not experienced with older gas engines, I just expected it to look new still. It’s hard to get a good picture so hopefully good enough .