There ain’t a scratch in them. You can feel the difference when you put the ifp in. Nice and snug then loosens up 1/4 the way in. Feels like they got 300k miles on them. I’ll have to throw my bore gauge on them and take pics when I change them with Ryan’s resi’s. Maybe they need “hone marks”?
Flip that bitch around and use the other 1/4 inch?