Intro to a port job

The holder/arbor needs changed if more than .0015 worn inside. Pilots too, the wear stacks up

I'm feeling your pain on that one brother.... My old quik way stuff was just like that. I sold it to a guy buying stuff to take to south america.
I SCORED a full Sioux seat grinder set to replace it.
Cylinder Head Supply ...is often cheaper than Goodson.