Nothing so needs reforming as other people's habits - Mark Twain
Tact is the knack of making a point without making an enemy / Where is the wisdom we have lost in knowledge?
I am glad the Flexhone worked on those tool marks but I would be leery of taking out measurable amounts in the throats. Better to send it to somebody who will use a throating reamer or a Sunnen hone machine.
Code Name: JET STREAM