A couple reasons why I hate doing port work after others
I spotted this first whoops in my parts cleaner. Someone got overly aggressive on an exhaust port and ground through a header bolt hole. Then on my porting bench I noticed one of the two pushrod holes was leaking. Instead of running the tube just shy of the deck surface they stopped about 3/8 of an inch short. Had to drill that brass tube out and will replace it with a longer piece. Not fun drilling that out by hand when they ground to the tube the length of it. I hate to see what I find when I pick up a grinder and clean up the port and can actually see.
I spotted this first whoops in my parts cleaner. Someone got overly aggressive on an exhaust port and ground through a header bolt hole. Then on my porting bench I noticed one of the two pushrod holes was leaking. Instead of running the tube just shy of the deck surface they stopped about 3/8 of an inch short. Had to drill that brass tube out and will replace it with a longer piece. Not fun drilling that out by hand when they ground to the tube the length of it. I hate to see what I find when I pick up a grinder and clean up the port and can actually see.