SM Head Modifications on a budget

pittsburghracer said
I would sure like to see a nice close up of the chamber around the intake valve. Don’t be cheap with the pictures. I can’t imagine a ridge in the chamber that is so bad it couldn’t be addressed with a 3/8 sanding roll. I really don’t like his choice of tooling

Here's the pictures. There are no ridges in the chamber, other than that created by the plunge cut. A little chatter, but no ridges.