Part of me wants to replace the seat but then that would possibly mean a new seat and valve. I think the right thing to do is to grind off the valve stem and see what we end up with after a light lap.\
I wanted to see how another valve would work so I grabbed the intake from Little Briggs #2 which what has a bad exhaust valve guide. But as you can see the 10 ci engine uses a larger valve. Duh!
Need price both and do some more thinking.
Ordered a new valve and seat off ebay for $10.50! Going rate is abou5t $25 each at the parts houses.