318 Heads: bad valve job?

CP - you were goin' good.
"I don't know any professional head guy that will use a Serdi (or Rottler) to cut seats, especially the big stuff, most of the guys I know use a vertical mill instead as its much more rigid and produces results easier. "
I have no idea why you'd say that unless you're confused or not near any professional shops. The shop I use has a Serdi 104 seat and guide machine, a Serdi VVR120 valve resurfacer (If you think Ferrea valves are good you should see them after this machine fixes them), and has a Rottler F86A machining center for block work. You can do heads on a vertical mill if you're good with it (Bridgeport, my TCM, etc) but they suck for production work and cannot do the smaller 4-valve stuff and they certainly can't equal the quality.