I bet you could improve on most hand port jobs like that as well.

I think a lot of people think CNC heads are desighned on a computer, they are not (normally). They are a digital copy of someones hand port job, it will only be as good as the original hand ported head. I think a lot of CNC programs are too conservative to keep from cracking and such and speed up the process and keep people from sticking too much head on their engines sort of like how people put too big of a cam in most home built engines.

If some one made a real awesome port and had it digitized you could make CNC copys just as good. Most CNC heads just don't have that awesome of a port to copy.