That guy has never seen a set of our heads, best of my knowledge, and he has his own methods, again best of my knowledge..........you only ASSUMED as that was my reference.
Generalized statement being made by myself as to where does anyone suspect a cnc cylinder head originates from?
It comes from a master head, that is on/off, on/off, on/off, the flow bench until the cylinder head porter/engine builder is happy with the results, then is laser scanned/digitized, and from there forward, they can spit them off that 5 axis machine.
We have recently seen cnc work that is very poor(plant corn, get corn...)and have resurrected/reworked 5 sets since before Labor Day..........all from the same outfit, and to be VERY CLEAR, from no one that posts on this message board with any frequency.
You came in to the thread, guns blazing, accusing us of wrong doing, without the understanding of my words.
I have been in this industry for 30 years now, standalone brick and mortar business with employees, taught machine shop courses at a local vocational school, completed a 4 year NYS Toomakers Apprenticeship, and before that, working on motorcycles since the late '70's, 80-90 hrs a week, after serving 3 years in the US Army in an Infantry line unit, long before the internet was a wet dream.
I take a MIGHTY DIM VIEW of someone that has the lack of respect to harass us.
An apology is in order at this point.

Scott