and to me that is the difference between a CNC port job from a dedicated porting shop as opposed to the aftermarket head CNC work, the dedicated shop is more likely to insure that the job is as good as they can do as opposed to XYZ head company that mass produces them by the hundreds and sell the claim that their heads are CNC ported, yep they sure are looks like someone ported them with ball nosed end mill at 500% feed rate.