CNC Mill Mark Removal in Intake Port

I’ve been blessed with customers that leave the port finish up to me. Exhaust ports get a sanding roll finish. The intake ports get a burr finish. Not a bent burr finish but a common everyday burr finish. I’ve seen some beautifully finished ports and they look great in pictures and probably get the head porter some business but to me that’s oldschool thinking. A good head porter can gain flow on any cnc’d head but it’s from material removal not just buffing a ribbed finish. As far as the large throat size I’ve never seen it what I considered oversized on the non cnc’d Speedmaster heads but it’s at max size in my eyes. If I get 290 cfm out of a 2.02 valve I’m satisfied because these heads beg for a 2.055 valve size so the head porter can do the needed valve seat work.