Looks like there is a lil/minor scoring by the intake boost port . Under (but on top with what the way the pic is). Looks like it could use some better port chamfering also.,. Maybe that's what happened? By going by the pics it is hard to tell if the scoring happened before or after the crosshatching ??
Ahh man ,, Some good porting and head work with that cyl and hold on tight !!
Ahh man ,, Some good porting and head work with that cyl and hold on tight !!