Trickflow 240 clean up

Hey everyone. I have been wondering what gains would be achieved by grinding down the cnc router marks left behind from trick flows porting. My best guess is there's some gains there, proffesional porters leave a smooth finish of 60-80 & smoother in the chambers & exhaust port. I'm not a proffesional porter by any means but can & will do it if it's a good enough pay off. Any thoughts or experience would be greatly appreciated. Thanks