Picture of 340/360 head porting....Mistakes?

Cudafever said
Still trying to grasp the lay back concept.
You say cut straight up from the 65...... So your talking a vertical wall straight up to the seat aka 45, of the common or straight wall.
So to say it differently, if it was being done by a cutter, the common wall would go 45 seat,90 wall, then 75 bottom cut?.......or maybe eliminating the 75 all together

Or when you say go more straight up your meaning from the port window side of the ssr at the common wall and more straight out, not curved up to (or down depending how your looking at it) into ssr in the bowl.

In your upside down pic, the right side of the short turn, get steeper then lightly lay it back and then go from the port window and lower and descend just a tad to meet the short side work mentioned . You wan to have a mildly descending ramp to the short turn. We are essentially evening up the distance and pressure on each side of the turn as we go for more air flow