SM Head Modifications on a budget

Earlie A said
Sort of the same thing happens when the PRP is opened without changing the SS. It exposes the other problems. The factory sizes the PRP the way they do for a reason.

I watched a Youtube video with Curtis Boggs and Jeff Hammond. Curtis talked a bit about monitoring pressure differentials (pressure drops) in different parts of the port to help really figure out what's going on with these low port heads. I think that would apply here.
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The pinch should really not hurt a port like this...even if it's a bit large. I really think it's the valve job/chamber hurting things. Still fun to see what the changes you make do. What's really fun is when you unlock or find what the port really likes. Then it's like magic and makes you feel all warm and fuzzy!