Cylinder head dyno shoot out

I’ve had a few heads where unshrouding the intake valve created some high lift flow problems.

For me, it seems like if the high lift flow stability is iffy, moving the chamber wall away from the valve hasn’t shown to improve that.
When Valley performance did my motor( it had Eddie heads then) he insisted on unshrouding the intakes. He knew my cam( one I still use) was only 565 gross lift. He said the heads were done after 550 lift. So it worked In my favor for what I had going on at the time.
He said what he did would definitely show up on the time slip