Come on Edelbrock. Get your act together.
That's pretty shaky all right. I'd probably take some off the floor, but not all the way to the line.
Otoh, i got away with this port, on a tm7 that was modified (not by me) for maxwedge heads. The bottom of the valley under each port was also ground for valley pan clearance.
Oops, just read the text again that the thin spot is at the top. My tm7 has some slugs of aluminum welded to the top of each pair of ports. Not pretty..... but they don't leak.