This again.... 4bbl on a 318 with a 2bbl

yeah, been dealing with carbs for over 40 years. I have 5 cars now that are carbureted. Never seen one come with a tube of epoxy. I'm just saying there is a flaw, as you pointed out, and it's ok to call them out. I like edelbrock, but something has slipped in recent years. It's called quality. And if a new 650 cfm from any carb manufacturer needs disassembled and epoxy to work on a 360 cubic inch then i'll say there is a flaw/quality issue.
There are whole books devoted to modifying Holleys, this is not an issue confined to one brand.

https://www.amazon.com/Vizards-Modify-Holley-Carburetors-Performance/dp/1934709654?tag=fabo03-20