Edelbrock’s New Carb Is The Most High-Tech

I suppose if the 3rd circuit is blocked off out of the box it’s not a bad deal. But everything I’ve seen shows a functioning 3rd circuit. It will be so rich it will never clean up in the middle.
Unless they figured something out by splitting the intermediate bleeds, I just can't put it together in my head how, except there's more air to immulsify the fuel which may make that circuit easier to atomize . I'm probably thinking about it wrong though & please correct me if I'm wrong