Well, that would be like putting a screw in the slot on a holley vacuum secondary to make it open mechanically. You'd get a massive bog because of no accelerator pump on the secondary's
Huh? There is no pump on the secondary of a Carter when those open either, nor a Holley VS. Its just a suggestion from an old Hot Rod article that I can't find at the moment. Perhaps it was set up as a progressive linkage.
