Street Demon tuning experience

Nuke,
Spot on!
I tried to warn people about these carbs.....
The problem can be spelt in 6 letters: Holley.
One fitted to a 400 Pontiac bogged & phone calls to H tech from Australia did not fix it. The factory QJ fixed it.
It is cheaply made & poorly designed. Keeping the air valve dashpot that the TQ had might have fixed some of the bogging. There is a risk of dropping a circlip into the t/bore when changing met rods. Et al.