Quadrajet question

[napa68]

I have a new car I am working on and trying to improve it's cold start / transition performance. The car (71 455 HO Pontiac) will start right away, but it is really rich! The choke and choke pull off is operating just as it should. It will not take any sort of throttle as it gets really rich.

What I did notice is that it appears to have fuel coming out of the primary air bleeds when you try to blip the throttle (and it stumbles). I have not noticed that on any other quadrajets before. Is it a sign of the float being too high? When it's warm, runs great. Plugs look good, and oil does not smell like there is any sort of fuel dilution. Admittedly, I have not checked engine timing. This is a relatively fresh engine build (1500 miles) and about 2 years old.

I am told Cliff Riggles did the carb and built it to the engine specs.

Am I on to something? I just feel it should run much better in cold transition.

Thanks for your consideration,
Tim