Rochester B carb

[missallpc]

Is there a better alternative to the Rochester B carb. I had it rebuilt but after the initial cold start in the morning I have trouble restarting it. The manual choke will close fully, but will not open back up in a smooth fashion. I'd like to improve overall performance so I have no problem converting to a 2 bbl if necessary. I checked in at Langdons Stovebolt but he only offers conversion kits for Carter to Weber carbs. Thanks in advance. Paul