Make sure your throttle isn't set too opened at idle. If you use the throttle stop to adjust the idle you can position the the throttle valve past the transition point & not get the enrichment as you come off idle.
Assuming the carb overhaul left all the passages inside it clean and clear, suggest you check the following:
-- check for any vacuum leaks
-- timing (use a light, not by "ear")
-- vacuum advance diaphragm
-- accelerator pump shot
-- float level
Kind of in that order, since you no doubt replaced the accelerator pump on the carb overhaul....
It's usually something pretty simple that doesn't require teardown of components (as you discovered with the carb overhaul). Was it doing it before the carb work? Did it come on all of a sudden, or over a period of time?