[joe_padavano]

Dan,

Hesitation off idle could be a symptom of crud inside the carb or a mis-adjusted float causing a slightly lean condition. It could also be the sign of a mis-adjusted or worn accelerator pump. And, yes, it can also be the sign of something completely unrelated to the carb. Without getting into the carb, you can at least band-aid the problem by tweaking the accelerator pump linkage or lever to increase the stroke of the pump. You need to be careful and do this a little at a time, since raising the pump cup too high up into the well can expose the bottom of the fill slot. I usually bend the pump link to shorten it, thus increasing stroke, but you can also adjust it at the end where it presses on the pump plunger.

Again, this is only a band-aid until you rebuild the carb and adjust it to spec.