I'm out of my league, talking about carbs. But I remember CarbKing mentioning something about a fuel valve (?) in rebuild kits. Frequently the kits are sized for other applications of the same carb, such as a 300 c.i.d. Ford engine instead of a 235 c.i.d. Chevy. There is no way you can "adjust out" this feature of the kit. You have to have a kit that really is built for the carb that you have on the bench, not a similar one because the kit suppliers have a different definition of "similar".
I'm sure a search under CarbKing's posts will turn up the thread. As I recall, it was related to a Carter YF/Rochester B topic.
Bill