Edelbrock 600 carb issue?

Take the booster venturies out of the primaries and clean them.......I have had very similar problems with almost new carbs that have set for a while, and have been plugged by dirt and such in the air bleeds, and different places. Clean the carb, and it runs good as new. If there is any dirt in the transition circuit or air bleeds the carb will definitely not run right. Especially if the lean spot/hesitation is right off idle and adding to the pump shot does not help.