my buicks v6 2 bbl wont idle. it revs up when i start it from the choke but then unless i have my foot on the gas, it stalls. so far all i could come up with is that the carb might need rebuilt, or there could be vacuum leaks, which is a definately a possibility, but they shouldnt cause it to stall; just idle rough. any other ideas? are there any aftermarket carbs that'll fit my intake by either holley or edelbrock, if not, that ok, my dualjet will work, but itll need rebuilt.