Bringing Bug back to life

I just bought a 70 Baja bug that has been sitting in the previous owners
garage for about 2 years. He said it ran great when he stopped driving it. I
put in a new battery, changed the oil and put two gallons of fresh gas in
the tank since he didn't know how much it had in it. (Gas gauge is
supposedly inaccurate under 1/4 tank) I also added some gas line dryer
(Heet) in case there is any water in the gas. It fired up after priming the
carb and after a few restarts to fill the gas line it idles OK. The oil
light went out and stays out while it is running. (Don't have the tools to
check oil pressure) The problem comes when I try to give it any gas. It just
dies unless I pump the pedal and it wont stay running if I stop. I am
thinking the carb may be clogged up and need a rebuild. The carb is a Weber
progressive.Am I on the right track here? Is there anything else I should be
checking? The car is still in the previous owners garage and he says I can
keep it there a few days to get it running but it sure would be nice to get
it running well enough to get it home. (About 5 blocks) I may have to break
down and have it towed but I would still have the problem.