Carb Problems...

Hi,
I picked up a 1968 Dart last fall. The engine starts and idles fine. But, when I shift the automatic transmission from park to drive or reverse the engine will stall. I have to keep one foot on the brake and give it gas with the other foot to keep it running. Once I start driving the car and it warms up it seems fine. Do you guys think there is something wrong with the carburetor or does it just need to be adjusted? It is a Carter 4612S carburetor. A few of my friends said I should just get rid of that Carter because there pieces of junk. Any advice like how to adjust it and what the ideal speed should be would be great. I am used to the one a two barrel carbs on my W300 Dodge trucks. This carb has more linkage then I know what to do with. Feel free to check out a few pictures of the car at the link below. Thanks in advance for the help.
Chris

http://imageevent.com/dodgemain/1968dodgedart