Having an odd issue with my 73 Duster

This last weekend I noticed my carter 2 bbl carb was leaking fuel through the gaskets and I had a spare rebuild kit when I worked on the original. Anyways so I took it out and cleaned it make sure everything was good, floats, needle and everything was good so I dropped it back it plugged everything back in and now she won't idle at low rpms. she will run perfect when its in the high rpm mode, when first starting but as soon as I press the gas to get it off, immediately dies. I took the carb off 3 more times and double checked everything and I can't figure out what is going on. Any help would be great.

By the way she's a 318 and basically stock