[rokndad]

Sounds like a float issue. Do a search on Holley floats and you will see many, many threads about the stalling issue with floats. You'll learn all about "whistles" and sight glasses and other things you can try. Your float may be stuck, the needle stuck or various other things. I could never get my Holley to not want to stumble on a hard decel. So I went with Webers!! Best of luck.