Don't have "demon carburetion" but you might call it that

How much fuel pressure do you have and what fuel volume do you have?
Do you have correct timing and vacumn advance working?
That being said,your problem is adjustment in the carb,float,passages and jets,power piston,etc,it needs to be gone over and the right way.Do the mixture screws work correctly,idle goes up and down with the turn of the screws.Mrmopartech