Hey brickman- didn't you get a booklet with your carb. when you bought it? There should have been one in the box- it tells you how to adjust it. I found mine to be most helpful, it has things in there explaining just how each circuit works, and how to get the max performance.
I was trying to adjust it like a Holley- didn't work- then I read the book (go figgure) and with the proper tools made it sing. Only had to set it up once and it ran great for two years.
Once you get it set to the book spec.'s - then you can tell if your stutter is carb. or elsewhere.
Good-Luck......