Help me get the off-idle stumble out of my QF 750-AN Double Pumper

If anything, I've read that annular boosters should improve low end response and fuel signal. Other than during the clutch pop/getting it rolling, it works fantastic everywhere else.

I have a friend who has a car set up which is close... 340 with [email protected] cam/4-speed/3.23's and a 750 DP and his works without this issue.