Bigger squirters and longer accel pump cam.

You say bigger sqirters, just how much bigger???
Its got 31's on both the front and rear.

i would start with 35, and go up or down from there.

One other thing to think about when you are footbraking a car is how far down into the pump shot you are before you take off. It will lessen the amount of shot you get, sometimes you have to change to a different shape pump cam to get a longer shot or one more toward the end.

Curtis

x2 Use a brown acc pump cam in position #1 or a pink acc cam in position #2. Either will continue to squirt for about 35 degrees of throttle opening.

Dave

I have the same carb that had the same problem.I tried most of the things mentioned so far.Also tried 50 cc pumps.If anything it got worse.I took the mettering blocks off,driled the pre set emulsion bleed holes(8 holes each block)to .033 then put idle feed restricker jets in all the holes. .031-.031-.028-.028 top to bottom.60 ft time went from 1.5s to 1.3s.You should see the rubber on my garage floor,when I was done I could pick the wheels up before sliding out the door.Might be something to think about if the other things mentioned don't fix it.Bill.