Carter carb tuning help

A couple of quick things that come to mind....is the choke coming off completely? You will see there is a secondary lockout tang in play when the choke is on,even a little bit. This will lockout the secondaries,so the carb will on be on 2 barrels ,even at full throttle. Check your accel.pump...make sure you are getting a full,steady shot out of the squirters. Its not carb,but,check your vacuum advance to make sure you're getting it all.

Just my thoughts...Hope it helps...