What type of fuel pressure regulator/guage do you have ? A quality unit or generic knock off like the ones summit, jegs, etc. sell that are not very accurate. What is the history of your carb? bought new,used or rebuilt? If pressure is accurate would almost have to be debris blocking needle & seat like camd64 stated. Had your same problem on a 800cfm eddy and turned out to be inaccurate summit pressure guage which was reading 6psi and turned out to actually be 9.5 when finally traced problem.
Oldschoolcuda
