OK, then it is most likely a carb issue. Let's start with the simple stuff first.
Are the carbs properly seated in the boots?
Have you drained & removed the bowls to have a look? Any dirt or grit inside the bowls? Do the main jets look gunked?
I have not done any of this. And honestly don't know how. Is there a step by step process? I was looking for dinqua's carb stuff on the Tech Vault, but I can't find it.