You have it sort of right. The blade is so big, it's like a switch. It's nearly impossible to cover that hole in the fuel curve because a carb just can't react that fast. And sense it also doesn't have a true booster, to make it transition from idle to WOT, is has the be crazy rich on that circuit. It may idle clean, but getting them on a trans brake with a tight converter can be a nightmare. So you end up having to make the idle pig rich to get it to transition. This causes the car to be lazy in 60ft.