Ok this thing is going to drive me up a wall. I have went through both carbs total rebuild, no mods at all, sounds like the reverse limiter kicking in anything 1/4 throttle, idles fine but just chokes out when you hit the throttle hard. I have un hooked the park brake wire, the reverse light and neutral light both work fine, good flow of gas getting to the carb, new gas, full tank. Does help to go about 1/2 or a little better on the choke but still cuts out some. I know it is lean so what to start with is what I need. This started out as a no run unless the choke was on then it was still ruff that is when I rebuilt the carbs they were in good shape nothing plugged no gum after I go done it looked good I did have a a little over flow from one carb so I adj the needle and fixed that the AF screws are about 3.25 out I started at 2.75 and have come out twice .25 both times go a little better but still not what I want.