Gas flows great all the way down to the carburetor, but there seems to be a flow problem somewhere between the jet and the inlet. The car will run strong for ~30 seconds at a time before it starts to stumble. While stumbling, if I touch the throttle it dies instantly, otherwise it will splutter for about 10 seconds before dying on its own. If I try to restart it immediately, it will pop-pop-pop like it wants to start but it can't quite manage. If I give it some time, it will run for another 30 seconds or so again. This tells me it's sending out more fuel than it's taking in, but like I said it flows great down to the carb. Maybe the ball valve thing isn't opening fully to let fuel in? Might be a fordbarn question but I still haven’t made an account over there. Any thoughts? I will have to tear it down again regardless but I’m not sure what to look for.