I'm am compleatly stumped, I had my carb cleaned and rebuilt, and when the gas line is attached, the fuel does not flow at all. when i pull the line off it flows all over the place. The fuel line does not even fill, i can see the same air bubbles in there all the time. This is a 77 Motobeacane, and i've checked the filter and the float all seem good. but the gas does not make it out of the float bowl into the jet. The moped only runs if i spray gas directly into the throttle slide. Please help, is there a adjustment i'm missing?