I'm blaming lack of sleep for this. Not my first time cleaning my carbs on my motor, but after I put all the carbs back on, I can't seem to remember how the gas lines on my top carb go. There are 2 ports on the top carb. When standing on the port side of the motor looking at the carbs, there is one towards the back of the motor that has 2 ports, (one receives gas and sends it somewhere), and one towards the front of the motor that just sends it somewhere else. Is it the one on the left (front) that send it to the middle carb?
You can still swing by if it don't help, I don't live to far from you....