so, I'm building a bike for my brother, bought it as a basket case. I've gotten about halfway there, and now all this trouble wit the carbs. I've cleaned and rebuilt them twice now, but they still are a problem. I have a funnel on the fuel line, and the airbox out right now, the vac hose open, and I can get it started with quickstart, with full throtttle response, but I can barely keep it running with the throttle full open after the eather burns off, almost an idle, I spilled a bit of fuel in the back carb intakes, and it again had complete response, until it ran out. it is burning some gas, but it seems like it's not getting enough. Does anyone have ant ideas? thanks!