Hey guys, I need help with a EZGO 4 cycle cart! What is causing gas to build up behind my Air Filter. New rebuilt motor. Only starts when I pull the choke. Then it takes some finessing with the choke to keep it running. Once in a while she cleans out and runs awesome, but most of the time it bogs down and throws blue smoke. How do I diagnose and fix? Thanks in advance for the help. DDT