Hi. I just got a1999 whizzer. After a bit of tinkering I finally got it to start. At first it would not start. I found that I had spark everything else seemed OK so I clean the carburetor. Put the carb back on and it fired right up. The only problem I have now is that it will not run unless the choke is on. Does anybody have any advice for me to keep the bike running without the choke on? I can keep it idling just fine but the choke has to be on. As soon as I try to turn the choke off it will die.