I need help. I own a 01 xr 200 and it has started spilling gas out of the carb. On the bottem of the carb on the back side there is a small line that runs down to the bottom of the bike and stops. Whenever the gas is on, it just pretty much spits gas out of it. It runs fine but just sprays gas everywhere. I cranked it up and turned the gas off and it immediately stopped but the bike continued to run until the remaining gas in the carb ran out. I repeated the process except turned the gas back on before it died and it resumed the spraying. I know nothing about carbs and therefore have no idea what is wrong. Any help will be greatly appreciated.