Got a carb issue. When I turn the gas valve on, after about 10 seconds, gas leaks out the drain line at the bottom of the bike. It is the same line that hooks on the bottom of the carb near the bowl and has the brass bolt going into the carb horizontally so you can drain the bowl. I checked that bolt, and it was closed. It appears to function properly. If I open it, it will drain gas out. If I close it, it stops the flow. I tried cleaning the carb, same result. In the cleaning process, I checked the floats, and they don't appear stuck. I didn't have this problem a couple months ago--the last time I rode. It appears to have developed while the bike has been in the garage. Any ideas would be appreciated!