I was running her hard today and noticed when I chopped the thottle and twisted it again she'd miss. I was also getting some stalls in tight corners. Shut her down and after 20 minutes she wouldn't fire. I pulled the plugs, they were moist but had spark. I pulled the fuel line and fuel was flowing. I could get it to fire while holding the throttle wide open but only for a few seconds. I hope it's a dirty carb issue. Also, is fuel suppose to flow when the engine is not turning over?