We have a 840 Honda that we are still running carbs on. It has always ran great on our carbs until this past saturday at Shelbyville. The problem is it responds good when u first nail the throttle, but about half way down the straight aways it would quit pulling and sounds like it's sputtering. It has always had fuel in the bowls. Could it be flooding to much fuel, I'm leaning towards running out of fuel. I'm going to test the fuel pump tommorrow, should it pump a gallon of fuel in one minute. I also checked the engine for ground issues and it was good, it was 0.1 ohms resistance to the battery ground. Any suggestions would be appreciated.