I have had my engine running a couple times, less than 30 seconds each time. I started it yesterday and fuel started pouring out everywhere. Like it was filling up from the bottom up. My thought was a float stuck. But since it sat for 20 years, and is all original i suspect the carb needs rebuilt. Again. Any thoughts would be appreciated. Also opinions on rebuilding, switching to some injection setup, or newer carb. Would love to learn some options.