^you have no idea what you are talking about.
flatslides only differ (might i also add only allegedly) in throttle response. The argument between barrel and flatslide is pointless. Even then, I've seen barrel slide carbs rip past 24 flatslide mikunis over and over.
64 on 18mm is pretty sick. so please try to not act so high and mighty with top speed bs unless you have a leg to stand on. Its more than a simple flatslide.