Today, my 09 EN500C started right off like ususal, I let it warm up, and took off. It seemed sluggish, but ran OK at higher speeds(but I could smell gas when stopped for red lights). Rode about 30 miles, put it in garage, went out later to start it, it was very hard to start, and raw gas runs out the exhaust(with engine running) near the muffler on the left side. Could it be a stuck float? If so, why would it stick while the engine is running? The bike was running great before today. Please help!