I took this out and rode it and got 12 miles to the gallon. Then on the way home I stopped at the dealer and had them run the VIN. They said the updates were not current. So I left it there and called them a few days later and they said the updates were done just not updated in the BRP system. They adjusted the oil cable and said the rave cable wasn't routed right and one valve wasn't opening all the way. They fixed that too. No charge. The next time I rode it with a friend who has the same machine the engine started rattling and I ran out of gas at 52 miles. It sounds like that inherent rattle on a two stroke dirt bike. I couldn't see where any gas was leaking and I couldn't smell any either. Is this 'RATTLING" anything to be concerned about? What would cause this kind of fuel consumption?