I dont know if this is really the right area for this but just thought I would show you what I put together to ensure you have clean fuel and good carby(model 4 & 5), it has a 2 & 4 stroke fuel tanks and the battery for ride on's or cars, and it puts to use that old mower base that you are never going to use otherwise. Dont be too critical as it is just slapped together with a few welds , roof screws and some cable ties, I invested a whole hour on it.