I am rebuilding a XR100 Carb off a 97 model. It was pretty badly gummed, but with some carb cleaner, some elbow grease, a push pin and a toothbrush I got it all cleaned up. Now for reinstall. I have a question. There are three rubber hoses and I forget where one of them goes. The big one is the fuel line from the tank. I think the small one on the bottom is a drain that runs down behind the motor. There is a third nipple, but I don't know where it goes. Please help!