Does anyone know what size vent lines are on our bikes and where to get them? I'm guessing they're metric because I've tried 1/8" I.D. Parts Unlimited blue poly fuel line and it's too small and the 3/16" (I think) doesn't fit through the looms on the carb, although I'm pretty sure it fits the connectors. A few of my lines don't look so good, so I want to replace them all. Any help is appreciated.