i just bought a 500 and the main problem i´m having is the bike seems to be sucking the charge outta my battery..it seems to be doing it weather its running or not..for right now i´m just keeping it unplugged in between stops and charging it when i can tell its starting to get low cuz i really don´t want to walk it home again! besides that, bike is so much fun and will hopefully be a sweet cafe racer by spring.