I've read about the notorious overheating issues with the stock bikes (fans come on too late to cool the engine), but I'm having a different issue: my fans come on when the temperature gauge is at about 50%, and then I start boiling over coolant! This happened to me on a 55 °F day after riding less than two miles on the first ride of the day. Any thoughts on this? I'm guessing that perhaps something in the cooling circuit is clogged? Coolant not circulating or something?