skid,
Yeah I read some of Kevin's comments on Cafe Husky and they are not very good. He sounds frustrated. Other guys love the bike, but all riders and conditions are different. It just gives me the impression of being very focused, that being weight/performance and not longevity. This is just my gut feeling as an engineer looking at the bike, no experience, so I could be very wrong. 250Fs in general are a big engineering challenge as weight, performane, reliability, and cost are tough to balance. The Yamaha, while not the performance king anymore, is a proven reliable 250F motor in a woods bike.