I got a 426 friday(1-20-2006), and promptly took it to Windrock and tortured the poor beast. For those of you that don't know anout Windrock, it's a functioning mine with at least a hundred miles of roads/trails and 3000+ feet of elevation changes. Fun place, you can go for uber technical single track to wide open 5th gear mine roads in 5 mins, I was in heaven. We managed to find a trail that was satan incarnate, snot-like mud and downed trees. We had a helluva time going down the trail and had to turn around when a large oak(at least 36" diameter) blocked the path. Going up the trail was a lesson in clutch slipping and holding on to a bucking and roosting machine. I broke my decompression lever...lol....that was fun to work around. I noticed the slip when we found a wide open road(for those massive earth movers, easily 50 feet wide and smooth as could be) and began the hooligan game of "let's pin the throttle in top gear". I was chasing a KTM 525 and not doing bad, just that 4th and 5th would sometimes rev much faster than normal. No way I was going to look behind me at those speeds to see if I was just losing traction. Anyway, I noticed that in 4th and 5th I would get some clutch slip, or what may be bent forks in the trans. I'm leaning towards slip in the clutch as I get no surge or indication of gear hopping. My bike does not live with me, I leave it at a friends garage that's about 40 minutes away, so I can't just pop over and piddle. I will check the clutch cable first off, it was dis/engaging quickly in the stroke, that might be the only issue(gawd I hope it is). Now lets pretend the clutch is slipping. Can I order a "clutch pack" or something of that nature from Yamaha, depend on a dealer to send me home with the right parts or do I need to tear it down and have an eyeball on the situation? Anything less than 200 bucks is fairgame, above that I'll have to KNOW what I need to do some budgeting. Some rough numbers on a: 1:Clutch rebuild 2:Transmission problem with 4th and 5th(please no, oh please!) BTW, this bike is too much fun. Makes a barrel of monkeys seem like doing quadratic equations. Roll on 3rd gear wheelies had me giggling like an idiot.