Hey all. Was talking to a guy out my local track who has an 06 YZ450F and has only had it for the last month. He has just blown up 5th gear and is really dissapointed with it so its up for sale before it costs him another $1000 (aus $) I am just wondering if anyone else has heard of any problems with 5th gear? because he says the exact thing happened in his 04' WR450F and recalls of something like 6 other Yamaha 450s with the same problem. He says the only thing that he can think of that caused it is that he does 5th gear wheelies but surely it should be able to hold up.