To all, Earlier this month I posted a YZ426 Premature Transmission Problem, stating my 2001 426 had lost its fourth gear completely. And I complained about the level of acknowledgement that Yamaha gave me regarding my problem was poor. Well, I had it taken apart and sure enough fourth gear was gone, and so was 3rd and 5th and not too far behind was 1st and 2nd. Ouch!! What was the cause? Was it premature wear, no! Was it neglect in changing oil and care, no! It was my riding style. I am an intermediate rider and I race regularly and I as many have come from a 2-stroke background. With that background I brought in a bad habit. I sometimes shift without the clutch on straigtaways or in the air. Now I am not suggesting that when I did it racing two strokes that it was healthy for the motor, but they were alot more durable. So a word to the wise, that I am sure many have already imbedded into their riding style, but make sure you use the clutch on this bike for every gear change. I didn't and its costing me $1,200. Just thought I would share my, how stupid I am story, for what its worth.