My 426 has been awesome to me. It's been the definition of bullet proof. Knock on wood, I've had no major mechanical problems w/ it but its time to part. Its too heavy now and I'm at the point where I want 450 snap. I've done regular maintenance to it and I know she's in good health. What can I look for to make sure the other guy has done regular maintenance on his. I almost want a raced 450 because the racers I know take better care and put more $$ into their bikes than the trail guys do. Thanks.