I recently purchased a 2001 yz426. I have been out of riding for about 10 years or so and used to ride XR's exclusively (100,200, 250 and 600) They were great bikes with only oil changes needed. I am a little apprehensive about high performance of the 426 needing a lot of work. I would appreciate any insight anyone might have to the amount of MX they have had to accomplish on their 426. Thanks.