I have a couple questions containing problems with the 98 YZ400 and the 00 YZ426. I have been trying to search it but couldnt really find anything. I am looking to get some kind of yamaha 4 stroke and heard about the problems with the 98 yz400 and 00 yz426 due to they were new type of bikes. What were these type of problems and are they serious? Also, was the 03-05 yz450 all 4 speed trannys? I know I could get used to a 4 speed tranny but how does that play out? Are they just long gears almost like a wr? Thank you.