Hey all .. I'm thinking about putting together a track tard and am looking into YZ's at the moment ... I've been perusing the classifieds looking for second hand bikes and I'm just interested in people's opinions on the price/performance tradeoff over all 3 models. I can get a yz400 for around $4000 in local aussie pesos or a 426 around 4500-5000 and the 450's are up around 6500, which is a bit rich for my budget concious potential tard project So ... the 426 sounds like a good compromise but I've heard a million and one stories about their unreliability ... woodruff key problems, clutch problems, gearbox problems (esp bad for motard of course ) ... so assuming that a 450 is out of the equation, am I better looking to a 99 yz400 as a better bet at staying together? or were the 426 problems resolved sufficiently? Thanks! Neil.