Bye bye XR... I've been looking for one of these things in good shape for two months & finally found one in Nebraska. I live north of Denver and ride mostly from 5000 feet to 8500 feet & often get up around 10,000 in the summer. I'm assuming the jetting will be close on this bike, but Nebraska is a little bit downhill, so I want to know what everyone else is running around here. It's a 2000 WR400. Thanks for your help. Oh, and I'm a trail guy looking for a low-midrange pipe. Any suggestions?