I'm planning to buy a 99 or 00 WR400, any suggestions on what specifically to look for on my test ride? Any common problems on these? I've got $2500 to spend on a plated dirt bike and I see 4 WR400s available in my area, 99's and 00. I am not familar with "modern" 4 strokes or Yamahas. I've been riding an 1987 XR600 for 25 years but I want something lighter with better suspension. I test rode one of them so far that had an aftermarket Edelbrock carburetor and it ran great except for a slight bog off of idle in first gear at 4 mph from throttle off to throttle on. That seemed like it could be a problem on tight trails. Any suggestions or insights from WR400 owners or former owners would be much appreciated.