Just bought a new 2000 WR400 in Calgary, Canada (altitude here is 3300ft)and whenever it doesn't start on the first kick it starts to drip fuel out the drain hose on the bottom of the bike. (A fairly large size spot on the garage floor) Our temp in the last 2 weeks has been between 12 and 20 degrees C, and I've never had to use the cold start choke!? If I get the piston to TDC and give it a good kick it almost always starts on the first try and runs good. (no fuel drippage while running) I also posted recently concerning a problem with backfiring when closing the throttle after a good blast in 3rd or 4th. Most of the response I got from the pros out there suggested turning out the fuel, pilot, or mixture screw depending on what you decide to call it to richen it up. (Which make me wonder if the fact that I don't need the choke to start means the mixture is already too rich?) I turned it out 1/4 from factory (now at 1 3/4, but haven't had a chance to really test it, as I can't hit the high revs in my back alley!) I'm going riding in the mountain foothills on Sunday and want to make sure everything is OK. From my first good ride I can tell this bike kicks butt, it just doesn't seem right for a new machine to backfire and spill out fuel!! Just wondering if anyone else has experienced these problems! My dealer is really no help at all so far. Please help, I know someone out there has the answers. Everything on my bike is still stock, including timing and the air box cover.