Spring is almost here so I started to get the bikes ready this weekend. When I put my '04 WR away in Dec. I only had 2 rides on it (bought it in november, 100% stock). I noticed on my first ride that the head pipe was signifantly hotter that my 400 ran. I posted the question on here a was told that it is normal for the 450 headder to be extreamly hot, and at the time I had the factory jetting wich was pretty lean. Since then I've installed the JD jetting kit, opened up the airbox, greay wire, installed a PMB insert, as well as a ZIP-ty fuel screw. I only had one ride one it after the mods and I think I got it pretty well set up. But tonight I went out and fired the the beast up (after a fight to get it started) and within moments the headder was glowing read right at the motor. I does not seem to be running lean, but I could not really run it through its paces since the monoxide was starting to build up in the garage. So anyway the question is: is this normal? Like I said above I have been told that it is, but boy it just seems wrong.