Hey all just joined the forums after having some trouble with my 2006 wr450f. The bike was jetted for around sea level or a little higher, then I moved to west TX / SE NM and the elevation is 3000ft to 3500ft. The bike has all the free mods done to it and has the Yamaha gtyr or something like that exhaust. Ordered the dyno jet kit and put the needle and main jet in as it said to put in also put in the adjustable fuel air mixture screw. Set fuel air mixture screw to 2 turns out. Only thing I haven't done so far was the throttle stop screw trimming to make it shorter. Anyway I got it all back together and fired up and it idles SUPER high I let it warm up good and tried adjusting the idle but nothing worked. The only thing that happened is when I backed it all the way out the bike died. Any tips on why the idle is so high and how to control it. Also has some popping going on to. Thanks hope to get some insight on why its acting like this and get it out on the road and have some fun.