I have an 06' wr 450.It is running lean and hot.Im afraid the head pipe is going to start a fire. Ive done most of the mods- removed ais jetted to 170 from 165 opened the air filter box removed throttle stop changed back sprocket to 51 tooth white brothers pipe(e series). I have not changed the fuel pin clip to the 4th clip yet. would jetting to a 175 make it run richer? the bike runs great and fast,just real hot (head pipe glowing in dark). Is making the bike run richer my answer anyways or is there something else Im missing? thanks for your time!