So what is the definitive word on TPS? I have searched the forum and found several people say it is unnecessary and to simply unplug it. Then, there is the crowd that says it will run so much better when properly adjusted. My bike is an '08 WR450 and it has been hard to start (E-start) when warmed up lately and I have to bump the throttle while running the starter to get it to catch. It refuses to start with the E-start when cold, but one swift kick and it will fire right up (brand spankin' new battery...). I've also been getting a little misfire action in midrange when holding a steady throttle position. Getting on and off the throttle it seems to be smooth with no popping on decel. I'm about ready to pull the carb and clean it to make sure all is well, but I was just in it last fall. It is pretty much bone stock other than the uncorking mods. I'm hesitant to start playing with jetting, but that may be in my future as well. Any recommendations for jets (0-3000').