OK, so noone wants to get involved in my other thread!! Found my problem today, kinda!!!!! Bypassed TPS on Carb by jumping blk, and yellow wires in harness w/ TPS unplugged. Figured that since it now would run, that it was a bad sensor on carb. Drove over to Tucson and picked up my other xc, stole the sensor off it and put it on at the track figuring my sensor was bad. Nott!! It still would puke out about mid throttle. With a voltmeter on the coil you could just watch volts go to zero at mid throttle, Now here is where it gets interesting!! Stole a sensor off one of my YFZ's and tried it and it worked fine. Except to start it you had to twist it real far forward, and then once running you were able to rotatae it back to put bolt in. WTF! I would lift tank up/ w side cover off, take bolt out of TPS sensor, start it then rotate it and put bolt in and let it run until our turn on track. What a pain in the ass!! What the heck, someone explain this to me!!