My 2001 WR 426 has a high RPM stutter at approximately 1/8 throttle. It will spit and sputter at 1/8 throttle, but revs out just fine when you twist the throttle further. After messing around with the fuel screw without having any affect on the stutter, I unplugged my TPS and the problem instantly went away. Using the manual as a guide, I checked the TPS coil resistance, and it was within specs at about 4.2K ohms. I then attempted to check the ohm "sweep" as I opened the throttle. Resistance started out at about 700 ohms, then swept upward to about 2k ohms (throttle opened 1/3), then the meter went to open for the rest of the throttle opening (from 1/3 to WOT). I want to try to adjust the switch to see if I can straighten it out, but I have to wait until I can get a security torx bit to losen the mounting screws. I'll get one tomorrow, but in the meantime I thought I would see if anyone here had experienced anything like what I am dealing with. Have any of you guys had any luck adjusting the TPS? I know some guys just disconnect the TPS and leave it like that. I assume that if you just unplug it and leave it, you lose some functionality of CDI's ability to vary ignition timing depending on throttle position, but how much does it really matter? Any thoughts and opinions are welcome.