Did a quick search and couldn't find what I needed. I have a 2012 Yamaha WR450F and it has a security torx throttle stop screw like my old 2003 WR250F. I got it out but don't know how much to cut to make it go full throttle. Older posts said to cut it to 18.2mm (from 24mm), which is 1/4". That still right? Also, I remember if the screw is cut too short, it allows the throttle to go too far, which the TPS doesn't like. I can't find the YZ throttle screw listed in the online parts fiche, anyone have a part number for it?