I sold my 01 426 and bought an 05 wr450. The 426 had the yz timing and a pipe and had the punch of a ???? 250 2 smoker on steroids! The 05 is stock and smooth but ,,,,,,,, slow and well slow. I would like to get the 05 to hit like the 426 but not sure what all I need to do and dont want to loose the bottom end. advice? and what happened to the spell check?