Alright heres my story. I got a crf70 a little bit ago to learn how to wheelie on (instead of my 650r) and i got this bike and it starts right up everytime. I wanted some more power and went to re-jet it. Put it all back together (im familiar with this stuff) and went to a 13t front sprocket. Put it all back together and kicked it over on full choke and it fired right up. Took it off choke and that thing reved to the moon and back. on choke its rough but not sky high. if i take it off and crank the throttle it dies...this is stumping me pretty good. Ive taken the slide out a million times and its all the way down in there and i can watch it open and close. Ive tried turning the idle all the way down, no changes. There is one thing i noticed and the alignment nub inside the carb for the slide is gone. The guy that had it before me musta messed that one up but the slide is on the screw on the bottom...what could it be? ive worked on numerous 3 wheelers, quads, dirtbikes and what not and never have ran into this problem. Hope ya guys can help me cuz google isnt doing much for me.