Just helped a friend rebuild his 04 blaster top end. Now that he has it back together it will idle fine but will not rev up with out falling on its face. We cleaned the carb and even tried a carb off a known good running blaster. I think that the cdi box is not letting the quad rev up, We have tried running it with the TORS system and without. I am more of a honda guy so I am not familiar with a lot of the tricks or problems with this quad.