Ignition problems on predator 500
i have an 03 predator. i put the white bros pipe k and n and jetted it. my problem is that in the mid it is cutting out . first thought was jetting pulled the tank the plug is in perfect shape the only solution i can com up with is that the ignition is screwed. talked to some fo my offroad buddies they all thought it could be the jetting too but were all stumped by the normal out come of checking out the plug i/e perfect golden color. im lost in what to do next let me know if you have any clues. what really gets me is it only does this crap in mid to starting high rpms , thoughts about jetting, but it is acting kind of like it is missing. if you all have a solution let me know.