I have a 2004 ltz400. Yoshi slip on, new carb, raptor petcock, prodesign intake with 4in filter, stock main jet now, with 25 pilot. It runs good until you go wot. At wot itll cutout and want to die. I cant figure it out. Had to big of a jet before so I went to stock to atleast get it running right and still does the same thing. Any advice?