I have an 05 YFZ that I have had tuning issues with ever since I got it. It has a 45 pilot in it right now and a 175 main. At a 45 pilot the bike starts only when its warm, and will rev to the rev limiter all by itself and with a 52 pilot, the reving issue is all cleared up but the bike will only pull start. When we were in NC (about 4-5 thousand feet higher) the bike would ALWAYS start like a charm and no reving issues. But when I got back down here I put bigger pilots in it hoping to have the same effect that I had in NC but it still wouldnt start and I went up 4 pilot jet sizes. I cant figure it out and I am sooo tired of messing with it. The other thing is, how fast does a YFZ turn over? Compared to our two 660's, my family all agrees that my YFZ turns over about only half as fast as the raptor and a new starter was recently put in. Any thoughts or comments? Thank you!