Everytime I go to a dealer or parts store to pick up a needle or jet, I get looked at like I some kind of freak? "Why would you want to do that for? All you have to do is adjust the fuel screw." "Our Dyno tests all indicate the stock jetting is correct for the Mile High altitude." "just adjust the screw man." So I went to pick up a 42 pilot. I get crap from the counter boy. I say "Dude, do you own a 400?" He says no. I say everyone out here is changing their jetting after extensive testing and advice and having great results. "Why should I listen to you...who just tune it and release it with no testing what so ever." Give me the damn jet, take my money and give me my change.