I bought a 03 400ex and on the air box lid it has a dynojet sticker so I opened the carb up to look at the jets, after doing some research I heard there is a difference between keihn and dyno jets and how the dyno jet needle s are different. My main jet says 142rd and pilot jet says 38 with the little kihun star on it. I have a velosity intake goin on it and a yoshimura rs3 pipe with header going on it so I know I will need to rejet. I am going to get some kihun jets but im not sure if I need to get a new oem needle as well. What are your thought on where I stand with jetting. Thanks; stu.