I have a '02 crf450 /Lonestar chassis quad I have been building.It has a 480cc. kit,Hotcams stage 2 cam ,ESR clone stepped header& silencer.and a ESR TRX450r airbox eliminator. 45 pilot. second clip from bottom on the needle,210 main. The problem I'm having is that the bike will not pull on the top end!! It has great bottom and a wicked midrange,just is really flat on the top. WTH??