ok guys i'm stuck on this one. i have a 2009 yz250, just put in a new crank and carb with wiseco reed intake and new air filter. the bike starts fine and runs great with the choke on. soon as i have it warmed up and take the choke off it starts to bog at lower rpm and wont idle. i can keep it running with the revs up. with the choke on it runs perfect. got a 178 main and a 50 pilot, needle is on second clip from top. air screw is 1 turn out. running 97 pump gas with maxima 927 at 40:1.