alright I've put 27.5 pilots in and 165/170 mains, k&n proflow kit and curtis sparks x-6 system no air box lid the air mix screws are 2 1/2 turns out. when i take off in 1st and2nd it boggs down just a little at first other than that it runs fine

 

What needles do you have and what position do you have them in? That sounds like what may be the problem, maybe to rich on the needle...

 

it may be that ur gearing is too high... if carburetor is not the prob then try goin down one in the front

 

my needle is in the 4 clip down from the top, I'll mess with it and see if thats the problem, my gearing could be the problem i'll check it out to thanks alot everyone...........