have you broke in the engine yet
does it run
what are the symptoms

for breakin
the low speed needle should be flush
the high speed needle should be 2 1/2 turns out from closed is all the way clockwise but dont tighten it just tighten till you feel a little resistence
idle screw should be set to allow about 1mm opening in carb whil throttlew trim is in neutral position



hope this helps out if not keep trying well get you taken care of