you should take your glow plug out, and see if it is wet ? and while its out, bump it ont eh box and see if a rush of fuel comes out ? if so it could have too much fuel in it. but generally if you turn your top end needle to flush wiht the top of the housing, then its just your bottom end then that could be too lean or rich.

blowing fuel into a new engine is not reccomended unless yu know what you are doing. if you blow too much in, then the engine could hydraulic which is worse then running a few turns wiht out oil. if you blow it, then just watch the line till fuel just reaches the carb, not actually blowing fuel into the engine.