just a comment that if you switch from n1ef to another better needle you will need to reset your idle screw - back it out.
And fyi - with the carb that comes on your bike - going up to 2 1/4 out on air screw is fine..
Trick is to get the crappy n1ef needle out and get the idle screw turned down so it isn't pulling over and idle circuit is well separated and effective again.
jeff
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