Someone use this needles N2XX ,N8XX on 250?

[adriano.ro]

I like my N3CW on my 250r 2014 but I have some hesitation,like lean needle position. I have tried all position,even on @4 ,I have that hesitation on bottom.
I have read on italian forum about the N2xx and N8xx needles. I have N2ZJ@3 with 42 and 175 is very nice on bottom but after 1/2 throttle is too soft. Has someone else on those needles?