[NinjaNoob23]

Originally Posted by Motofool

Consider this:
http://faq.ninja250.org/wiki/Caring_for_your_forks

Clean and lubricate those stem bearings.
The top nut acts like a counter-nut to fix the position of the top track.

http://faq.ninja250.org/wiki/Steerin...ng_replacement

Thank you, that's the best/most relevant information you could have given me.