Where has me nut post gone then !!

[fazersharp]

Why doesn't a Yamaha-fitted nut need to be replaced? Do they have some special way of fitting the original?

Exactly -Remember we are talking about 98 fazers, what is diferent about a 98 that means that yam says they are ok and a 99 onwards is not. Im not saying a 98 refitted 9mm nut by us is bad, but you have to rule out any 98s with a loose nut that has been refitted- by who knows. So far no one has reported a 98 with an untouched factory fitted nut that has come off, of the 98s I have found with a loose nut it turns out it has already been refitted at some point