Off the top of my head I would not remember I would have to take it apart (I will do that later) - fighting a bad headache right now hoping aleve will kick in so I can go fix it.
I have a feeling I must have dropped a washer somewhere. Only thing I can piece together is perhaps it was missing since last time and the spacing has allowed the nut to back off since no direct force would be applied except torque from where it screws on and not from said hub/washer.
2005 Ninja 250R
1999 Ducati 900SS
1974 Kawasaki F7C
Some people will tell you that slow is good -- and it may be, on some days -- but I am here to tell you that fast is better. I've always believed this, in spite of the trouble it's caused me. Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba....