False neutral between 5th & 6th

[king 62]

Hi,
Funny thing reading about the 5th&6th gear. Friday i was riding my Busa and it either misses the gear and jumps back into 5th or clunks a little then back to 5th. I don't even know what speed I was going or what. but i shit my self thinking the box was broken. I did think that some thing had gone wrong with the change or it was me. Riding my Busa yesterday I just made sure it went into 6th all the time. But also I use 5th more then i should I suppose, I have no idea what went wrong, but after ridding the post I now know it was the box. My 1000 service is about due, and will ask the question and see what I get back. But I will still make note of my change up to 6th.
john

this has hapend to me as well 2 times now scaerd the shits out of me and my bike has done 35k and has a welded cluch,havent done a oil change yet since i got it. its not due yet but i think i might try that first but god what f*&^ing oil to use i dont no just to many