Allo mate, 
 Um, I would have thought that the bit of the original ticket that you have left would be good enough to state that you have a licence. I mean, its good enough for another copper if you were to get stopped again while you had sent  your original licence off. So it must be good enough for a track day.  But.....................?????? 
 As for the rear tyre. I think it was a case of "stop that bike and then see what I can find."  

 
  DC. 
 [Edited on 18-9-2004 by DC]