I just purchased an 05 model NOS bike that came with AC 420s on it. It is my understanding that some older models of the rear hub had some parts that, depending on who you believe, were either installed wrong at the factory, or designed wrong in the first place. If I followed the story correctly, regardless of why it happened, the hub was changed to rectify the problem. So my question is, how do I tell if my hub is one of the bad ones? And what can I do if it is?

This will give you the info you need

http://www.amclassic.com/pdfs/Recall_Notice.pdf

thanks man. That's what I was looking for.