I think Rick has said everything really well, and while I understand your frustration at having a non working item I am going to play devils advocate.

Without a receipt how does Kuryakyn have any idea you are even the original owner? I would assume that like most companies the warranty is only good for the original owner, and in this case they have no idea if that is you or not. Items get sold on this forum all the time, not to mention ebay and craigslist, and without a receipt Kury has no clue where you are in the supply chain.

I hope you are able to figure out a fix to your issue or find your receipt, but I find it hare to fault Kury in this case.