Have any of you had Sena refuse warranty because you did not have a receipt from an authorized dealer? I found a vendor selling 30K headsets on Ebay and they claim to be authorized in their ads. When I asked them about not finding their names in the authorized dealer list, they claimed they bought from "WPS" and "Tucker" who are also not on the authorized dealer list. I tried to find a web page that said Sena products were not warranted if they were purchased from a non-authorized dealer, but I could not. All I could find was that the headsets were only warranted to the first "End User" purchaser. The web site also says that warranty returns should be made to the store that sold the headsets and that they should only be returned to Sena if purchased directly from Sena.