All, I got a pair of carbon/BIP Juliets off of CL a few months back. Everything seemed legit, even sent them in to Oakley for a tune up. They came back great...nice and tight. Problem is that there is no serial number OR model # on the left earstem (I.E., no 04-149 etched in). Was there a production run where nothing was etched onto the earstem? Thanks in advance.