I recently bought some new lenses from a guy on ebay. The seller has good feedback and the pics showed the "polarized" etching on the lens. I installed them today and now I'm second guessing if they're real lenses. The fitment isn't the greatest. The outside of the lenses have a little bit of movement in the frames when the original lenses didn't have any movement. Also, the etching on the new lenses are on the outside of the lens and the etching on my old lenses are on the inside of the lens. I haven't been able to find anything to say whether Oakley etched the inside, outside or both on their polarized lens. So, how do I tell for sure whether these lenses are real?