Okay so I just had the most aggravating lens replacement ever. I ordered a new set of XX lenses direct from Oakley for my TIO2 (its a first generation). I pop them in and....guess what? like a 1/4 inch gap at the orbital screw point. I spent 30 minutes trying different things and trying to get the gap to close so I could get the torx screw to bite-no luck. So I ended up taping both lenses and filing off some of each lens from about the orbital screw point, all the way across the bottom and around the lower inner corner. After I did this, the lower part of the orbital was able to close enough so I could get the screw to bite without any fears of stripping. Now, I don't know why this is....somehow I doubt the lenses are actually BIGGER (or orbitals smaller)-so the only thing I can figure is perhaps the newer lenses are thicker and this isn't allowing them to sit far enough into the orbital grooves. As anyone else had this happen or thoughts on the cause?