I am wondering if I really do need to send my XX's in for a tuneup, first off not excited about 3 weeks without glasses. Second, I'm not sure if I need it. The right side is a little looser than the left but it doesn't droop on your face, nor click when you kindly shake. As mentioned in other threads, this is my first pair of Xmetals so I don't have a standard to go by. I also just replaced all the rubber with Oakley root beer set. I am already buying lenses (black iridium) and I hope I'm really happy with them! I am happy the shipping isn't outrageous from Oakley! The only thing I didn't replace is the temple inserts. When can you tell they need replaced? I wish Tennessee had a place you can go and drop them off and 15 minutes later wah- lah!! You guys are lucky!