Bought a new pair of M Frames on eBay from a trusted buyer. Everything looked great. Came with a shaded and clear lens. Shaded lens looked clear and worked amazing. Then I tried out the clear lens for some home renovating. And as soon as the humidity hit them they started look like they have cracks all over. Brand new lens. First time I've ever worn them. Will attach pictures. Is this common for these to have a defect like that out of the box or did I get myself a lemon. Also have some slight cracking similar to the clear on the tops of my shaded. Never noticed it until I really started looking. Not a big concern for me but will the same thing also happen with the shaded?