Hey all, Just bought a used pair of Radar Paths. I went to a Sunglass Hut today and compared with theirs and the only difference I noticed is that on the inside of the left arm near the hinge, there is some kind of model number printed onto it. Mine doesn't have this. Is this normal? Also, if I lay my glasses upside down on a flat surface, one arm touches the surface whereas the other doesn't, so when I wear it it is a little lopsided. Is there a way to adjust the frame?