Hello, first post here. Hope someone can help me tell which exact frame I have and what lenses (name) I should purchase for replacement? Current lenses are pretty scratched (hard to see in the pic) and it would be nice to have some new ones. Also, can someone tell me if it's a pretty "easy job" to tighten the "nose" to the frame in the left side, as it's become quite loose, or if I need to send them to an oakley specialist? Thanks for any help.