I saw a "buy it now" listing for a 120gb rev B macbook air on ebay pop up for $500 shipped, so bought it right away. I used to have the Rev A and it was TERRIBLE. So I noticed on this one that the hinge is noticeably looser then my old one. It's not loose enough that it's a problem, but I'm afraid of it becoming a problem. The laptop has small dents on the corner so I'm sure Apple would claim it is user damage. But otherwise it is in VERY good condition, I would say 9/10. Is it worth keeping or will the hinge become a problem? Thanks!