I noticed that my basically mint condition Mid2010 MBP's lid started clicking occasionally when I close it. It seems to happen on the left hinge, and only after the screen has been open for a while. Does anyone know what this is indicative of? I'm assuming that it means the screws on the hinge are either too tight or too lose. Should I attempt to fix it myself? I really do not feel like going to an Apple store to get it repaired if it's something simple like tightening a screw (yes, I know that in order to get to the actual lid, you have to do a lot of other disassembly, I've done it before). Thanks guys!