Quick question for you... This is something that I have been bothered by for a few weeks now. Is it possible for the aluminum bottom cover to become increasingly looser after subsequent removals? I.E. Does the bottom cover have a limit to the number of times it can be removed before it becomes so flexible that the bottom case begins to exhibit abnormal flexing when external pressure is applied (i.e picking the notebook up) My reasons for asking migrate back to a post that I made about a moth prior to this one concerning the solidity of the macbook pro bottom case. My bottom case is flexible enough that obvious flexing occurs if I apply pressure to the bottom in specific places (above the logic board, above the optical drive, etc.) Note my video from my previous post: http://www.youtube.com/watch?v=mH1HIiXdw4g What I'm asking is: Is this normal? If you note the position/orientation of my hands/fingers in the above video, I can quite easily cause the bottom case to briefly make contact with the logic board. "Easily" is completely relative, however, it stills requires some force. It requires concentrated pressure from just a few fingers. I know that the inside of the bottom cover is lined with a non-conductive surface, but I'm wondering if the amount of "play" and "give" in my bottom cover is within normal specs. I understand that aluminum is thin and flexible, but the notion that my machine could possible have a defect such as this is very bothersome.