I have a Macbook Pro from 2010 and just recently two of the foot pads have fallen off. A little piece from one of them, I guess, broke off into the laptop itself, so when I move the laptop around I can hear a rattle from the little piece. Is it safe to remove the bottom of the Macbook so I can get that little piece out? I don't know anything about the hardware of computers beyond whats on the outside, so I don't want to touch anything or shift anything around that will make it stop working. Is it as easy as unscrewing the little screws and lifting it off just to find the little piece of plastic and screwing it back into place? Any help would be greatly appreciated.