hello I have a MacBook Pro hinge and it seems to be really loose! One side is extremely loose and one side is too too tight I find. I can hear my right hinge making a torking sound. The left side is loose at the point where you flip your computer up side down you can hear this sudden drop sound. It has already been tighten by Apple, and they say the only way is to replace the screen. $850 before taxes!!!! I don't know if it has anything to do with the hinge being reajusted. It was already loose but it ha seemed to have gotten a lot losser. what should I do? How does it even get loose in the first place?