I just got back my MBP from Apple, they diagnosed the 3rd party RAM stick as faulty. I bought another one and am trying to install it. The latch below the battery requires 3 small screws to be removed - I managed to easily remove 2 of them. There is one that simply won't budge...before I damage the screw, I would like to take it somewhere they can remove it. Where would I be able to take it today Sunday? Thanks!