Hello, A while back I went to get my trackpad repaired and they said they needed to replace the whole logic board. This was under warranty and now I realized (it's been at least 2 months) that some of the screws are loose on the bottom casing. They have not fallen off yet, but I am concerned that they will soon. I understand that it is a (P5?) pentalobe screwdriver, and am unsure where to purchase one locally. Can I take my laptop to an Apple retail store and have them just tighten it for me? I do not have any warranty or Apple Care anymore. Will it cost me anything? Thank you for any assistance!