I've heard from a few people that as long as your macbook is still covered under warranty that the Apple Store will replace any parts on the macbook that are damaged or have wear and tear. Is this true? Because I want to make an appointment and get some parts replaced if I could like: -the keyboard - because it's worn -the disk drive - because it's loud -the battery - because it's losing its charge -and the fans (if possible) - just because they are mechanical and are bound to go out sooner or later. Would they do this for free? Also do I need to bring them excuses for each of these problems? Thanks for your time.