I'm from the Linux world (first PC in '98 was Winblows, evicted Bill Gates end of '99 and never looked back). I acquired my first (and, sad to say, likely to be last, as Apple is turning into a Microsoft clone) Mac, a refurbished mid 2009 MacBook, a few months ago. I upgraded it to OSX El Capitan, and have been happy with it so far, but the battery compartment cover is peeling off. It's just glued to the battery. Apple customer service couldn't tell me what type of adhesive I should use to put it back in place. I'm hoping someone here can point me to the right product.