Hey, I always use a hardshell case on my rMBP and 99% of the time in clamshell mode on an external display. Recently tried to pack it for travel when I realized it was somehow bend. It's not really bend on one edge its somehow bent in the middle of the macbook. I can bounce it back and forth when typing on it, which is really annoying. It's a 2015 machine - is there anything I can do or do I write it off? Everything else seems to work fine except the occasional black screen. Maybe it's past it's shelf life?