Opening the display worked fine for me, but when I closed it again, something definitely didn’t quite go right – I think it was trying to push against the missing back cover. I managed to carefully close the display by pushing against the metal corner thingy that was meant to push against the cover, and so far the laptop still seems to work, but I concur with Asher and James, be careful at least. Patrick’s suggestion sounds great if I’d seen it in time :)