It started a few weeks ago - one of the first 2016 MBP 15" with Touch bar. Would open it up and after a few minutes there would be a gentle "creak" noise from the unit (or the screen - not sure which). Over successive weeks its got louder and louder to the point where its now like a loud "POP" or "CRACK" noise - and its becoming quite disconcerting - to the point that sometimes people stare across the table at meetings when it does it ...... The machine seems to perform fine albeit it had to have a new keyboard a couple of months ago due to some issues with it..... Anyone else had this and had it resolved - or indeed did it get worse and there is a root cause??