Hey guys. My one month old 27" iMac (about a month old) at work seems to have developed a loose hinge so that the screen always tilts at its most downward. It still tilts up and down, but will always return to that position by itself. I've booked an appointment at a local iStore for tomorrow, but I was wondering if anyone knew the kind of work that would have to go into fixing it - how long would it be out of action? Is there just something that needs to be tightened or will there be way more labour involved? Thanks for any advice!