Hi all, I've got a brand new (4 days) 15" mid 2014 MBPr making a weird clicking/popping noise on the underside of the case. It happens intermittently when I move the computer or shut the lid, almost as if the those actions causes parts of the hardware to shift enough to produce a sound. It seems to be oriented near the middle and back case screws on the left side. Speaking to AppleCare resulted in trying to take it to a service provider, as I'm almost two hours from the Apple retail store where I bought it. The service provider was less-than-enthused to take a look at it, and said it would be no less than 2-5 business days if we wanted them to find out what the issue was. I use it for my business, so I wasn't quite prepared to wait that long. Has anyone else experienced this? Could it just be a loose case screw? Not sure what to try next. Thanks!