My rear driver-side door has a metallic rattling sound. I can reproduce the issue by tapping on the metal part of the door directly above or below where the door latch is. It's a very annoying sound that is persistent now over anything but the most perfect road. I am tempted to take the door panel off but since it's sounding like it's well behind the panel I'm not sure if I'll even be able to see where the noise is coming from. Has anyone else experienced anything like this?