I have...One of the macrumor members told me to get a 2.0 precision screwdriver and loosen the screws and retighten them in a star like pattern. It worked like a charm. I no longer hear the noise.
It seems that, once assembled, they install the screws in a line pattern rather than a star like pattern.
Try it out. It made me feel so much better afterwards, because I thought the back plate was stripped and getting worse.
Later