Hi Republic of Pax,
same here, exactly the same. I fixed it by supporting the rear end with carton pieces so it gets pushed up a little. I still have a strix 2 gtx 980 and msi 980. msi is very quiet, strix is very loud, which is no problem, but the vibrating. Since i bought it, metal case seems not to be a good idea with this vibration.
I hope with RMA it will be better.
regards