Installed the BHR engine mounts in the 8 tonight. Wasn't too bad outside of dealing with corroded fasteners. I did find out they are left and right hand, I put them in the wrong way at first and had trouble with the bolt on the rear of the passenger side mount. Pulled the mount to get the bolt in straight which is when I found out the difference. No test yet but I did notice increased vibrations when moving the car around, I expected that with urethane mounts. I figure they will break in some after a few miles and the vibes will reduce.
I did not see any visible problems with the factory mounts, but they are completely sealed. A few drives will see if the problem has been solved.