yep, witihin a week of each other, the first one let loose and i bought an oem replacement from the local MB dealer, it lasted about 35 miles and then handgrenaded, MB replaced the unit as defective and now I have about three hundered miles on the replacement.

I also replaced motor mounts, trans mount, center bearing mount and rear flex disc....no no vibes at all......even ran it up to 'bout 130 on the long bridge on the way to the office this morning....smooth as butter as a benz should be