I just recently did the center baering job on my e34. It then failed within 500 miles. Totally.
It's cheap - so replace the tranny mounts.
It my case, my tranny mounts had SHRUNK from the heat of the cat (they are directly above the catalytic conv) and changed the angle of the dshaft which in-turn tore the center bearing up rapidly.
It was something like 25.00 for both tranny mounts. It's good to do. Also - remember to pre-load it - or you will still have the drivetrain shutter.
good luck. www.BMAAutoParts.com
has them, too.