Look at the exhaust where it would come into contact with the crossmember and you may see a mark where it rubs. Change trans mount in addition to motor mounts.

__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E