Thanks Paulwho and fahrgewehr2. In my original post I failed to mention that the front engine mounts were replaced a few months ago because as Paulwho suggested the exhaust downpipe was touching the crossmember due to collapsed mounts. I didn’t replace the rear engine or the transmission mount. I'm not convinced the problem is with the transmission or the flywheel as there is no grinding noise in second regardless of how hard I rev the engine. I’ll replace the rear engine mount and let you all know if that fixes the problem. Thanks again for your input.

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Riadh
'89 560SL Rauchsilber
And what is good, Phaedrus, and what is not good -- Need we ask anyone to tell us these things?