Previously I had reported a very bouncy ride in my '81 300td wagon. well, we took a road trip this past weekend and it was worse than ever!
There were many excellent responses to my previous post, one member stated that he replaced the front shocks and this seemed to help.

I looked back in the receipts and noted the front shocks had been replaced approx. 30k miles ago, as well as the rear struts. No other suspension work noted. Another member had mentioned the air cells in the SLS. The front shocks shouldn't wear out after 30k miles, should they?

It does seem as if the bounce is coming more from the rear. Should I replace the air cells? Big job? Can I do it on my own? I'm becoming a more confident DIY'er as time goes by...