I believe that the Sway bars play a critical roll in keeping lift or roll minimized. You may want to check your sway bar links and/or sway bar bushings.
I'm speaking from general experience and do not know the intricacies of your specific vehicle.
That said, hope this helps.
'85 380 SL (sold)
'85 Carrera Flatnose
'71 280 SL Signal Red/Cognac