Help!

I just got my car back from the Mercedes dealer where they put in the front subframe modification.
My 450 SL front end now sounds like a rusty 50's pick-up truck.
It also feels light on the road. (I think that I will bring it in for a wheel alignment and tire rotation this week).
What can I do to lubricate the front end and get rid of this noise? Has anyone here ever had this problem before?

Thanks
Jack Miller
1980 450 SL