The 560SEC has gone in for some work this week that should have a number of issues fixed. 
1) Front calipers rebuilt and rotors changed over.   
2) Will check rears while he is there, I have rebuild kits available for the rears should they be needed.   Given rears gum up more that fronts, I think the chances are reasonable they will need it.   
3) Major power steering leak - I suspect box may have to come out to be re-sealed.  Supplied a steering coupler if it does, might as well change while there. 
4) A/C can't keep a charge, blacklight shows a lot of leakage around the compressor.  have supplied a new compressor, tx valve, drier.  Also trying the klima kit upgraded condenser for better AC performance on R134A.  I like ICE COLD AC. 

