Apparently the problem is resolved. It was the viscous fan clutch. He tested it with a piece of cardboard and it completely stopped. Replaced it yesterday and instantly began to get 52F idling at high fan speed (I thought you were supposed to test at low fan speed) with pressures at 39F and 225F. While I know that is not perfect, it looks pretty close. I suspect he will get cooler temps from the center vent when the car is rolling.

Interesting aspect - says his condensor is painted black and he read that it would be 15% more efficient if he removed all the paint? What??? Assume in 1989 the MB engineers painted it black on purpose and designed around the inefficiency.