50 PSI on the suction side is high, but that is also temp dependent. David is probably correct, ie. expansion valve. Something puzzles me though. If you had pressures that high, your compressor should be cycling. If you want to try a quick fix effort, have some of the R-12 removed and see if it doesn't improve.

------------------
Jeff Lawrence
1987 300e
1989 300e
2000 Dodge Grand Caravan SE