Hi all I have a 1972 Lincoln Mark IV. All factory setup A6 compressor etc. I have converted to R134A and did the 1/2 turn CCW POA valve adjustment. New Drier. New AC Delco PAG150 oil. I installed 90% of R12 charge. In the garage idling with an ambient temp of 23C/75F I get vent temps of 51/52 F and ...