I've gone through my air conditioning system completely and went back to R12.
Put in a nice parallel flow condenser which especially works great in bumper to bumper traffic. My compressor cycles but the temperature at the vents never goes lower than 52 to 54° regardless of the outside temperature.

I've read on this forum how you can adjust the Evaporator Temperature Regulator by taking it out and putting the capillary tube in ice water turning the screw that adjusts tension on the 'big spring' etc

What I have not been able to find out is which way do you turn the screw to make the evaporator 'colder'.
Clockwise for more tension on the spring or loosen it?
I'd rather make the adjustment without removing the entire thing and using the ice bath.