Factory AC Will Freeze You Out

any switch from a ford /from the 80's should work just pull out the rubber cover on the inside of the switch there will be a screw you can adjust ,wound you install it at the compressor or splice the line near the evaporator

I am going only going to partially agree this may work. The aftermarket 4 Seasons, Parts Store, and even the OEM are fully adjustable though you have to pull the line off to get to the barrel to tighten or loosen the spring. What is wrong with the aftermarket it the valve will not close down far enough in a static state for the evaporator. It had nothing to do with the spring tension adjustment. If these can adjust the static position of the valve then I agree they could be better. If they can't then they may or not be any better than the aftermarket.

I ordered spare valves so I can try to rig something up to measure the static pressure drop across them then figure out how to shim the aftermarket to achieve the same pressure drop... someday.