I read thru lots of posts yesterday and think I got it right on the first try, although it may need a little tweaking. I screwed the screw in about 10 turns and my compressor wasn't coming on, backed out a few turns and got it to start running. It didn't seem like the compressor was coming on when set to 1, but set to 3 it came on and my bottles of water inside were not frozen overnight, just cold. I ordered a couple fridge thermometers to check it out. I was hoping to use my keg system asap, so I may end up dragging an old fridge inside until I have it tweaked.
So far looks good at the moment. No clue what temperature its at yet though.