Beginners luck I guess...
I just received my 9cf Frigidaire yesterday and located the course adjustment screw within 2 minutes covered by a piece of white tape right underneath the dial.
Gave it about 10 cranks clockwise and set the units temp control at about midway. I filled up four spare kegs I have with water and dropped them in. I put a big glass of water on the hump with a floating thermometer in it
Right now after 24 hours...my temp is 38F
I'm still waiting for the delivery of my faucets and shanks to build my top and coffin, so I have a bit more time to watch it...but I think I hit the sweet spot right off the bat