I built a kegerator about 3 months ago from a minifridge purchased at lowes. The unit has a simple dial thermostat, with settings from 1 to 6. Set to 5.8, the beer is at 40 degrees. Set to 6? Froze 2 kegs so far that way. From reading around, it seems the answer is a temperature controller. I was hoping someone would have a cheap and easy suggestion on a temperature controller solution, since my 1-6 dial is simply failing me.