I purchased a vintage (mid 50's) fridge, tested it prior to putting it in the kitchen, and it worked great. But, all I really tested was the small freezer compartment, and water froze, so I figured I was good. However, after installing it in the kitchen, I'm finding that the refrigerator compartment is freezing everything! I can't find a separate regulator, other than the one on the face of the freezer compartment, that mght regulate the temp in the fridge compartment. Any ideas?