I have a maytag refrigerator and have to offset the controls to maintain a temp of 37 deg in the refrig. Compartment. In order to get this I have to set the controls at 42.

See if these help: https://dl.dropboxusercontent.com/u/8010163/Maytag%20Refrigerators.zip
That is not all that unusual. If it uses a thermistor it could be going bad. You may need to check it with a digital thermometer and an ohm meter.