Refrigerator was not cooling properly.

I removed both plastic knobs from assembly faceplate. Then I loosened the screws holding thermostat housing to upper cabinet of fridge. Following this step, I loosened the screws of the thermostat to remove it. Next was the removal of the plate and vent pieces holding the thermostat wire sleeve in place. After removal of thermostat from sleeve; all steps were reversed and unit was up and running normal (cooling) with no problems. "Ahh, it's nice to have cool again "