Kenmore Elite Side-by-side freezing refrigerator compartment from time to time fixit

I recently battled the dreaded freezer deep freeze, where the defrost cycle would go but the drain plug would freeze up creating sheet ice to form on the bottom. Since fixing that, my refrigerator compartment is now reaching near freezing levels. I've tried replacing both freezer and fridge temp sensors and I also replaced the diffuser in the fridge side. I've closed the "chill zone" dial that leads to the freezer and also cleared the lower return to the freezer duct. I have the freezer set to 4F and the fridge at 41F and it will still freeze milk, vegetables, chicken broth, etc. Not sure where to go from here. Model number is 106.54606300

Submitted October 28, 2017 at 12:39AM by wings516 http://ift.tt/2zJSuzw fixit