I called appliancepartspros.com and chatted with Mary B. She asked a lot of great questions and spent a lot of time diagnosing the problem. We finally decided it was a damper stuck open. She recommended the part to buy. I watched the video and decided we could handle the repair and ordered the damper. My wife and I tore the refrig apart yesterday, found the offending damper stuck open, and replaced it. We are now cruising along at 36 degrees and back in business. Thanks Mary B!! We are customers for life.