I made a refrig-a-bator today and have it running now trying to get the temp stable. I had it down so the fluctuation was 97-100 degrees and now it's running 99-102 degrees. Any ideas on how to get it more stable? I'm going to pick up one of those child proofing refrigerator locks tomorrow to hold the door tightly shut but beyond that I am stumped. It's a freezer above refrigerator and I have a computer fan in the top running and the heat light below. Maybe I need a stronger fan?