Hello all! I have made a incubator out of a large fridge! It has heat(light bulbs) and humidity under the fridge that blows out the bottom and then is sucked off the top! The problem is cold spots, my trays are solid(no air flow) and the trays tip from back and front. So the trays block and change air flow. I’m likely going to change them to trays that allow for air flow. Please any good ideas you have,much appreciated!