Dividers were reinstalled because they lift the blood products slightly off the bottom of the cold well.
Smaller fans we installed to provide more room for blood products.
A new lid seal was installed. It's softer, and hopefully has sufficient compliance to seal the non-parallel surfaces while allowing wire for testing to pass through.
Upon cooling down from room temp, the bottom surface of the lid was cooler than top, causing it to contract enough to bend the lid, and pull the seals away from the fridge surface. I stacked weights on the top of the lid to flatten it out. These weights do not seem necessary in subsequent tests.