So we just built our racks with back heat. They've been set up for almost 8 hours now and I was checking the temps. There's almost a 10 degree difference between the bottom rack and the top one. The top two shelves contain 15 qt racks. Those two don't have much of a difference between them, only a couple degrees.

http://www.acepythons.com/racks.html

There is the setup. How can I get the temps more stable throughout? My Helix thermostat is set at 110* ... on the 41 qt racks it's up to abotu 86* in back but at the bottom two it's only about 76*-77*.

Does it take a couple days for a new rack system's temps to even out?