I didn't wire the flexwatt myself bought it prewire is it something that I should bring up with the maker? The Top seems to lose alot of heat easily. I insulated just the top to get to the 90f hotspot ont he top without the insulation the hotspot would struggle to reach 87f and drops super fast when the doors are open etc. rest of the rack seems to not be affected so I have no insulation there.
With the insulation if I turn down the thermostat then I can bring the hotspot temp down in the bottom racks but the top rack would drop below 90f