So, still having problems with my rack. Only got the one lesser in there, but shes in a tub with optimal conditions. Her rack has 90-95 on hot spot, 79-81 in cool side, its a 12 quart tub with aspen bedding, one hide and one water dish.

The temps Im achieving inside the tubs are: (all of them have 79-81 cool side)

Top shelf: 87-88 hot spot
2nd shelf: 91-95
3rd shelf: 91-95
4rth shelf: no tubs yet, broken on shipment

The temps of the flexwatt are:
Top shelf: 92-96
2nd shelf: 96-102
3rd shelf: 96-102
Bottom shelf: 92-95

What the heck is going on?? I have used accurate ways of taking temps including my Flukers thermometer, a few probe thermometers and my IR gun (which gave me similar readings as my other thermometers). I am using a oil filled heater regulated by a Ranco, set at 80 F.

I feel like my flexwatt might be dysfunctional, but I have no idea. If it was not working properly, wouldnt it not heat up at all? The flexwatt is snaked all the way through so the only solution would be to get the seller to send me some new flexwatt to run through myself. I can't increase the temps on the thermostat anymore without risking over-heating the second and third shelves so i have no clue what to do! I thought when I bought an expensive rack like this it would be plug and play but so many problems have arised Thanks for reading