just set up my 4-32 qt sweaterbox rack from reptile basics. well i have tested the flex-watt without it being plugged into the thermo and it got to the desired temp. so then i plugged everything back in and taped the probe to the flex-watt tape directly and set temps to 93 for the hot side. well for some reason it hasnt gone above 72 degrees. what is going on. if anyone has anything that would be greatly appreciated.