So I'm a little confused about my thermostat set up. My enclosure is 5'x4'. I have a CHE on the right side and the left side of the enclosure set on a thermostat at 85. Now according to the "instructions" I would put the probe close to my heat source. Wouldn't this make it cut off before the entire enclosure made it to the set temp? Wouldn't I want to put the probe in the center of my enclosure so the CHE will shut off when the entire enclosure gets to set temp?