Well I've switched it but the thing is, no matter where I put the probe, the part of the mat that's under the tub will be significantly hotter than where the probe is and it's causing overheating... I didn't realize getting the temps right would be such a headache. I mean I don't even have the heatmat or the thermometer on and it's reading 87.8F, like HOW? I just don't understand how the hell I'm supposed to get this thing stable!If I turn the heatmat back on, no matter what I set it to, it's going to be ridiculously hot. Argh................... why is this so freaking hard........................