The only real way to know what your hotspot really is is to use a temp gun. The probe only gives you a tiny idea of what the heat is. You can run a temp gun over it and see if your hot spot has a hot spot. I had a faulty bit of heat tape that was 90 degrees over the probe but there was a two by two inch area that was 115! The snake thankfully avoided it and I changed out the tape.
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