Quote Originally Posted by spartybassoon View Post
I've got an electronic one with a probe that is right where the hot spot is.
right on the glass under the substrate? If that is indeed where you have it and you are only getting a temp of 80-82, your UTH might be defective. They should heat up to 120* unregulated.

How much substrate do you have over the probe? is there any airflow under the UTH?