**** UPDATE****
Had the Herpstat II in for a few hours. I have it set at 95 with the probe right above the UTH, on the underside of the tank. The probe inside the tank under the substrate right above the newspaper is reading at 91.2. So I think the hot side is good. Now I have to get the ambient temps up. I have plxiglass covering at least half the screen top. I am going to foil the rest of the screen top and leave about an inch across open. Hopefully that will get the ambient temps up.