I am buying a BP from ballpythonbreeder.com and I am trying to setup the tub. I am using a 12qt sterilite with a flukers UTH controlled by a Rancor thermostat. I am trying to get the temps inside the tub right but I am getting 3 very different readings and am not sure what to do.

On the hotside inside the hide I get a reading of 96 from the Rancor Probe (I know this is supposed to go outside the tub attached to the uth but I just wanted to get another reading), 95-110 from a zoomed reptitemp depending on where its pointed and 101 from a zoomed analog thermometer.

I have about 1 1/4" of shaving substrate in there. I'm not sure what temp to go buy. Clearly on the hotside from a couple of the readings IF those are the accurate ones. Any suggestions?