i have a uth heater that is On a thermostat the thermostat probe is attacked to the heating mat under the glass. and is set right. but i have 2 more temp and hydro probes to monitor the inside of the hides. question is where these probes are to be placed. i currently have them down on the glass under the aspen shavings. issue with this is that the temp says its 90 degrees but when i use my infrared gun the ground says its 77 degrees on the top of the aspen. is this placed correctly or should u drill a hole in the hide and attach them to the hide its self