Hmmm it just seems that he is trying to get more heat...I would still put a thermostat on the heat bulb (dimming thermostat) as a just in case. I dont bother with a night gradient on any of my tanks, for example one of them is set to 32C, is 32.3C during the day and at night drops max to 31..8C
Do you dust your crickets with vitamins, a multi vitamin powder with calcium in is vital and the UVB gives the beardie D3 to be able to absorb that calcium. No vitamin powder = sickly unhealthy beardie in the long run.
Someone who keeps beardies should help you but i thought i would try help and stick my oar in
good on the digital thermometers