So I have a Vivarium VE100 controlling my zoo med UTH. I run an accurate thermometer with the probe mounted to the inside glass of the tank. I run my ve100 set at 82F to keep my glass temp at 90-93F. The problem I'm having is my temps seem to creep at times. It will bump up to about 96F at it's highest point so I'll bump my ve100 down to 81 then maybe have to bump it down again to 80 then my temps will get too low running 87-89F. I go back to about 82 on ve100 and it will be fine for a couple weeks and start creeping up again. Anybody else that runs this thermostat seem like your chasing temps with it constantly?