That is so incredibly sweet of you to offer! I'll definitely let you know if I need to take you up on that. I am still tinkering with and hoping to figure out what's wrong. It was working just fine before I did the substrate change, and I didn't even touch the thermostat during that process except to remove the sensor from the enclosure, and then put it back when I was done. Thankfully I have been home this entire week so I have been able to keep an eye on the temps rather than relying on the thermostat.