Hi folks. I'm building my own custom BBQ grill/smoker, and I plan to use the Stoker to monitor and maintain the temperature inside the smoke chamber, but I need to try to ensure that my smoker is airtight. I've seen high temperature gasket cement like Rutland Hi-Temp Stove & Gasket Cement, but I wanted to hear from actual experience and advise that other folks have. Thanks in advance!!!