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I can check the boxes on a couple of the items you mentioned. I've confirmed that the thermocouple is indeed a k type and that my PID is set to read a k type thermocouple. Also, the thermocouple is wired directly to the PID. Which vendors do you recommend or I can purchase a replacement k-type thermocouple?
Your thermocouple should be no bigger than 1/8" in diameter and stick out into the smoker about 3 inches. The placement does make a difference too. I like mine to be about 1/3rd from the top of the smoker. My temperature probe is not mounted, it just hangs in the smoker.