I have about a dozen cooks on my 340 and have abandoned the temp probes. I have a lot of grilling and some water smoking, charcoal gas etc etc under my belt and I understand stall, low and slow etc etc. However, I can not get a feel for the 340 using the supplied probes. Temps are to high, adjusted down, they rise to fast, plug them in and they start at 117 degrees, unplug them, plug them right back in and they start at 88. They are unreliable in my opinion and I will opt for manual or third party systems from now on. I can cook way better using time than the supplied temp probes, and that is bad, they throw the entire cook off. I have butts, ribs, chicken, and turkey under my belt and being careful and using 2 probes has never provided me with correct information.