Just purchased an Oklahoma Joe's Combo! I need some advice on where I should place a probe port for this model. I've seen many examples made on different offset smokers but none on Oklahoma Joe's Combo or anything similar to it like the Char-Griller Texas Trio. Which probe port should I use? Probe-Port-Barbecue-Thermometer-Stainless or the IMPRESA Thermometer and Probe Grommet for Grills.