Can anyone tell me what size and thread the thermometer port on an Oklahoma Joe's Longhorn smoker is? I purchased two new thermometer's from River Country in 1/2" NPT assuming this was the size that I needed, but I was wrong (and we all know what happens when we assume, right?). As it seems that 1/2" NPT is the most common size and the quality thermometer manufacturers (including Tel-Tru) seem to treat this size as standard, I'm thinking of either drilling out and tapping the thermometer port to 1/2" NPT threads or installing a thread adapter similar to this one. The latter option is the one that requires me to figure out what size and thread the port currently has. Can anyone help me out with this? Thanks.