I'm building a HLT from a cooler and am wondering how other people have mounted a thermocouple or RTD. I want to use the liquid tight RTD sensor from Auber, which has a 1/4" NPT thread. My original thought was to use a weldless sight glass kit from bargainfittings with a reducing bushing, but I have a thick walled cooler, and a 4" probe would presumably project only 1/2" into the cooler. Is this OK? I haven't been able to find either a 1/4" bulkhead that would work on a 1.25" thick cooler or a longer RTD probe at a reasonable cost.