The outer sheath (plastic) on the probe for my 066 melted at the spot where the wire exits the smoker and rests against the edge of the vent hole. I can see the two probe wires. I bought the replacement from CS that you found. This was at least two years ago and the original probe still hasn't failed, so i haven't replaced it yet. I am more careful to not let that section of the wire get any more damaged. I think the replacement probe uses a more heat-resistant outer sheath.