On Sat, 29 Jul 2017 21:23:49 -0700 (PDT), wrote:

Bob! Late night fix. Worked great. Going to get me by until I
can order a new left hand thread thermo.

I don't know what the suggested fix was as this seems to be an orphan post,
but what I do just about every couple of years with the proprietary
thermocouple of my hot water heaters is I remove it, sand it, return it,
and it works again (for about two years).

I'd replace it with the hardware store type, but mine is a proprietary
shape so it can only be replaced with the original part.