CHT sender bending

Who knows?

 

...and the answer is...
I only had an 1800 head to look at. the spark plug is twice as deep into the head as my ones so it wasn't any trouble in the end.

 

Mine are AMC heads

 

Ah that explains it.

 

Easy peasy, now, about those pictures....

 

I do need to take some for agreed valuation.
It's cold, but will be warmer for van washing in a day or two.