Hello Tom

Around the HF, especially the LO, I wonder if you can trust a DMM having only wires {no isolation probe } at some pins.

It never did work while you have had it? ?

Assume, you tried another tube ?

?and since you did not say..it ?must be dead on all bands?

What all has been changed {or not] in that area… ??

De-Oxit on socket ?

Do you have other test equipment?