Hi,
Very interesting thread this.
I wonder if cutting a strip of paper or thin plastic and using it to line the can before reassembly would be an idea? Do the whiskers solely grow in the ungreased space or through the grease as well?
Maybe paint or lacquer inside the can would work..?
I think have a plan... I have a couple of RP18 Sovereigns coming my way. Assuming, as hoped, there are dead AF11x transistors in them I'll take the opportunity to do an experiment. One set can have the transistors zapped with a capacitor and the other I'll dismantle the transistors, clean 'em out then reassemble with a liner or paint inside the can.
As I'm unlikely to part with the sets I'll add a couple of labels inside the sets with details of what I did and when, then see what happens
Regards, Kat