Question for you, RCS....if you suspect that one of these old and collectable cartridges has gone sour on the inside, what do you do? Leave as-is? Deactivate? Dispose? I don't have anything that goes back that far but I do have a fair bit from the 1930's onward, and none of it is getting any younger. I feel like there is a decision looming out there. And then there are the sealed cartons and spam cans.