Now, after I took them out, they all popped down on the way to the counter!
Is there such a thing as overprocessing them, creating too much of a vacuum in the jar so they ping in really quickly? (I don't think so.)
Then one fell over, popped up, and after I set that one up straight again, it popped down again... if they all stay down by morning, I'm going to assume they're safe. Right?
This is probably the last canning I'll do for the season anyway. I'm going to freeze my pumpkin puree.