Intermittent total loss of electrical

Glad you found the spring!
I'm surprised the cover came off.
Maybe someone will have a suggestion about resecuring it.
Not sure what you mean about the cover. The springs are contacting a 'floating' piece of metal that was no longer restrained when I pulled the cylinder out of the switch body. I'm surprised only one of the springs launched. Is there supposed to be a cover that holds it all together? That would make sense. The key action is a little sloppy, so maybe its time to re-key?