Thanks for the info. I have a replacement switch and got the old one out of the dash easily enough, BUT... I wasn't ready for the tiny brass tumbler springs to be all loose when I separated the cylinder. I would swear one of them launched when the cylinder came out, and I'm not optimistic about being able to find it. It looks like the last spring is missing (if there is one)...
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That tumbler doesn't seem to move much when I turn the key. I am hesitant to put this back together if it is missing a spring. Afraid I won't get it back apart again if there is an issue. Any thoughts? Am I calling a locksmith?