My 40 truck has an ignition switch that has a large spring behind the dash keeping tension on the chrome ring going through the dash. How do I remove the switch? Does the chrome ring turn? I don't see any flats when I push the ignition switch forward to expose the area behind the outside ring. I don't want to break it if it is not supposed to turn. There are no holes in the switch to put a paper clip into to remove the tumbler, but I just want to remove the whole switch from the dash. Thanks.