Ignition cylinder lock replacement: I need help.

Hey Stimpy, I just removed an ignition switch from a 71 dart swinger, so I'll run through what I did. After removing the steering wheel, take the screw out of the cancelling cam and gently pry the cam off the post. You will find a C- clip on the steering shaft that you remove to pull the items off in the way working your way down to the key switch tumbler. When you get an unobstructed view of the tumbler, you will see a small hole near the inside edge of the tumbler that you put a small nail, awl, or other push pin into to release the spring that keeps the tumbler in. Then you pull the tumbler out part way and remove your pin and the tumbler should slide out the rest of the way. Put your new tumbler in and when it gets to the spring, put the pin back in to press in the spring and push the tumbler in the rest of the way, then remove the pin and put the items back on in reverse order. Good luck, Geof