I have a '72 Mach 1 with a 351 Cleveland and a toploader - fairly stock stuff. My problem - today - is the ignition switch. It turn clockwise just fine, but it will not turn Counterclockwise at all. For years it worked well, then the counter clockwise movement started being hit and miss. Now, it simply will not go to the accessery side at all. Has anyone run into this?? I am open to any suggestions before I tear into that column.