I purchased a 69 Z/28 many years ago and the car had a tilt column in it. I'm over 6 feet tall so it made it easier to get into. When I got the car I noticed that it only had 3 positions in the tilt not 5 like other cars. I found a 5 position and put it in but saved the original. Does anyone know the story with the different number of positions in the tilt mechanism?