Its nice that there was an attempt to make something correct for the early C3 tilt tele columns, unfortunately the pieces aren't made to the correct dimensions, and they will not work in a column. First of all, the rack opening barely allows the pivot pin through the opening so it is very tight. Put in an original rack with the supplied rack gear and its too tight and hangs up, so the gear is too large. I appreciate the low price but wasted a lot of time trying to get these to work.