1992 Crown Vic, ignition switch will not unlock

Any ideas? I have replaced the commutateur interruptor switch on the under side of the steering column, and also am putting in a new ignition switch (with key), The problem I am having is the shaft, which slides back and forth, with the hole for the commutateur interrupter switch pin does not slide back far enough for the key to be released from the new iginition switch. It seems there might be an adjustment needed, or maybe another broken part to replace. Any ideas will be appreciated. Thanks