This might be a long shot but I am looking for some sort of diagram/cut away of the ignition switch on my D90. I have had the worst time getting the two screws that hold the switch in place out and disassembled the switch in order to get it out. I've replaced this switch before and have taken apart these Lucas switches and put them back together. This time I'm wondering where this tiny spring and tooth inside the switch go? Please see pics. Thanks in advance.