The push lever also allows you to turn the key to the "remove key" position. Are you saying that the metal arm is broken off completely?
There is a separate section that you can use on the switch for ACC power but unfortunately, when the switch is forward the ignition is also powered on. You really need to fix that release mechanism.
Also, if you didn't know, the early ignition switch isn't available anymore. You may want to wire for the available switch that doesn't use the brown wire ignition-start circuit anymore.