I thought I owned a Demon, but it's really a Gremlin..

You will need to remove the OC spring with a diaphragm clutch, but be careful around the pedal if you disconnect the linkage with the OC spring in and the pedal up, because it will slam the pedal down and you don't want a body part in the way if that happens. I've seen many cars with dents in the floorboard from it.