Ah, it is not unlike playing with LEGOs as a child then....

I managed to er, "convert" the poor thing into a barrel lens (got the aperture mechanism back in place, and screwed together the casing so it sits where it should), seeing as I have a FP shutter it should hopefully suffice until I can get a hold of a new supermatic, speeds are probably even worse than they were with the in-lens shutter, but hey.