..which ended rather badly.
More research is necessary, into exactly what that little loose cog I found is for and why the machine goes CRUNCH when doing anything but stocking stitch... (I think there may be a bit of a cause-and-effect thing going on there).
I'm still a bit excited by the stocking stitch thing, though..... I went home and knitted a 1.5 metre cotton scarf. I'll see what it looks like when it's dyed.