Hi Tory,Sounds like the plastic retaining screw has snapped in the shaft.Removing the plastic thread is not such a big job,just drill a small hole in the screw & push a small tapered screwdriver into the hole untill it grips & remove the screw.Reinstating the clutch mechanism is more complex,requiring lot's of patiance & luck.Email me if you would like more info.
sewinginfo@homecall.co.uk
SEWMAN, June 2008