I have what is probably a 30-year-old CDI furler, which is in good shape, except for a missing piece on the plastic drum. I went down to the boat this weekend and wanted to raise the drum up to inspect the turnbuckle, but found I could not lift it. I took the cotter pin that connects the drum to the extrusion, and the extrusion lifts up and down, but the drum does not. Any suggestions? Do I have to disassemble the drum halves? The newer CDI drums seem to just sit down in the metal cylinder, on top of the nylon and washer. I'm not sure what, if anything, holds the older one down.