I you do manage to fish it out, could you please draw round it on a sheet of brown paper or whatever and let me have it in my capacity as technical librarian. You're not the first to have needed to know what shape it is! When you put it back, do get it the right way round. It looks wrong at first sight but most of the area is ahead of the pivot bolt so that the downhaul pulls the leading edge up under the pintles. Other way round will give you a very heavy helm.
Geoff
Geoff Harwood