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Edgefly,

Try these resources. Someone will either have what you're looking for, or the drawing you need to get one made.

National Aeronca Association:
http://www.aeroncapilots.com/

fearless...

Email Neale Dunstan of Serenity aviation. They have the rights to the Spacewalker now.

http://www.serenityaviation.com/

There is also a Spacewalker Yahoo group with active builders & flyers of...