thailazer

Russ, The balsa on the tail feathers mounting area might not be strong enough. Nothing wrong with using a piece of the lite ply back there and epoxy it to the triangle stock and fuse sides. You could even put the tail feathers on with blind nuts and screws to make it removable in the future. ( If I remember, my Scout had lite ply back there.)

Also, the decking balsa is cross grain so that it is stronger in compression. Sure looks like a fun project.