Thanks Troy,

For clarity, after tack gluing the completed and measured setup, I should remove the wing and tube, but leave the ply rings tack glued (since they are the item holding the alignment correct). If I understand you correctly, the epoxy only creates a fillet around the ply ring, and the epoxy is not used to glue between the ring and the balsa fuse side. Do I have that right? If so, I suppose wicking some thin CA in between these parts first is probably a good idea?

Regards,
G