RE: What Hinges to Use
A final note, something I forgot. Before trying to insert the continuous wire pin through the hinges, sharpen the end to a fine point with a file or emory board. After the parts are covered, the point will guide the wire through each hinge barrel.
For the rudder wire, I bend the wire over the fin about 1/2", make an upward bend, then a 180 degree small loop, cut off leaving about an inch, sharpen the end and push it down into the fin, capturing a small rubber band for the antenna.
Bob