In regards to my original Harmony.

Wings, well, mine were Foam core.. which I built in such a way that required me to add flying wires (carbon rods). The Harmony 2 has built up wings and avoids this problem.

For the Fuse, it is similar to the 2 and what i did with mine was:

1. I built the stabs and rudder as traditional open bay structures with sheeting to the high point and then cap strips.

2. I took the fuse sides and starting at the nose, I sheeted solid till the firewall.
Then from the firewall to the leading edge of the bottom wing, I routed out 1/3 of the sheeting thickness except where the sheeting touched formers
Then... from the leading edge of the wing to the last former behind the wing I routed out 2/3 of the sheeting thickness except where it touches formers.
THEN... from there back I removed all the sheeting ...except where it touched formers.

3. On the Harmony one, there was a lower foam turtledeck that i cut large lightning holes in once I sheeted and glued it to the fuse.

4. I cut or sanded or removed or replaced anything i felt was unecessary or overbuilt.

Chuck