RE: Super Duellist 2/60 Build
Pete:
I was hoping someone else would come in here, but so far no one has.
We made minimum changes in the ribs. One as you have noticed, is going to multiple ply ribs to reinforce the mounting of the wing joiner tube, and another is burning the holes for the wing joiner tube. The lightening holes are also exclusive to the SD 2/60, the 2/40 came with solid ribs. The basic outline is still the same as the Duellist 2/40 Mk II.
One thing I just remembered though, we got a note from one builder about the plan drawing itself. He said that his print had one wing panel longer than the other. I blame Kinko's, but you might want to check this.
Bill.