I have the manual. I hope find someone that copy the pieces before built it.
There's enough info there to build one. Pick a proven wing section from your favourite model (I used a Selig section from the Top Flite scale kits), use the basic design methods from the manual & build it from scratch.
You can use the opportunity to fix the bad features in what is a basically a great design (like open areas of framework needing covering in crappy film, exposed servos under the wing to be wiped out in a wheels up landing, anhedral on the tailplane so it bangs on the ground if you over rotate, and, yes, that broken in the middle look!) - John.