Some times it helps to read the instructions lol.
This time I rotated the model 45degrees on the print bed so the infill would run parallel with the wings/membranes.
Tweaked my print settings for some better results 220c layer, 200c layer 2+, layer height 0.1mm.
This print required very little finishing to assemble just a little fine work with the razor to fix some minor failures with the print, I think if I slowed the first layer some more it would print perfectly.
I've got this to fly about 10 meters launching by hand and more than 20m with a rubber band launcher. I tweaked the elevators to make the glider pitch up slightly and glide further. perhaps reducing the infill would make the nose lighter??? might try that on the next one I print.
Rotate model 45 degrees as per the instructions