E-flite Byp Yak 3D ARF - Manual (Page 12)

 5. Place the top wing onto a flat surface. Position
the wing struts and fuselage onto the wing. Hold
the wing flat while gluing the fuselage and side
force generators to the wing.
Note: It is recommended to use a square to
check the wing strut alignment to the top wing.
Note: DO NOT glue the lower strut extension at
this time.
 4. Position the wing strut in the hole closest to the
aileron of the bottom wing. It may be necessary to
trim the reinforcement tape from the hole before
fitting the strut. Use a square and foam-safe CA
to glue both the wing struts into position.
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