You simply need to slit the SFG's rear tab with a #11 / X-Acto blade and slip it onto the wing from the
front.
Optionally add landing gear
The kits come with landing gear. Landing gear are optional and just add weight. The advantage of
landing gear is if you're flying off a gym floor or hard surface it's fun to take off and land. Also, with EPP
the landing gear allow the plane to sit squarely on the floor or hang from a wall/ceiling. This helps
prevent warping of the EPP if it were to sit on a floor without them. Not horrible, but annoying when the
EPP vertical fuse gets cock-eyed to the horizontal parts.
If you choose not to put landing gear on you should hang your plane by the motor or tail so that it's not
sitting skewed when storing.