Here is the bottom of the wing showing the fixed landing gear hole covered up. The directions said nothing about puting this piece in either but is was very flexible there and weak so I installed it anyway. Later the wheel well covers will cover this area.
You can also see the hole in the rib where the aileron extention lead goes through. Also you can see the outboard end of the wing spar up against the inboard rib.
If you look real close, you can see that I re-fiberglassed the areas where I had to re-grind out so the wheel well covers would fit.
I also put some fiberglass up against the ribs too for more strength.