I removed the skins from the left wing, placed the right lower inner skin of it's left wing counterpart and traced the outline of the NACA duct from the right wing onto the left wing skin (see pic), as I plan to have two ducts to aid cooling during the hot Texas summers.
I then placed all L/E ribs onto their respective front spars and drilled the rivet holes, removing the L/E ribs after drilling.
Using the right wing lower inner skin as a template.
