Excellent build! Back in the mid-1990s I did that kit too, but in 1942 colors. I was bored, so I dug an unbuilt kit out and started it, planning on a yellow wing 1940 version. My internet rsearch shows someissues - first (as on the older build) I had to file the lead profile of the vertical stabilizer. , then I realized that on Ducks, the vertial and horizontle stabilizers were metal skinned! I am sanding down the ridges. Also, Ducks interiors, at least until 1942 or so, were pained aluminum, as was the exterior metalwork. The Ducks served during transition times and things can get confusing.