Ryszard,
Beautiful job on a difficult kit-- I've built the SH B-18A too, so I have the experience to say that. I'm fortunate though to live not far from a real B18A. This aircraft doesn't get the credit it deserves. It was the most numerous bomber in the USAAF inventory at the beginning of WWII, and it beat out the Boeing 233 (B17A) for the USAAF contract back in 1933. It was also the first US aircraft to sink an enemy submarine, going on to sink 2 more before it was finally relegated to training service. It could also carry quite a large bomb load for its size. Viewers may recognize those wings and landing gear as well-- since they were the same design used in the DC-2 and DC-3. There's a good book on the history of the B-18 and its successor: The B-18 and B-23, America's Forgotten Warriors, by the former director of Seattle's Museum of Flight-- Jim Hagedorn, who has studied this aircraft extensively. You have done great justice to this often overlooked warbird.
VR, Russ