IIRC, Champlin's D9 has the wrong wings on it. That D9 and a Ta 152 were crated and shipped over from Germany. After testing they were crated up again. The Ta went to the Smithsonian and the D9 ended up with Champlin. However, they mixed the wings up. So, the D9 has the Ta's wings and vice versa. Champlin tried for years to get the Smithsonian to switch the wings back but they never would. Probably due to red tape.