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That prop strike happened during the landing of the first of the 2 flights according to some info George sent me. It seems that the aircraft that the Smithsonian has is probably the second prototype which never flew.If you notice in the video after the first run the prop blade tips are bent as a result of the nose jumping up and the blades hitting the ground.
In the latter part of the video with blades repaired or replaced you can then see the small added tail wheels to each vertical Stab to prevent the same problem happening again.
Got to move fast if I want any hope of getting 3 or 4 entries done this group build !Woah, slow down there was just getting my head around the start and your half way done! Hmmmm raised panel lines.... SANDING!