Daniel Bopp is a master builder. He first contacted me several years ago when he was looking for information about White Knight for a model he was building. He also built a wicked model of the Pond Racer and a turbine SS1 (jet intake through front windows).
Anyway, I finally mey Daniel at Reno 2014, and he just sent us a picture of a Wasabi Button replacing a missing button in his Bolkow Bo-208c.
Thanks Daniel!