SIGN THE PETITION! >> https://ig-hangflug.eu/petition
The builder said it's designed by Rüdiger Götz one of the editors of Modell (http://www.webshop.neckar-verlag.de/). Short kit from http://www.cnc-modellbautechnik.de/.Build thread on RCSB: http://www.rcscalebuilder.com/forum/forum_posts.asp?TID=9130&PN=2