Bachus my reference.... a Roland, Fatar, Studiologic dealer for twenty years..
I have seen the development of the key actions and the factory that has designed and made the Roland keyboard beds..
I have had discussions with Roland personel over the years, and trust my first hand know how over someone's opinion..
In later years I have had relationship with people like Domenic (Lionstracs), and other keyboard builders with first hand knowledge about keyboard building in Italy..
I am sure some people take for granted that if a design is similar it must have been made by Fatar..
I did post previously above the link to a discussion group..
I never had a need to reinforce what I already know.