I am rebuilding a Kaps 88-note player piano and seek information about it and parts for it. The tracking device is marked "Kastner." It has double-valves in metal housings, one for each note. Some are missing, and I need to replace them. Is there somebody around the world who has, or makes, such valves? Does somebody even know whether what I have is a Kastner player mechanism? Any background or history on what I have will be much appreciated. I am attaching some pictures of the valve parts. Leonardo Forti Italy [ metal double valve [ http://www.mmdigest.com/Attachments/14/06/27/140627_220934_IMG_2521.JPG [ metal double valve [ http://www.mmdigest.com/Attachments/14/06/27/140627_220934_IMG_2522.JPG [ metal double valve [ http://www.mmdigest.com/Attachments/14/06/27/140627_220934_IMG_2523.JPG