This is in response to John Grant posting of Jun 23, 2020. I have what may be a piano very similar to the Kimball described in John's note. My piano is a 1923 Harrison built in 1923. It has a complete Kimball player mechanism that I've partially rebuilt ( with the Art Reblitz book). The stack is split. Pictures show a similar scheme to the Kimball described. The head/tracker mechanism is together and seems to work okay. The stack pneumatics are hinged and ready to be recovered (I have a yard of John Tuttle's .009" rubber cloth). The valve seats are done. I would love to see this go to someone who needs it (free of charge) rather than the landfill. I live in southwest Michigan and can be reached at tel.: 1-269-429-5898 Jim Hoss [ Ref: https://www.mmdigest.com/archives/Digests/202006/2020.06.23.01.html [ 4 expression buttons [ https://www.mmdigest.com/Attachments/20/06/26/200626_140611_20200626_083828.jpg [ loud lever [ https://www.mmdigest.com/Attachments/20/06/26/200626_140611_20200626_083841.jpg [ tempo [ https://www.mmdigest.com/Attachments/20/06/26/200626_140611_20200626_083846.jpg [ split stack [ https://www.mmdigest.com/Attachments/20/06/26/200626_140611_20200626_084005.jpg