Hi all. I am restoring a Wilcox and White Angelus piano player. Two "choker pneumatics" (mutes?) are mounted on the organist side of the tracker tubing outside panel: a shorter one on the base end, a longer one on the treble end. A piece of wood to create some kind of pneumatic is missing at the lower end of each one. There is evidence of old cloth that wraps around somehow. I can't determine what the missing piece looks like from the drawing in the company brochure I found online. Any information is much appreciated! Thanks, Anita Stull [ Front view of Angelus choker pneumatic [ https://www.mmdigest.com/Attachments/23/11/12/231112_183123_angelus%20bass%20side%20choker%20pneumatic%20front%20view.jpg [ Side view of Angelus choker pneumatic [ https://www.mmdigest.com/Attachments/23/11/12/231112_183123_angelus%20bass%20side%20choker%20pneumatic%20side%20view.jpg