Robbie has kindly posted ten more chapters in my ongoing saga about
rebuilding the 58-note Model "W" Aeolian Orchestrelle Op. 8845.
Click on:    http://mmd.foxtail.com/Tech/AeoW/index.html

Other builders might want to look at Chapter 18.6, to find out about
all the different things that can happen to prevent very low pressure
pouch-and-valve logic from operating properly.

Richard Vance