Here is a better schematic of my circa 1910 double-valve Steger Natural Player. I did this over a period of three days with AutoCAD. The file is a pdf. The file may need some magnification to see everything clearly, otherwise it is overall a better representation of the stack. Luke Myers ldmyers95@gmail.com.geentroep [delete ".geentroep" to reply] [ http://www.mmdigest.com/Attachments/17/01/28/170128_082531_Stack%20Schematic-1910%20Steger.pdf