I was kind of in a hurry, yesterday. Upon further research, I found better instruction manuals for the 'puzzle box' attachments.
For the 27 there is
https://www.sil.si.edu/DigitalCollec...ges/image1.htm and for the 15 there is a download available at
https://andrewcaddle.com/wordpress/i...e-august-1905/
Kind of interesting that the instructions mention the position of the spring plate for the 27, but not the 15.
Janey - Neat people never make the exciting discoveries I do.
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