Vince,
I have not done what you asked but Al Sanderson could give you some
pointers.
M&H had several different AA scales. I am redoing one from about
1917 and found some real problems with the steel sections. I did not take
the wire sizes because I was going to rely upon "A Guide To Restringing". To
my chagrin this data was not there so I had to take the measurements of the
speaking lengths and design a stringing scale for the piano.
If I can help further let me know.
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