Bluthners have weird scales. Rescaling this piano is an excellent idea.
By using a guitar pick, pluck the strings where the tone seems weakist. If
you get the same tone there is something amiss with the piano. If you get a
bigger, stronger or more rounded tone the problem is with the hammers, over
strinking, under striking, too light, too tight pinning, etc. I have noticed
that Bluthners produce a light tone when played lightly and a big sonorous
tone when jplayed with force, something I have been striving for in my
voicing with less success than I would like.
Lot of luck.
Newton
This PTG archive page provided courtesy of Moy Piano Service, LLC