Greetings, I have some serious reservations about using pre-hung hammers for STeinways. I have just finished installing a new action on a 1965 model B and pre-hung hammers would have been a disaster. Why? Well, the strike point for optimum tone on this piano varies by section, requiring a hanging distance of 3 mm shorter at the top break! Had I just hung everything at 130 mm, this section would have been dead. Maybe if a brand has control over their process, this sort of variability wouldn't be a factor, but these are the hand-made "standard" of the piano world but they don't lend themselves to standard assemblies. G0 figure. Regards, Ed Foote RPT http://www.uk-piano.org/edfoote/index.html www.uk-piano.org/edfoote/well_tempered_piano.html
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