I have recently taken on a new customer with a new Mason & Hamlin Grand, Model A. The previous technician has apparently needled the hammers(Renner blue) to death and the tone is very lacking. Any suggestions as ways to bring them back up. I have lightly filed and lacquered(6 to 1) but still not much improvement. Thanks in advance... ilvey Pacifica, CA ilvey@a.crl.com
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