I need to touch up a regulation on a NEW (5 yrs old) Mason Hamlin grand. I have "The Piano Action Handbook" which lists specs for the "current Mason Hamlin companies" This book is copyright 1991. When did the present M+H company start making these pianos? It seems like a nice piano. I'd never seen one before. The hammer line drops suddenly about half way up the keys. Something's going on for sure. If I'm lucky, key height, dip, and jacks won't need work. I don't work on a lot of grands..I've only regulated 3 grands. Two of them needed action bracket replacement. (remember those growing action brackets?). What does the sudden change in hammer line say to you old timers? Thanks for any and all help. -- Frank Cahill Associate Member, Piano Technicians Guild Northern Va
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