HI RICHARD, Thank you for your comment about the back check/hammer tail. I must have forgotten to mention that the improvement of sound is = ONLY caused by altering height of the back check. The hammer is = absolutely free, there is no slight friction or touching the back = check going up towards the string. That is exactly why nobody has yet come up with an clear answer. Think again please! BTW re; factory secrets..I suppose if any of us has a specific = question we'll all answer as best as we can and share our information = otherwise I'll quit and wash cars. Andr=E9 Oor >BTW does the Yamaha S6 Steinway copy use tubular action rails, and the half moon balance rail bearing? No, just the normal fantastic Yamaha action with aluminum action = rails and common rail bearing.. >Solutions, make sure the tail is square to the back check. Make sure the tail is the "right" contour, especially at the shank hole. Adjust the back check. In a new piano there shouldn't be any problems with an improperly = bedded key frame, or warped action brackets, or warped hammer flange rails, = or stripped screw holes for the action bracket screws, misplaced action bracket shims, there is not excessive play in the keys, especially end play, etc etc etc. I like the "Hamamatsu Solution" turning the backcheck up one turn. Hope you share more factory "secrets" with us. BTW does the Yamaha S6 Steinway copy use tubular action rails, and = the half moon balance rail bearing? friendly greetings from: Andr=E9 Oorebeek CONCERT PIANO SERVICE Amsterdam, the Netherlands email: oorebeek@euronet.nl =83 where MUSIC is no harm can be =83
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