As an addition to Larry Fisher's comments with regards to this series of pianos depending on the age, there is a domino effect of problems that effect the touch weight and general feel of the instrument. I will attempt to go through the most consistant series of problems encountered. I will assume that the obvious has been checked,tight flanges-blow distance-jack positioning-keybushings ect. 1. Damper timing and bad upstop rail seemed to be universal up to about 3years ago. 2. Too much hammer mass and incorrect tailing, very noticable in the bass section. Tapering the hammers down to approx. half the original thickness at the bottom of the tail,and getting a nice 5 1/2" radius, reduces the touch weight dramatically, and also improves the checking. 3. I have found key weights both for and aft of the balance rails. remove the rear weight. 4. Rub micro fine into the knuckles. 5. Most of these models are equiped with wippen assist springs that are very hap-hazardly adjusted. I open the springs up to obtain a touch weight of 53 to 55grams I have noticed the uptouch weight does not fall below 26grams. I also normally steam the hammers on these instruments to get rid of the harsh tone that is encountered. My experience is based on several dozen units that I have treated in this manner. I hope this imformation is helpful. P.S. I hope this data does not disappear into cyberspace as this my first attempt on this high tech machine. The closet steamer.
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