Touch Weight changes

[Alpha88x@aol.com]

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Carol,

        I am only a rookie out of piano tech school, but possibly the center 
pin bushings in the hammer flanges could be swelling (due to humidity) and 
this could be causing a "drag" if you will, making center pins' tighter, the 
motion stiffer, hence, the keys harder to depress, and shows up interpreted as a 
heavier weight. I am guessing a clue would be how fast (or rather sluggish) the 
hammers return to their rest rail or pads.

Julie Gottchall,
Reading, Pa  

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