I'm posting an easy solution to "clunking", "clattering" keys here in hopes that it will help others with the same problem.  Richard Scher's solution above was my inspiration and mine is more aesthetically pleasing if I do say so myself.   My PX350's keys have been "clattering" for some time and got to the point where playing it was no longer enjoyable.  The problem so far only affects white keys that are not separated by a black key, in other words the B, C, E, and F keys.  As well, t
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