[pianotech] stuck keys after one hour of playing

[A440A at aol.com]

Barbara sez:
<< He said he's been having some trouble with keys starting to stick <after> 
he's been playing for a while--like an hour--and then they just won't go.  
We've made an appointment for me to come out and have a look.  I will check the 
action centers & keys for friction levels, of course, but this seems sort of 
unusual--well, I've never been witness to such behaviour, anyway.  Has anyone 
else experienced such symptoms?  >>

    Yes.  I feel like something is galling on the center pin, either at the 
jack or hammershank.  Sometimes, if you take the part off and attempt to 
forcibly work it back and forth to loosen, the opposite result happens and they lock 
totally up.  I don't know why, but I have had Yamahas, Samicks, and lots of 
Renner parts do this.  I repin.  
Regards,


Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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