> > >If the keybed had sagged, then the middle action bracket would have been >loose, but it wasn't it. It wasn't the soft peddle rod moving the hammer rail >up, because the rod was disconnected. > >I adjusted lost motion, and the piano played fine. But as Clyde asked, why >did this happen? > >Wim While the keybed may have been stable, the balance rail could certainly be flexing a considerable amount. BTW, I too notice lots of lost motion movement in Yamaha uprights. I was a bit suprised to see one of our Australian friends (Ron OVers?) citing the U1 as being especially stable in that regard. Perhaps the balance rail configuration is slightly different/more stable for the Aussie market?? Happy Holidays to everyone! Patrick Draine
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