Hi Gregor, Thanks for answering my post. I'm afraid, however, that I don't quite understand the screw and coin trick you're writing about. Sounds exotic to me. It seems to me that anything pushing the board forward from the back would also prevent it from vibrating freely. I realize that the only permanent fix would be to replace the board or reglue it with new ribs, but, as I wrote, the instrument is not worth the expense or the time. That's why I would be interested in suggestiions that could improve its sound somewhat, if that's possible. Cheers, Jean-Jacques Granas Warsaw, Poland
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