>How can I avoid this problem? Why is it doing it only in the bass? > >Victor Sounds like you're getting a trampoline effect from the springy rail with the heavy hammers. If all else fails, try replacing the rest felt, and you might even put a leather washer between the rail and the nuts as a damper. If that helps, but not enough, make a stiffer rail. If that doesn't help at all, never mind. Ron N
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