Hi Marcel I had a similar problem with the sustain pedal on an upright. The customer complained that it was too strong for her to use it for any length of time. I removed the return spring and weakened it with a grinder by removing some material. It has kept her happy now for two years. With a new instrument though you'd should have manufacturer's approval before you start altering their design. David Sanderson Littleton, MA Pianobiz@Juno.com
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