hmmm...........a few ideas loosen the screws holding the let off rail so escapement is very inconsistent push out a key lead so it rubs a neighbor key put some wide front rail punchings under some # keys, so the naturals on either side hit them too. on a vertical, set the lowest tenor damper head so it interferes (buzzes) with the highest bass string on a loud blow.. loosen the screws on the hinge of the damper lifter rod closest to the dowel. Makes for spongy and uneven lift. That's a start (it can be fun being sadistic)! Gordon Large, Maine
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