Yes this "problem" is common, though its only the key springs vibrating. More to the point, why do you play the keys in such a way to achieve this effect? Certainly if I slid my finger down a key then allowed it to spring back, it would make a noise... but I cannot think why I would want to do that!!
Simon
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Simon G.K. Williams
simon@svpworld.com
Creative Music & Multimedia
http://www.svpworld.com________________________