You have to have a little lost motion so the jack can get back under. Also try adjusting the hammer to check closer. You should be able to tell if you jack spring problems by flipping the jack a few times and seeing if it pops back...how's the damper lift with the key? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: Richard <richard.ucci at att.net> To: pianotech at ptg.org Received: 3/12/2010 10:19:43 AM Subject: [pianotech] 1940's Steinway console >List, jack keeps hanging up with fast repitition. Not key bushings, >jack spring? >Rick Ucci/ Ucci Piano
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