List, Tech Bulletin #2 Regulation has diagrams of both vertical & grand actions. We have been using it since 1993 and find it sells work- informs customers of the complexity of the piano action without swamping them with details. We find the Tech Bulletins & Service Brochures to be one of the most valuable benefits of PTG membership. Look good and work as advertised! Dale & Elizabeth Ward & Probst, Inc. Piano & Organ Service Dale Probst & Elizabeth Ward Registered Piano Technicians Wichita Falls, TX
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