In a message dated 6/16/98 4:02:09 PM, you wrote: <<I began to suspect that the geometry of the action might be problematic; however, it was only after comparing an original teflon wippen with a replacement wippen from Renner that the differences became quite obvious.>> I hate to throw a curve ball here, but.... I have a 1972 S&S D that has Renner shanks and hammers with the original teflon wippens. There has never been a backcheck problem with this piano. Food for thought. Tim Coates University of South Dakota
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