I'll submit to both Jon and Avery. FWIW: In one of Steinway's publications (around 1990) on the teflon bushing, it states under General Comments: "While teflon is an inert substance, the wood surrounding it remains sensitive to climate. It is a curiouis fact that if clicking is present, it will be obvious in a damp climate and may disappear when it is dry." This almost supports the demonstration you mentioned, and at the same time, declares the inertness. Odd. No wonder the bushings were so misunderstood. And here I've held the belief they remained stable, while the wood fluctuated. All these years..sheesh! Thanks for bringing it up. Keith McGavern kam544@earthlink.net Registered Piano Technician Oklahoma Chapter 731 Piano Technicians Guild USA http://www.ptg.org/1999/conv/ PTG Convention, Kansas City, July
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