Don Mannino had a very good suggestion: mute the duplex sections of the strings in the "wild areas" before tuning. (Seems that the wild banshees sometimes like to roost in the duplex areas.) Use masking tape, and remove the tape when completed. Any "wildness" should be calmed down enough to allow a decent tuning. What happens after the tape is removed is, well, endearing to the piano. (Of course, addressing all the string termination points should be done, too.) This method of muting the duplex sections in this manner to help control wild beats was something new to me - thought I'd pass it on. JP
This PTG archive page provided courtesy of Moy Piano Service, LLC