[pianotech] (no subject)

[toddpianoworks at att.net]

I went to tune a Knabe grand yesterday.  On this piano, I decided to drop pitch a little before bringing up to pitch.  When I lowered tension on the monochords, I heard a loud snap followed by the pitch dropping drastically.

I have encountered an upright that did this and I was curious as to the reason why.

Thanks!
Matthew
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