Rob Mitchell wrote: > I've been working with Yamaha on this, but the best we've come up with > is that some sort of atmospheric contaminant is attacking the strings. > Thought I would try this group to see if anyone has seen the problem. > This is on a 4 year old Yamaha U1. I tuned this one today, an older Yamaha. Same stuff. It's contact contamination, not atmospheric. I see it fairly often in Yamaha verticals, and it doesn't seem to hurt a thing. Maybe the guy installing the dampers sneezed... Ron N -------------- next part -------------- A non-text attachment was scrubbed... Name: 1020090903a.jpg Type: image/jpeg Size: 404793 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091020/6cf11180/attachment-0001.jpg>
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