<html> <body> Dave, Do they cycle the temperature up and then down through the day? Andrew Las Cruces, NM At 12:57 AM 2/13/2004 -0500, you wrote: <blockquote type=cite class=cite cite>Listers, I had a tuning today on a brand new Kawai RX-3 6 foot 2 grand.  The piano has been in the house for maybe 3 months.  It was closed up tight, but when I opened it, I saw that rust was already starting to form on the strings and on some of the pins.  I was shocked, and was at a loss to figure out how this could happen, especially in a house with radiant heating(that's another issue).   It is on caster cups on a painted cement slab floor, and there are no plants in the room. I had a few ideas, and I'm pretty sure I figured out the reason for this early oxidation, especially after talking to the rather freaked-out owner tonight. So what, in your esteemed opinions, might this be caused by? Dave "rust never sleeps and neither do I" Stahl </blockquote></body> </html>