Dick, your experience with the rattling marbles reminded me of one that happened to me years ago. I took a call from a rather deaf old gentleman and went to see his piano, a good quality older upright, which needed some work. The room was a bit damp and the action sluggish, and the hammers needed refacing, in addition to tuning. I explained about fitting a Dampp Chaser, and he agreed to go ahead with tuning, hammer refacing and Dampp Chaser fitting. All of this was conducted at screaming volume as he was very deaf and didn't have a hearing aid. In the course of conversation it became clear that he was rather a crusty and difficult soul, and was estranged from his only son. Sad. On a rainy evening some days later he phoned and said "That Dampp Chaser you fitted - it's causing moisture on top of the piano". I said I didn't see how that was possible and volunteered to go round and check it there and then (he didn't live too far away). When I got there, I discovered a puddle on top of the piano - not any kind of condensation. "Look", I said "there's where it's coming from - look at that drip coming from the ceiling cornice just above the piano!". So next thing, there I was. clambering around his attic to find where the rain was getting in! Missing roof tile. I put a pan in place to catch the drips. Service above and beyond the call of duty. What's perhaps interesting, though, is the illustration of people's perception, or lack of it. You'd think that, as I'd explained what a Dampp Chaser was, and shown it to him, he'd understand that a simple low-wattage tubular heater low down in the piano could not possibly cause a puddle of water on the top of it. Best regards, David.
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