A hypothesis: What comes immediately to mind is that there may be a tech in your area who is using graphite on a lot of pianos on the same application. Since it all occurs on the BASS side by the rim and in the same spot it seems possible that when a grand is moved and put on it's side the mess then travels to the same place while in transport. Whadaya think? Rob Goodale, RPT Las Vegas, NV Ron Nossaman wrote: > Hi Gang, > I service three Yamaha grands that have what looks for all the world like a > blotch of graphite powder on the inside of the case. In all cases (sorry), > it's on the bass side, about two inches down from the rim top to the center > of the splat, between the hinges, and at a point roughly below where the > lid locator pin would be if the piano was on it's side.
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