Yep. For the exact reason the Dampp Chaser will eventually resolve your piano's problem, it has made the tuning you did go wacko. Whatever the RH was in the piano, you can bet that the DC system changed it. If you listen closely, you can almost hear the tuning dissolve. Of course, there is always the chance that someone is unplugging the thing, which won't help either. Give it a chance to bring the moisture content of the wood to a stable point, say about 2 to 4 more weeks, and THEN put on your best tuning. regards: Steve Pearson, YAMAHA tech services
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