Conrad, As you already are aware, piano technicians are constantly fighting humidity. I tune several of these Yamaha P-22 pianos on a regular basis. IMHO this piano is not as susceptable to humidity changes as a Steinway. The instrument obviously is in an unstable environment. The Damp-Chaser system will probably help the problem But who is going to fill up the bucket of water every time it runs dry and then too, I suspect they are not going to correct the problem. So, just tune more often if possible. Tommy Black Decatur, Ala.
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