Hi all, I have a customer with a grey market Yamaha U2 which I installed a Dampp-Chaser system in about a year ago. I recently went for the 6 month tuning and found the soundboard cracked in several spots with some buzzing occurring. The customer said he was home when the board cracked because he heard it happen. The D-C is working properly and the piano is not backed-up to any heater, outside wall,... Just wondering if this has happened to anybody else or if anybody has some general comments on this. Thanks in advance. Doug Mahard
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