Wouldn't the person who buys this find out after the first tuning, and then immediately make a warranty claim? I don't understand how the dealer didn't know about it already and fix it after a minimal prep and tuning upon arrival?
My guess is that the dealer will wait until someone to purchase it and make the claim. At that time, the dealer will send a technician to repair it and charge it to Young Chang/Weber. That way, the dealer can sell it for the price of a new piano and the repair won't cost him a dime.
Another trivia information is that the dealer requires his customers to use his tuner for the first two tuning (the dealer pays 50% of each tuning). Since the tuner also tunes the piano in the dealer's floor, he must be aware of the problem. Maybe they are working together, I don't know. I checked the name of the tuner and he was not a member of the PTG.
How do I know all this? Because I actually purchased another piano from this dealer and after delivery I found problems with the finish. The dealer was very slow and reluctant to respond to my inquiries. Finally, a piano finish specialist came and inspected my piano, and his conclusion was that the piano needs a total refinish. He recommended I get a replacement since I purchased it anew. The dealer, however, tried everything to delay the process and eventually I lost any confidence in this dealer and I asked him for a refund. He then just ignored any communication attempts from me for 2 weeks until I threatened to report him to BBB and other online reviewing sites. Within 24 hours, I got my money back and he had his piano. I am done with this dealer and I will not have anything to do with him anymore.