Hello:
Even do I no longer put hours at the Phoenix music store, I still have ties to it, and have been taking customers to buy arrangers, and many including myself, have a S900 and NO one had a problem...is most likely a coinsidental abuse/bad and or accidents in the transportation from and to...perhaps in the same music stores storage/handling?
Mine has no signs of any problem, and so the ones I sold or Juan Miguel too, no body we sold had issues with it.
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mdorantes