Hello. I have been offered the purchase of a 1986 Yamaha C7 grand piano which, according to the seller, is "wonderful". I received 50 photos, but in one of them I see that the dampers of several strings in the central area, starting from damper 13 onwards, are not perfectly aligned with the strings themselves. In my opinion, this is a problem, but the seller says it is negligible. What do you think?