Sounds better now for sure. But I'm NOT sure if it was the OS or the different keyboard entirely. This is the third one I had. The first two were obviously damaged in shipment.
Both boxes had holes in the sides. One you could actually see the music rack sticking out through the hole.
The first one had damaged keybed because of it, and on the second one the sound board went out, most likely because of the damage.
I wouldn't ship a ball bearing by UPS.
DonM