Wondering if the keys have any wiggle in them sideways?
If concerned about the keybed, you can always purchase something like this.
http://kawaius.com/product/mp11/Problem is you’ll pay two to three times as much as the 560 and will be missing many of the features of the 560. 😊
I did read in one article that Casio uses the Fatar 100 keybed. Don’t know if that’s true or not.