If you noticed it, it means it's visible!!!!!! They must be perfectly aligned. It is absolutely not physiological... unless the piano was sold as new and it is not new! To modify the keyboard alignment, one must intervene on the paper shims of the center rail... but when it is new, the piano has been tested and settled. To see the misalignment, place a straightedge on the keyboard and a small light behind it.
I have many doubts! What is it? A Silent? If he changes it for you, take a normal one or a Yamaha.
P.S. Also, if there is one specific thing Kawai does, it is the unalterable key dip. I believe it has been "heavily" used. Send me a photo of the hammers with details of the Basses and the trebles