In the middle of my WK-7600 front-underside there is an empty spot to adhere a rubber foot, just like the oval feet that already exist on the right and left (see photo, attached). It's been like this since I got it, and there is no residue at all, suggesting there never was a foot there. To all you 7600 owners: Does your keyboard have a missing middle rubber foot in front, or do you have all three front feet? Thanks so much, I'm a bit of a perfectionist and this kind of thing makes me very curious! UltraBird