Looks fine to me. The disk tray in the empeg is mounted on an angle partly in anticipation of situations like this. From your photo it looks like the disks would almost be sitting level, which is the ideal situation. (you can get an idea of the angle the disk(s) in the empeg sit at by looking at the disk tray mounting screws on the side)

(list 6284, Mk1 S/N 00299 4GB blue [for sale]. Mk2 S/N 080000094 26GB blue)