Question about KitchenAid 5KSM3310XEWH Classic 3.3 L

My machine that I just bought makes a slightly vibratory noise and the mixing head is not centred. Is this also the case with other machines of this model? Is this normal? Here is a photo of the mixing head: https://drive.google.com/file/d/1Mky3rSn-Xv_4uOy5OwEFSj1DzICyTpyv/view?usp=drivesdk