Hi, I've just got my first erg earlier today. Can't believe I've waited this long

However, I've notice that when the fan decelerate, there's a small noise coming from it like it's rubbing against something. When I looked at it through the metal mesh, it looks as if it wouldn't be perfectly aligned in it's axis, just like a bicycle wheel that needs some work done.

Is it normal? If not, how can I fix it? I know the shipping can sometimes be hard on the packages so I just want to make sure it's normal.

Thanks for your help!!!
