I just got Niche Zero and so far loving the result and the taste of the coffee. But I do have a question about a minor issue I noticed when I closely looked at the grinder while it is operating. As you can see in the video below, when the burr turns, the center hex bolt looks like it is not perfectly aligned. It is not centered so you can see that it wobbles a bit side to side. Otherwise, I think the burr itself looks aligned in the middle. Is this an issue? https://photos.app.goo.gl/sanpAGBho5F7eaFJ6 Thanks.