Fairly new Creality Ender 3. Seems like everything is leveled and snug, belts tightened. However, some of the sides are coming out stringy. See the image of this simple dome - you can see some of the areas on the right are pretty nice, but other side is stringy. Similar story on XYZ cube - e.g. X comes out pretty well, but its opposite side is stringy and separated. Any ideas? Thanks.