Hi there! I've had a blast with my Ultimaker 2 GO. Finest piece of equipment i own!
I've mostly printed flat or small parts so I haven't really noticed the issue until now. More often than not, I get stripes within a specific z range. Not completely broken layers, but it seems like the z-axis steps the wrong height - i get both thin layers as well as fat layers.
I can see a small scratch in the z-screw, I suspect that could be the cause. The placement of the scratch also makes sense for where the bad layers appears.
What do you suggest I do here? Where can I find a replacement for this piece? Could there in fact be another cause of this problem?
Thanks in advance!