From the factory it was delivered to me with an insufficient bobbin tension and was the same again in the repair. I was assured that this would be an isolated incident.
Excerpt from my error log:
When straight stitching often sews not clean, with thin Jersey is anyway overwhelmed and wuzelt this constantly down and the presser foot for overlock has been broken for the second time. You can not adjust the foot pressure.
By electronic blocking fast times, for example when the material is too thick it scolds because then allegedly the walk would not be down.
Even with the automatic threading must be able to, with my hand, I'm not much slower. But ok that's not a mistake.
If the machine cost half it would be in the framework but here is wrong value! Why the test winner was, I do not know.