Hi @Hakan ,
From what you are describing, it does look like the Y motor is moving too fast and missing some steps.
As part of the assembly process, we do run the printers through a 1 hour ‘burn in’ procedure where we move the printer in different directions at max speeds. An issue like this would have been caught, but it seems either your unit slipped through the cracks or the DHL guy was a bit too aggressive with the box. 
Your best bet is to lower the maximum speed at which it moves at. Doing this is quite easy.
-
Connect your V-One and open up the software.
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Open up the console by pressing Alt+ C. The console allows us to communicate directly with the V-One.
- Enter the command M203 Y100. This will set the maximum Y speed to 100 mm/s. (Default is 125)
- Confirm the change went though by entering M503
- Finally, save the changes to the printer memory by typing M500 and try printing again.
This setting only affects the max speed the motors move at. It is safe to lower this value and will not have an impact on printing because the printer never reaches max speeds during a print.
Give that a try. If you find it is still stalling at 100mm/s, then try lowering it further down to 80mm/s (M203 Y80). If that still doesn’t work, let us know.
Cheers
