[Shift in print layers]

THX for quick replay.

To the question, no never seen the error and it would happen at different heights.

I'll check both pulleys and stepper motors.

[Shift in print layers]

Using S5 for couple of years now. 

No issues in general, but lately I noticed that from time to time I have prints with shift in layers.

Please see attached photo.

It should have printed perfectly round cylinder.

Any thoughts what could cause that, it doesn't happened all the time?

Its not material specific, because it happened with different materials.

 

Thx