I had the same issue with play in the print head. I took the print head apart and made 2 foil shims between the bearing and the plastic housing. The play is gone although I have no data for you on how this will hold up over time.
Why they did not choose a longer bearing for this is a mystery, (like so many of the design decisions)
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gr5 2,224
I'd contact your reseller. Explain how your S5 head wobbles much more than another S5.
That bearing is quite short so it's easier to have problems like this. Also on the UM3 and S3. The UM2 never had this problem as the bearings are much longer. I know someone with a UM3 who had this problem and he fixed it with some kind of cylindrical shim. But I think there are better ways to fix your issue - maybe a new bearing or maybe a replacement plastic part for the head.
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