It is the norm. We took a lot of care in trying to press the nut as centered as possible and the wheels all came out wonky anyway. Just a limitation of this attachment method.
That said, good luck in getting them more centered, if you find a method that works that doesn't require a lathe, do share!
I have a couple to go back to robochallenge as they look buckled when running. I was gonna try and straighten them but didn't want to damage them further. I wondered if it was anything to do with the new red wheel as I have had loads of blue over the years and never had the wobble like these.
I sent one back to RC and they just sent me another one... with exactly the same problem!
But like Eliss and I have already said, quite a few people have a case of "wobbly wheel" and it doesn't significantly affect the drive of the robot.
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