On one of my bikes my rear cassette has perceptible wobble when spinning the wheel on the repair stand while letting the hub "freewheel". It oscillates horizontally, like a precessing top, without the rotation, about 2-3mm.

Having done some searches of various sites, I see that this is a common "problem", and does not interfere with mechanical function. However, I don't like it.

Before I pull apart the freehub body, do you think it can actually be fixed, or is this a manufacturing flaw that will always be present.

Advice appreciated. Cheers!