Radial Contact cartridge bearings will have a slight bit of run out at the rim , you cannot remove it, don't Try..

Some bike parts are not made to service, * Just Replace ..

maybe, knowing what you do now, you can pick another Hub which will cost More but be serviceable .

* works great, new, low cost to make, to lower selling price of whole bike.

(Remote Guessing , the above could be true as well)