Took mine out with a screwdriver...new ones are £50 so put the old one back in. It was abit mangled, but bodge job works...
Left out the sleeve and packed the new bearings with grease...been going since end of december just fine!
My headet bearings have been fine. Stripped and re-greased every now and again. They are just normal integrated bearings so dont know if noticably higher quality can be found...