Originally Posted by theden
Is there some trick I am missing?
There should be a threaded cone that keeps the bearings against the race (or vice-versa - I don't remember for sure). On the outside of the cone is a lock nut that keeps the cone from moving once adjusted. You're obviously moving BOTH the cone and lock nut, keeping you from getting adjusted. Use a thin "cone wrench" to keep the cone properly snug while you tighten the outer lock nut to freeze the adjustment.