Originally Posted by
FBinNY
BTW- If you did all the basics - tight expander that doesn't slip, and loose stem - take a minute to take everything off down to the split expander cone and the first spacer. Press the spacer down and make sure it always touches only the expander cone, and doesn't bottom out on the bearing top cap. In some headsets you need a small OD washer on top of the cone before the rest of the stack.
This is the same as the centering ring, right? And yes, I have the small washer on top of this split ring as you describe.