You don't want the top of the bung to sit flush with the top of the top spacer otherwise you won't be able to get any preload on the headset.
@pifko started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
You don't want the top of the bung to sit flush with the top of the top spacer otherwise you won't be able to get any preload on the headset.