How much riding have you done? How many times have you tightened the cones?
AC bearings take a while to break in, you'll need to adjust the preload a good few times as the bearings settle.
@Irishane 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.
How much riding have you done? How many times have you tightened the cones?
AC bearings take a while to break in, you'll need to adjust the preload a good few times as the bearings settle.