i'm with Pifko. check your high and low limit screws on the rear derailleur. if you're indexed correctly for the first seven cogs, then it may just be a matter of fine tuning the limits.
@Hovis_Brown 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.
i'm with Pifko. check your high and low limit screws on the rear derailleur. if you're indexed correctly for the first seven cogs, then it may just be a matter of fine tuning the limits.