Answer: This is often mostly brought on by poorly arrange derailleur limit screws and these would require adjusting. It can be caused by a bent derailleur hanger This Site employs cookies (not biscuits) so it works reyt good 'n correct like. Confer with our Privacy Plan For more info. Check https://travisyxupk.blogacep.com/38046354/indexing-bike-gears-can-be-fun-for-anyone