Rear 5th and 6th always slip, any adjustment suggestions?
My rear derailleur always seems to slip from 5th to 6th or the other way around. It never stays put on those gears no matter which front gear it's on. All the other gears work great and the chain never slips off. Any help on adjusting this problem?
A Couple Things
1) The derailleur hanger could be bent.
2) Those cogs could be worn more than the others
3) There could be a cable/housing issue causing the cable to get hung up and not move the derailleur all the way.
Turned out to be the cable, it wasn't tight enough so it was catching the next gear a little. Retightened it and went for a great ride, never slipped once.