Well not so fast! I checked again, and as Retro Grouch cautioned, the DR arm IS pointing toward the tire, ie hanger alignment problem. Anyone ever try placing a shim so the DR would correct to vertical? Maybe a clipped off piece of ziptie or something. Or is it time for a new DR?
Originally Posted by
Retro Grouch
Shift into a gear combination that makes the derailleur arm point downward. Then prop your bike up against something and look at the derailleur from the back. If it looks like the derailleur arm is pointing toward the tire - that's it.
Whenever i encounter a rear shifting issue that doesn't respond to normal tuneing, the first thing that I do is to check the derailleur hanger alignment. Most of the time, that's the source of the problem.