I run bar-end shifters. Double crankset. Shifters and cables are roughly 2 yrs old, with 1,000 - 1,500 miles on them.
The front derailleur won't shift the chain into the smaller ring up front. Well, it does work OK when the bike is on my workstand, but not when I'm actually on the bike. I followed directions from several sites as to how to adjust the derailleur correctly, and spent quite a bit of time messing about, but I still get the same result. Fiddled with the limit screws, no difference. Tightened the cable manually, no difference. The cable is really slack when I shift into the small ring up front, it just won't pull the chain far enough over. Also, the little barrel adjustor for the front derailleur cable seems to give way whenever I shift... the cable goes slack again.