For some reason I cannot get my Ultegra 9 front derailleur dialed in. I've read Sheldon Brown's derailleur adjustment instructions, but can't get just right.
My problem is the shift to the big ring from the small ring is either extremely sluggish (hesitates like it won't catch), but then if I adjust it just a little it completely jumps past the big ring and drops the chain off the crankset towards the pedals. (I've already tightened up the chainring bolts so it's not a sloppy chainring shifting all over the place.)
I've been using the high gear adjustment on the front derailleur to alter the position of the outer plate of the cage. What am I doing wrong here?