Originally Posted by
madpogue
Re. # 5 above, the close-up shot is a little too close up to be sure, but the straddle cable angle does look pretty "steep" to me. A slightly wider shot showing the whole straddle, up to where the main cable connects, would help.
And seeing the overall crud factor, # 2 and 3 are both worth a look, just for good measure. Even pulling out and lubricating the cables could help.
I assumed (know what they say...) that pic was taken with the brake lever pulled and the calipers fully clamped down on the rim. [MENTION=518431]gthomson[/MENTION] is that pic with the brakes lever pulled or not? That's too close to the rim if that is how they are at rest and you should revisit your straddle cable angle/height. #1 and 4 are still definite first steps here, but 5 is a maybe depending on your answer to the question.