Am hoping someone can provide an explanation and solution for f. der. post-shift "rebound". That is, when I shift from the small ring to the big ring the der. cage duz not stay in its outermost position, but moves inboard a bit, causing chain rub when I'm on the outermost rear cogs. Is the front shifter worn out, or is there an adjustment to solve this...? The front shifter is a D-A double brifter, the f. der. an Ultegra.
Thanx!