I found the time to change my RD cable tonight. There didn't seem to be any fraying of the cable in the STI body. However I found that the plastic ferrule in the barrel adjuster was broken off. This may explain some intermittent shifting noise I've been noticing. I have not removed the FD cable yet, but I don't expect to find anything odd in there as I rarely leave the big ring on this bike. Nevertheless, I'm glad I'm getting this done as I'm riding my first century next month and this simple maintenance item won't be something I'll regret not doing.
