The outer casing cracking is a common fault as you say , I found a break in the outer cable just above the bent in the cover at the brake drum .I soaked the area with ACF50 and then sealed it using plumbers tape .
This was 2 years ago and if I have stopped the inner cable from rusting it should not fail . I also try to lub the cable from the top .
Likewise. I used denso tape and that was almost 4 years ago. A lot easier than replacing the cable...only to see it crack again!
