You have to mount them correctly to get them not to bind. "Lay" them in without kinking or stressing, and anchor the outer jacket properly "lined up" with the cable pull. It helps once it is 'layed in" to tie the jacket to handly adjacent harness anchors, etc with zip ties
To prevent rust, BEFORE you install it, and depending on "what it was on" (tractor, 4x4, etc) I sometimes inserted the cable inside something like fuel hose or a couple layers of heat shrink, pulled the innerd's out and greased it heavily
