I had the same problem with the 'c' sneak key so I re-mapped it over the sprint key (removed the sprint hotkey) and selected the double-tap jog for sprint option.
Fences are easy,
Face fence, hold 'e' down (or the key you have mapped to open doors) until they are climbing over.
May need to try it a few times as some times the character will fail and fall back down on the original side.