Occasional inspection of rudder cables is not a bad idea. Some decades ago, I severed my rudder cable at a point where it passed along the cockpit in a tube in the sidewall with an errant screw when installing a boom mike. When the repair shop pulled out the cable, they found almost identical damage a few feet back in the fuselage caused by the factory! I had been flying it for over a year with just a couple of strands left.

Mike