Pulled of my orginal plug wires off (low mile car.....under 10k) and one of the wire boots that came off the coil pack had some rust inside of it.....the metal terminal connection inside the boot looked a little corroded. A little rust dust was on the coil pack from that particular wire was what lead me to check the wires. Anything I can or should do about this condition?? Is the wire bad? All other wire boots looked fine except the one. Because car seems to run & drive fine.