Gene tape will not weaken the push cable if you are just using it for footage reference or to mark a spot. However what a lot of guys do is tape a kinked or broken push cable together so the wires do not get wet as a temporary fix and what can happen is in the ridgid push cable if you continue to use your push cable when the wires are exposed it can ruin the ground shield wire as far as the water can absorb up the cable and this has caused a lot of customers to lose a lot of push cable. As far as the Kevlar the Kevlar braided thread only runs through some of the older black style push cables. Nowthe shield ground wire runs where that was. As far as ordering any of the old push cable I have not had anyone request it but i am pretty sure it is discontinued.