It is really easy.. YouTube video. Replacement eye. I keep old broken rods in the corner for parts. Razor knife. Needle nose , Thread. Two part epoxy. Lighter. You can get fancy but I don’t, if it’s a two foot eye I only cut the thread on one side. Towards the butt. Pull the bad eye out, stick the new eye in. Wrap the foot with thread. Cover with epoxy. Heat slightly. Keep spinning rod and blow on epoxy till it get firm. Your done. On single foot eyes pull old eye out of thread. Make sure new one fits in the hole left. Add a little epoxy to the foot, push in . Let dry. Easy!