1. Remove chair/cot cover.
2. Locate damaged endcap.
3. Pull the plastic endcap out until the shock cord is visible.
4. Remove the knotted end of the shock cord from the damaged endcap and dispose of it.
5. Take your new plastic endcap and push the knotted end of the shock cord inside of it.
6. Push the new plastic endcap into the pole.