Use The FOX helicopter swivels get some .5mm silicone from esp and the .5mm beads form esp on the back it shows you the correct way of using it. This in my opiniion is the best way to use Lead core.
You could buy the FOX helicopter pack which is very very safe, but does cost.
Going back to the esp rig...the procedure is strip off the leadcore inside.. about 3inches. push on the .5mm silicone only about 1.5 cm, then push on the esp.5mm bead over the silicone. Then put on your swivel which your rig attaches to, then put on a bigger bead between .7mm and .9mm then tie on your Lead. Use a needle not at the top to connect the main line, again if you buy the esp a diagram shows the best way of doing it. Job done safe rig in my opinion.
