Its ok. I watched the video again for the 3rd time and I watched it really close and what i said bout the rocker arm jumping i was wrong.
With that said. If you follow the spark plug wires back to the distributor cap there should be an extra wire on there. Pull off the extra wire. That wire goes to your coil. It wont fire off with the wire pulled.
How tight were the rods to the crank. Was there any play at all between the rod and crank?