Wonder if it has to do with his whole grounding write up. But since I read that, I run a ground from engine to chassis. Might help, might not. But it doesn't hurt.
My nology hot wires also have ground straps to the head.
I went to walmart and got a lawn mower starter cable. Was like 8 bucks, I think like 2 or 4 gauge with 2 nice eyelets.