first thing that happened with my very first build is this.
I was holding the engine in the frame trying to decide on the best position for mounting it . Well it seemed to sit in the frame fine so i kinda let go of it to reach for my beer and a second later the dang thing flopped out and hit directly on top of the plug wire I had in the plug and pulled the wire out of the cdi also. I thought I was screwed. So i just removed the entire boot and screwed it back into the CDI and used an old wing nut and wrapped the wire around the head of the spark plug. Still works to this day, no fancy boot or wires for my cheap ride