Well after playing with the c clip some more, I found a pretty good place for it. I was still missing power at WOT (backfiring, losing power). The exhaust nut was loose (end wasn't on, loss of pressure) and my spark plug wasn't actually very tight. Seems to run pretty good now
However, while I was doing the spark plug, I pulled the boot off and the spring fell out somewhere along the line
Can I just buy any old spark lead and screw it on?