What's the knibley pin ?

I've heard some good ones, but that one is beyond me.

And, just saying, pull #1 plug and bump it till you get compression stroke, stick a screwdriver down the hole and feel for top dead center while you crank it by hand (very safe and pretty accurate) and you can then verify if your pointer and balancer mark lines up. It's free, take ten minutes, and verifying before you buy parts never hurts.