I don't want to flame your thread here; a good high energy ignition system will go a long way in making sure all your fuel is burnt well here. HEI swap comes to mind stock plug should do well in your application.
Dont worry about it, Im thinking my ignition system is lacking anyways. They had to back my engine off at 6k at the Dyno, because it was falling off. Due to the ignition system not keeping up. I've been debating about Trail Beasts HEI set up actually.