give it a little while, you only posted this a couple hours ago, someone will help you. I myself have never installed a chariot head, but im guessing you should figure out where those orings go, i dont understand why you would even try to install it with extra parts still in the bag. Would you start your engine with parts still on the bench? Sorry to sound like a dick, but thats just my opinon, unless he gives ya a couple spares, which i highly doubt!
Cody