Mattp, You are WRONG!!! The piece for that spot is a #8 Black Diamond Hexcentric. There is a slot into which one fits perfectly, like the slot (or hexes?) were made for it. It fits so perfectly that the hex will fit in only one orientation. It fits so perfectly that I would not recommend taking some other brand hex up there.
I believe you should include this vital information on your topo.
And Mr. Whitelaw, are you reading this?
You are both wrong. All you need are draws and a pair of brass ones...