I've recently been tanking ICC 10 for my guild. We attempted Deathbinger Saurfang tonight with myself and a Paladin tank. I would initially start aggro and have the Pally taunt off me when I got Rune of Blood debuff. My issue is that sometimes when it's my turn to taunt Saurfang will not turn to me and stay on the Pally. I'd say this happens 1/5 tries. Omen shows me on top threat when I taunt yet it still doesn't matter. Any suggestions?