Yeah, I had to make sure the mortals in question had whatever prerequisites.
One, a fighter, is getting "Sunder and Disjoin".
The second, a fiendish wizard, is getting "Increased Spell Resistance", which puts his SR at 45.
The third, a fighter/psion, is getting "Irresistible Blows".
The fourth, a half-elemental wizard, is getting "Hand of Death".
Any ideas on CR change with that info?