We never ran Chris King headsets. We either bought the 4130 cr-mo double thick bottom cup or a put stainless banjo clip on the bottom cup. A $20 solution that worked better than some aluminium setup. If I were still riding I'd just run a $50 Solid Headset from my buddies in Sac:

http://www.danscomp.com/301046.php?cat=PARTS

My bike (T1) has an integrated headset that cost Trek maybe $1.75 - I've never had it apart. Doubt I ever will.