I received the NerdLocks and Ultra Copper Permatex this afternoon.

After cleaning bolts, holes, and making sure everything was flat, I re-assembled with a thin ally gasket I made from flashing. Gasket was Ultra Coppered in. Tightened the bolts to about 100 in-lbs (per Todd).

Permatex takes 24 hours to fully cure so I should be set for the weekend. Up to now, I couldn't get 3 flights without the header loosening. The evidence on my set-up was lots of oil residue on the bottom of the stab (there should be none if the header holds tight)