Best way to flush engine after rocker arm failure?

My excitement has been crushed. Got a set of the new Trick Flow heads for the LA.

Used the Harland Sharp rocker arms and new ARP bolts for the stands. Measured the push rods and got new Smith Bros. to that length. Installed all the new parts and torqued to spec and adjusted the lash to the spec.
The car started and ran well in the garage and Things looked good.
When for a drive and the noise started about a block away, I turned around and by the time I got home the noise got worst. Had good oil pressure at the end of this ordeal.
I pulled the valve covers off and found that the ARP bolts had backed off on the rocker shafts.
This damaged three of the rockers and one of the push rods.
I cleaned up the heads and valve springs with solvent and compressed air and a lot of paper towels.
I am now draining oil and will change the filter ( K&N HP2004)

Like the header says what else should I do or be looking at? I had never had a failure like this before and want to make sure I have done the best.