looks like a blast!
Tell me, what sort of order were the breech plugs in, particularly the thread, its something that worries me with a muzzleloader, more so than any pitting.

As an aside I cut wads from beer mat and engineers pure wool felt.
I dip the felt in melted lube, and glue a beer card wad to top and bottom.
That way its just powder,composite wad, shot and overshot card.

GDU