After a little sandblasting and paint for the tin parts, reassembly:
These tin pieces are held on with 7 screws and 5 pop rivets. The rivets are aluminum and drill out easily. These screws have blunt ends, as they poke through on the outer side. I used some RTV silicon to seal the tin.
Next, work on cores. I had 4 decent cores, 3 of them re-pops:
I came up with this back yard cleaning system-a bucket, swamp cooler pump, some heater hose and harsh chemicals:
I ran this for 4 or 5 hours on the re-pops and a full 10 on the original. I think they came out pretty clean:
