I.  Chunks present in unfixed thumbnails after thumbnail unpacking.

MCKineChunk
MinBiasChunk

L1L2Chunk
L3Chunk
TMBTriggerChunk
-LumiInfoChunk

HistoryChunk

-CalDataChunk
CalNadaChunk
Calt4_25Chunk
CalQualityChunk

CftClusterChunk
SMTPosBCollectChunk
SMTPosDCollectChunk
SMTGlblBCollectChunk
SMTGlblDCollectChunk
SmtChipStatusChunk

CPSDigiChunk
FPSDataChunk

PDTHitChunk
MDTHitChunk
MSCHitChunk

*TrackCalChunk
*TrackCalJetChunk

*ThumbNailChunk:

CPSClusterChunk (CPSTmbObj)
FPSClusterChunk (FPSTmbObj)
VertexCollChunk (VtxTmbObj)
*ChargedParticleChunk (ChTmbObj, ChIsoTmbObj)
*VtxChLinksChunk (newly created by UnpThumbNailPkg)
*EMparticleChunk (EmTmbObj)
-MuonParticleChunk (MuTmbObj)
*TauChunk (TauTmbObj)
*JetChunk (JetTmbObj, LeBobTmbObj)
*MissingETChunk (MetTmbObj)
CalStatusChunk (CalStatusTmbObj)
FPDDigiChunk (FPDTmbObj)
LMDigiChunk (LMTmbObj)

* These chunks should be dropped and regenerated from scratch.
- These chunk may need updating.

II.  Fixing synopsis.

1. Standard initialization (geometry, calibration, history, configuration).

2. SAMManager.

3. ReadEvent.

4. Update LumiInfoChunk.

5. Unpack ThumbNailChunk.  No need to unpack: em, tau, jet, met.
Do unpack charged particles, muons, vertices.

6. Drop ThumbNailChunk, TrackCalChunk, TrackCalJetChunk and other
chunks listed above.  Keep ChargedParticleChunk and VtxChLinksChunk 
temporarily.

7. Make a reverse-engineered GTrackChunk from charged partgicels using
ChPartGTrackPkg.  For this we use the rcp option to simultaneously
make GTrackChLinksChunk to remember associations from the old charged
particles to GTracks.

8. Drop ChargedParticleChunk using process hook.

9. Fix CalDataChunk inconsistent gain
(<calunpdata CalUnpTmbToMC>).  This is the heart of fixing.

10. Calorimeter reconstruction (subset of <d0reco reco_cal>).  Omits
remaking Calt4_25Chunk.

11. Charged particle reconstruction using standard d0reco <d0reco
reco_chpart>).  Makes ChargedParticleChunk and TrackCalChunk.

12. Remake VtxChLinksChunk using VtxChLinksPkg to store associations
between remade charged particles and existing vertices.

13. Update MuonParticleChunk to reestablish links to new charged particles.

14. Redo other particle ids (em, tau, jet, met, links) using d0reco
standard rcps (not sure about links).  Jet reconstruction makes
TrackCalJetChunk and JetChunk.

15. Remake ThumbNailChunk.

16. Tag chunks and Write out thumbnail.