The record types are different in that type '0' has 50 fields, type '1' has 22 fields, type '2' has 11 fields. The first 5 fields of each record are common, with field 5 being the record type (0|1|2). There is no binary data in the records.

I am only interested in one type at a time, and have been sucessfully getting that until now with WHERE type = 1.