OK, I've talked with Jim and Doug at TrackMaster and it's agreed it was bad data from Equibase (clearly even the last race 6:34 final time is incorrect). They've fed this back to Equibase and are waiting for a new data set and will generate a corrected file ASAP.
I'll post here when I know that an updated file is available.
If anyone can advise SartinAlums, I'm sure those readers will be interested.
Ted
P.S. If anyone wants to give RDSS a go, just write me (ted@artofpace.com)