Thanks Masters Chinbok & michealg for your help. I am somewhat amazed at the level of interest generated by this subject, and it suggests to me that the neurals must have shone a little beacon of hope into many a forumite's calculations. You wizz kids with neural data on file must surely have some interesting anomolies within your data.

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"Not winning on a horse that came first is one thing.....Losing on a horse that didn't come first is something else entirely!!!"