Ok mate, here is the system rules for you:

Saturday Metro Bris, Adel, Perth
Beaten Favourite Last Start
Won At the Course
Price $2-$8 - no odds on
Metro Run Last Start
Tab Number 1-8
Race Distance - 1600+
Exclude All Races With First Up Horses (obviously there are no bets on first up horses)
Exclude All Fillies/Mares/Fillies & Mares Races

These filters are pretty straight forward and should allow for repeatable results but it would be a good idea to test for a while, good luck with it.

Cheers,

Mat.