Think it needs and edge* more than a tweak, as most factors/rules you have are looked at by a lot of punters - just my humble opinion. I'd consider tweaking form, sex and also weight criteria, and disrgard conditions () but that's my research, it is different for others.

With a few tweaks I get:

1,123
204 Winners
18% S/R
+ 142 units
+ 13% POT
Av Div 6.20

All sexes
2,524
377 Winners
15% S/R
-70 units
-3% POT
Av Div 6.51


Tweaks include:
1. Lower Weight
2. Geldings only*
3. lower age
4. Equal or up in weight
5. Prize money criteria
6. Metro run last start
7. Leave Adelaid & Brisbane Racing alone

* Possible Edge - Chrome has mentioned this previously


Including another sex "type"

1,186
218 Winners
18% S/R
+ 175 units
+ 15% POT
Av Div 6.24

__________________
Stix
.......Giddy Up..... !!