Longman

G'day mate, I'm just up the road in Rankin Park (near John Hunter). Are your pillar covers warped?
Can you see any staining inside where the water is running down? Might help pinpoint the exact location of the leak, as it has to get to the middle of the floor somehow. We've got more rain coming today/tomorrow, so would be a good thing to sort out soon!

You said all rubbers look good, does that include door rubbers and channels? Perhaps you could take off the plastic mouldings inside the pillar and see if you can see any water there.

Longman
Unsure mine look at bit out of place, we have the same car, just hate the water leaking into the back of the car, makes the car smell like **** and has a bad odor of we carpet i need to fix, boot is not a big issue really, just more it getting side i cant see any other place the water can get in the middle of the carpet, i think it would have to go down a pannel of some kind, and sit in the middle cant be comin from the door as its not wet around the door inside the car, i am in broadmeadow,