thanks for all the commens guys.
Been playing a bit of Just Cause 2 and it does get pretty toasty in there.....tubes are soft and rads/connectors quite warm to the touch. Hopefully bringing in a bit of airflow from the top fan will help, plus adding the single rad at the back (120mm with 140mm fan with adaptor) would help a little bit.
Just wondering if any extra cooling performance could be had by changing the fans ? They're low RPM to match the EK rads....or do I need something else ???
I'll definiately change the tubing so from the motherboard it goes straight into the GPUs, seems crazy to have all that extra tubing :/