Well it was ok, till i took the stat out an hour or so ago when i got in from work.

Thought id run it up and realised i didnt have much fuel, so topped the water back up till it settled, went 2 mile down the road and it was touching the red, cracking and popping like a gooden, got into fuel station, kicked the tank cap off with my foot, blew it off that hard it put a mark on the inside of the bonnet, water and steam everywhere, let it cool ( cashier in the garage thought it was on fire ) topped it and my water bottles back up and left, got home and it had seriously pressurised again.

Going to refit the stat 2moro seems to run better with that on, im still saying a piece of impellor is jammed in a hose somewhere.