Other people go to the pub on Friday night but I've been reassembling the NSR, after I started it up I notice a leak from the the coolant pipe that feeds the front barrel, and the thermostat housing. It doesn't have visible splits, but it must have small cracks that leak when the system goes under pressure.
So I feel more posting in the wanted section coming on....

Should there be a gasket in the thermostat housing? it leaks around the join...
Thanks again to the people on this forum who helped me with parts etc for my NSR. And if anyone has a hose that goes from the thermostat to the front barrel please let me know.

Cheers, Mat.