I bled the system again today, hoping some air might have crept along the lines overnight, and we did get some more air out. As it isn't driving quite yet, I cant test how they stop, but I did put the rear of the car on axle stands and run it in gear. The brakes work the drums enough to stall the engine and stop the rear wheels, when it is running on tick over in first gear. The problem is there's still air in the system methinks, because the pedal gets progressively harder through pumping, and is too spongy. Is it a case of bleeding for a third time tomorrow to see if anymore air can be bled out, or is there nothing to do until I can drive it and see how effectively it stops?