Murphy's Law of Self Building - Part 3

We need the digger to mix the 35 or so cubes of concrete we need for the floors. We need a tractor to fix the pan mixer to and turn the drum. We have neither - a major break down with the digger - actually a new part has failed and we have no idea when we can get the repair done - and the farm needs the tractor because their spare parts were late arriving for getting the topping done. It has rained again for the last three days and heavily enough to stop us in our tracks.
Very demoralising but the guy on Grand Designs Australia last week was a total inspiration so we will just keep going.
We have a Plan B (unlike the government) but have been knocked back another fortnight.