I climbed up to the roof, stuck a hose in the vent pipe to fill the drain lines with water and there were leaks. Like the pollen dripping from the anthers on this wonderful smelling lily, there were drips of water leaking from the pipes. At least there were only four leaks and not the six dripping anthers this lily has.
The inspection was cancelled.
So I cut out all the bad parts. That happens to the wild flowers often enough just because there are so many that take up space for other desired things. In this case the desired thing would be for pipes that don't leak.
I looked inside these cut pipes and they were all very well connected. There was no reason they should be leaking. None that I could see. It is torment.
And tomorrow we will start putting it all back together again.
There is good news. The water lines that will deliver water to the leaky drains were all perfectly fine and held pressure to 70 psi with nary a drip.