Quote:
Originally Posted by LakeCleElum
I have neglected to install parts "B" and "C" before.

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Closing the loop.
The problem is that the drain is placed unusually high up on the wall, so that the piece that comes out from the wall is several inches higher than the outlet of the P trap. The sink is thus set up with a straight piece connected to nut "D" and slip fitting into the outlet with another nut/compression fitting there. Since the outlet isn't designed for a slip fitting, this sucks.
I secured the sink to the wall so it doesn't move, put everything back together, and slathered the outside of all the joints with silicone adhesive. It is a hack job, but seems to be water tight. If this fails, I will take look171's suggestion and rebuild it with plastic pipe that I will glue together. Sigh.