THE FIX: Change interior water pipes so we can place them without an adjacent watered pipe.
EXPLANATION: Interior water pipes are the only plumbing structure that snaps to the center of a floor tile. Interior water pipes cannot be placed without a straight water pipe running to the exact center of the floor tile. But it is next-to impossible to set up a perfectly centered straight water pipe this way. So as a quick fix, let us place the interior water pipe first-- without the rule requiring a connected straight pipe filled with water-- and then run straight water pipe from the interior pipe, out to the exterior.
Thanks for reading.