Nevermind, I figured it out. I'd done everything I was supposed to EXCEPT tell my object to use the new tuning. When I tested previously it was still using the unfinished EA urinal code.
@SimGuruModSquad Could you please pass onto the game devs how much the community actually wants urinals and public toilet stalls? This far into the game's lifespan and it still feels like some of the very basics are still missing. That and we REALLY need a normal sized telescope and microscope for our Sims that AREN'T mad scientists but still take an interest in the Sim world around them.