Mine didn't come disco'd from the tranny itself, but from the points by the distributor where they actually vent.
You could take a minute to drop the tranny and t-case, and then let us know where it was....
I don't think that helped.
I'm pretty sure that the metal tubes they slide onto lay kinda flat, instead of sticking up. Kinda like a 90 degree bend out of the top of the boxes.

???You could drop the fluids and let it sit for a while empty, then take some air and blow up into it and see where the air comes out... (reverse flush, but with air...)