i'll start with this...
the blue line is the intended pathway (though the player can go the other way).
the red marks are the warp portals that are working properly.
the green marks are the ones that are having the HOM problem.
the letters indicate how the portals connect.
Essentially this is limiting the player to going a single direction.
I've tried rotating the planes around, and that just causes both the red and green portals to have the HOM effect. i've also moved them all to the same level (vertical location) now, with no change...
any ideas, guys?