I don't believe I have it anymore, I stupidly deleted it, but I think I can make another. It's no big deal though, the workaround I came up with arguably is the better option anyways.
Also, concerning customnpc's; normal entities not from customnpc's do not have a problem with structure spawning. From testing they stay in place and behave normally.
Custom npc's, regardless of their AI movement configuration, will always move to or spawn in the bottom corner of the selection. To make sure I put them in standing mode, and when the structure spawned they spawned in that location and suffocated to death soon after. My guess is that the AI rules written in customnpc's are thinking that the spawn location of the structure is the spawn location of the npc's since it is technically placing them.