i didnt see your leaks (because of post req) before I found this, so this is yet another noob figuring out this noob glitch lol, 3rd attempted method i thought of worked :)
i did it (i think) the simple way maths post (im guessing) says
[hide=100]using a stall on entering poh (building mode) and closing by summoning a familiar to close and enter building mode[/hide]