I'm learning any% SSG and I'm having trouble building the second portal. I get to the nether and at the spot that the route builds the portal to warp to the dungeon in the overworld. Every time I get there I end up warping to the overworld at the surface in the woods, in front of a little cave that leads to nowhere. So my question is: Does the exact position of the nether portal matter in terms of which corners are filled in with obsidian? Do I need to manually crate a new world with the seed every time? (I've been using the 'recreate' button thus far in the few runs i've done.)