Forgot to post this. I was going to, but I had to forget. Well anyways, here you go. https://www.youtube.com/watch?v=SWM09DJx2OY Really simple to do, make a schematic and import it to an empty world then replace. O. o Thought I'd share this if you guys haven't found this yet. Finally remembered where I found this from. http://www.xpgamesaves.com/topic/77577-tunnel-world-modded-gamesave/ One of the links in his post.