Howdy. Since I'm still pretty green on mapping I might put too much detail in explaining my issue. I'm happy to elaborate if something I say doesn't make sense. Currently I'm working on a midfight that's has a displacement for the ground. In designing the map I just work on one half and when I want to see how both sides look together I copy my work, transform it 180 degrees in the z axis and line it up with the original. Unless I've missed something though when it comes time to do the ground this could be a problem if I want it perfectly mirrored and leak free, as I can only adjust one side while needing to see what happens to both, and can't use the sew command because it could change both sides differently. TL: DR - When placing the mirror of a displacement next to the original how do you get it both leak free and symmetrical?