Tileset Residue

[Occorru]

Ive been having this horrible problem with Postality Knights. You know that white part around a bunch of the smaller tiles? Well it stays when I put it on my map. So that whenever I test play theres this black stuff around those tiles that ruin the scene. Does anyone know how to transparent the white stuff surround the smaller tiles on Postality Knights?

[Tsunokiette]

Um yes, put those tiles on a layer different than layer 1, thank you and good night.