Hi! I'm not familiar with Godot, but it should be possible to change the grid cell size in the scene to make it match. Please send me some screenshots and more details to my email of the mismatch. And if you cannot set up the grid to match the dimensions of the models in Godot, then please calculate the new scale needed to match the cell size you need for the floor piece. In that case I'll provide a suitable scale of the models to make this convenient to you. :)