Basically what it says in the title. I'm not sure if this is an issue with how I have the generation set up or an issue with the mod itself, but I can't seem to get a true Voronoi skylands world to generate. There's always a layer of blocks at y=0 and biomes generate down there as well. I went through the wiki but couldn't find anything that would help. Any recommendations for how I can get a world like this to generate properly?

Can you share the settings you're using?

If you want to use the Skylands preset with other biome generators, it would be best to copy and set aside the biome settings you want to use, select the Skylands preset, then paste the biome settings in.