[1.16.5] Help with Remove World Features and custom WorldCarver

[Luis_ST]

okay as the title says I have problems with some world features
I am currently creating a custom dimension that will expand the overworld downwards
(because the current save format, as I know, does not allow the world to be enlarged, so this is the only way i that is also possible to do this).

1. does the vanilla carvers only replace stone? since these no matter how I add them to the dimension, they do not generate.
2. if 1. yes how do i create my own caves, or can I change the replace block for vanilla's?
3. I also want to change a few of the vanilla ores, which is why I tried to replace the features with BiomeLoadingEvent,
   but when I try to remove it, nothing happens, this is the code of my event:

   	@SubscribeEvent(priority = EventPriority.NORMAL)
   	public static void biomeLoading(BiomeLoadingEvent event) {
   		
   		ResourceLocation biomeName = event.getName();
   		Category category = event.getCategory();
   		BiomeGenerationSettingsBuilder generationBuilder = event.getGeneration();
   		
   		if (category == Category.THEEND) {
   			
   		} else if (category == Category.NETHER) {
   			
   		} else {
   			
   			generationBuilder.getFeatures(Decoration.UNDERGROUND_ORES).removeIf((supplier) -> {
   				ConfiguredFeature<?, ?> feature = supplier.get();
   				if (feature.config instanceof OreFeatureConfig) {
   					OreFeatureConfig oreConfig = (OreFeatureConfig) feature.config;
   					if (oreConfig.state.getBlock() == Blocks.COAL_ORE) {
   						return true;
   					} else if (oreConfig.state.getBlock() == Blocks.IRON_ORE) {
   						return true;
   					} else if (oreConfig.state.getBlock() == Blocks.GOLD_ORE) {
   						return true;
   					} else if (oreConfig.state.getBlock() == Blocks.LAPIS_ORE) {
   						return true;
   					} else if (oreConfig.state.getBlock() == Blocks.REDSTONE_ORE) {
   						return true;
   					} else if (oreConfig.state.getBlock() == Blocks.DIAMOND_ORE) {
   						return true;
   					}
   				}
   				return false;
   			}); 
   			
   		}
   		
   	}

a few other questions about the world features:

1. my dimension is completely made of stone (custom, 0-256) but still generate mineshafts far down in the world,
   what is the value of the generation height based on i have already looked at the feature and found something with the sea level but this has not changed anything

thanks for replies

Edited May 7, 2021 by Luis_ST

[Luis_ST]

1 hour ago, Luis_ST said:

my dimension is completely made of stone (custom, 0-256) but still generate mineshafts far down in the world,
what is the value of the generation height based on i have already looked at the feature and found something with the sea level but this has not changed anything

small update: after testing a bit, I found that the mineshaft generation is dependent on the SeaLevel (mineshafts generate below the SeaLevel),
I fixed my problem by setting the SeaLevel to the maximum height of the dimension

[Luis_ST]

update: I also solved the problem with the caves,
but I still have no idea what I'm doing wrong with the BiomeLoadingEvent