I was a stupid

code/__DEFINES/storage.dm

@@ -74,13 +74,15 @@ GLOBAL_LIST_INIT(default_weight_class_to_volume, list(
 
 // max_weight_class for storages
 //
+#define MAX_WEIGHT_CLASS_S_CONTAINER WEIGHT_CLASS_SMALL
 #define MAX_WEIGHT_CLASS_M_CONTAINER WEIGHT_CLASS_NORMAL
 #define MAX_WEIGHT_CLASS_BACKPACK WEIGHT_CLASS_BULKY
 #define MAX_WEIGHT_CLASS_DUFFEL WEIGHT_CLASS_HUGE
 
 // max_volume for storages
-#define STORAGE_VOLUME_CONTAINER_M (DEFAULT_VOLUME_NORMAL * 8) //4 small items
-#define STORAGE_VOLUME_SATCHEL (DEFAULT_VOLUME_NORMAL * 24) //4 normal items
-#define STORAGE_VOLUME_BACKPACK (DEFAULT_VOLUME_NORMAL * 36) //6 normal items, or 3 bulky items
-#define STORAGE_VOLUME_DUFFLEBAG (DEFAULT_VOLUME_NORMAL * 72) // 3 huge items, or 6 bulky items
-#define STORAGE_VOLUME_BAG_OF_HOLDING (DEFAULT_VOLUME_NORMAL * 54) //1.5X backpack
+#define STORAGE_VOLUME_CONTAINER_S DEFAULT_VOLUME_NORMAL //3 small items
+#define STORAGE_VOLUME_CONTAINER_M (DEFAULT_VOLUME_NORMAL * 2) //6 small items
+#define STORAGE_VOLUME_SATCHEL (DEFAULT_VOLUME_NORMAL * 4) //4 normal items
+#define STORAGE_VOLUME_BACKPACK (DEFAULT_VOLUME_NORMAL * 6) //6 normal items, or 3 bulky items
+#define STORAGE_VOLUME_DUFFLEBAG (DEFAULT_VOLUME_NORMAL * 12) // 3 huge items, or 6 bulky items
+#define STORAGE_VOLUME_BAG_OF_HOLDING (DEFAULT_VOLUME_NORMAL * 9) //1.5X backpack