diff --git a/jambo/parser/object_type_parser.py b/jambo/parser/object_type_parser.py
index d3c27ca..92b6a9f 100644
--- a/jambo/parser/object_type_parser.py
+++ b/jambo/parser/object_type_parser.py
@@ -46,9 +46,10 @@ class ObjectTypeParser(GenericTypeParser):
                 type_parsing.model_validate(example) for example in example_values
             ]
 
-        if name in ref_cache:
+        if name in ref_cache and isinstance(ref_cache[name], type):
             warnings.warn(
-                f"Type '{name}' is already in the ref_cache and will be overwritten.",
+                f"Type '{name}' is already in the ref_cache and will be overwritten."
+                " This may indicate a circular reference in the schema or a collision in the schema.",
                 UserWarning,
             )
         ref_cache[name] = type_parsing
diff --git a/jambo/schema_converter.py b/jambo/schema_converter.py
index 6358786..1ba52d6 100644
--- a/jambo/schema_converter.py
+++ b/jambo/schema_converter.py
@@ -26,14 +26,28 @@ class SchemaConverter:
         self,
         schema: JSONSchema,
         ref_cache: Optional[RefCacheDict] = None,
+        without_cache: bool = False,
     ) -> type[BaseModel]:
         """
         Converts a JSON Schema to a Pydantic model.
+        This is the instance method version of `build` and uses the instance's reference cache if none is provided.
+        Use this method if you want to utilize the instance's reference cache.
+
             :param schema: The JSON Schema to convert.
             :param ref_cache: An optional reference cache to use during conversion.
+            :param without_cache: Whether to use a clean reference cache for this conversion.
             :return: The generated Pydantic model.
         """
-        return self.build(schema, ref_cache or self._ref_cache)
+        local_ref_cache: RefCacheDict
+
+        if without_cache:
+            local_ref_cache = dict()
+        elif ref_cache is None:
+            local_ref_cache = self._ref_cache
+        else:
+            local_ref_cache = ref_cache
+
+        return self.build(schema, local_ref_cache)
 
     @staticmethod
     def build(
@@ -43,7 +57,6 @@ class SchemaConverter:
         Converts a JSON Schema to a Pydantic model.
             :param schema: The JSON Schema to convert.
             :param ref_cache: An optional reference cache to use during conversion, if provided `with_clean_cache` will be ignored.
-            :param with_clean_cache: Whether to use a clean reference cache for this conversion. Set to rue due to API compatibility. Will be set to False in future versions.
             :return: The generated Pydantic model.
         """
         if ref_cache is None: