diff --git a/status_cake_exporter/_status_cake.py b/status_cake_exporter/_status_cake.py
index d943d08..deea8b0 100644
--- a/status_cake_exporter/_status_cake.py
+++ b/status_cake_exporter/_status_cake.py
@@ -5,7 +5,7 @@
 
 from statuscake import ApiClient, Configuration
 from statuscake.apis import MaintenanceWindowsApi, UptimeApi
-from statuscake.exceptions import ApiValueError, ForbiddenException
+from statuscake.exceptions import ApiValueError, ForbiddenException, ApiException
 from typing_extensions import NotRequired, TypedDict
 
 logger = logging.getLogger("status_cake")
@@ -223,6 +223,14 @@ def get_test_history(self, test_id: str) -> list[dict[str, Any]]:
             response = uptime_api.list_uptime_test_history(test_id, **params)
             return response
 
+        except ApiException as e:
+            if e.status == 429:
+                backoff=int(e.headers["x-ratelimit-reset"])
+                logger.debug(f"Hit statuscake API rate limit. Waiting {backoff} seconds before retrying...")
+                sleep(backoff)
+                return uptime_api.list_uptime_test_history(test_id, **params)
+
+            raise e
         except Exception as e:
             logger.error(f"Error while fetching test history: {e}")
             raise e
diff --git a/status_cake_exporter/_test_collector.py b/status_cake_exporter/_test_collector.py
index 79227d4..39a60ac 100644
--- a/status_cake_exporter/_test_collector.py
+++ b/status_cake_exporter/_test_collector.py
@@ -78,8 +78,7 @@ def transform(
 
     for i in tests:
         logger.debug(f"Transforming test id: {i['id']}")
-        t.append(
-            {
+        test = {
                 "test_id": str(i["id"]),
                 "test_type": str(
                     i["test_type"]
@@ -88,12 +87,14 @@ def transform(
                 "test_url": i["website_url"],
                 "test_status_int": get_uptime_status(i["status"]),
                 "test_uptime_percent": str(i["uptime"]),
-                "test_performance": str(i["performance"]),
                 "maintenance_status_int": get_test_maintenance_status(
                     i["id"], tests_in_maintenance
                 ),
             }
-        )
+        
+        if hasattr(i, 'performance'):
+            test["test_performance"]= str(i["performance"])
+        t.append(test)
         logger.debug(f"Transformed test id: {i['id']}")
 
     logger.debug(f"Test transformation complete. Returning {len(t)} metrics")
@@ -179,7 +180,8 @@ def collect(self):
             )
 
             for i in metrics:
-                performance_gauge.add_metric([i["test_id"]], (i["test_performance"]))
+                if 'test_performance' in i.keys():
+                    performance_gauge.add_metric([i["test_id"]], (i["test_performance"]))
 
             yield performance_gauge