diff --git a/engines/python/setup/djl_python/transformers_neuronx_scheduler/optimum_neuron_scheduler.py b/engines/python/setup/djl_python/transformers_neuronx_scheduler/optimum_neuron_scheduler.py
index 06dd2ee0e..5f62fe5f7 100644
--- a/engines/python/setup/djl_python/transformers_neuronx_scheduler/optimum_neuron_scheduler.py
+++ b/engines/python/setup/djl_python/transformers_neuronx_scheduler/optimum_neuron_scheduler.py
@@ -177,8 +177,9 @@ def make_generations(
             slot_request.slot.clear()
         return generation, finish_reason
 
-    def _generate_token(self, inputs: GenerationInputs,
-                        prefill: Optional[bool]) -> List[Generation]:
+    def _generate_token(self,
+                        inputs: GenerationInputs,
+                        prefill: Optional[bool] = None) -> List[Generation]:
         """Prepare inputs for batching strategy
         Args:
             inputs (GenerationInputs): inputs tokenized tensor values
diff --git a/engines/python/setup/djl_python/transformers_neuronx_scheduler/slot.py b/engines/python/setup/djl_python/transformers_neuronx_scheduler/slot.py
index 751eaa58f..c4bcbbec6 100644
--- a/engines/python/setup/djl_python/transformers_neuronx_scheduler/slot.py
+++ b/engines/python/setup/djl_python/transformers_neuronx_scheduler/slot.py
@@ -141,7 +141,7 @@ def assign(self, request: Request, generation_config: GenerationConfig,
         if self._generation_config.do_sample:
             self._generation_config.temperature = param.get("temperature", 0.9)
             self._generation_config.top_k = param.get("top_k", 0)
-            self._generation_config.top_p = param.get("top_p", 1.0)
+            self._generation_config.top_p = param.get("top_p", 0.9)
             self._generation_config.typical_p = param.get("typical_p", 1.0)
             self.seed = int(param.get("seed", 0))
 
diff --git a/tests/integration/tests.py b/tests/integration/tests.py
index ae9e73e24..d2c042a4a 100644
--- a/tests/integration/tests.py
+++ b/tests/integration/tests.py
@@ -727,30 +727,6 @@ def test_gpt2_quantize(self):
             r.launch(container='pytorch-inf2-1')
             client.run("transformers_neuronx gpt2-quantize".split())
 
-    def test_opt_1_3b(self):
-        with Runner('pytorch-inf2', 'opt-1.3b') as r:
-            prepare.build_transformers_neuronx_handler_model("opt-1.3b")
-            r.launch(container='pytorch-inf2-6')
-            client.run("transformers_neuronx opt-1.3b".split())
-
-    def test_gpt_j_6b(self):
-        with Runner('pytorch-inf2', 'gpt-j-6b') as r:
-            prepare.build_transformers_neuronx_handler_model("gpt-j-6b")
-            r.launch(container='pytorch-inf2-6')
-            client.run("transformers_neuronx gpt-j-6b".split())
-
-    def test_pythia(self):
-        with Runner('pytorch-inf2', 'pythia-2.8b') as r:
-            prepare.build_transformers_neuronx_handler_model("pythia-2.8b")
-            r.launch(container='pytorch-inf2-2')
-            client.run("transformers_neuronx pythia-2.8b".split())
-
-    def test_bloom(self):
-        with Runner('pytorch-inf2', 'bloom-7b1') as r:
-            prepare.build_transformers_neuronx_handler_model("bloom-7b1")
-            r.launch(container='pytorch-inf2-2')
-            client.run("transformers_neuronx bloom-7b1".split())
-
     @pytest.mark.parametrize("model",
                              ["tiny-llama-rb-aot", "tiny-llama-rb-aot-quant"])
     def test_partition(self, model):