diff --git a/slime/backends/megatron_utils/model_provider.py b/slime/backends/megatron_utils/model_provider.py
index 8174c7ac5..afc8ad0b4 100644
--- a/slime/backends/megatron_utils/model_provider.py
+++ b/slime/backends/megatron_utils/model_provider.py
@@ -33,6 +33,8 @@ def __init__(
         self.sequence_parallel = config.sequence_parallel
         if self.sequence_parallel:
             self.weight.sequence_parallel = True
+            if bias:
+                self.bias.sequence_parallel = True
 
         self.weight.data.normal_(mean=0.0, std=0.02)
         if bias:
diff --git a/slime/backends/sglang_utils/arguments.py b/slime/backends/sglang_utils/arguments.py
index 9755a43bb..c76946166 100644
--- a/slime/backends/sglang_utils/arguments.py
+++ b/slime/backends/sglang_utils/arguments.py
@@ -33,6 +33,7 @@ def add_sglang_arguments(parser):
     Add arguments to the parser for the SGLang server.
     """
     parser = add_sglang_router_arguments(parser)
+    parser.set_defaults(router_balance_abs_threshold=10, router_balance_rel_threshold=1.2)
     parser.add_argument("--sglang-server-concurrency", type=int, default=512)
 
     old_add_argument = parser.add_argument