diff --git a/recipes/nemotron-3-nano-nvfp4.yaml b/recipes/nemotron-3-nano-nvfp4.yaml
index eaeb161..c835e45 100644
--- a/recipes/nemotron-3-nano-nvfp4.yaml
+++ b/recipes/nemotron-3-nano-nvfp4.yaml
@@ -25,12 +25,13 @@ defaults:
   host: 0.0.0.0
   tensor_parallel: 1
   gpu_memory_utilization: 0.7
-  max_model_len: 131072
+  max_model_len: 262144
 
 # Environment variables
 env:
-  VLLM_USE_FLASHINFER_MOE_FP4: 1
-  VLLM_FLASHINFER_MOE_BACKEND: "throughput"
+  VLLM_NVFP4_GEMM_BACKEND: "marlin"
+  VLLM_TEST_FORCE_FP8_MARLIN: "1"
+  VLLM_MARLIN_USE_ATOMIC_ADD: "1"
 
 # The vLLM serve command template
 command: |
@@ -44,6 +45,5 @@ command: |
      --reasoning-parser nano_v3  \
      --kv-cache-dtype fp8  \
      --enable-prefix-caching  \
-     --attention-backend flashinfer  \
      --load-format fastsafetensors  \
      --gpu-memory-utilization {gpu_memory_utilization}
diff --git a/run-recipe.py b/run-recipe.py
index 219c2d4..2cb41b7 100755
--- a/run-recipe.py
+++ b/run-recipe.py
@@ -470,17 +470,16 @@ def generate_launch_script(recipe: dict[str, Any], overrides: dict[str, Any], is
             if '--distributed-executor-backend' not in line
         ]
         command = '\n'.join(filtered_lines)
+
+    # Remove trailing backslash if present
+    if command.endswith('\\\n'):
+        command = command.rstrip('\\\n').rstrip()
     
     # Append extra args if provided (after --)
     if extra_args:
         # Join extra args and append to command
         extra_args_str = ' '.join(shlex.quote(a) for a in extra_args)
-        command = command.rstrip()
-        # Handle multi-line commands with backslash continuations
-        if command.endswith('\\'):
-            command = command.rstrip('\\').rstrip() + ' \\\n    ' + extra_args_str
-        else:
-            command = command + ' ' + extra_args_str
+        command = command + ' ' + extra_args_str
     
     lines.append("# Run the model")
     lines.append(command.strip())