diff --git a/launch-cluster.sh b/launch-cluster.sh
index bc47fc8..8433415 100755
--- a/launch-cluster.sh
+++ b/launch-cluster.sh
@@ -24,6 +24,8 @@ DAEMON_MODE="false"
 CHECK_CONFIG="false"
 ACTION="start"
 CLUSTER_WAS_RUNNING="false"
+MOD_PATH=""
+MOD_TYPE=""
 
 # Function to print usage
 usage() {
@@ -34,6 +36,7 @@ usage() {
     echo "  --eth-if        Ethernet interface (Optional, auto-detected)"
     echo "  --ib-if         InfiniBand interface (Optional, auto-detected)"
     echo "  --nccl-debug    NCCL debug level (Optional, one of: VERSION, WARN, INFO, TRACE). If no level is provided, defaults to INFO."
+    echo "  --apply-mod     Path to directory or zip file containing run.sh to apply before launch"
     echo "  --check-config  Check configuration and auto-detection without launching"
     echo "  -d              Daemon mode (only for 'start' action)"
     echo "  action          start | stop | status | exec (Default: start)"
@@ -49,6 +52,7 @@ while [[ "$#" -gt 0 ]]; do
         --name) CONTAINER_NAME="$2"; shift ;;
         --eth-if) ETH_IF="$2"; shift ;;
         --ib-if) IB_IF="$2"; shift ;;
+        --apply-mod) MOD_PATH="$2"; shift ;;
         --nccl-debug)
             if [[ -n "$2" && "$2" =~ ^(VERSION|WARN|INFO|TRACE)$ ]]; then
                 NCCL_DEBUG_VAL="$2"
@@ -96,6 +100,41 @@ if [[ -n "$NCCL_DEBUG_VAL" ]]; then
     esac
 fi
 
+# Validate MOD_PATH if set
+if [[ -n "$MOD_PATH" ]]; then
+    if [[ ! -e "$MOD_PATH" ]]; then
+        echo "Error: Mod path '$MOD_PATH' does not exist."
+        exit 1
+    fi
+    
+    if [[ -d "$MOD_PATH" ]]; then
+        if [[ ! -f "$MOD_PATH/run.sh" ]]; then
+             echo "Error: Mod directory must contain 'run.sh'."
+             exit 1
+        fi
+        MOD_TYPE="dir"
+    elif [[ -f "$MOD_PATH" && "$MOD_PATH" == *.zip ]]; then
+        # Check zip content using unzip if available, else python
+        if command -v unzip &> /dev/null; then
+            if ! unzip -l "$MOD_PATH" | grep -q "run.sh"; then
+                 echo "Error: Mod zip file must contain 'run.sh'."
+                 exit 1
+            fi
+        else
+             # Fallback to python for checking zip content
+             if ! python3 -c "import zipfile, sys; sys.exit(0 if 'run.sh' in zipfile.ZipFile(sys.argv[1]).namelist() else 1)" "$MOD_PATH"; then
+                 echo "Error: Mod zip file must contain 'run.sh'."
+                 exit 1
+             fi
+        fi
+        MOD_TYPE="zip"
+    else
+        echo "Error: --apply-mod must be a directory or a .zip file."
+        exit 1
+    fi
+    MOD_PATH=$(realpath "$MOD_PATH")
+fi
+
 # --- Auto-Detection Logic ---
 
 # Source autodiscover module
@@ -249,6 +288,92 @@ check_cluster_running() {
     fi
 }
 
+# Apply Mod Function
+apply_mod_to_container() {
+    local node_ip="$1"
+    local container="$2"
+    local is_local="$3" # true/false
+
+    local mod_name=$(basename "$MOD_PATH")
+    if [[ "$MOD_TYPE" == "zip" ]]; then
+        mod_name="${mod_name%.*}"
+    fi
+
+    echo "Applying mod '$mod_name' to $node_ip..."
+
+    # 1. Copy mod to node (if remote)
+    local target_mod_path=""
+    if [[ "$is_local" == "true" ]]; then
+        target_mod_path="$MOD_PATH"
+    else
+        # SCP to remote
+        local remote_tmp="/tmp/vllm_mod_pkg_$(date +%s)"
+        echo "  Copying mod package to $node_ip:$remote_tmp..."
+        
+        # Create directory first to ensure consistent path structure
+        ssh -o BatchMode=yes -o StrictHostKeyChecking=no "$node_ip" "mkdir -p $remote_tmp"
+        
+        # Copy contents using wildcard to avoid creating a subdirectory
+        # Note: We use scp -r with wildcard to copy contents into the pre-created dir
+        if ! scp -r -o BatchMode=yes -o StrictHostKeyChecking=no "$MOD_PATH"/* "$node_ip:$remote_tmp/"; then
+            echo "Error: Failed to copy mod to $node_ip"
+            exit 1
+        fi
+        target_mod_path="$remote_tmp"
+    fi
+
+    # 2. Copy into container
+    local container_dest="/workspace/mods/$mod_name"
+    
+    # Command prefix for remote vs local
+    local cmd_prefix=""
+    if [[ "$is_local" == "false" ]]; then
+        cmd_prefix="ssh -o BatchMode=yes -o StrictHostKeyChecking=no $node_ip"
+    fi
+
+    # Create workspace in container
+    $cmd_prefix docker exec "$container" mkdir -p "$container_dest"
+
+    if [[ "$MOD_TYPE" == "zip" ]]; then
+        local zip_name=$(basename "$MOD_PATH")
+        echo "  Copying zip to container..."
+        $cmd_prefix docker cp "$target_mod_path" "$container:$container_dest/$zip_name"
+        
+        # Unzip in container using python
+        echo "  Extracting zip..."
+        local py_unzip="import zipfile, sys; zipfile.ZipFile(sys.argv[1], 'r').extractall(sys.argv[2])"
+        $cmd_prefix docker exec "$container" python3 -c "$py_unzip" "$container_dest/$zip_name" "$container_dest"
+    else
+        # Directory
+        echo "  Copying directory content to container..."
+        if [[ "$is_local" == "true" ]]; then
+             docker cp "$MOD_PATH/." "$container:$container_dest/"
+        else
+             # For remote, we copied contents to $target_mod_path.
+             # We want to copy contents of $target_mod_path to $container_dest.
+             $cmd_prefix docker cp "$target_mod_path/." "$container:$container_dest/"
+        fi
+    fi
+
+    # 3. Run run.sh
+    echo "  Running patch script on $node_ip..."
+    echo "CMD: cd $container_dest && chmod +x run.sh && ./run.sh"
+    if ! $cmd_prefix docker exec "$container" bash -c "cd $container_dest && chmod +x run.sh && ./run.sh"; then
+        echo "Error: Patch script failed on $node_ip"
+        # We should probably stop the cluster here or at least fail hard
+        exit 1
+    fi
+
+    # 4. Signal completion
+    echo "  Signaling completion..."
+    $cmd_prefix docker exec "$container" touch /tmp/mod_done
+
+    # 5. Cleanup remote temp
+    if [[ "$is_local" == "false" ]]; then
+        ssh -o BatchMode=yes -o StrictHostKeyChecking=no "$node_ip" "rm -rf $target_mod_path"
+    fi
+}
+
 # Start Cluster Function
 start_cluster() {
     check_cluster_running
@@ -259,34 +384,45 @@ start_cluster() {
 
     # Start Head Node
     echo "Starting Head Node on $HEAD_IP..."
+    
+    local head_cmd_args=()
+    if [[ -n "$MOD_PATH" ]]; then
+        head_cmd_args=(bash -c "echo Waiting for mod application...; while [ ! -f /tmp/mod_done ]; do sleep 1; done; echo Mod applied, starting node...; exec ./run-cluster-node.sh --role head --host-ip $HEAD_IP --eth-if $ETH_IF --ib-if $IB_IF")
+    else
+        head_cmd_args=(./run-cluster-node.sh --role head --host-ip "$HEAD_IP" --eth-if "$ETH_IF" --ib-if "$IB_IF")
+    fi
+
     docker run -d --privileged --gpus all --rm \
         --ipc=host --network host \
         --name "$CONTAINER_NAME" \
         $DOCKER_ARGS \
         "$IMAGE_NAME" \
-        ./run-cluster-node.sh \
-        --role head \
-        --host-ip "$HEAD_IP" \
-        --eth-if "$ETH_IF" \
-        --ib-if "$IB_IF"
+        "${head_cmd_args[@]}"
 
-    # Start Worker Nodes
     # Start Worker Nodes
     for worker in "${PEER_NODES[@]}"; do
         echo "Starting Worker Node on $worker..."
-        ssh "$worker" "docker run -d --privileged --gpus all --rm \
-            --ipc=host --network host \
-            --name $CONTAINER_NAME \
-            $DOCKER_ARGS \
-            $IMAGE_NAME \
-            ./run-cluster-node.sh \
-            --role node \
-            --host-ip $worker \
-            --eth-if $ETH_IF \
-            --ib-if $IB_IF \
-            --head-ip $HEAD_IP"
+        
+        local docker_run_cmd="docker run -d --privileged --gpus all --rm --ipc=host --network host --name $CONTAINER_NAME $DOCKER_ARGS $IMAGE_NAME"
+        
+        if [[ -n "$MOD_PATH" ]]; then
+            local inner_script="echo Waiting for mod application...; while [ ! -f /tmp/mod_done ]; do sleep 1; done; echo Mod applied, starting node...; exec ./run-cluster-node.sh --role node --host-ip $worker --eth-if $ETH_IF --ib-if $IB_IF --head-ip $HEAD_IP"
+            ssh "$worker" "$docker_run_cmd bash -c \"$inner_script\""
+        else
+            ssh "$worker" "$docker_run_cmd ./run-cluster-node.sh --role node --host-ip $worker --eth-if $ETH_IF --ib-if $IB_IF --head-ip $HEAD_IP"
+        fi
     done
 
+    # Apply mods if requested
+    if [[ -n "$MOD_PATH" ]]; then
+        echo "Applying modifications to cluster nodes..."
+        apply_mod_to_container "$HEAD_IP" "$CONTAINER_NAME" "true"
+        
+        for worker in "${PEER_NODES[@]}"; do
+            apply_mod_to_container "$worker" "$CONTAINER_NAME" "false"
+        done
+    fi
+
     wait_for_cluster
 }
 
diff --git a/mods/fix-Salyut1-GLM-4.7-NVFP4/glm4_moe.patch b/mods/fix-Salyut1-GLM-4.7-NVFP4/glm4_moe.patch
new file mode 100644
index 0000000..5d63693
--- /dev/null
+++ b/mods/fix-Salyut1-GLM-4.7-NVFP4/glm4_moe.patch
@@ -0,0 +1,18 @@
+--- a/usr/local/lib/python3.12/dist-packages/vllm/model_executor/models/glm4_moe.py
++++ b/usr/local/lib/python3.12/dist-packages/vllm/model_executor/models/glm4_moe.py
+@@ -537,6 +537,7 @@
+                 if is_pp_missing_parameter(name, self):
+                     continue
+
++                if ('k_scale' in name or 'v_scale' in name) and name not in params_dict: continue
+                 param = params_dict[name]
+                 weight_loader = param.weight_loader
+                 weight_loader(param, loaded_weight, shard_id)
+@@ -596,6 +597,7 @@
+                     if is_pp_missing_parameter(name, self):
+                         continue
+
++                    if ('k_scale' in name or 'v_scale' in name) and name not in params_dict: continue
+                     param = params_dict[name]
+                     weight_loader = getattr(
+                         param, "weight_loader", default_weight_loader
diff --git a/mods/fix-Salyut1-GLM-4.7-NVFP4/run.sh b/mods/fix-Salyut1-GLM-4.7-NVFP4/run.sh
new file mode 100644
index 0000000..5d1c39f
--- /dev/null
+++ b/mods/fix-Salyut1-GLM-4.7-NVFP4/run.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+set -e
+patch -p1 -d / < glm4_moe.patch
\ No newline at end of file