diff --git a/qwen3_6_scripts/paged_attn.py b/qwen3_6_scripts/paged_attn.py
index c3f8492c..c27c615d 100644
--- a/qwen3_6_scripts/paged_attn.py
+++ b/qwen3_6_scripts/paged_attn.py
@@ -2282,5 +2282,4 @@ class PagedAttention:
     ) -> None:
         key_caches = [kv_cache[0] for kv_cache in kv_caches]
         value_caches = [kv_cache[1] for kv_cache in kv_caches]
-        import ixformer.functions as ixf_F
-        ixf_F.vllm_copy_cache(key_caches, value_caches, src_to_dists)
+        ops.copy_blocks(key_caches, value_caches, src_to_dists)
\ No newline at end of file
diff --git a/qwen3_6_scripts/patch_ops.sh b/qwen3_6_scripts/patch_ops.sh
index c454726e..1ce727fe 100755
--- a/qwen3_6_scripts/patch_ops.sh
+++ b/qwen3_6_scripts/patch_ops.sh
@@ -247,10 +247,19 @@ INIT_EOF
 import logging
 _logger = logging.getLogger("ix_startup_patch")
 def apply():
+    import sys, os
+    # Ensure ex_engine is importable from both locations
+    for p in ["/workspace/qwen3_6_scripts/ex_engine/..",
+              "/workspace/qwen3_6_scripts",
+              "/workspace/ex_engine/..",
+              "/workspace"]:
+        rp = os.path.realpath(p)
+        if os.path.isdir(rp) and rp not in sys.path:
+            sys.path.insert(0, rp)
     n = 0
     # 1. ix_full_bridge patches (rms_norm, silu_and_mul, linear)
     try:
-        from vllm.ex_engine.python.patch_vllm_ops import apply_all_patches
+        from ex_engine.python.patch_vllm_ops import apply_all_patches
         k = apply_all_patches()
         n += k
         if k > 0:
@@ -259,7 +268,7 @@ def apply():
         _logger.warning("ix_startup_patch: bridge patches failed: %s", e)
     # 2. xllm kernel patches (topk_softmax, norm, activation, rope, cache)
     try:
-        from vllm.ex_engine.python.patch_vllm_hot_path import apply as apply_hot
+        from ex_engine.python.patch_vllm_hot_path import apply as apply_hot
         k = apply_hot(strict=False)
         n += k
         if k > 0: