diff --git a/minimateplus/protocol.py b/minimateplus/protocol.py
index ad5fdff..5857191 100644
--- a/minimateplus/protocol.py
+++ b/minimateplus/protocol.py
@@ -500,12 +500,8 @@ class MiniMateProtocol:
             ("D", 0x002A, _DATA_PARAMS),   # _DATA_PARAMS built above
         ]
 
-        config   = bytearray()
-        # Track (page_key, chunk_size) pairs to detect when frame D returns the
-        # same page/size as frame B — observed on BE11529 when the device is
-        # busy or connection state is fresh.  Duplicate chunks inflate the cfg
-        # and mis-align field offsets, so we drop them.
-        seen_chunks: set[tuple[int, int]] = set()
+        config     = bytearray()
+        seen_bytes: set[bytes] = set()   # exact-content dedup (not page_key+len)
 
         for step_name, step_offset, step_params in _STEPS:
             log.debug(
@@ -526,17 +522,16 @@ class MiniMateProtocol:
 
             chunk = data_rsp.data[11:]
             page  = data_rsp.page_key
-            key   = (page, len(chunk))
 
-            if key in seen_chunks:
+            if chunk in seen_bytes:
                 log.warning(
                     "read_compliance_config: frame %s  page=0x%04X  data=%d  "
-                    "cfg_chunk=%d  DUPLICATE — skipping",
+                    "cfg_chunk=%d  BYTE-IDENTICAL DUPLICATE — skipping",
                     step_name, page, len(data_rsp.data), len(chunk),
                 )
                 continue
 
-            seen_chunks.add(key)
+            seen_bytes.add(bytes(chunk))
             log.warning(
                 "read_compliance_config: frame %s  page=0x%04X  data=%d  "
                 "cfg_chunk=%d  running_total=%d",