diff --git a/minimateplus/client.py b/minimateplus/client.py
index 9c1389a..ab803c3 100644
--- a/minimateplus/client.py
+++ b/minimateplus/client.py
@@ -993,14 +993,22 @@ def _extract_peak_floats(data: bytes) -> Optional[PeakValues]:
     if not vals:
         return None
 
-    # ── Peak Vector Sum — fixed offset 87 (✅ confirmed 2026-04-01) ───────────
+    # ── Peak Vector Sum — label-relative offset ──────────────────────────────
     # = √(Tran² + Vert² + Long²) at the sample instant of maximum combined geo
     # motion, NOT the vector sum of the three per-channel peak values (which may
     # occur at different times).  Matches Blastware "Peak Vector Sum" exactly.
+    #
+    # PVS lives at tran_label_pos - 12 for both 0x10 and 0x03 record types.
+    # Confirmed from raw bytes of two events (2026-04-01 and 2026-04-03):
+    #   0x10: Tran at byte 98,  PVS float at bytes 86–89  (98 - 12 = 86)  ✅
+    #   0x03: Tran at byte 104, PVS float at bytes 92–95  (104 - 12 = 92) ✅
+    # Using a fixed absolute offset (87) breaks for 0x03 records because their
+    # timestamp header is 10 bytes instead of 9, shifting all subsequent fields.
     pvs: Optional[float] = None
-    if len(data) > 91:
+    tran_pos = data.find(b"Tran")
+    if tran_pos >= 12:
         try:
-            pvs = struct.unpack_from(">f", data, 87)[0]
+            pvs = struct.unpack_from(">f", data, tran_pos - 12)[0]
         except struct.error:
             pass
 
diff --git a/sfm/server.py b/sfm/server.py
index 8a57408..10c2a1d 100644
--- a/sfm/server.py
+++ b/sfm/server.py
@@ -155,7 +155,7 @@ def _serialise_device_info(info: DeviceInfo) -> dict:
         "dsp_version":        info.dsp_version,
         "manufacturer":       info.manufacturer,
         "model":              info.model,
-        "event_count":        info.event_count,
+        "event_count_sub08":  info.event_count,   # unreliable — SUB 08 always returns 1
         "compliance_config":  _serialise_compliance_config(info.compliance_config),
     }