diff --git a/src/kc/data/tl7.js b/src/kc/data/tl7.js
index dd54a9c..ce2fa34 100644
--- a/src/kc/data/tl7.js
+++ b/src/kc/data/tl7.js
@@ -1408,7 +1408,7 @@
         label: "mf-5"         
         type: "mf"         
         ref: "af-10"         
-        offset: 30091200         
+        offset: 29889200  // 30091200         
         smpCnt: 251445617         
         trackId: 4         
         textStr: "midi/6.Mid"