diff --git a/common-tools/clas-detector/src/main/java/org/jlab/detector/decode/CLASDecoder4.java b/common-tools/clas-detector/src/main/java/org/jlab/detector/decode/CLASDecoder4.java
index ab2879a7f..763042a2d 100644
--- a/common-tools/clas-detector/src/main/java/org/jlab/detector/decode/CLASDecoder4.java
+++ b/common-tools/clas-detector/src/main/java/org/jlab/detector/decode/CLASDecoder4.java
@@ -248,7 +248,7 @@ public List<DetectorDataDgtz>  getEntriesSCALER(DetectorType type,
     }
 
     public void extractPulses(Event event) {
-        ahdcExtractor.update(128, null, event, schemaFactory, "AHDC::wf", "AHDC::adc");
+        ahdcExtractor.update(64, null, event, schemaFactory, "AHDC::wf", "AHDC::adc");
     }
 
     public Bank getDataBankWF(String name, DetectorType type) {
diff --git a/etc/bankdefs/hipo4/data.json b/etc/bankdefs/hipo4/data.json
index ae5acb4e7..5ccc2696e 100644
--- a/etc/bankdefs/hipo4/data.json
+++ b/etc/bankdefs/hipo4/data.json
@@ -73,71 +73,7 @@
       { "name":"s61"        , "type":"S", "info":""},
       { "name":"s62"        , "type":"S", "info":""},
       { "name":"s63"        , "type":"S", "info":""},
-      { "name":"s64"        , "type":"S", "info":""},
-      { "name":"s65"        , "type":"S", "info":""},
-      { "name":"s66"        , "type":"S", "info":""},
-      { "name":"s67"        , "type":"S", "info":""},
-      { "name":"s68"        , "type":"S", "info":""},
-      { "name":"s69"        , "type":"S", "info":""},
-      { "name":"s70"        , "type":"S", "info":""},
-      { "name":"s71"        , "type":"S", "info":""},
-      { "name":"s72"        , "type":"S", "info":""},
-      { "name":"s73"        , "type":"S", "info":""},
-      { "name":"s74"        , "type":"S", "info":""},
-      { "name":"s75"        , "type":"S", "info":""},
-      { "name":"s76"        , "type":"S", "info":""},
-      { "name":"s77"        , "type":"S", "info":""},
-      { "name":"s78"        , "type":"S", "info":""},
-      { "name":"s79"        , "type":"S", "info":""},
-      { "name":"s80"        , "type":"S", "info":""},
-      { "name":"s81"        , "type":"S", "info":""},
-      { "name":"s82"        , "type":"S", "info":""},
-      { "name":"s83"        , "type":"S", "info":""},
-      { "name":"s84"        , "type":"S", "info":""},
-      { "name":"s85"        , "type":"S", "info":""},
-      { "name":"s86"        , "type":"S", "info":""},
-      { "name":"s87"        , "type":"S", "info":""},
-      { "name":"s88"        , "type":"S", "info":""},
-      { "name":"s89"        , "type":"S", "info":""},
-      { "name":"s90"        , "type":"S", "info":""},
-      { "name":"s91"        , "type":"S", "info":""},
-      { "name":"s92"        , "type":"S", "info":""},
-      { "name":"s93"        , "type":"S", "info":""},
-      { "name":"s94"        , "type":"S", "info":""},
-      { "name":"s95"        , "type":"S", "info":""},
-      { "name":"s96"        , "type":"S", "info":""},
-      { "name":"s97"        , "type":"S", "info":""},
-      { "name":"s98"        , "type":"S", "info":""},
-      { "name":"s99"        , "type":"S", "info":""},
-      { "name":"s100"        , "type":"S", "info":""},
-      { "name":"s101"        , "type":"S", "info":""},
-      { "name":"s102"        , "type":"S", "info":""},
-      { "name":"s103"        , "type":"S", "info":""},
-      { "name":"s104"        , "type":"S", "info":""},
-      { "name":"s105"        , "type":"S", "info":""},
-      { "name":"s106"        , "type":"S", "info":""},
-      { "name":"s107"        , "type":"S", "info":""},
-      { "name":"s108"        , "type":"S", "info":""},
-      { "name":"s109"        , "type":"S", "info":""},
-      { "name":"s110"        , "type":"S", "info":""},
-      { "name":"s111"        , "type":"S", "info":""},
-      { "name":"s112"        , "type":"S", "info":""},
-      { "name":"s113"        , "type":"S", "info":""},
-      { "name":"s114"        , "type":"S", "info":""},
-      { "name":"s115"        , "type":"S", "info":""},
-      { "name":"s116"        , "type":"S", "info":""},
-      { "name":"s117"        , "type":"S", "info":""},
-      { "name":"s118"        , "type":"S", "info":""},
-      { "name":"s119"        , "type":"S", "info":""},
-      { "name":"s120"        , "type":"S", "info":""},
-      { "name":"s121"        , "type":"S", "info":""},
-      { "name":"s122"        , "type":"S", "info":""},
-      { "name":"s123"        , "type":"S", "info":""},
-      { "name":"s124"        , "type":"S", "info":""},
-      { "name":"s125"        , "type":"S", "info":""},
-      { "name":"s126"        , "type":"S", "info":""},
-      { "name":"s127"        , "type":"S", "info":""},
-      { "name":"s128"        , "type":"S", "info":""}
+      { "name":"s64"        , "type":"S", "info":""}
     ]
   },
   {