diff --git a/armory/DataBlock.h b/armory/DataBlock.h
index 5c240f9..8e2ac81 100644
--- a/armory/DataBlock.h
+++ b/armory/DataBlock.h
@@ -14,6 +14,8 @@
 #include "TTree.h"
 #include "TString.h"
 
+#define MAX_TRACE_LENGHT 16000
+
 class DataBlock{
 
 public:
@@ -37,7 +39,7 @@ public:
   
   ULong64_t eventID;
   
-  UShort_t    trace[1024];
+  UShort_t  trace[MAX_TRACE_LENGHT];
   
   DataBlock(){
     Clear();
@@ -71,7 +73,7 @@ public:
   }
   
   void ClearTrace(){
-    for( int i = 0; i < 1024; i++) trace[i] = 0;    
+    for( int i = 0 ; i < MAX_TRACE_LENGHT; i++) trace[i] = 0;
   }
   
   
diff --git a/armory/MergeEVT.cpp b/armory/MergeEVT.cpp
index 47f2592..44b2477 100644
--- a/armory/MergeEVT.cpp
+++ b/armory/MergeEVT.cpp
@@ -81,20 +81,18 @@ int main(int argn, char **argv) {
     TBenchmark clock2;
     clock2.Reset();
     clock2.Start("timer");
+    
+    evt->ScanNumberOfBlock();
 
     //=============== Read File
     while( evt->IsEndOfFile() == false ){
       
       evt->ReadBlock();
-      evt->PrintStatus(10000);
+      //evt->PrintStatus(10000);
       
-    
       int id = data->crate*MAX_BOARDS_PER_CRATE*MAX_CHANNELS_PER_BOARD + (data->slot-BOARD_START)*MAX_CHANNELS_PER_BOARD + data->ch;
       detID = mapping[id];
       
-      printf("--------- a\n");
-      outFile->
-      
       //cern fill tree
       outFile->cd();
       tree->Fill();
diff --git a/armory/evtReader.h b/armory/evtReader.h
index f507df4..ab8855c 100644
--- a/armory/evtReader.h
+++ b/armory/evtReader.h
@@ -37,7 +37,7 @@ class evtReader{
     long int  nBlock;
     
     unsigned int extraHeader[14];
-    unsigned int traceBlock[4000];
+    unsigned int traceBlock[MAX_TRACE_LENGHT/2];
     
     TBenchmark gClock;
 
@@ -167,6 +167,7 @@ int evtReader::ReadBlock(int opt){
     data->trace_out_of_range =  header[3] >> 31;
 
     data->ClearQDC();
+    data->ClearTrace();
 
     ///======== read QDCsum
     if( data->headerLength >= 4 ){
@@ -192,15 +193,16 @@ int evtReader::ReadBlock(int opt){
       data->baseline = 0;
     }
     ///====== read trace
-    if( data->eventLength > data->headerLength ){      
+    if( data->eventLength > data->headerLength ){
       fread(traceBlock, sizeof(unsigned int) * ( data->trace_length / 2 ), 1, inFile);
-      
+    
       for( int i = 0; i < data->trace_length/2 ; i++){
         data->trace[2*i+0] =  traceBlock[i] & 0xFFFF ;
         data->trace[2*i+1] = (traceBlock[i] >> 16 ) & 0xFFFF ;
       }
       
       ///make QDC by trace
+      /**
       if( data->headerLength == 4 || data->headerLength == 8 ) {
         for( int i = 0; i < 8; i++){ data->QDCsum[i] = 0;}
         for( int i = 0; i < data->trace_length; i++){
@@ -213,7 +215,7 @@ int evtReader::ReadBlock(int opt){
           if( 160 <= i && i < 175 ) data->QDCsum[6] += data->trace[i];
           if( 175 <= i && i < 200 ) data->QDCsum[7] += data->trace[i];
         }
-      }
+      }*/
     }
   }