diff --git a/examples/compare.C b/examples/compare.C
deleted file mode 100644
index 1664415a39d83b728b5c1188c153bc160c29ea1c..0000000000000000000000000000000000000000
--- a/examples/compare.C
+++ /dev/null
@@ -1,147 +0,0 @@
-{
-  TFile* f = new TFile("hodtest.root");
-  
-  TCanvas *c1 = new TCanvas("c1", "Shower Hit Maps", 1000, 1200); 
-  c1->Divide(2, 3);
-  
-  TH1F *h1[6];
-  TH1F* h[6];
-  
-  for(int l = 0; l < 6; l++){
-    h1[l] = new TH1F("","",13,0.4,13.4);
-  }
-  Double_t mean = 0.;
-  Double_t hits;
-  Double_t raw[13] = {1, 2,  3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
-  Double_t ratio[77];
-  Double_t err[77];
-
-
-//with peds and scalers
-//   double v[6][13] = { 
-//     {679, 2016, 2439, 2446, 2369, 2179, 2045, 1953, 1723, 1618, 1465, 1241, 1061},  //hcalapos
-//     {0,   2125, 2521, 2420, 2364, 2006, 1935, 1911, 1769, 1536, 1450, 1242, 1090},  //hcalaneg
-//     {803, 2069, 2446, 2422, 2188, 1986, 2043, 1881, 1736, 1630, 1455, 1130, 1086},  //hcalbpos
-//     {788, 2034, 2372, 2217, 2141, 2002, 1956, 1938, 1700, 1605, 1442, 1219,  952},  //hcalbneg
-//     {915, 1964, 2276, 2066, 2122, 1880, 1969, 1854, 1576, 1500, 1403, 1189,  875},  //hcalcpos
-//     {7187, 1748, 1890, 1852, 1786, 1573, 1525, 1510, 1376, 1432, 1191, 1033, 809}   //hcaldpos
-//   };
-
-  double v[6][13] = { 
-    {747, 2212, 2688, 2698, 2602, 2400, 2228, 2131, 1910, 1763, 1605, 1382, 1179},  //hcalapos
-    {0,   2334, 2784, 2673, 2599, 2215, 2107, 2079, 1958, 1672, 1584, 1384, 1211},  //hcalaneg
-    {882, 2285, 2709, 2650, 2405, 2184, 2230, 2062, 1921, 1789, 1589, 1252, 1204},  //hcalbpos
-    {866, 2244, 2632, 2430, 2354, 2207, 2127, 2127, 1888, 1757, 1578, 1345, 1054},  //hcalbneg
-    {1006, 2171, 2529, 2262, 2302, 2070, 2149, 2024, 1732, 1634, 1543, 1323, 957},  //hcalcpos
-    {7913, 1918, 2084, 2027, 1947, 1739, 1668, 1646, 1521, 1572, 1302, 1136, 887}   //hcaldpos
-  };
-
-
-  // //Without thresholds
-  //	double v[6][13] = {
-  // 	{679, 2296, 2439, 2446, 2369, 2179, 2045, 1953, 1723, 1618, 1465, 1241, 1061};
-  //      {0, 2125, 2521, 2420, 2364, 2006, 1935, 1911, 1769, 1536, 1450, 1242, 1090};
-  // 	{803, 2069, 2446, 2422, 2188, 1986, 2043, 1881, 1736, 1630, 1455, 1130, 1086};
-  //      {788, 2034, 2372, 2217, 2141, 2002, 1956, 1938, 1700, 1605, 1442, 1219, 952};
-  //      {915, 1964, 2276, 2066, 2122, 1880, 1969, 1854, 1576, 1500, 1403, 1189, 875};
-  // 	{12633, 1748, 1890, 1852, 1786, 1573, 1525, 1510, 1376, 1432, 1191, 1033, 809};
-  
-  h[0] = chposadc1;
-  h[1] = chnegadc1;
-  h[2] = chposadc2;
-  h[3] = chnegadc2;
-  h[4] = chposadc3;
-  h[5] = chposadc4;
-
-
-  for (int j = 0; j < 6; j++){
-    c1->cd(j+1);
-    h[j]->SetFillColor(kGreen);
-    h[j]->SetFillStyle(3345);
-    h[j]->Draw();
-    
-    for(int k = 0; k < 13; k++){
-      for(int i = 0; i < v[j][k]; i++){
-	hits = raw[k]-0.1;
-	h1[j]->Fill(hits);
-      }
-    }
-    h1[j]->SetFillColor(kBlue);
-    h1[j]->SetFillStyle(3354);
-    h1[j]->Draw("same");
-  }
-
-for (int i = 1; i < 14; i++){
-cout << "hitsC = " << h[0].GetBinContent(i) << endl;
-}
-
-
-/*
-int n = 0;
-Double_t errC;
-Double_t errE;
-Double_t hitsC;
-Double_t hitsE;
-Double_t hitsCmean = 1876.81;
-Double_t hitsEmean = 1783.7;
-Double_t sum1 = 0.; //chislitel
-Double_t sum2 = 0.; 
-Double_t sum3 = 0.; 
-Double_t chan[77];
-Double_t r;
-
-  for (Int_t l = 0; l < 6; l++){ 
-//    cout << "ADC" << l+1 << ": " << endl;
-    for (Int_t i = 1; i < h[l].GetNbinsX() +1; i++){
-	hitsC = h[l].GetBinContent(i);
-	hitsE = h1[l].GetBinContent(i);
-      if (hitsC > 0 && hitsE > 0){
-	errC = 1./sqrt(hitsC);
-        errE = 1./sqrt(hitsE);
-	ratio[n] = hitsC/hitsE;
-//cout << "errC = " << errC << ", errE = " << errE << "corr = " <<  errC*errE << endl;
-	err[n] = sqrt((errC**2 + errE**2 - 2*errC*errE))*ratio[n];
-	mean = mean + ratio[n];
-
-
-
-
-sum1 = sum1 + (hitsC - hitsCmean)*(hitsE - hitsEmean);
-sum2 = sum2 + (hitsC - hitsCmean)**2;
-sum3 = sum3 + (hitsE - hitsEmean)**2;
-//	hitsCmean = hitsCmean + hitsC;
-//	hitsEmean = hitsEmean + hitsE;
-	chan[n] = n*1.;
-	n++;
-	}
-	//cout << "Hits ratio C++/ENGINE = " << err[l][i] << endl;
-    }
-  }
-mean = mean/n;
-//hitsCmean = hitsCmean/n;
-//hitsEmean = hitsEmean/n;
-r = sum1/sqrt(sum2*sum3);
-cout << "r = " << r << endl;
-
-c1->Update();
-TCanvas *c2 = new TCanvas("c2", "RATIO", 1200, 800); 
-c2->cd();
-// create the TGraphErrors and draw it
-gr = new TGraphErrors(n,chan,ratio,0,err);
-//gr->SetLineColor(8);
-gr->SetMarkerStyle(20);
- TAxis *xaxis = gr->GetXaxis();
- TAxis *yaxis = gr->GetYaxis();
- //xaxis->SetLimits(10, 60);
- xaxis->SetTitle("Channel");
- yaxis->SetTitle("Hits ratio (C++/Engine)");
-yaxis->SetTitleOffset(1.2);
-
-gr->Draw("AP");
-
-  TF1 *f1 = new TF1("f1","1.0527",0.,77.);
-   f1->Draw("same");
-
-c2->Update();
-*/
-} 
diff --git a/src/THcShower.cxx b/src/THcShower.cxx
index d0b6e2b13675246d68602d37a2761c98b08a153e..23dde2ce7011eef1f4ef815530c1953e6c57c4a4 100644
--- a/src/THcShower.cxx
+++ b/src/THcShower.cxx
@@ -155,6 +155,20 @@ Int_t THcShower::ReadDatabase( const TDatime& date )
   prefix[0]=tolower(GetApparatus()->GetName()[0]);
   prefix[1]='\0';
 
+  {
+    DBRequest list[]={
+      {"cal_num_neg_columns", &fNegCols, kInt},
+      {"cal_slop", &fSlop, kDouble},
+      {"cal_fv_test", &fvTest, kDouble},
+      {0}
+    };
+    gHcParms->LoadParmValues((DBRequest*)&list, prefix);
+  }
+
+  cout << "Number of neg. columns   = " << fNegCols << endl;
+  cout << "Slop parameter           = " << fSlop << endl;
+  cout << "Fiducial volum test flag = " << fvTest << endl;
+
   BlockThick = new Double_t [fNLayers];
   fNBlocks = new Int_t [fNLayers];
   fNLayerZPos = new Double_t [fNLayers];
@@ -476,11 +490,11 @@ Int_t THcShower::ApplyCorrections( void )
 }
 
 //_____________________________________________________________________________
-Double_t THcShower::TimeWalkCorrection(const Int_t& paddle,
-					     const ESide side)
-{
-  return(0.0);
-}
+//Double_t THcShower::TimeWalkCorrection(const Int_t& paddle,
+//					     const ESide side)
+//{
+//  return(0.0);
+//}
 
 //_____________________________________________________________________________
 Int_t THcShower::CoarseProcess( TClonesArray&  ) //tracks
diff --git a/src/THcShower.h b/src/THcShower.h
index 744f17e6048e0d1567f0de68894e6dc04ad3eb9b..9c641fbf3915f12882c1847d5c7e293ed0546c5f 100644
--- a/src/THcShower.h
+++ b/src/THcShower.h
@@ -35,7 +35,8 @@ public:
   const TClonesArray* GetTrackHits() const { return fTrackProj; }
 
   Int_t GetNBlocks(Int_t plane) const { return fNBlocks[plane-1];}
-  friend class THaScCalib;
+
+  //  friend class THaScCalib; not needed?
 
   Int_t fGetPedLimit(Int_t NBlock, Int_t NLayer, Int_t Side) {
     if (Side!=0&&Side!=1) {
@@ -73,13 +74,16 @@ protected:
 
   char** fLayerNames;
   Int_t fNLayers;
-  Int_t fNRows;
+  //  Int_t fNRows;             fNBlocks is used instead
   Double_t* fNLayerZPos;	// Z position of front of shower counter layers
   Double_t* BlockThick;		// Thickness of shower counter blocks, blocks
   Int_t* fNBlocks;              // Number of shower counter blocks per layer
   Int_t fNtotBlocks;            // Total number of shower counter blocks
   Double_t** YPos;		//X,Y positions of shower counter blocks
   Double_t* XPos;
+  Int_t fNegCols; //number of columns with PMTTs on the negative side only.
+  Double_t fSlop;               //Track to cluster vertical slop distance.
+  Int_t fvTest;                 //fiducial volume test flag
 
   THcShowerPlane** fPlanes; // List of plane objects
 
@@ -108,10 +112,10 @@ protected:
   virtual Int_t  ReadDatabase( const TDatime& date );
   virtual Int_t  DefineVariables( EMode mode = kDefine );
 
-  enum ESide { kLeft = 0, kRight = 1 };
+  //  enum ESide { kLeft = 0, kRight = 1 };
   
-  virtual  Double_t TimeWalkCorrection(const Int_t& paddle,
-				       const ESide side);
+  //  virtual  Double_t TimeWalkCorrection(const Int_t& paddle,
+  //				       const ESide side);
 
   void Setup(const char* name, const char* description);
 
diff --git a/src/THcShowerPlane.h b/src/THcShowerPlane.h
index 7e4c196c66d37010b0929e29a3081ea66721b53e..baf59531bb0d2f0c453c7975e4a855b216416cc1 100644
--- a/src/THcShowerPlane.h
+++ b/src/THcShowerPlane.h
@@ -35,7 +35,7 @@ class THcShowerPlane : public THaSubDetector {
 
   virtual Int_t CoarseProcess( TClonesArray& tracks );
   virtual Int_t FineProcess( TClonesArray& tracks );
-          Bool_t   IsTracking() { return kFALSE; }
+  Bool_t   IsTracking() { return kFALSE; }
   virtual Bool_t   IsPid()      { return kFALSE; }
 
   virtual Int_t ProcessHits(TClonesArray* rawhits, Int_t nexthit);
@@ -84,6 +84,3 @@ class THcShowerPlane : public THaSubDetector {
   ClassDef(THcShowerPlane,0)
 };
 #endif
-
-
-