diff --git a/src/DBAccess.cpp b/src/DBAccess.cpp
index d26b781a4..566e5d998 100644
--- a/src/DBAccess.cpp
+++ b/src/DBAccess.cpp
@@ -100,8 +100,9 @@
 // 79  20  Jun 2014 Mark Liversedge    Change the way average temperature is handled
 // 80  13  Jul 2014 Mark Liversedge    W' work + Below CP work = Work
 // 81  16  Aug 2014 Joern Rischmueller Added 'Elevation Loss'
+// 82  23  Aug 2014 Mark Liversedge    Added W'bal Matches
 
-int DBSchemaVersion = 81;
+int DBSchemaVersion = 82;
 
 DBAccess::DBAccess(Context* context) : context(context), db(NULL)
 {
diff --git a/src/RideFile.cpp b/src/RideFile.cpp
index c54dab733..6075ee0ef 100644
--- a/src/RideFile.cpp
+++ b/src/RideFile.cpp
@@ -1235,6 +1235,7 @@ RideFile::recalculateDerivedSeries()
         if (oCP) CP=oCP;
     }
 
+#if 0 // use a fix tool
     // Power Estimation Constants
     double hRider = 1.7 ; //Height in m
     double M = getWeight(); //Weight kg
@@ -1255,6 +1256,7 @@ RideFile::recalculateDerivedSeries()
     double adipos = sqrt(M/(hRider*750));
     double CwaBike = afCdBike * (afCATireV * ATire + afCATireH * ATire + afAFrame);
     qDebug()<<"CwaBike="<<CwaBike<<", afCdBike="<<afCdBike<<", afCATireV="<<afCATireV<<", ATire="<<ATire<<", afCATireH="<<afCATireH<<", afAFrame="<<afAFrame;
+#endif
 
     // last point looked at
     RideFilePoint *lastP = NULL;
@@ -1398,6 +1400,7 @@ RideFile::recalculateDerivedSeries()
             p->antiss = anTISS;
         }
 
+#if 0 // updating the primary data series should be done via a Fix Tool
         // Slope
         // If there is no slope data then it can be derived
         // from distanct and altitude
@@ -1418,6 +1421,7 @@ RideFile::recalculateDerivedSeries()
 
         // last point
         lastP = p;
+#endif
     }
 
     // Averages and Totals
@@ -1430,6 +1434,7 @@ RideFile::recalculateDerivedSeries()
     avgPoint->apower = APcount ? (APtotal / APcount) : 0;
     totalPoint->apower = APtotal;
 
+#if 0 // again use a fix tool
     // Smooth the slope if it has been derived
     if (!dataPresent.slope && dataPresent.alt && dataPresent.km) {
         int smoothPoints = 10;
@@ -1497,5 +1502,6 @@ RideFile::recalculateDerivedSeries()
         // and we're done
         dstale=false;
     }
-
+#endif
+    dstale=false;
 }
diff --git a/src/WPrime.cpp b/src/WPrime.cpp
index a06aa77d6..0a91b5e91 100644
--- a/src/WPrime.cpp
+++ b/src/WPrime.cpp
@@ -659,6 +659,39 @@ class MaxMatch : public RideMetric {
     RideMetric *clone() const { return new MaxMatch(*this); }
 };
 
+class Matches : public RideMetric {
+    Q_DECLARE_TR_FUNCTIONS(Matches);
+
+    public:
+
+    Matches()
+    {
+        setSymbol("skiba_wprime_matches");
+        setInternalName("W'bal Matches > 2KJ");
+    }
+    void initialize() {
+        setName(tr("W'bal Matches"));
+        setType(RideMetric::Total);
+        setMetricUnits(tr("matches"));
+        setImperialUnits(tr("matches"));
+        setPrecision(1);
+    }
+    void compute(const RideFile *r, const Zones *, int,
+                 const HrZones *, int,
+                 const QHash<QString,RideMetric*> &,
+                 const Context *) {
+
+        int matches=0;
+        foreach(Match m, const_cast<RideFile*>(r)->wprimeData()->matches) {
+            if (m.cost > 2000) matches++; // 2kj is minimum size
+        }
+        setValue(matches);
+    }
+
+    bool canAggregate() { return false; }
+    RideMetric *clone() const { return new Matches(*this); }
+};
+
 class WPrimeTau : public RideMetric {
     Q_DECLARE_TR_FUNCTIONS(WPrimeTau);
 
@@ -777,6 +810,7 @@ class CPExp : public RideMetric {
 static bool addMetrics() {
     RideMetricFactory::instance().addMetric(MinWPrime());
     RideMetricFactory::instance().addMetric(MaxWPrime()); // same thing expressed as a maximum
+    RideMetricFactory::instance().addMetric(Matches());
     RideMetricFactory::instance().addMetric(MaxMatch());
     RideMetricFactory::instance().addMetric(WPrimeTau());
     RideMetricFactory::instance().addMetric(WPrimeExp());