diff --git a/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountConfigurationPanel.java b/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountConfigurationPanel.java
index 35231e3cc..527fe69fc 100644
--- a/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountConfigurationPanel.java
+++ b/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountConfigurationPanel.java
@@ -13,19 +13,14 @@ import net.sf.openrocket.gui.util.GUIUtil;
 import net.sf.openrocket.rocketcomponent.Rocket;
 
 @SuppressWarnings("serial")
-public abstract class MotorMountConfigurationPanel extends JPanel {
-
-	private final Rocket rocket;
-	private final Component parent;
+public class MotorMountConfigurationPanel extends JPanel {
 	
 	public MotorMountConfigurationPanel( Component parent, Rocket rocket ) {
 		super(new MigLayout("") );
 		
-		this.parent = parent;
-		this.rocket = rocket;
-		
-		//// Motor Mount selection 
-		JTable table = new JTable(new MotorMountTableModel(this, rocket));
+		//// Motor Mount selection
+		MotorMountTableModel model = new MotorMountTableModel( rocket);
+		JTable table = new JTable( model );
 		table.setTableHeader(null);
 		table.setShowVerticalLines(false);
 		table.setRowSelectionAllowed(false);
@@ -43,6 +38,4 @@ public abstract class MotorMountConfigurationPanel extends JPanel {
 		this.add(scroll, "w 200lp, h 150lp, grow");
 
 	}
-
-	public abstract void onDataChanged();
 }
diff --git a/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountTableModel.java b/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountTableModel.java
index fe9fbbd8c..4dd515e48 100644
--- a/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountTableModel.java
+++ b/swing/src/net/sf/openrocket/gui/dialogs/flightconfiguration/MotorMountTableModel.java
@@ -17,18 +17,16 @@ import net.sf.openrocket.util.ArrayList;
  * The table model for selecting whether components are motor mounts or not.
  */
 class MotorMountTableModel extends AbstractTableModel implements ComponentChangeListener {
-	
-	private final MotorMountConfigurationPanel motorConfigurationPanel;
-	
-	private final List<MotorMount> potentialMounts = new ArrayList<MotorMount>();
+	private static final long serialVersionUID = 1956400848559941228L;
+
+    private final List<MotorMount> potentialMounts = new ArrayList<MotorMount>();
 	
 	private final Rocket rocket;
 	
 	/**
 	 * @param motorConfigurationPanel
 	 */
-	MotorMountTableModel(MotorMountConfigurationPanel motorConfigurationPanel, Rocket rocket) {
-		this.motorConfigurationPanel = motorConfigurationPanel;
+	MotorMountTableModel( Rocket rocket) {
 		this.rocket = rocket;
 		
 		initialize();
@@ -101,7 +99,7 @@ class MotorMountTableModel extends AbstractTableModel implements ComponentChange
 			throw new IllegalArgumentException("column=" + column + ", value=" + value);
 		}
 		
-		Log.warn("this method is no longer useful....: setValueAt(obj,int,int):104");
-		//this.motorConfigurationPanel.onDataChanged();
+        MotorMount mount = potentialMounts.get(row);
+        mount.setMotorMount((Boolean) value);
 	}
 }
\ No newline at end of file
diff --git a/swing/src/net/sf/openrocket/gui/main/flightconfigpanel/MotorConfigurationPanel.java b/swing/src/net/sf/openrocket/gui/main/flightconfigpanel/MotorConfigurationPanel.java
index 301b6fb80..83ddfb1f9 100644
--- a/swing/src/net/sf/openrocket/gui/main/flightconfigpanel/MotorConfigurationPanel.java
+++ b/swing/src/net/sf/openrocket/gui/main/flightconfigpanel/MotorConfigurationPanel.java
@@ -60,13 +60,7 @@ public class MotorConfigurationPanel extends FlightConfigurablePanel<MotorMount>
 			JLabel label = new StyledLabel(trans.get("lbl.motorMounts"), Style.BOLD);
 			subpanel.add(label, "wrap");
 
-			MotorMountConfigurationPanel mountConfigPanel = new MotorMountConfigurationPanel(this,rocket) {
-
-				@Override
-				public void onDataChanged() {
-					MotorConfigurationPanel.this.fireTableDataChanged();
-				}
-			};
+			MotorMountConfigurationPanel mountConfigPanel = new MotorMountConfigurationPanel(this,rocket);
 			subpanel.add(mountConfigPanel, "grow");
 			this.add(subpanel, "split, w 200lp, growy");
 		}
diff --git a/swing/src/net/sf/openrocket/gui/util/GUIUtil.java b/swing/src/net/sf/openrocket/gui/util/GUIUtil.java
index e3525963e..d4cf3b322 100644
--- a/swing/src/net/sf/openrocket/gui/util/GUIUtil.java
+++ b/swing/src/net/sf/openrocket/gui/util/GUIUtil.java
@@ -372,7 +372,7 @@ public class GUIUtil {
 		
 		
 		for (int col = 0; col < columns; col++) {
-			System.err.println("Setting column " + col + " to width " + widths[col]);
+			//System.err.println("Setting column " + col + " to width " + widths[col]);
 			table.getColumnModel().getColumn(col).setPreferredWidth(Math.min(widths[col], max) * 100);
 		}
 	}
@@ -576,6 +576,7 @@ public class GUIUtil {
 	public static class BooleanTableClickListener extends MouseAdapter {
 		
 		private final JTable table;
+		// these are different because the MouseEvent and the model use different indexing (0- vs 1-)
 		private final int clickColumn;
 		private final int booleanColumn;
 		
@@ -596,34 +597,35 @@ public class GUIUtil {
 			if (e.getButton() != MouseEvent.BUTTON1)
 				return;
 			
-			Point p = e.getPoint();
-			int col = table.columnAtPoint(p);
-			if (col < 0)
+			final Point p = e.getPoint();
+			final int tableColumn = table.columnAtPoint(p);
+			if (tableColumn < 0)
 				return;
-			col = table.convertColumnIndexToModel(col);
-			if (col != clickColumn)
+
+			final int modelColumn= table.convertColumnIndexToModel(tableColumn);
+			if (modelColumn != clickColumn)
 				return;
-			
-			int row = table.rowAtPoint(p);
-			if (row < 0)
+
+			final int tableRow = table.rowAtPoint(p);
+			if (tableRow < 0)
 				return;
-			row = table.convertRowIndexToModel(row);
-			if (row < 0)
+
+			final int modelRow = table.convertRowIndexToModel(tableRow);
+			if ( modelRow < 0)
 				return;
-			
+
 			TableModel model = table.getModel();
-			Object value = model.getValueAt(row, booleanColumn);
-			
-			if (!(value instanceof Boolean)) {
-				throw new IllegalStateException("Table value at row=" + row + " col=" +
+			final Object value = model.getValueAt(modelRow, booleanColumn);
+	        if (!(value instanceof Boolean)) {
+				throw new IllegalStateException("Table value at row=" + modelRow + " col=" +
 						booleanColumn + " is not a Boolean, value=" + value);
 			}
 			
-			Boolean b = (Boolean) value;
-			b = !b;
-			model.setValueAt(b, row, booleanColumn);
+			final Boolean oldValue = (Boolean) value;
+			final Boolean newValue = !oldValue;
+			model.setValueAt(newValue, tableRow, booleanColumn);
 			if (model instanceof AbstractTableModel) {
-				((AbstractTableModel) model).fireTableCellUpdated(row, booleanColumn);
+				((AbstractTableModel) model).fireTableCellUpdated(tableRow, booleanColumn);
 			}
 		}