diff --git a/core/src/net/sf/openrocket/rocketcomponent/FlightConfiguration.java b/core/src/net/sf/openrocket/rocketcomponent/FlightConfiguration.java
index 9241c0ebe..e1e911912 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/FlightConfiguration.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/FlightConfiguration.java
@@ -40,7 +40,7 @@ public class FlightConfiguration implements FlightConfigurableParameter<FlightCo
 	
 	protected static int instanceCount=0;
 	public final int instanceNumber;
-	
+
 	protected class StageFlags implements Cloneable {
 		public boolean active = true;
 		public int prev = -1;
@@ -91,8 +91,7 @@ public class FlightConfiguration implements FlightConfigurableParameter<FlightCo
 		this.rocket = rocket;
 		this.isNamed = false;
 		this.configurationName = "<WARN: attempt to access unset configurationName. WARN!> ";
-		instanceNumber = FlightConfiguration.instanceCount;
-		++FlightConfiguration.instanceCount;
+		this.instanceNumber = instanceCount++;
 		
 		updateStages();
 		updateMotors();
@@ -361,36 +360,6 @@ public class FlightConfiguration implements FlightConfigurableParameter<FlightCo
 		updateMotors();
 	}
 	
-	/**
-	 * Add a motor instance to this configuration.  The motor is placed at
-	 * the specified position and with an infinite ignition time (never ignited).
-	 * 
-	 * @param id			the ID of this motor instance.
-	 * @param motor			the motor instance.
-	 * @param mount			the motor mount containing this motor
-	 * @param ignitionEvent	the ignition event for the motor
-	 * @param ignitionDelay	the ignition delay for the motor
-	 * @param position		the position of the motor in absolute coordinates.
-	 * @throws IllegalArgumentException	if a motor with the specified ID already exists.
-	 */
-	//	public void addMotor(MotorId _id, Motor _motor, double _ejectionDelay, MotorMount _mount,
-	//			IgnitionEvent _ignitionEvent, double _ignitionDelay, Coordinate _position) {
-	//		
-	//		MotorInstance instanceToAdd = new MotorInstance(_id, _motor, _mount, _ejectionDelay,
-	//				_ignitionEvent, _ignitionDelay, _position);
-	//		
-	//		
-	//		//		this.ids.add(id);
-	//		//		this.motors.add(motor);
-	//		//		this.ejectionDelays.add(ejectionDelay);
-	//		//		this.mounts.add(mount);
-	//		//		this.ignitionEvents.add(ignitionEvent);
-	//		//		this.ignitionDelays.add(ignitionDelay);
-	//		//		this.positions.add(position);
-	//		//		this.ignitionTimes.add(Double.POSITIVE_INFINITY);
-	//	}
-	
-	
 	/**
 	 * Add a motor instance to this configuration.  
 	 * 
@@ -508,14 +477,13 @@ public class FlightConfiguration implements FlightConfigurableParameter<FlightCo
 	 */
 	@Override
 	public FlightConfiguration clone() {
+		// Note the motors and stages are updated in the constructor call.
 		FlightConfiguration clone = new FlightConfiguration( this.getRocket(), this.fcid );
 		clone.setName("clone - "+this.fcid.toShortKey());
-		for( StageFlags flags : this.stages.values()){
-			clone.stages.put( flags.stage.getStageNumber(), flags.clone());
-        }
-		for( MotorConfiguration mi : this.motors.values()){
-			clone.motors.put( mi.getID(), mi.clone());
-        }
+
+		// DO NOT UPDATE: 
+		// this.stages and this.motors are updated correctly on their own.
+
 		clone.cachedBounds = this.cachedBounds.clone();
 		clone.modID = this.modID;
 		clone.boundsModID = -1;
diff --git a/core/src/net/sf/openrocket/rocketcomponent/FlightConfigurationSet.java b/core/src/net/sf/openrocket/rocketcomponent/FlightConfigurationSet.java
deleted file mode 100644
index ae0ec8242..000000000
--- a/core/src/net/sf/openrocket/rocketcomponent/FlightConfigurationSet.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package net.sf.openrocket.rocketcomponent;
-
-/**
- * An implementation of FlightConfiguration that fires off events
- * to the rocket components when the parameter value is changed.
- *
- * @param <E>	the parameter type
- */
-public class FlightConfigurationSet extends FlightConfigurableParameterSet<FlightConfiguration> {
-	
-	/**
-	 * Construct a FlightConfiguration that has no overrides.
-	 * 
-	 * @param component		the rocket component on which events are fired when the parameter values are changed
-	 * @param eventType		the event type that will be fired on changes
-	 */
-	public FlightConfigurationSet( RocketComponent component, int eventType, FlightConfiguration _defaultValue) {
-		super( component, eventType, _defaultValue);
-	}
-	
-	
-	/**
-	 * Construct a copy of an existing FlightConfigurationSet
-	 * 
-	 * @param component		the rocket component on which events are fired when the parameter values are changed
-	 * @param eventType		the event type that will be fired on changes
-	 */
-	public FlightConfigurationSet(FlightConfigurationSet configSet, RocketComponent component, int eventType) {
-		super( configSet, component, eventType );
-	}
-	
-	
-
-}
diff --git a/core/src/net/sf/openrocket/rocketcomponent/Rocket.java b/core/src/net/sf/openrocket/rocketcomponent/Rocket.java
index d4ffc9b89..87d96dd7d 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/Rocket.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/Rocket.java
@@ -67,7 +67,7 @@ public class Rocket extends RocketComponent {
 	
 	
 	// Flight configuration list
-	private FlightConfigurationSet configSet;
+	private FlightConfigurableParameterSet<FlightConfiguration> configSet;
 	
 	// Does the rocket have a perfect finish (a notable amount of laminar flow)
 	private boolean perfectFinish = false;
@@ -85,7 +85,7 @@ public class Rocket extends RocketComponent {
 		functionalModID = modID;
 		
 		FlightConfiguration defaultConfiguration = new FlightConfiguration( this, null);
-		this.configSet = new FlightConfigurationSet(this, ComponentChangeEvent.CONFIG_CHANGE, defaultConfiguration);		
+		this.configSet = new FlightConfigurableParameterSet<FlightConfiguration>(this, ComponentChangeEvent.CONFIG_CHANGE, defaultConfiguration);		
 	}
 	
 	public String getDesigner() {
@@ -301,7 +301,7 @@ public class Rocket extends RocketComponent {
 	@Override
 	public Rocket copyWithOriginalID() {
 		Rocket copy = (Rocket) super.copyWithOriginalID();
-		copy.configSet = new FlightConfigurationSet(
+		copy.configSet = new FlightConfigurableParameterSet<FlightConfiguration>(
 				this.configSet, copy, ComponentChangeEvent.CONFIG_CHANGE);
 		copy.resetListeners();
 		
@@ -339,7 +339,7 @@ public class Rocket extends RocketComponent {
 		this.refType = r.refType;
 		this.customReferenceLength = r.customReferenceLength;
 		
-		this.configSet = new FlightConfigurationSet( r.configSet, this, ComponentChangeEvent.CONFIG_CHANGE);
+		this.configSet = new FlightConfigurableParameterSet<FlightConfiguration>( r.configSet, this, ComponentChangeEvent.CONFIG_CHANGE);
 		this.perfectFinish = r.perfectFinish;
 		
 		this.checkComponentStructure();
diff --git a/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java b/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java
index 5fa2d5f48..428bfb341 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java
@@ -1247,21 +1247,21 @@ public abstract class RocketComponent implements ChangeSource, Cloneable, Iterab
 	 *
 	 * @return  Sum of the lengths.
 	 */
-	private final double getTotalLength() {
-		checkState();
-		this.checkComponentStructure();
-		mutex.lock("getTotalLength");
-		try {
-			double l = 0;
-			if (relativePosition == Position.AFTER)
-				l = length;
-			for (int i = 0; i < children.size(); i++)
-				l += children.get(i).getTotalLength();
-			return l;
-		} finally {
-			mutex.unlock("getTotalLength");
-		}
-	}
+//	private final double getTotalLength() {
+//		checkState();
+//		this.checkComponentStructure();
+//		mutex.lock("getTotalLength");
+//		try {
+//			double l = 0;
+//			if (relativePosition == Position.AFTER)
+//				l = length;
+//			for (int i = 0; i < children.size(); i++)
+//				l += children.get(i).getTotalLength();
+//			return l;
+//		} finally {
+//			mutex.unlock("getTotalLength");
+//		}
+//	}
 	
 	
 	/////////// Total mass and CG calculation ////////////
diff --git a/core/test/net/sf/openrocket/rocketcomponent/ParameterSetTest.java b/core/test/net/sf/openrocket/rocketcomponent/ParameterSetTest.java
new file mode 100644
index 000000000..918ae7722
--- /dev/null
+++ b/core/test/net/sf/openrocket/rocketcomponent/ParameterSetTest.java
@@ -0,0 +1,47 @@
+package net.sf.openrocket.rocketcomponent;
+
+//import static org.hamcrest.CoreMatchers.equalTo;
+//import static org.junit.Assert.assertEquals;
+//import static org.junit.Assert.assertThat;
+//import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import net.sf.openrocket.util.MathUtil;
+import net.sf.openrocket.util.StateChangeListener;
+import net.sf.openrocket.util.BaseTestCase.BaseTestCase;
+
+
+public class ParameterSetTest extends BaseTestCase {
+		
+	private final static double EPSILON = MathUtil.EPSILON*1E3; 
+	
+	private class Parameter implements FlightConfigurableParameter<Parameter> {
+		 	
+		public Parameter(){}
+		
+		@Override
+		public Parameter clone(){ return null; }
+		 	
+		@Override
+		public void update(){}
+		 	
+		@Override
+		public void addChangeListener(StateChangeListener listener){}
+			
+		@Override
+		public void removeChangeListener(StateChangeListener listener){} 	
+			
+	};
+	
+	
+	@Test
+	public void testEmptyRocket() {
+		//FlightConfigurableParameterSet<Parameter> testSet = new FlightConfigurableParameterSet<Parameter>();
+		
+		
+	}
+	
+
+	
+}