diff --git a/core/src/net/sf/openrocket/rocketcomponent/Streamer.java b/core/src/net/sf/openrocket/rocketcomponent/Streamer.java
index c7498a1be..c1856d78e 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/Streamer.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/Streamer.java
@@ -40,7 +40,7 @@ public class Streamer extends RecoveryDevice {
 		if (MathUtil.equals(this.stripLength, stripLength))
 			return;
 		this.stripLength = stripLength;
-		clearPreset();
+//		clearPreset();
 		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
 	}
 	
@@ -95,6 +95,7 @@ public class Streamer extends RecoveryDevice {
 		double area = getArea();
 		stripWidth = MathUtil.safeSqrt(area / ratio);
 		stripLength = ratio * stripWidth;
+		clearPreset();
 		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
 	}
 	
@@ -117,6 +118,7 @@ public class Streamer extends RecoveryDevice {
 		double ratio = Math.max(getAspectRatio(), 0.01);
 		stripWidth = MathUtil.safeSqrt(area / ratio);
 		stripLength = ratio * stripWidth;
+		clearPreset();
 		fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
 	}
 	
@@ -136,6 +138,14 @@ public class Streamer extends RecoveryDevice {
 		if ( preset.has(ComponentPreset.WIDTH)) {
 			this.stripWidth = preset.get(ComponentPreset.WIDTH);
 		}
+		//	Set Cd value when preset is selected after manual Cd change
+		double density = this.getMaterial().getDensity();
+		double cd;
+		cd = 0.034 * ((density + 0.025) / 0.105) * (stripLength + 1) / stripLength;
+		cd = MathUtil.min(cd, MAX_COMPUTED_CD);
+ 		this.cd = cd;
+		this.cdAutomatic = true;
+
 		super.loadFromPreset(preset);
 		// Fix the length to the stripWidth since RocketComponent assigns ComponentPreset.LENGTH to length.
 		this.length = this.stripWidth;
@@ -146,8 +156,7 @@ public class Streamer extends RecoveryDevice {
 	@Override
 	public double getComponentCD(double mach) {
 		double density = this.getMaterial().getDensity();
-		double cd;
-		
+		double cd;	
 		cd = 0.034 * ((density + 0.025) / 0.105) * (stripLength + 1) / stripLength;
 		cd = MathUtil.min(cd, MAX_COMPUTED_CD);
 		return cd;