diff --git a/CruiseControlMX5.pde b/CruiseControlMX5.pde
index 5aaf739..d5195c4 100644
--- a/CruiseControlMX5.pde
+++ b/CruiseControlMX5.pde
@@ -10,9 +10,9 @@ import java.util.regex.Pattern;
 
 static final Pattern FLOAT_REGEX = Pattern.compile("^-?(?:0|[1-9]\\d*)(?:\\.\\d+)?$");
 
-static final String COM_PORT = "COM5";
+static final String COM_PORT = "COM4";
 static final int speedStart = 0, speedEnd = 240;
-static final int minSampleSize = 50, maxSampleSize = 600;
+static final int minSampleSize = 50, maxSampleSize = 1000;
 static final float minTimeSpan = 5F, maxTimeSpan = 60F;
 
 static final float[] graphPos = new float[2];
@@ -44,15 +44,14 @@ float timeSpan;
 
 boolean showError = true, showIntegral = true, showDerivative = true, showSpeed, showAcceleration, showServo;
 boolean autoScaleError, autoScaleIntegral = true, autoScaleDerivative = true, autoScaleSpeed, autoScaleAcceleration = true, autoScaleServo = true;
-float errorRangeMin = -3F, errorRangeMax = 3F, integralRangeMin = Float.NaN, integralRangeMax = Float.NaN, derivativeRangeMin = Float.NaN, derivativeRangeMax = Float.NaN, speedRangeMin = 0F, speedRangeMax = 150F, accelerationRangeMin = Float.NaN, accelerationRangeMax = Float.NaN;
-int servoRangeMin = 1170, servoRangeMax = 1970;
+float errorRangeMin = -5F, errorRangeMax = 5F, integralRangeMin = -200, integralRangeMax = 200, derivativeRangeMin = Float.NaN, derivativeRangeMax = Float.NaN, speedRangeMin = 0F, speedRangeMax = 150F, accelerationRangeMin = Float.NaN, accelerationRangeMax = Float.NaN;
+int servoRangeMin = Integer.MIN_VALUE, servoRangeMax = Integer.MIN_VALUE;
 boolean sampleOrTimeGraph = false;
 boolean drawSmoothCurves;
 
 
 void setup() {
   size(1600, 512);
-  pixelDensity(displayDensity());
 
   windowTitle("Cruise Controller MX5");