diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 4b82279..64f205d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -58,6 +58,7 @@
 import com.android.systemui.statusbar.KeyguardAffordanceView;
 import com.android.systemui.statusbar.NotificationData;
 import com.android.systemui.statusbar.StatusBarState;
+import com.android.systemui.statusbar.notification.NotificationUtils;
 import com.android.systemui.statusbar.policy.HeadsUpManager;
 import com.android.systemui.statusbar.policy.KeyguardUserSwitcher;
 import com.android.systemui.statusbar.stack.NotificationStackScrollLayout;
@@ -78,7 +79,6 @@
     private static final int CAP_HEIGHT = 1456;
     private static final int FONT_HEIGHT = 2163;
 
-    private static final float HEADER_RUBBERBAND_FACTOR = 2.05f;
     private static final float LOCK_ICON_ACTIVE_SCALE = 1.2f;
 
     private static final String COUNTER_PANEL_OPEN = "panel_open";
@@ -1376,8 +1376,7 @@
         int min = mStatusBarMinHeight;
         if (mStatusBar.getBarState() != StatusBarState.KEYGUARD
                 && mNotificationStackScroller.getNotGoneChildCount() == 0) {
-            int minHeight = (int) ((mQsMinExpansionHeight + getOverExpansionAmount())
-                    * HEADER_RUBBERBAND_FACTOR);
+            int minHeight = (int) (mQsMinExpansionHeight + getOverExpansionAmount());
             min = Math.max(min, minHeight);
         }
         int maxHeight;
@@ -1552,15 +1551,8 @@
         if (mStatusBar.getBarState() == StatusBarState.KEYGUARD) {
             return 0;
         }
-        if (mNotificationStackScroller.getNotGoneChildCount() == 0) {
-            return Math.min(0, mExpandedHeight / HEADER_RUBBERBAND_FACTOR - mQsMinExpansionHeight);
-        }
-        float stackTranslation = mNotificationStackScroller.getStackTranslation();
-        float translation = stackTranslation / HEADER_RUBBERBAND_FACTOR;
-        if (mHeadsUpManager.hasPinnedHeadsUp() || mIsExpansionFromHeadsUp) {
-            translation = mNotificationStackScroller.getTopPadding() + stackTranslation
-                    - mQsMinExpansionHeight;
-        }
+        float translation = NotificationUtils.interpolate(-mQsMinExpansionHeight, 0,
+                mNotificationStackScroller.getAppearFraction(mExpandedHeight));
         return Math.min(0, translation);
     }
 
@@ -1968,7 +1960,7 @@
         if (mNotificationStackScroller.getNotGoneChildCount() > 0) {
             return mNotificationStackScroller.getPeekHeight();
         } else {
-            return mQsMinExpansionHeight * HEADER_RUBBERBAND_FACTOR;
+            return mQsMinExpansionHeight;
         }
     }