diff --git a/examples/circleStack.js b/examples/circleStack.js
index 9065ddfe..5b900944 100644
--- a/examples/circleStack.js
+++ b/examples/circleStack.js
@@ -8,11 +8,11 @@
         var engine = demo.engine,
             world = engine.world;
         
-        var stack = Composites.stack(100, 100, 10, 10, 20, 0, function(x, y) {
+        var stack = Composites.stack(100, 185, 10, 10, 20, 0, function(x, y) {
             return Bodies.circle(x, y, 20);
         });
         
         World.add(world, stack);
     };
 
-})();
\ No newline at end of file
+})();
diff --git a/examples/compoundStack.js b/examples/compoundStack.js
index 991a9188..f850760a 100644
--- a/examples/compoundStack.js
+++ b/examples/compoundStack.js
@@ -10,7 +10,7 @@
             world = engine.world,
             size = 50;
 
-        var stack = Composites.stack(100, 220, 12, 6, 0, 0, function(x, y) {
+        var stack = Composites.stack(100, 280, 12, 6, 0, 0, function(x, y) {
             var partA = Bodies.rectangle(x, y, size, size / 5),
                 partB = Bodies.rectangle(x, y, size / 5, size, { render: partA.render });
 
@@ -22,4 +22,4 @@
         World.add(world, stack);
     };
 
-})();
\ No newline at end of file
+})();
diff --git a/examples/softBody.js b/examples/softBody.js
index 8415c909..df3d7446 100644
--- a/examples/softBody.js
+++ b/examples/softBody.js
@@ -15,7 +15,7 @@
 
         World.add(world, [
             Composites.softBody(250, 100, 5, 5, 0, 0, true, 18, particleOptions),
-            Composites.softBody(250, 300, 8, 3, 0, 0, true, 15, particleOptions),
+            Composites.softBody(400, 300, 8, 3, 0, 0, true, 15, particleOptions),
             Composites.softBody(250, 400, 4, 4, 0, 0, true, 15, particleOptions)
         ]);
 
@@ -23,4 +23,4 @@
         renderOptions.showAngleIndicator = false;
     };
 
-})();
\ No newline at end of file
+})();
diff --git a/examples/stack.js b/examples/stack.js
index c5c33d01..8dcdfc7d 100644
--- a/examples/stack.js
+++ b/examples/stack.js
@@ -8,11 +8,11 @@
         var engine = demo.engine,
             world = engine.world;
         
-        var stack = Composites.stack(100, 300, 10, 5, 0, 0, function(x, y) {
+        var stack = Composites.stack(100, 380, 10, 5, 0, 0, function(x, y) {
             return Bodies.rectangle(x, y, 40, 40);
         });
         
         World.add(world, stack);
     };
 
-})();
\ No newline at end of file
+})();
diff --git a/src/factory/Composites.js b/src/factory/Composites.js
index e86c5817..a13e330c 100644
--- a/src/factory/Composites.js
+++ b/src/factory/Composites.js
@@ -213,7 +213,7 @@ var Bodies = require('./Bodies');
         for (var i = 0; i < number; i++) {
             var separation = 1.9,
                 circle = Bodies.circle(xx + i * (size * separation), yy + length, size, 
-                            { inertia: 99999, restitution: 1, friction: 0, frictionAir: 0.0001, slop: 0.01 }),
+                            { inertia: Infinity, restitution: 1, friction: 0, frictionAir: 0.0001, slop: 1 }),
                 constraint = Constraint.create({ pointA: { x: xx + i * (size * separation), y: yy }, bodyB: circle });
 
             Composite.addBody(newtonsCradle, circle);
diff --git a/src/render/Render.js b/src/render/Render.js
index efa9da12..e8f29bde 100644
--- a/src/render/Render.js
+++ b/src/render/Render.js
@@ -434,6 +434,9 @@ var Vector = require('../geometry/Vector');
             for (k = body.parts.length > 1 ? 1 : 0; k < body.parts.length; k++) {
                 part = body.parts[k];
 
+                if (!part.render.visible)
+                    continue;
+
                 if (part.render.sprite && part.render.sprite.texture && !options.wireframes) {
                     // part sprite
                     var sprite = part.render.sprite,