diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 96882c90..e6ba8f7f 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -138,10 +138,8 @@ MainWindow::MainWindow()
     saveAct->setStatusTip(tr("Save the document to disk"));
     connect(saveAct, &QAction::triggered, this, &MainWindow::save);
     
-    QAction *exitAct = new QAction(tr("E&xit"), this);
-    exitAct->setShortcuts(QKeySequence::Quit);
-    exitAct->setStatusTip(tr("Exit the application"));
-    connect(exitAct, &QAction::triggered, this, &QWidget::close);
+    QAction *exportAct = new QAction(tr("E&xport.."), this);
+    connect(exportAct, &QAction::triggered, this, &MainWindow::exportModel);
     
     QAction *undoAct = new QAction(tr("&Undo"), this);
     undoAct->setShortcuts(QKeySequence::Undo);
@@ -179,7 +177,7 @@ MainWindow::MainWindow()
     fileMenu->addAction(openAct);
     fileMenu->addAction(saveAct);
     fileMenu->addSeparator();
-    fileMenu->addAction(exitAct);
+    fileMenu->addAction(exportAct);
 
     QMenu *editMenu = menuBar()->addMenu(tr("&Edit"));
     editMenu->addAction(undoAct);
diff --git a/src/skeletoneditgraphicsview.cpp b/src/skeletoneditgraphicsview.cpp
index 521f2b5d..accba1cf 100644
--- a/src/skeletoneditgraphicsview.cpp
+++ b/src/skeletoneditgraphicsview.cpp
@@ -2,6 +2,7 @@
 #include <QXmlStreamWriter>
 #include <QFile>
 #include <QApplication>
+#include <QGuiApplication>
 #include <cmath>
 #include <map>
 #include <vector>
@@ -152,6 +153,7 @@ void SkeletonEditGraphicsView::removeSelectedItems()
     if (m_nextStartNodeItem) {
         SkeletonEditNodeItem *nodeItem = m_nextStartNodeItem;
         setNextStartNodeItem(NULL);
+        removeNodeItem(nodeItem->nextSidePair());
         removeNodeItem(nodeItem);
         emit nodesChanged();
     }
@@ -401,13 +403,18 @@ void SkeletonEditGraphicsView::wheelEvent(QWheelEvent *event)
     if (!m_backgroundLoaded)
         return;
     qreal delta = event->delta() / 10;
-    if (fabs(delta) < 1)
-        delta = delta < 0 ? -1.0 : 1.0;
+    if (QGuiApplication::queryKeyboardModifiers().testFlag(Qt::ShiftModifier)) {
+        if (delta > 0)
+            delta = 1;
+        else
+            delta = -1;
+    } else {
+        if (fabs(delta) < 1)
+            delta = delta < 0 ? -1.0 : 1.0;
+    }
     AddItemRadius(m_pendingNodeItem, delta);
     if (!m_inAddNodeMode && m_lastHoverNodeItem) {
-        //if (canAddItemRadius(m_lastHoverNodeItem, delta)) {
-            AddItemRadius(m_lastHoverNodeItem, delta);
-        //}
+        AddItemRadius(m_lastHoverNodeItem, delta);
         emit nodesChanged();
     }
 }
diff --git a/src/skeletontomesh.cpp b/src/skeletontomesh.cpp
index 21b8cad3..1501f9d1 100644
--- a/src/skeletontomesh.cpp
+++ b/src/skeletontomesh.cpp
@@ -244,6 +244,8 @@ void SkeletonToMesh::process()
         SkeletonSnapshot *skeleton = &groups[i];
         QRectF front = skeleton->boundingBoxFront();
         QRectF side = skeleton->boundingBoxSide();
+        float canvasWidth = skeleton->canvas["width"].toFloat();
+        float canvasHeight = skeleton->canvas["height"].toFloat();
         
         std::map<QString, int> bmeshNodeMap;
         
@@ -255,11 +257,11 @@ void SkeletonToMesh::process()
             std::map<QString, std::map<QString, QString>>::iterator nextSidePair = skeleton->nodes.find(nodeIterator->second["nextSidePair"]);
             if (nextSidePair == skeleton->nodes.end())
                 continue;
-            float x = (nodeIterator->second["x"].toFloat() - front.left() - front.height() / 2) / front.height();
-            float y = (nodeIterator->second["y"].toFloat() - front.top() - front.height() / 2) / front.height();
-            float z = (nextSidePair->second["x"].toFloat() - side.left() - side.width() / 2) / side.height();
-            float r = nodeIterator->second["radius"].toFloat() / front.height();
-            float t = nextSidePair->second["radius"].toFloat() / side.height();
+            float x = (nodeIterator->second["x"].toFloat() - front.left()) / canvasHeight;
+            float y = (nodeIterator->second["y"].toFloat()) / canvasHeight;
+            float z = (nextSidePair->second["x"].toFloat() - side.left()) / canvasHeight;
+            float r = nodeIterator->second["radius"].toFloat() / canvasHeight;
+            float t = nextSidePair->second["radius"].toFloat() / canvasHeight;
             int bmeshNodeId = meshlite_bmesh_add_node(meshliteContext, bmeshId, x, y, z, r, t);
             printf("meshlite_bmesh_add_node x:%f y:%f z:%f r:%f t:%f nodeName:%s bmeshNodeId:%d\n", x, y, z, r, t, nodeIterator->first.toUtf8().constData(), bmeshNodeId);
             bmeshNodeMap[nodeIterator->first] = bmeshNodeId;