diff --git a/src/animalposer.cpp b/src/animalposer.cpp
index 53fbfbb4..b6a5fb8c 100644
--- a/src/animalposer.cpp
+++ b/src/animalposer.cpp
@@ -38,15 +38,15 @@ void AnimalPoser::resolveTranslation()
         if (match.hasMatch()) {
             QString name = match.captured(1);
             chains[name].push_back(item.first);
-            qDebug() << "chains[" << name << "]:" << item.first;
+            //qDebug() << "chains[" << name << "]:" << item.first;
         } else {
             match = reSpine.match(item.first);
             if (match.hasMatch()) {
                 QString name = match.captured(1);
                 chains[name].push_back(item.first);
-                qDebug() << "chains[" << name << "]:" << item.first;
+                //qDebug() << "chains[" << name << "]:" << item.first;
             } else if (item.first.startsWith("Virtual_")) {
-                qDebug() << "Ignore connector:" << item.first;
+                //qDebug() << "Ignore connector:" << item.first;
             } else {
                 qDebug() << "Unrecognized bone name:" << item.first;
             }
@@ -56,10 +56,10 @@ void AnimalPoser::resolveTranslation()
         std::sort(chain.second.begin(), chain.second.end(), [](const QString &first, const QString &second) {
             return first < second;
         });
-        qDebug() << "Chain:";
-        for (const auto &chainJoint: chain.second) {
-            qDebug() << chainJoint;
-        }
+        //qDebug() << "Chain:";
+        //for (const auto &chainJoint: chain.second) {
+        //    qDebug() << chainJoint;
+        //}
         resolveChainRotation(chain.second);
     }
 }
@@ -172,7 +172,7 @@ void AnimalPoser::resolveChainRotation(const std::vector<QString> &limbBoneNames
         
         QVector3D targetMiddleBoneStartPosition;
         {
-            qDebug() << beginBoneName << "Angle:" << angleBetweenDistanceAndMiddleBones;
+            //qDebug() << beginBoneName << "Angle:" << angleBetweenDistanceAndMiddleBones;
             auto rotation = QQuaternion::fromAxisAndAngle(matchRotatePlaneNormal, angleBetweenDistanceAndMiddleBones);
             targetMiddleBoneStartPosition = targetEndBoneStartPosition + rotation.rotatedVector(-matchDirectionBetweenBeginAndEndPones).normalized() * targetMiddleBoneLength;
         }
diff --git a/src/animalrigger.cpp b/src/animalrigger.cpp
index 993739a2..bf311878 100644
--- a/src/animalrigger.cpp
+++ b/src/animalrigger.cpp
@@ -407,6 +407,14 @@ bool AnimalRigger::rig()
         }
         
         QVector3D spineBoneHeadPosition = spineNode.position;
+        QVector3D averagePoint = averagePosition(spineBoneVertices);
+        if (isMainBodyVerticalAligned) {
+            //qDebug() << "Update spine position's z from:" << spineBoneHeadPosition.z() << "to:" << averagePoint.z();
+            spineBoneHeadPosition.setZ(averagePoint.z());
+        } else {
+            //qDebug() << "Update spine position's y from:" << spineBoneHeadPosition.y() << "to:" << averagePoint.y();
+            spineBoneHeadPosition.setY(averagePoint.y());
+        }
         
         QString spineName = namingSpine(spineGenerateOrder);
         
@@ -420,7 +428,7 @@ bool AnimalRigger::rig()
         addVerticesToWeights(spineBoneVertices, spineBone.index);
         boneIndexMap[spineBone.name] = spineBone.index;
         
-        qDebug() << "Added spine:" << spineBone.name << "head:" << spineBone.headPosition << "tail:" << spineBone.tailPosition;
+        //qDebug() << "Added spine:" << spineBone.name << "head:" << spineBone.headPosition << "tail:" << spineBone.tailPosition;
         
         if (1 == spineGenerateOrder) {
             m_resultBones[boneIndexMap[Rigger::rootBoneName]].tailPosition = spineBone.headPosition;
@@ -442,7 +450,7 @@ bool AnimalRigger::rig()
             ribBone.index = m_resultBones.size() - 1;
             ribBone.name = namingConnector(spineName, chainName);
             ribBone.headPosition = spineBoneHeadPosition;
-            qDebug() << "Added connector:" << ribBone.name;
+            //qDebug() << "Added connector:" << ribBone.name;
             boneIndexMap[ribBone.name] = ribBone.index;
             if (1 == spineGenerateOrder) {
                 m_resultBones[boneIndexMap[Rigger::rootBoneName]].children.push_back(ribBone.index);
@@ -455,7 +463,7 @@ bool AnimalRigger::rig()
                 m_jointErrorItems.push_back(chainName);
             }
             
-            qDebug() << "Adding chain:" << chainName << " joints:" << jointMarkIndicies.size();
+            //qDebug() << "Adding chain:" << chainName << " joints:" << jointMarkIndicies.size();
             
             int jointGenerateOrder = 1;
             
diff --git a/src/posedocument.cpp b/src/posedocument.cpp
index ea963627..9e605ccb 100644
--- a/src/posedocument.cpp
+++ b/src/posedocument.cpp
@@ -178,13 +178,13 @@ void PoseDocument::updateRigBones(const std::vector<RiggerBone> *rigBones, const
     auto &bonesPart = partMap[m_bonesPartId];
     bonesPart.id = m_bonesPartId;
     
-    qDebug() << "rigBones size:" << rigBones->size();
+    //qDebug() << "rigBones size:" << rigBones->size();
     
     std::vector<std::pair<int, int>> edgePairs;
     for (size_t i = m_hideRootAndVirtual ? 1 : 0; i < rigBones->size(); ++i) {
         const auto &bone = (*rigBones)[i];
         for (const auto &child: bone.children) {
-            qDebug() << "Add pair:" << bone.name << "->" << (*rigBones)[child].name;
+            //qDebug() << "Add pair:" << bone.name << "->" << (*rigBones)[child].name;
             edgePairs.push_back({i, child});
         }
     }
@@ -272,7 +272,7 @@ void PoseDocument::updateRigBones(const std::vector<RiggerBone> *rigBones, const
             nodeMap[firstNodeId].edgeIds.push_back(edge.id);
             nodeMap[node.id].edgeIds.push_back(edge.id);
             
-            qDebug() << "Add pair:" << bone.name << "->" << "~";
+            //qDebug() << "Add pair:" << bone.name << "->" << "~";
             continue;
         }
         for (const auto &child: bone.children) {