private void init(bool start)
        {
            if (initialized)
            {
                return;
            }
            initialized = true;

            topNodeNames    = SSTUUtils.parseCSV(topManagedNodes);
            bottomNodeNames = SSTUUtils.parseCSV(bottomManagedNodes);
            ConfigNode node = SSTUConfigNodeUtils.parseConfigNode(configNodeData);

            coreModules = SingleModelData.parseModels(node.GetNodes("CORE"));

            List <ConfigNode> tops    = new List <ConfigNode>();
            List <ConfigNode> bottoms = new List <ConfigNode>();

            ConfigNode[] mNodes = node.GetNodes("CAP");
            ConfigNode   mNode;
            int          len = mNodes.Length;

            for (int i = 0; i < len; i++)
            {
                mNode = mNodes[i];
                if (mNode.GetBoolValue("useForTop", true))
                {
                    tops.Add(mNode);
                }
                if (mNode.GetBoolValue("useForBottom", true))
                {
                    bottoms.Add(mNode);
                }
            }
            topModules    = SingleModelData.parseModels(tops.ToArray());
            bottomModules = SingleModelData.parseModels(bottoms.ToArray());
            tops.Clear();
            bottoms.Clear();

            mNodes = node.GetNodes("DOCK");
            len    = mNodes.Length;
            for (int i = 0; i < len; i++)
            {
                mNode = mNodes[i];
                if (mNode.GetBoolValue("useForTop", true))
                {
                    tops.Add(mNode);
                }
                if (mNode.GetBoolValue("useForBottom", true))
                {
                    bottoms.Add(mNode);
                }
            }
            topDockModules    = SingleModelData.parseModels(tops.ToArray());
            bottomDockModules = SingleModelData.parseModels(bottoms.ToArray());
            tops.Clear();
            bottoms.Clear();

            mNodes       = node.GetNodes("SOLAR");
            len          = mNodes.Length;
            solarModules = new SolarData[len];
            for (int i = 0; i < len; i++)
            {
                mNode           = mNodes[i];
                solarModules[i] = new SolarData(mNode);
            }

            topDockModule    = SingleModelData.findModel(topDockModules, currentTopDock);
            topModule        = SingleModelData.findModel(topModules, currentTop);
            coreModule       = SingleModelData.findModel(coreModules, currentCore);
            bottomModule     = SingleModelData.findModel(bottomModules, currentBottom);
            bottomDockModule = SingleModelData.findModel(bottomDockModules, currentBottomDock);
            solarModule      = Array.Find(solarModules, m => m.name == currentSolar);//TODO cleanup

            //validate selections for sub-modules that may require unlocks
            if (HighLogic.LoadedSceneIsEditor || HighLogic.LoadedSceneIsFlight)
            {
                if (!topDockModule.isAvailable(upgradesApplied))
                {
                    topDockModule = Array.Find(topDockModules, m => m.isAvailable(upgradesApplied));
                }
                if (!bottomDockModule.isAvailable(upgradesApplied))
                {
                    bottomDockModule = Array.Find(bottomDockModules, m => m.isAvailable(upgradesApplied));
                }
                if (!solarModule.isAvailable(this))
                {
                    solarModule = Array.Find(solarModules, m => m.isAvailable(this));
                }
                currentTopDock    = topDockModule.name;
                currentBottomDock = bottomDockModule.name;
                currentSolar      = solarModule.name;
            }

            if (!topModule.isValidTextureSet(currentTopTexture))
            {
                currentTopTexture = topModule.getDefaultTextureSet();
            }
            if (!coreModule.isValidTextureSet(currentCoreTexture))
            {
                currentCoreTexture = coreModule.getDefaultTextureSet();
            }
            if (!bottomModule.isValidTextureSet(currentBottomTexture))
            {
                currentBottomTexture = bottomModule.getDefaultTextureSet();
            }

            restoreModels();
            updateModulePositions();
            updateMass();
            updateCost();
            updateAttachNodes(false);
            if (HighLogic.LoadedSceneIsEditor || HighLogic.LoadedSceneIsFlight)
            {
                ModuleDockingNode[] mdns = part.GetComponents <ModuleDockingNode>();
                if (mdns.Length > 0)
                {
                    if (topDockModule.model != null)
                    {
                        topDockPartModule = mdns[0];
                    }
                    if (bottomDockModule.model != null)
                    {
                        bottomDockPartModule = mdns.Length > 1 ? mdns[1] : mdns[0];
                    }
                }
                updateDockingModules(start);
            }
            //resources are updated in Start(), to ensure that the dependent modules have loaded
        }