I'm having an issue with connecting welded parts. If I use a welded part as the initial part in the assembly then everything is fine, but if I add a welded part, there are a number of times I'm unable to connect that part to any existing nodes. Here is a screenshot showing that both parts have nodes. Here are links to two of my welded parts that have the issue http://pastebin.com/eq5zsNPY http://pastebin.com/HXjcX90T