I bought this volcano used. It works great for making vapor!! But... i have to tape the chamber to the base, or hold it there while it fills up. I know that's not how it is supposed to work. The person I bought it from mentioned what piece was broken, but I forgot... and it has been several years so no way to ask again. I've just been dealing with it, but ready to finally fix it. What piece(s) do I need to order to fix it? It has to be a very simple fix since otherwise it is amazing. I'm probably going to kick myself for waiting so long to fix it and wasting so much tape.