Since were on the subject, my stopper has three holes, but I don't plan on placing a third line for filling. It came with two brass pipes, the clunk(sp?), and some tubing. Any idea? it is a Duo-Bro brand. Also the plug is made of a rubber, but it came with two plastic pieces that seem to fit in somewhere as well. I didn't have directions to go from so any help is appreciated (yes I checked Du-Bros website, but it was almost useless).