I forgot to add one more thing to the plumbing entry.. I have a leaky sink or at least a drippy sink. I was telling my language teacher about it and as I was explaining it she told me that in fact my sink was not leaking.. but that I had a "trickle".. A "leak" means something that shouldn't happen naturally. I thought the sink shouldn't "trickle" naturally when I shut it off, so that's why I thought it was a "leak."