I replaced the aerator from my kitchen faucet - which is a single-handle gooseneck fixture with a sprayer. Ever since I replaced the aerator the sink now "thunks" every time I turn it on. On top of that, when I turn the sink off, water continues to dribble out of the faucet for another second or two, which never happened before. Is all of this related to the new aerator? And, if so, how can I fix it?