Replaced taps on bathroom sink and bath yesterday - just the handle bit, not the whole tap itself. Hot water taps are fine but bath cold water tap has a much reduced flow and sink cold water tap dribbles out and then stops! Water for these taps is supplied by a water tank. Any ideas what is wrong? I\\\'ve had to switch off the water to the bathroom before and whilst it did take a couple of hours to get back to normal, it did!