I have just moved to a house which is a bit of a wreck (because of the building work I'm having done.) However the one room of the house that was nicely done was the bathroom. The problem I'm having is despite my best effort of stopping dust getting in there, the mixer taps it feels gritty when operating the tap (it was fine when I moved in). It is one of these Crosswater taps. Is the tap a write off, are they easy to clean out if small debris gets in?