We live in an old mobile home that has two baths with showers. The water flow from the faucets in one of the baths has always been weak, but now it just dribbles. All the other faucets in the home run fine including the other bath/shower. My thinking is that the slow one is clogged up with lime deposits since both the hot and cold water now dribbles. If this is the case, am I looking at a major repair job? Thanks!