For about a year, our faucets spit and spit. Pressure is fine. City water. Two times, I have opened all of the faucets, (including running the washer, dishwasher, getting water from the fridge) and shut off the Main Water Supply. Both times, it did not work and the spitting continued. Will this hurt my pipes and is there anything else I can do to fix this annoying problem? Thanks for any tips.