I am in the middle of a master bath remodel. Ever since the plumber came out and extended my pipes so that my sink could be shifted over about 2 feet, whenever we turn on the cold water in our other faucets it will fluctuate between cold and warm water. The master bath plumbing is not hooked up yet. The same day the sink plumbing was extended he also moved our toilet plumbing over about a foot (I could figure out exact inches everything moved if needed). Why is the cold water changing to warm and then going cold and then often back to warm and then finally cold again in our other baths and kitchen? This did not happen before the plumber worked on the master bath.