Just this morning, I was turning off the cold water at my upstairs sink, and turned the faucet handle a little too far. The water surged back to life, so I brought the handle around for another turn - the water lost some flow, but would not shut off.
Water continued to pour from the faucet until I had time to limp downstairs (my month-old ankle sprain still causing some occasional tenderness) and grab the Robogrip and return to shut off the cutoff valve.
Haven’t had time to really look at it, had to get to work - but what kind of problems might I expect to have caused this? Stuff I can fix all by my lonsome, or will I have to recruit a plumber?