Ace Pelizon Plumbing was called out on a leaking hot side faucet. Ace Pelizon Plumbing found master bath faucet leaking from hot side and not turning off. Ace Pelizon Plumbing will shut water off to fixture and replace hot stem at this time. Restored water to fixture and verified function on site with customer. Explained that hard water grit is building up inside ceramic discs and making them difficult to turn.