Today I inspected the customer’s bathroom faucet and found both hot and cold handles difficult to operate and not shutting off properly. Upon disassembly, I found worn internal stem assemblies, as well as deteriorated seats and springs inside the valve bodies. These components are responsible for sealing the faucet and controlling water flow, when worn, they cause dripping, stiffness and inconsistent performance. I removed the old stems and extracted all worn seats and springs. I installed new Delta RP25513 stem assemblies along With new Delta RP 4993 rubber seats and stainless steel springs on both sides. I cleaned the inside of each valve body, reassembled the faucet, and tested operation. The faucet is not shutting off properly, handles, turn smoothly, and there are no visible leaks at this time