The kitchen sink faucet has low pressure on the hot side only. After removing and examining the shutoff valves below, it was discovered that gasket inside the hot water valve was missing a piece. The valves were replaced using new quarter turn ball valves. The missing piece of gasket is lodged somewhere between the hot water valve and the faucet cartridge. Southside Plumbing made an attempt to remove the piece of gasket from the flex hose by blowing down into the line with compressed air. We were unsuccessful in removing the piece from the hot line And the faucet will have to be replaced.