While chasing down a pressure drop/water leak on the roof of our self serve wash we found a busted hose near this manifold (believe that’s what it’s called?). We are replace the supply line from the cat pump up to the roof and the whip from the manifold to the top of the boom. In you personal experience should I change out the check valves while it’s broke down? What about the push on connections for chemical supply lines, would you change those as well?