Customer states he is having low pressure in the system. The psi at the house is only 30. I have reason to believe the pressure regulator is bad, as well the homeowner shut off valve is really rusty. Before I determine what to do with the valves and sprinklers. Also zone 3 valve is bad, looks like a mouse or something chewed up the wire too close to solenoid to repair. After fixing pressure issues I found 8 total heads I would recommend replacing.