i am trying to set the flow control on a set of these valve but am having no success. Directions say to have the flow control turned off, turn the bled screw counterclockwise to turn the water on, adjust the flow control and then tighten (clockwise) the bleed screw to turn the water off. The flow does nothing when the bleed screw has the water on and tightening it does not shut the water off. The timer will turn the station on and off. Does the value have a problem?