Well I have updated my valves to the Weathermatic Nitro 1" series (from sprinklerwarehouse) and I am very happy. These valves have a flow control knob that allows you to turn the flow down to 1 gallon per hour (very very tiny amount) and still have the valve operate correctly. Most of the valves I looked at were 1 to 2 gallons per minute, with a few as low as .2 gallons per minute. Not low enough for a zone with only a few drippers.
Now my drippers and valves are working perfectly! I have recently installed a nice new patio (25 x 34 ft) and all the plants around the perimeter as well as the potted plants get just the water they need from my built in irrigation system.