I used the dura manifolds all last summer they work great.....dura also has pre made ones.....like 3, 4 and 5 i think ....so you can throw 5-7 valves on one manifold and only have to connect a couple of elbows instead of putting a bunch of tees together.
yup i would say pop the top you prob got a rock stuck in that valve for that zone.....seen it a million times.
