I just installed a Rainbird Irrigation system in my soon to be grassy back yard, and noticed that I get a constant drip out of one of the sprinkler heads. Now, my backyard is on a slight slope, and this is the furthest from the top, where the regulators are. And non of the other sprinklers seem too leek or drip. Am I correct in thinking that it's just the back pressure of the water still in the pipes that's slowly draining itself through the lowest sprinkler?

Or am I missing something?

Help?

P.