I thought I had a line break on my sprinkler system because water constantly running over my curve onto the street. Andy's Sprinkler arrived early 8:30 AM and worked until 3PM without a break. Did pressure test on system and discovered no leak on my sprinkler system. Excess water is running onto my yard from neighbor's sprinkler system. I asked Andy's technician what can I do about the sprinkler nozzles not raising above my grass height? I was told that builders spec in a 4" riser on all their sprinkler systems to cut cost. I replaced my sprinkler heads with 6" riser heads and sprinkler system works best since I purchased new house in 2000. Highly recommend company.