My system has worked fine for 2 years but now some lines do not spray as far as they use to. Nothing has changed in the water system to the house, or in the house or in the sprinkler system. I am thinking that it is a decrease in the pressure from the water main to the house. I do not know why this would be, it is not time of day dependent and I do not see any obvious changes in the neighborhood. I would like to fix this without major digging. I have an idea that could make one line act like two...
