I dont do alot of irrigation but the local guys are currently 8 weeks out on service calls, if they even aswer the phone, so a school i do some work for asked if i could help out. The system is around 15- 20 years old and the oldest current employee has only been there for 10 years, so no one has any idea where the valves are. In may two of the valves on the baseball field stopped working and they can't find them. I was called to use a locator to see what if i could find, really the blind leading the blind because i hadnt used one before either, and i didnt get any breaks in the line , it seemed to run all of the way to the end. Is this normal and if not what could cause this? Not sure what locator i was using but i am going back tomorrow for more investigation so i can find out then if it matters.