I’m currently using my Netro spark 16 to water a 1 1/2 acre field of grass. There are a couple zones that are repeatedly watering for just a few seconds or a couple minutes when they are supposed to be watering for 6 to 10 minutes. It is causing a very big issue in the field. There are a large bare spots that are directly around the problematic zones. Is there any fix to this? I need answers ASAP.