I have finally, after 4 years of begging, gotten a commercial property owner to allow me to service the irrigation system. I have maintained everything on the property except the irrigation for 6 seasons now. I have a general knowledge of irrigation systems, but I'm no expert. Here is what I know: * I estimate there are 25 zones with 8 to 12 heads per zone * I know for sure, at this point, there are 17 heads which needs to be replaced * I know the controller is messed up. The system is supposed to run early morning, but it currently fires around 1PM. Here what I need to know: * What and how should I charge to change heads? * What and how should I charge to manually fire the system to see if any other heads are broken and to realign any heads needing it? * Should I set the system to water a shorter time but twice a day? I am in Southeast Kansas (Pittsburg) where the summers get hot (100+) and I have typically lost grass in the summers. Thanks in advance for your thoughts and experience!