picked up this place the other day. its a big old place on the ocean with a beautiful garden. we spent the day adding, moving, and raising heads that the previous co. was too lazy to do. We re nozzled a lot of heads on zones that had all 3 gpm. the place is probably 2.5 acres and i am worried because i only found 4 valves out of 14. I was getting a lot of static on the 521 from the electric panel I think, its right next to the clock.