You adjusted the spray so that it would cover more than 180 degrees, and through head to head coverage, you were able to get enough water behind (street-side) the sprinkler heads? It seems like it might work; have you had success this way? I'm currently trying to get a variance or other exemption from this silly rule. But if you have a way around it, that actually works (not just on paper!), then that may be the simplest approach. Thanks,