I serviced one of our 90 zoners (WM solenoids down, of course) and wondered how often you all service the regular clients? Our RM clocks note the time & day of the up/low limit, but, if no one reads the faults, it's moot. The zones had been down for a month, lawn jockey had our #, never called, finally the client tracked me down & I went out.......desert...turf thinking it's winter. Do you depend on the mow crew/client, or do you have a regular "stop-by" schedule? Do you look at every head in the system? Do you know where every valve box is/was?