Doing the walkthrough on a troubleshoot i just finished and the valve for station 28 wont come on at all. New solenoid and innerds and it won't work from the clock. The landscape mgmt. guy thought that it was electrical and i said no, my notes said 28 had 41.8 R - 25.4 E - .237 I, it had to be hydraulic. Seems this valve had a pressure regulator originally and when it was removed a screw wasn't removed from the solenoid port. Once the screw was removed the valve worked without issue. If i hadn't kept records of my measurements and believed in them, we could have been chasing our own tails for hours on this (20 acre) site.