Help! On manual the sprinkler system will run at full pressure but when on the timer it will not fully pressurize any of the zones. We have corrected grounding issues, tried a new timer, ops checked each individual solenoid and they all powered up. The only thing we haven't done is removed the caps and individually clean each of the diaphragms because it seems if that were the problem it would be the same problem on manual and timer. We have had multiple sprinkler people work on it without succe...
