I am trying to troubleshoot a charge pressure problem. Warning light blinks on startup. Hydraulics are unresponsive and then safety shutdown occurs. Once in awhile on startup, the hydraulics do kick in and then operation is normal, but lately it takes too many start cycles to make this happen so I think it is time to fix it. I have already switched out the pressure sensor, but no change in behavior. The hydraulic fluid indicator window was completely to the top with fluid so I pumped some out, since the repair manual says incorrect fluid level can cause problems. But that has not helped either. Any suggestions are greatly appreciated.