After setting the Actuators to bleed mode we (Eric & I) powered down the Pump Stations, took fluid samples to look for gross things, restarted just a single pump and set the servo to low pressure (80psi down to 15PSI).  Then one by one, opened the valves to the actuators while watching the pressure changes.  Servo worked as expected throttling back the pump as the pressure increased going to the Actuators.  We monitored for leaks real time and found nothing.  After half the valves were opened, we upped the pressure to 30psi and checked for leaks again.  Still all good.  We final opened up the remaining four valves checking for leaks as we went.

So far all's well--no leaks, servo functioning.