Those instructions worked like a charm...I pinched the line at the valve and it stopped the leak..It was one of the main retract cylinders. Pulled the right wing off and pinched both lines, it was still going. Took the left wing off, pinched the down line and it stopped the leak. Lubed it with the BVM lube ..no more leak. Retracts, doors, everything works perfect...Thanks for all the help, just saved me some hours of frustration...