kerry, very interesting thought! I can replace the pressure vessels for $75. each. That is alot cheaper than the shock. I will look in my shop manuals to see if there is any diagnosis section.
Do you think that the pressure balls have some porting in them? The system on my car is not rock hard as if the balls had no "give" in them from lack of nitrogen. Chris

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My Truck.. 2007 DODGE, 5.9 Cummins, 6spd stick, 4X4. My car..1977 240D, OTHER WHEELS...1955 VW Oval window bug, European Delivery (Holland) with a 1700cc, 2 barrel, Porsche drum brakes. 1939 WILLYS Pick-up. 1967 Triumph 200cc Tiger Cub. 1976 Honda 550F 4cyl Motor Cycle.