WOW I can sure use some help here on this one. My left side stabilizer drifts down in a matter of minutes. I replaced the packings in the cyclinder and removed opposite line no fluid coming out so the cyclinder is ruled out. I need to know how the fluid flows in the valve. I believe there only a couple o-rings from the bottom, I can access thru a cap from the bottom. Was thinking to try and take the spool out the top and check that out. Also got a price from local guys wow that hurts. My machine is 1980 Ford 555. Any help would be greatly appreciated. Thanks