Well, let's take a stab at it. Yes, Versalift guy is likely correct, most manufacturers now days don't support product that goes back X number of years, there's not enough of those models still out there for them to support parts on their shelf that never move, obsolete. Second, if i's leaking at the ends of the solenoids where those red manual operation buttons are located, likely true there is no fix, many of those solenoids are not serviceable requiring replacement. And what the Versalift gentleman was referring to is what's known as "open center" valves. Typically, gear pumps and other positive displacement pumps require open center valves whereas variable displacement pumps (hydrostat) use closed center valves. If no replacement valves are available from Versalift then I suggest you take your assembly to a local hydraulic pump shop and have them source a suitable replacement valve stack. They should have the experience to source what you need. And yes, it's going to cost you some coin. But it will be money well spent if you wish to get the unit going. If you try to wing it and find what you need you'll end up contemplating commiting suicide trying to match up something that will work. Nope, not worth the hassle, go to someone who does this stuff daily. Only thing I can add, those red manual push buttons on the ends of the solenoids, that's a must on your machine and a must on any replacement, those push buttons is how you manually work the boom functions to get a man down if the electrical system goes south.
