Sorry to hear about that. The jack system is not overly complicated and you should be able to trace the lines to where the leak is occurring. On my rig, the driver side front jack is pretty close to where the pump is. Perhaps with previous moves, something may have worn a hole in one of the lines.
Just as a FYI, all of the Lipper manuals are available online. It helps visualize and understand the system a bit more.
Lippert Support Portal look for "LCI4A3LCD Hydraulic Leveling"