We probably have the same system on our 2004 Marquis Sapphire. When you leveled with the hydraulic jacks, did you do so with manual or auto mode?
I don't use hydraulic leveling much but I almost always use auto leveling mode whether by using air or hydraulic leveling. The front jack should touch down first and raise the coach's nose a few inches, followed shortly thereafter by the two rear jacks touching down. The nose, after raising a few inches, will not go down... only up later if it needs to raise the nose more. Then the system proceeds to perform its leveling by raising the rear or front, whichever is needed, and raising the left or right sides, whichever is needed.
Does this sound similar to the way yours operates?