I have a 2004 Fleetwood Pace Arrow. When I first bought it 3 years ago, the leveling jacks could lift the wheels off of the ground. Now it struggles to level the coach and sometimes will not even level it. What can I do? In addition, one of the springs on the jack is broken and I cannot find a place to get a replacement spring. Any Ideas? I do not know where to look to get the part number for the spring. Any help in this area would be appreciated.