I have an 89 YJ with a year old set of 4-inch lift springs. The front springs have softened up nicely and sagged about an inch and a halft, but the rear springs have only sagged about 1/2 an inch. How can I level the Jeep out? I don't want to have to replace the front springs, and I don't like the idea of an add-a-leaf because it hinders axle articulation. Can I take a leaf out of the rear spring pack? It only has four leafs to begin with. If I do take one out, which one do I remove?