I had the same problem after running over a curb. Bent the two rear jacks on one side really bad. I took it to a semi-trailer repair shop and they straightened both back straight in about ten minutes. They even hammered the pads back flat. One jack was leaking and they tightened up the packing seal gland and stopped the leak. I raise all the rear jacks two bolt holes (it took about 45 minutes) I then bought Andersen Blocks and use them on the four rear jacks. They work great and no more worries about hitting them again.