I had them until I replaced the OEM jacks with the Ground Control system. The pads would not work with the base of the new jacks, but I kept them on the rear stabilizer. Actually, the round pads for the Ground Control are larger than the OEM rectangular pads, so it wasn't a big deal. I mounted the two I couldn't use on my sister's smaller 5'er (which she later sold). I did like the way they spread the load on the ground better than the small feet of the original. With the rubber pads attached, they're less likely to slip on concrete or wood pads.
The first photo is the Ground Control jack pad, the second is the rear stabilizer with the Elephant Pad.
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