Still need a camper jack(s)

I have everything I need for my camper. Still in need of 1 (or 2) camper jacks. I have three that work great (and gets camper on and off ok). But one is frozen. I'm going to rip it apart and see if I can unfreeze the shaft (since without it, I can't raise the jack). Figured if I can at least pick one up (or two) I can work on the other in my leasure. Plus, wouldn't have to worry if I did ruin it.

So, if you have one, or know someone who has a couple laying around, let me know. Thanks