... at Colaws Rv and RV Salvage, just outside Carthage, Mo. They will ship. http://www.colawrvsalvage.com/
I was over there today poking around and happened to notice these and thought someone might be needing one in this weather.
I also ran across a couple of those oft-lost emergency manual cranks for the electric Superjack that so many of us have. I have no idea if any of Colaw's employees would recognize which one was which, but they might. They were priced at $15 each.