We too are within the range but not listed, that said, on our big trip last year we did have a need to used the supplied jack and guess what, the tab welded onto the screw section that the crank goes into tore off whilst trying to raise the van, upon our return we got onto the local Jayco people and it was replaced no prob's but I have to question whether the jack is really suitable for the job it's intended for as it is very difficult to use, it just seems to require an inordinately large effort when you would think it would be easier than what it is.
Dave