Thanks for the replies so far. I don't remember which model; tandem axle and it looks to be about 19ft. or so.
Hitch weight is 475 lbs. (actual, (I weighed it with tongue scale) and that figure is with battery & LP and some gear but no water. That last item worries me a bit as I think his water tank is forward of the axles.
The Liberty hitch receiver is rated at 500 lbs. His initial tow yesterday was o.k. but that trailer is only going to gain weight.
Is that rating hitch weight rating with or without WDH? My Grand Cherokee is rated for 700 lbs. hitch wieght, but only with a WDH. It's only rated for about 400 lbs. without the WDH. I wouldn't even consider towing a 19' travel trailer without WDH on my Cherokee which is substantially beefier that the Liberty.