I had some issues untill I got it sorted. The Liberty has a fairly short wheelbase and with only a single axle on the pod I found the pod wanted to throw the Jeep around.  So this is what I did.

1. make sure that you have good positive tounge weight. I carry a 100 lbs gen set on the tounge of my Pod.

2. I have an E2 Weight Distribution hitch with build in sway control.  This not only stopped most of the sway but also the bounce that you get in the rear end when you hit a bump. 

3. I only travel with about 10 Gal of water in the fresh tank and try to travel with the grey and black empty. 

4. Try and get your Pod Level or even better tounge slightly down on the front. Tounge up on the front is not the best Idea. Mine is slightly high but I can live with it because because it would have cost me $80 more to get a new shank for my hitch to lower it another inch.

5. Last but probobly the most important. The max speed on this rig is 70mph. I can cruise at 55-60mph but every mile per hour over 60 results in an increasingly more unstable rig. I took a white knuckle ride accross Toronto on the 401 a couple of years ago. This is a sixteen lane super highway where the slowest traffic goes 65 to 70 mph. I try to avoid that as much as possible anymore. Best  trip I have taken with my trailer I traveled from Montreal Canada to my home in Fredericton Canada and I went through the backwoods of Maine. Only about 2 hours of the 8 hour trip was on interstate. Funny thing is this trip takes 7 hours on a four lane but only took me 8 on back roads because it was a much more direct route. 

Hope that helps some.  

Not sure if the difference is my older model Jeep or the riser kit.

I get tha you need a longer bar but why do you need a rise. The liberty Hitch should he higher than the tongue of the Trailer when the trailer is level. 

Thanks...Tom