Hitch Heigth

For your r-pod the way to measure is from level ground to the top inside of the trailer coupler while the r-pod is sitting level.  Then for your Truck measure from level ground to the inside top of the receiver box. The difference between the two is how much drop or rise you need for towing.  On my Trailblazer Before i installed the risers on the r-pod I used a drop but once I installed the risers I had to flip my receiver to raise the ball.  It will differ depending on the vehicle and what options they have.

i will try to measure tonight when I get home.  Be careful as any measurements may be off depending on risers installed or not.  Not sure if yours have them or not.

The way I did it was to fully load the trailer and truck and hitch them together; then measure the trailer frame front and back. In my case, the front was about two inches lower than the back when I was using a 2 inch drop hitch. I bought a straight hitch (one with a 2" ball on the top and another size ball in the bottom). Our trailer now is level when we park on a level spot. I do not think a 2 inch drop in front presented any towing problems, but many times we stop over night on a long trip and I prefer not to unhitch, now I don't have to deal with a trailer that is lower in front when we stop. I'm told to never have the front of the trailer higher than the back.

For towing nose slightly down will help prevent sway.  One of our overnight stops at Wal-Mart I did as Footslogger suggested and just used the jack to push it up some to get it level (and act as a stabilizer jack).  I left a big note on the driver's seat so I wouldn't forget to put it up in the morning!

Footslogger, I'm not sure being out of level will affect propane operation, its a pressurized gas once it leaves the tank.  However, being level is necessary for the fridge to prevent crystals from forming in the tubes.