I had issues with my 2003 Dodge Ram 1500 and my 2004 Coachmen SOA. I could not get the trailer level, it was nose-high.
I was about 6" off and had to by a different shank to accommodate my level trailer. I bought a 6" drop shank for another $115 from a local RV store, on top of the price of my e2 hitch.
The truck is stock, with only Monroe coil-over rear shocks on it, and factory sized tires and rims.
Here's a before photo as to how off I was. When I called around no one believed me that I was that far off.
2500+ miles camping 2015:Black Hills, Sioux Falls, Lake Superior North Shore, MN State Parks
2003 Dodge Ram 1500 HEMI 5.7 / 3.92 - 2004 Coachmen Spirit of America 248TBG