Once you get your hitch, you should spend some time getting it set up correctly for your situation. Most dealers do not have the time, and often the technicians are not knowledgeable enough, to do the job right.
Take a look at
this sticky thread that is at the top of this forum. It will tell you how to set up your hitch properly plus give you a lot more information that you will probably fine useful. If you follow the procedures given there you should have your hitch set adjusted well and have a pleasurable towing experience if the rest of your rig is set up as it should be.
Although a lot of that information is somewhat old and refers to specific hitches, it still can be used to set up just about any hitch because the basics are the same no matter what the brand name of the hitch is.
Barney