The Equalizer hitch uses washers to set the hitch angle. Pretty sure mine has the most that will fit. Hitch is miles away (stowed in the camper) so I can't check. I think I have some photos but not sure they'll show here. I'll try later.
If your truck has the air suspension turn it off to set the hitch. You can turn it back on later. The automatic leveling will hide poor weight distribution.
The front rear suspensions should compress equally. Dealer will only spend enough time to get you off the lot. Plan on half a morning to get it set up right.

Do it yourself on a level street or parking lot. If the front suspension doesn't compress you're not transferring weight, simple a that. Easy to measure at the wheel wells.
You also want the trailer to tow level so every hitch change may call for another change -- plan on most of the morning.
An electric tongue jack will ease the setup and when it's time to hook up.
My personal opinion is the trailer is too heavy for the truck but that's another "weight police" topic.
-- Chuck