I use the equalizer too. It's a great hitch. Best part is that it's easy to use and easy to change while on the road if you need to change it.
x2 what he said. Currently my equalizer is subtracting weight from the front to where I'm about 60lbs below the GAWR for the rear. I need to add another washer or two to make it the same and spread that weight to the front a bit.The head angle determines how much weight is distributed. As the head is tilted down, the bars transfer more weight to the front truck axles and trailer axles. You should adjust the head angle until the front axles have the same amount of weight before and after hooking up. This can be done by weighing the rig or by measuring the wheel well height. If you use measurements, make sure you measure from the wheel rim. Measuring from the ground or tire might result in improper adjustment.