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.
I've shopped around, talked to a lot of folks currently towing and came to the decision to buy the Equal-i-zer. I have the 12k version and tow a 23 foot TT (27 foot total) and have had zero problems with it, once it was dialed in. Great thing about the this hitch is you can tow, back-up, and turn without touching the hitch. No backing off the sway control to park.