I just took my airbags off of my truck

I use to think the same thing as Groover, it wasn't until I put my truck and trailer on a scale that I realized what was happening. When you sit the tongue weight on the hitch it also transfers weight from the front of the vehicle to the back along with the tongue weight. Depending on the rig that might be 300-500lbs, the WD shifts that weight back on the front where it belongs. In the perfect world the front axle weight goes back to where it was but hitch weight mostly still remains on the back. This being a dual lever setup, the distance from ball to truck axle and ball to trailer axles differ so YMMV. I'll have to try and find my print outs from the scale when I did it, that was about 8 years ago. Sorry Goover, I apologize for highjacking your airbag thread.