All trucks are different and need to be set up right... The measuring of well wells works well..
My head is tilted with 7 washers. I use the 9th link up.. That takes 80 lbs off my rear.. But again my tounge is light,
See bars are parallel with trailer frame. when I first set up the bars were pointing way up just to get tension.. This is why you tilt the head. You can get another link or two..
Keep ajusting it if you need to to get the front wheel well measurement as clost to the mesurment taken with the truck alone on level ground..
See how from afar my truck is level.. ( The trailer was a bit high. I gave since lowered the shank one knotch...
Minimal sag .. actually front restored exact and rear drop is 1/2 inch.