Lynnmor wrote:
Boomerweps wrote:
For MY hitch, the top of the hitch ball is supposed to be one inch above the inside top of the coupler when the trailer is level and no load on/in the truck.
That is a starting point, your truck might sag considerably or hardly at all. The OP needs to set up his hitch to return the front to the correct level, then if the rear is way too low, only more spring will help. Air bags are one kind of spring.
My statement was a reply to setting them the same height before connecting & adjusting the WDH.