Trouble getting my Pro Pride adjusted

Hi, I recently installed a Pro Pride hitch to replace the old, weak and undersized Quality S dealer installed WDH. The Pro Pride feels a ton better, but I'm having trouble getting any weight distribution. I took measurements of the trailer and truck, both before and after hitching up. The PP spring bars are 1400lbs, and even set at 7-1/2" of adjustment, my truck is still sagging 2" at the rear wheels, and its 1/2" higher at the front. Its the 2" of sagg that has me concerned because my TT is nose down. I installed my PP hitch and thoroughly read the instructions before doing it. I'm sure I've got it pretty close and only need a minor adjustment, just wanted to get some input before I call Sean at Pro Pride for some advice. Hopefully some PP experts will chime in, as these hitches are unique and don't follow the same setup/adjustment steps as regular WDH hitches. Thanks for any input.