Rear End Settling With Weight Distribution Hitch

[delucajr]

What is the acceptable range for rear end settling when using a weight distribution hitch?

 

I'm using a Reese type round bar hitch on my 2011 Silverado 1500 FWD ext cab with HD towing package and Z71 suspension. After leveling my 4,000 lb travel trailer and adjusting the ball height to approximately 0.75" higher than the top of the coupler, I hooked up the trailer and set the spring bars parallel with the trailer tongue on the 7th chain link.

 

The trailer remained level according to the bubble indicator and when measured at the front and back of the trailer frame. The truck reference points (top center of fenders) measured as follows:

 

Front = 36.875" (0.125" lower, was 37.0" unloaded)

 

Rear = 37.75" (1.25" lower, was 39.0" unloaded)

 

This is my first trailer and I'm working my way through the learning process, feedback from those experienced with towing and hitch set-up will be appreciated.

 

JD

[Diesail]

sure sound perfect to me