I totally agree with Rubberfrog here. I'm a tech at an RV dealership and the weight distribution hitch is all you need. You can use air bags to further level out your truck if the sag bothers you but they are not what you NEED. I've pulled up to an 8500lb park model Rv with my 4.7 Ram and the truck sat level and pulled great with weight distribution. Are you familiar with setting up the hitch? I've had to re explain them many times to customers who werent taught properly from where they purchased their unit. Just a little tip when you get the trailer coupled to the ball make sure you crank it back up taking the weight of the truck completely. Then hook up your torsion bars with a descent amount of tightness on the chains then let the trailer down on the truck. Makes it easier than fightin with the added pressure. Also you should have torsion bars rated for at least 1000lbs and as mentioned before, it's best to have your tires set to max inflation or closer to it than 35 in the rear when towing.

 

thanks for everyone's help. the trailer is a camper trailer, i don't think moving the axles around will be feasible for this trailer.

basically it sounds like the bounce is comming from the truck. 1. I need to raise my pressure to the max that's on the tire, which makes sense so the sidewalls won't flex in and out as much over bumps possibly causing a bouncing affect, and 2. the weight distribution hitch isn't properly set up causing too much weight on the rear leaf springs by causing them to be over stressed and possibly cause an upward and downward oscillation. (set up by the rv dealer haha! but i didn't buy the hitch from them so i think the just wanted me out of there)

How does that above statement sound? h

I think I will also look an new shocks, the truck is an 2003 with original shocks, however it only has 40,000 miles.

Any advice on setting up the hitch? I want the front to come down about as much as the rear but for sure not more. I've seen them change out the washers, and move the hangers on the trailer so I believe I can figure that out, but I've heard a couple of different theories on the front shouldn't drop or lift to where all 4 wheel wells measurements should change the same amount and everything in between.

 

the hitch has bars that rest on the hanger, no chains. I'm not sure what this type is called.

 

You may have an Equal-i-zer hitch:
http://www.equalizerhitch.com/

Check them out for adjustment instructions. If not, see if there is a manufacturer name on the WDH and look for instructions.

Hitch height (from ground) is also important. If that's not setup right, the other adjustments may be off trying to compensate for it.

The idea is to shift some weight from the tongue/ball to the front axle, but the secret is getting it setup for just the right amount.

You might also want to look at:
http://www.sherline.com/lm.htm

It's a bit spendy, but if you really want to know what's going on rather than guessing...

 

my setup looks just like that equalizer hitch. looking at the picture, the rear looks like it has too much weight on it compared to the front.

 

I'm not a trailer or rv expert, just my 2 cents. I make sure my wifes truck tires are at max inflation during the summer when she pulls here horse trailer. About 80 psi (10ply tire). I back them off to 65-70 in the winter. My dad would put 80 psi in both duals when they pulled there gooseneck. I always run max psi in my truck and never had an issue pulling my flatbed with my Farmall on it. Makes the ride a bit rougher

 

let's c if i can figure this attachment thing out

 

trial number 3

 

Also, FWIW, when I towed a ~5,500lb trailer with my 1500 with a WDH setup by the RV dealer, the truck "dolphined" down the freeway. Ripping everything apart and adjusting it per the manufacturer directions made a HUGE improvement.

If you have the opportunity, getting your truck and trailer weighed solo, and then with each axle on a scale will make sure that a) you aren't overloaded and b) that the WDH is setup properly.

 

It's hard to tell from the picture, but looks like your tongue may be up too high. The trailer frame should be level front-to-back, or just a little low in the front.