I put Timbrens on the rear of my 2500 hd and on a trip to Florida on a very ruff I95 I lost the ladder out the back while pulling our fiver to Florida. I never had this trouble before. I also lost on the trip back on the road about the same place lost a camping mat in the back both were weighted down with wood blocks but the bad road shook them off. I never had any trouble like this until I installed the Timbrens. The back of the truck was settling four inches with the fiver and at night I was getting a lot of people flashing for me to dim the lights. The ride does seem a little better but it looks like things in truck are being jared around more. I also had some things in the trailer to move around and that never happen before.
Tom:help:

Well the timbrens take place of the factory bumpstops, which will reduce the suspension clearance. So it will ride stiffer and the rear end wont have as much room to "travel" when you hit bumps and such.

The only way to solve the problem is to get rid of the timbrens, im supprised no one told you it'd ride stiffer with timbrens... Or since your towing a big 5'er I would have gotten airbags instead of timbrens.

Also just use racheting tiedowns on the ladders and it'll be fine.

And about people flashing you about your lights, its nature of having a 3/4ton or bigger truck. Mine is at stock height and people flash their lights at me all the time, I just flash them back. lol.

P.S. The best is when you get behind someone and your lights are right in their mirrors. I used to hate it when people did it to me, so I guess if ya cant beat em, JOIN EM!

I'd sell the Timbrens on Ebay and get a good set of airbags, that's the proper way to level.

Maybe a better set of shocks???

Rick is right. Get ride of your stock shocks for a set of bilsteins. You get alot of chatter with stock shocks under a load. The bilsteins will fix that. Another thing you should look into is a trail air suspension hitch for you fiver. I bought an 06 40' all american sport fiver that weighs 16500, and I use the timbrens they work great. My Fiver came with the trail air system which basically puts an airbag between the hitch on the bed and the hitch on the fiver.