There was a problem with light tongue weight on an earlier model year 34' trailers and the dealers had a kit they were installing in the A frame rails. This kit had several long pieces of steel which were slid into the rails and welded in place to increase the tongue weight.
I learned about this from my dealer when I complained about the tongue weight on my then new 96' model year 30' trailer. The factory published weight is GVW 8300, UVW 6855, hitch weight of 680. When we ordered our trailer we did not want the table on the road side in front of the couch as we had the dinette table. Also left out all the mirrors on the doors at the front and rear of the trailer. My trailer when empty but with full LPG 40# tanks weighted 6860 and had only 630 lbs of tongue weight. The problem is the tongue weight is light to start with and most of the storage area is in the rear of the trailer behind the wheels. I carry no heavy items under the bed or in the back and have moved items such as my tool box and extra power cord extensions under the sofa in the front. Still to get my tongue weight to 12% of the total trailer weight I carry an extra 150# of lead shot in vinyl bags weighting 25# each which are stored around the battery boxes and the univolt under the sofa.
A/S owners manual states tongue weight should be between 10 and 15% and the ideal weight is 12%. I know from years of thriler towing if the tongue weight is below 10% you will have a handling problem. I learned this in 1968
when I got my first car tariler and started racing. The position of the car on the trailer controls the tongue weight.
The reason for trailer hitches like the Hensley Arrow and the Pull Rite is the design extends the tongue to greate a higher artificial tongue weight. Both are good hitches and will over come the light tongue weight issue.